1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 23d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 3355da1ebSSage Weil 4355da1ebSSage Weil #include <linux/module.h> 5355da1ebSSage Weil #include <linux/fs.h> 6355da1ebSSage Weil #include <linux/slab.h> 7355da1ebSSage Weil #include <linux/string.h> 8355da1ebSSage Weil #include <linux/uaccess.h> 9355da1ebSSage Weil #include <linux/kernel.h> 10355da1ebSSage Weil #include <linux/writeback.h> 11355da1ebSSage Weil #include <linux/vmalloc.h> 122cdeb1e4SAndreas Gruenbacher #include <linux/xattr.h> 134db658eaSLinus Torvalds #include <linux/posix_acl.h> 143e7fbe9cSYan, Zheng #include <linux/random.h> 15a407846eSYan, Zheng #include <linux/sort.h> 16a35ead31SJeff Layton #include <linux/iversion.h> 17355da1ebSSage Weil 18355da1ebSSage Weil #include "super.h" 193d14c5d2SYehuda Sadeh #include "mds_client.h" 2099ccbd22SMilosz Tanski #include "cache.h" 213d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 22355da1ebSSage Weil 23355da1ebSSage Weil /* 24355da1ebSSage Weil * Ceph inode operations 25355da1ebSSage Weil * 26355da1ebSSage Weil * Implement basic inode helpers (get, alloc) and inode ops (getattr, 27355da1ebSSage Weil * setattr, etc.), xattr helpers, and helpers for assimilating 28355da1ebSSage Weil * metadata returned by the MDS into our cache. 29355da1ebSSage Weil * 30355da1ebSSage Weil * Also define helpers for doing asynchronous writeback, invalidation, 31355da1ebSSage Weil * and truncation for the benefit of those who can't afford to block 32355da1ebSSage Weil * (typically because they are in the message handler path). 33355da1ebSSage Weil */ 34355da1ebSSage Weil 35355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops; 36355da1ebSSage Weil 371cf89a8dSYan, Zheng static void ceph_inode_work(struct work_struct *work); 38355da1ebSSage Weil 39355da1ebSSage Weil /* 40355da1ebSSage Weil * find or create an inode, given the ceph ino number 41355da1ebSSage Weil */ 42ad1fee96SYehuda Sadeh static int ceph_set_ino_cb(struct inode *inode, void *data) 43ad1fee96SYehuda Sadeh { 44ebce3eb2SJeff Layton struct ceph_inode_info *ci = ceph_inode(inode); 451dd8d470SXiubo Li struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); 46ebce3eb2SJeff Layton 47ebce3eb2SJeff Layton ci->i_vino = *(struct ceph_vino *)data; 48ebce3eb2SJeff Layton inode->i_ino = ceph_vino_to_ino_t(ci->i_vino); 49a35ead31SJeff Layton inode_set_iversion_raw(inode, 0); 501dd8d470SXiubo Li percpu_counter_inc(&mdsc->metric.total_inodes); 511dd8d470SXiubo Li 52ad1fee96SYehuda Sadeh return 0; 53ad1fee96SYehuda Sadeh } 54ad1fee96SYehuda Sadeh 55355da1ebSSage Weil struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) 56355da1ebSSage Weil { 57355da1ebSSage Weil struct inode *inode; 58355da1ebSSage Weil 59d4f6b31dSJeff Layton if (ceph_vino_is_reserved(vino)) 60d4f6b31dSJeff Layton return ERR_PTR(-EREMOTEIO); 61d4f6b31dSJeff Layton 62ebce3eb2SJeff Layton inode = iget5_locked(sb, (unsigned long)vino.ino, ceph_ino_compare, 63ebce3eb2SJeff Layton ceph_set_ino_cb, &vino); 64d37b1d99SMarkus Elfring if (!inode) 65355da1ebSSage Weil return ERR_PTR(-ENOMEM); 66355da1ebSSage Weil 67ebce3eb2SJeff Layton dout("get_inode on %llu=%llx.%llx got %p new %d\n", ceph_present_inode(inode), 68ebce3eb2SJeff Layton ceph_vinop(inode), inode, !!(inode->i_state & I_NEW)); 69355da1ebSSage Weil return inode; 70355da1ebSSage Weil } 71355da1ebSSage Weil 72355da1ebSSage Weil /* 73355da1ebSSage Weil * get/constuct snapdir inode for a given directory 74355da1ebSSage Weil */ 75355da1ebSSage Weil struct inode *ceph_get_snapdir(struct inode *parent) 76355da1ebSSage Weil { 77355da1ebSSage Weil struct ceph_vino vino = { 78355da1ebSSage Weil .ino = ceph_ino(parent), 79355da1ebSSage Weil .snap = CEPH_SNAPDIR, 80355da1ebSSage Weil }; 81355da1ebSSage Weil struct inode *inode = ceph_get_inode(parent->i_sb, vino); 82b377ff13SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 83355da1ebSSage Weil 84355da1ebSSage Weil if (IS_ERR(inode)) 857e34bc52SJulia Lawall return inode; 863e10a15fSJeff Layton 873e10a15fSJeff Layton if (!S_ISDIR(parent->i_mode)) { 883e10a15fSJeff Layton pr_warn_once("bad snapdir parent type (mode=0%o)\n", 893e10a15fSJeff Layton parent->i_mode); 903e10a15fSJeff Layton return ERR_PTR(-ENOTDIR); 913e10a15fSJeff Layton } 923e10a15fSJeff Layton 933e10a15fSJeff Layton if (!(inode->i_state & I_NEW) && !S_ISDIR(inode->i_mode)) { 943e10a15fSJeff Layton pr_warn_once("bad snapdir inode type (mode=0%o)\n", 953e10a15fSJeff Layton inode->i_mode); 963e10a15fSJeff Layton return ERR_PTR(-ENOTDIR); 973e10a15fSJeff Layton } 983e10a15fSJeff Layton 99355da1ebSSage Weil inode->i_mode = parent->i_mode; 100355da1ebSSage Weil inode->i_uid = parent->i_uid; 101355da1ebSSage Weil inode->i_gid = parent->i_gid; 102ef915725SLuis Henriques inode->i_mtime = parent->i_mtime; 103ef915725SLuis Henriques inode->i_ctime = parent->i_ctime; 104ef915725SLuis Henriques inode->i_atime = parent->i_atime; 105b377ff13SSage Weil ci->i_rbytes = 0; 106ef915725SLuis Henriques ci->i_btime = ceph_inode(parent)->i_btime; 107893e456bSJeff Layton 108d3c51ae1SJeff Layton if (inode->i_state & I_NEW) { 109d3c51ae1SJeff Layton inode->i_op = &ceph_snapdir_iops; 110d3c51ae1SJeff Layton inode->i_fop = &ceph_snapdir_fops; 111d3c51ae1SJeff Layton ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ 112893e456bSJeff Layton unlock_new_inode(inode); 113d3c51ae1SJeff Layton } 114893e456bSJeff Layton 115355da1ebSSage Weil return inode; 116355da1ebSSage Weil } 117355da1ebSSage Weil 118355da1ebSSage Weil const struct inode_operations ceph_file_iops = { 119355da1ebSSage Weil .permission = ceph_permission, 120355da1ebSSage Weil .setattr = ceph_setattr, 121355da1ebSSage Weil .getattr = ceph_getattr, 122355da1ebSSage Weil .listxattr = ceph_listxattr, 1237221fe4cSGuangliang Zhao .get_acl = ceph_get_acl, 12472466d0bSSage Weil .set_acl = ceph_set_acl, 125355da1ebSSage Weil }; 126355da1ebSSage Weil 127355da1ebSSage Weil 128355da1ebSSage Weil /* 129355da1ebSSage Weil * We use a 'frag tree' to keep track of the MDS's directory fragments 130355da1ebSSage Weil * for a given inode (usually there is just a single fragment). We 131355da1ebSSage Weil * need to know when a child frag is delegated to a new MDS, or when 132355da1ebSSage Weil * it is flagged as replicated, so we can direct our requests 133355da1ebSSage Weil * accordingly. 134355da1ebSSage Weil */ 135355da1ebSSage Weil 136355da1ebSSage Weil /* 137355da1ebSSage Weil * find/create a frag in the tree 138355da1ebSSage Weil */ 139355da1ebSSage Weil static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, 140355da1ebSSage Weil u32 f) 141355da1ebSSage Weil { 142355da1ebSSage Weil struct rb_node **p; 143355da1ebSSage Weil struct rb_node *parent = NULL; 144355da1ebSSage Weil struct ceph_inode_frag *frag; 145355da1ebSSage Weil int c; 146355da1ebSSage Weil 147355da1ebSSage Weil p = &ci->i_fragtree.rb_node; 148355da1ebSSage Weil while (*p) { 149355da1ebSSage Weil parent = *p; 150355da1ebSSage Weil frag = rb_entry(parent, struct ceph_inode_frag, node); 151355da1ebSSage Weil c = ceph_frag_compare(f, frag->frag); 152355da1ebSSage Weil if (c < 0) 153355da1ebSSage Weil p = &(*p)->rb_left; 154355da1ebSSage Weil else if (c > 0) 155355da1ebSSage Weil p = &(*p)->rb_right; 156355da1ebSSage Weil else 157355da1ebSSage Weil return frag; 158355da1ebSSage Weil } 159355da1ebSSage Weil 160355da1ebSSage Weil frag = kmalloc(sizeof(*frag), GFP_NOFS); 16151308806SMarkus Elfring if (!frag) 162355da1ebSSage Weil return ERR_PTR(-ENOMEM); 16351308806SMarkus Elfring 164355da1ebSSage Weil frag->frag = f; 165355da1ebSSage Weil frag->split_by = 0; 166355da1ebSSage Weil frag->mds = -1; 167355da1ebSSage Weil frag->ndist = 0; 168355da1ebSSage Weil 169355da1ebSSage Weil rb_link_node(&frag->node, parent, p); 170355da1ebSSage Weil rb_insert_color(&frag->node, &ci->i_fragtree); 171355da1ebSSage Weil 172355da1ebSSage Weil dout("get_or_create_frag added %llx.%llx frag %x\n", 173355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 174355da1ebSSage Weil return frag; 175355da1ebSSage Weil } 176355da1ebSSage Weil 177355da1ebSSage Weil /* 178355da1ebSSage Weil * find a specific frag @f 179355da1ebSSage Weil */ 180355da1ebSSage Weil struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) 181355da1ebSSage Weil { 182355da1ebSSage Weil struct rb_node *n = ci->i_fragtree.rb_node; 183355da1ebSSage Weil 184355da1ebSSage Weil while (n) { 185355da1ebSSage Weil struct ceph_inode_frag *frag = 186355da1ebSSage Weil rb_entry(n, struct ceph_inode_frag, node); 187355da1ebSSage Weil int c = ceph_frag_compare(f, frag->frag); 188355da1ebSSage Weil if (c < 0) 189355da1ebSSage Weil n = n->rb_left; 190355da1ebSSage Weil else if (c > 0) 191355da1ebSSage Weil n = n->rb_right; 192355da1ebSSage Weil else 193355da1ebSSage Weil return frag; 194355da1ebSSage Weil } 195355da1ebSSage Weil return NULL; 196355da1ebSSage Weil } 197355da1ebSSage Weil 198355da1ebSSage Weil /* 199355da1ebSSage Weil * Choose frag containing the given value @v. If @pfrag is 200355da1ebSSage Weil * specified, copy the frag delegation info to the caller if 201355da1ebSSage Weil * it is present. 202355da1ebSSage Weil */ 2033e7fbe9cSYan, Zheng static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2043e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 205355da1ebSSage Weil { 206355da1ebSSage Weil u32 t = ceph_frag_make(0, 0); 207355da1ebSSage Weil struct ceph_inode_frag *frag; 208355da1ebSSage Weil unsigned nway, i; 209355da1ebSSage Weil u32 n; 210355da1ebSSage Weil 211355da1ebSSage Weil if (found) 212355da1ebSSage Weil *found = 0; 213355da1ebSSage Weil 214355da1ebSSage Weil while (1) { 215355da1ebSSage Weil WARN_ON(!ceph_frag_contains_value(t, v)); 216355da1ebSSage Weil frag = __ceph_find_frag(ci, t); 217355da1ebSSage Weil if (!frag) 218355da1ebSSage Weil break; /* t is a leaf */ 219355da1ebSSage Weil if (frag->split_by == 0) { 220355da1ebSSage Weil if (pfrag) 221355da1ebSSage Weil memcpy(pfrag, frag, sizeof(*pfrag)); 222355da1ebSSage Weil if (found) 223355da1ebSSage Weil *found = 1; 224355da1ebSSage Weil break; 225355da1ebSSage Weil } 226355da1ebSSage Weil 227355da1ebSSage Weil /* choose child */ 228355da1ebSSage Weil nway = 1 << frag->split_by; 229355da1ebSSage Weil dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, 230355da1ebSSage Weil frag->split_by, nway); 231355da1ebSSage Weil for (i = 0; i < nway; i++) { 232355da1ebSSage Weil n = ceph_frag_make_child(t, frag->split_by, i); 233355da1ebSSage Weil if (ceph_frag_contains_value(n, v)) { 234355da1ebSSage Weil t = n; 235355da1ebSSage Weil break; 236355da1ebSSage Weil } 237355da1ebSSage Weil } 238355da1ebSSage Weil BUG_ON(i == nway); 239355da1ebSSage Weil } 240355da1ebSSage Weil dout("choose_frag(%x) = %x\n", v, t); 241355da1ebSSage Weil 242355da1ebSSage Weil return t; 243355da1ebSSage Weil } 244355da1ebSSage Weil 2453e7fbe9cSYan, Zheng u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2463e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 2473e7fbe9cSYan, Zheng { 2483e7fbe9cSYan, Zheng u32 ret; 2493e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 2503e7fbe9cSYan, Zheng ret = __ceph_choose_frag(ci, v, pfrag, found); 2513e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 2523e7fbe9cSYan, Zheng return ret; 2533e7fbe9cSYan, Zheng } 2543e7fbe9cSYan, Zheng 255355da1ebSSage Weil /* 256355da1ebSSage Weil * Process dirfrag (delegation) info from the mds. Include leaf 257355da1ebSSage Weil * fragment in tree ONLY if ndist > 0. Otherwise, only 258355da1ebSSage Weil * branches/splits are included in i_fragtree) 259355da1ebSSage Weil */ 260355da1ebSSage Weil static int ceph_fill_dirfrag(struct inode *inode, 261355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo) 262355da1ebSSage Weil { 263355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 264355da1ebSSage Weil struct ceph_inode_frag *frag; 265355da1ebSSage Weil u32 id = le32_to_cpu(dirinfo->frag); 266355da1ebSSage Weil int mds = le32_to_cpu(dirinfo->auth); 267355da1ebSSage Weil int ndist = le32_to_cpu(dirinfo->ndist); 2688d08503cSYan, Zheng int diri_auth = -1; 269355da1ebSSage Weil int i; 270355da1ebSSage Weil int err = 0; 271355da1ebSSage Weil 2728d08503cSYan, Zheng spin_lock(&ci->i_ceph_lock); 2738d08503cSYan, Zheng if (ci->i_auth_cap) 2748d08503cSYan, Zheng diri_auth = ci->i_auth_cap->mds; 2758d08503cSYan, Zheng spin_unlock(&ci->i_ceph_lock); 2768d08503cSYan, Zheng 27742172119SYan, Zheng if (mds == -1) /* CDIR_AUTH_PARENT */ 27842172119SYan, Zheng mds = diri_auth; 27942172119SYan, Zheng 280355da1ebSSage Weil mutex_lock(&ci->i_fragtree_mutex); 2818d08503cSYan, Zheng if (ndist == 0 && mds == diri_auth) { 282355da1ebSSage Weil /* no delegation info needed. */ 283355da1ebSSage Weil frag = __ceph_find_frag(ci, id); 284355da1ebSSage Weil if (!frag) 285355da1ebSSage Weil goto out; 286355da1ebSSage Weil if (frag->split_by == 0) { 287355da1ebSSage Weil /* tree leaf, remove */ 288355da1ebSSage Weil dout("fill_dirfrag removed %llx.%llx frag %x" 289355da1ebSSage Weil " (no ref)\n", ceph_vinop(inode), id); 290355da1ebSSage Weil rb_erase(&frag->node, &ci->i_fragtree); 291355da1ebSSage Weil kfree(frag); 292355da1ebSSage Weil } else { 293355da1ebSSage Weil /* tree branch, keep and clear */ 294355da1ebSSage Weil dout("fill_dirfrag cleared %llx.%llx frag %x" 295355da1ebSSage Weil " referral\n", ceph_vinop(inode), id); 296355da1ebSSage Weil frag->mds = -1; 297355da1ebSSage Weil frag->ndist = 0; 298355da1ebSSage Weil } 299355da1ebSSage Weil goto out; 300355da1ebSSage Weil } 301355da1ebSSage Weil 302355da1ebSSage Weil 303355da1ebSSage Weil /* find/add this frag to store mds delegation info */ 304355da1ebSSage Weil frag = __get_or_create_frag(ci, id); 305355da1ebSSage Weil if (IS_ERR(frag)) { 306355da1ebSSage Weil /* this is not the end of the world; we can continue 307355da1ebSSage Weil with bad/inaccurate delegation info */ 308355da1ebSSage Weil pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", 309355da1ebSSage Weil ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); 310355da1ebSSage Weil err = -ENOMEM; 311355da1ebSSage Weil goto out; 312355da1ebSSage Weil } 313355da1ebSSage Weil 314355da1ebSSage Weil frag->mds = mds; 315355da1ebSSage Weil frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); 316355da1ebSSage Weil for (i = 0; i < frag->ndist; i++) 317355da1ebSSage Weil frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); 318355da1ebSSage Weil dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", 319355da1ebSSage Weil ceph_vinop(inode), frag->frag, frag->ndist); 320355da1ebSSage Weil 321355da1ebSSage Weil out: 322355da1ebSSage Weil mutex_unlock(&ci->i_fragtree_mutex); 323355da1ebSSage Weil return err; 324355da1ebSSage Weil } 325355da1ebSSage Weil 326a407846eSYan, Zheng static int frag_tree_split_cmp(const void *l, const void *r) 327a407846eSYan, Zheng { 328a407846eSYan, Zheng struct ceph_frag_tree_split *ls = (struct ceph_frag_tree_split*)l; 329a407846eSYan, Zheng struct ceph_frag_tree_split *rs = (struct ceph_frag_tree_split*)r; 330fe2ed425SJeff Layton return ceph_frag_compare(le32_to_cpu(ls->frag), 331fe2ed425SJeff Layton le32_to_cpu(rs->frag)); 332a407846eSYan, Zheng } 333a407846eSYan, Zheng 334a4b7431fSYan, Zheng static bool is_frag_child(u32 f, struct ceph_inode_frag *frag) 335a4b7431fSYan, Zheng { 336a4b7431fSYan, Zheng if (!frag) 337a4b7431fSYan, Zheng return f == ceph_frag_make(0, 0); 338a4b7431fSYan, Zheng if (ceph_frag_bits(f) != ceph_frag_bits(frag->frag) + frag->split_by) 339a4b7431fSYan, Zheng return false; 340a4b7431fSYan, Zheng return ceph_frag_contains_value(frag->frag, ceph_frag_value(f)); 341a4b7431fSYan, Zheng } 342a4b7431fSYan, Zheng 3433e7fbe9cSYan, Zheng static int ceph_fill_fragtree(struct inode *inode, 3443e7fbe9cSYan, Zheng struct ceph_frag_tree_head *fragtree, 3453e7fbe9cSYan, Zheng struct ceph_mds_reply_dirfrag *dirinfo) 3463e7fbe9cSYan, Zheng { 3473e7fbe9cSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 348a4b7431fSYan, Zheng struct ceph_inode_frag *frag, *prev_frag = NULL; 3493e7fbe9cSYan, Zheng struct rb_node *rb_node; 3501b1bc16dSYan, Zheng unsigned i, split_by, nsplits; 3511b1bc16dSYan, Zheng u32 id; 3523e7fbe9cSYan, Zheng bool update = false; 3533e7fbe9cSYan, Zheng 3543e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 3553e7fbe9cSYan, Zheng nsplits = le32_to_cpu(fragtree->nsplits); 3561b1bc16dSYan, Zheng if (nsplits != ci->i_fragtree_nsplits) { 3571b1bc16dSYan, Zheng update = true; 3581b1bc16dSYan, Zheng } else if (nsplits) { 3593e7fbe9cSYan, Zheng i = prandom_u32() % nsplits; 3603e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3613e7fbe9cSYan, Zheng if (!__ceph_find_frag(ci, id)) 3623e7fbe9cSYan, Zheng update = true; 3633e7fbe9cSYan, Zheng } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { 3643e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3653e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3663e7fbe9cSYan, Zheng if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) 3673e7fbe9cSYan, Zheng update = true; 3683e7fbe9cSYan, Zheng } 3693e7fbe9cSYan, Zheng if (!update && dirinfo) { 3703e7fbe9cSYan, Zheng id = le32_to_cpu(dirinfo->frag); 3713e7fbe9cSYan, Zheng if (id != __ceph_choose_frag(ci, id, NULL, NULL)) 3723e7fbe9cSYan, Zheng update = true; 3733e7fbe9cSYan, Zheng } 3743e7fbe9cSYan, Zheng if (!update) 3753e7fbe9cSYan, Zheng goto out_unlock; 3763e7fbe9cSYan, Zheng 377a407846eSYan, Zheng if (nsplits > 1) { 378a407846eSYan, Zheng sort(fragtree->splits, nsplits, sizeof(fragtree->splits[0]), 379a407846eSYan, Zheng frag_tree_split_cmp, NULL); 380a407846eSYan, Zheng } 381a407846eSYan, Zheng 3823e7fbe9cSYan, Zheng dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); 3833e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3843e7fbe9cSYan, Zheng for (i = 0; i < nsplits; i++) { 3853e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3861b1bc16dSYan, Zheng split_by = le32_to_cpu(fragtree->splits[i].by); 3871b1bc16dSYan, Zheng if (split_by == 0 || ceph_frag_bits(id) + split_by > 24) { 3881b1bc16dSYan, Zheng pr_err("fill_fragtree %llx.%llx invalid split %d/%u, " 3891b1bc16dSYan, Zheng "frag %x split by %d\n", ceph_vinop(inode), 3901b1bc16dSYan, Zheng i, nsplits, id, split_by); 3911b1bc16dSYan, Zheng continue; 3921b1bc16dSYan, Zheng } 3933e7fbe9cSYan, Zheng frag = NULL; 3943e7fbe9cSYan, Zheng while (rb_node) { 3953e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3963e7fbe9cSYan, Zheng if (ceph_frag_compare(frag->frag, id) >= 0) { 3973e7fbe9cSYan, Zheng if (frag->frag != id) 3983e7fbe9cSYan, Zheng frag = NULL; 3993e7fbe9cSYan, Zheng else 4003e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 4013e7fbe9cSYan, Zheng break; 4023e7fbe9cSYan, Zheng } 4033e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 404a4b7431fSYan, Zheng /* delete stale split/leaf node */ 405a4b7431fSYan, Zheng if (frag->split_by > 0 || 406a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 4073e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 4081b1bc16dSYan, Zheng if (frag->split_by > 0) 4091b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 4103e7fbe9cSYan, Zheng kfree(frag); 411a4b7431fSYan, Zheng } 4123e7fbe9cSYan, Zheng frag = NULL; 4133e7fbe9cSYan, Zheng } 4143e7fbe9cSYan, Zheng if (!frag) { 4153e7fbe9cSYan, Zheng frag = __get_or_create_frag(ci, id); 4163e7fbe9cSYan, Zheng if (IS_ERR(frag)) 4173e7fbe9cSYan, Zheng continue; 4183e7fbe9cSYan, Zheng } 4191b1bc16dSYan, Zheng if (frag->split_by == 0) 4201b1bc16dSYan, Zheng ci->i_fragtree_nsplits++; 4211b1bc16dSYan, Zheng frag->split_by = split_by; 4223e7fbe9cSYan, Zheng dout(" frag %x split by %d\n", frag->frag, frag->split_by); 423a4b7431fSYan, Zheng prev_frag = frag; 4243e7fbe9cSYan, Zheng } 4253e7fbe9cSYan, Zheng while (rb_node) { 4263e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 4273e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 428a4b7431fSYan, Zheng /* delete stale split/leaf node */ 429a4b7431fSYan, Zheng if (frag->split_by > 0 || 430a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 4313e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 4321b1bc16dSYan, Zheng if (frag->split_by > 0) 4331b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 4343e7fbe9cSYan, Zheng kfree(frag); 4353e7fbe9cSYan, Zheng } 436a4b7431fSYan, Zheng } 4373e7fbe9cSYan, Zheng out_unlock: 4383e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 4393e7fbe9cSYan, Zheng return 0; 4403e7fbe9cSYan, Zheng } 441355da1ebSSage Weil 442355da1ebSSage Weil /* 443355da1ebSSage Weil * initialize a newly allocated inode. 444355da1ebSSage Weil */ 445355da1ebSSage Weil struct inode *ceph_alloc_inode(struct super_block *sb) 446355da1ebSSage Weil { 447355da1ebSSage Weil struct ceph_inode_info *ci; 448355da1ebSSage Weil int i; 449355da1ebSSage Weil 450355da1ebSSage Weil ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); 451355da1ebSSage Weil if (!ci) 452355da1ebSSage Weil return NULL; 453355da1ebSSage Weil 454355da1ebSSage Weil dout("alloc_inode %p\n", &ci->vfs_inode); 455355da1ebSSage Weil 456be655596SSage Weil spin_lock_init(&ci->i_ceph_lock); 457be655596SSage Weil 458355da1ebSSage Weil ci->i_version = 0; 45931c542a1SYan, Zheng ci->i_inline_version = 0; 460355da1ebSSage Weil ci->i_time_warp_seq = 0; 461355da1ebSSage Weil ci->i_ceph_flags = 0; 462fdd4e158SYan, Zheng atomic64_set(&ci->i_ordered_count, 1); 463fdd4e158SYan, Zheng atomic64_set(&ci->i_release_count, 1); 464fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], 0); 465fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], 0); 466355da1ebSSage Weil ci->i_symlink = NULL; 467355da1ebSSage Weil 468fb18a575SLuis Henriques ci->i_max_bytes = 0; 469fb18a575SLuis Henriques ci->i_max_files = 0; 470fb18a575SLuis Henriques 4716c0f3af7SSage Weil memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); 472785892feSJeff Layton memset(&ci->i_cached_layout, 0, sizeof(ci->i_cached_layout)); 47330c156d9SYan, Zheng RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL); 4746c0f3af7SSage Weil 475355da1ebSSage Weil ci->i_fragtree = RB_ROOT; 476355da1ebSSage Weil mutex_init(&ci->i_fragtree_mutex); 477355da1ebSSage Weil 478355da1ebSSage Weil ci->i_xattrs.blob = NULL; 479355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 480355da1ebSSage Weil ci->i_xattrs.dirty = false; 481355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 482355da1ebSSage Weil ci->i_xattrs.count = 0; 483355da1ebSSage Weil ci->i_xattrs.names_size = 0; 484355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 485355da1ebSSage Weil ci->i_xattrs.version = 0; 486355da1ebSSage Weil ci->i_xattrs.index_version = 0; 487355da1ebSSage Weil 488355da1ebSSage Weil ci->i_caps = RB_ROOT; 489355da1ebSSage Weil ci->i_auth_cap = NULL; 490355da1ebSSage Weil ci->i_dirty_caps = 0; 491355da1ebSSage Weil ci->i_flushing_caps = 0; 492355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_dirty_item); 493355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_flushing_item); 494f66fd9f0SYan, Zheng ci->i_prealloc_cap_flush = NULL; 495e4500b5eSYan, Zheng INIT_LIST_HEAD(&ci->i_cap_flush_list); 496355da1ebSSage Weil init_waitqueue_head(&ci->i_cap_wq); 497355da1ebSSage Weil ci->i_hold_caps_max = 0; 498355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_delay_list); 499355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_snaps); 500355da1ebSSage Weil ci->i_head_snapc = NULL; 501355da1ebSSage Weil ci->i_snap_caps = 0; 502355da1ebSSage Weil 503719a2514SYan, Zheng ci->i_last_rd = ci->i_last_wr = jiffies - 3600 * HZ; 504774a6a11SYan, Zheng for (i = 0; i < CEPH_FILE_MODE_BITS; i++) 505355da1ebSSage Weil ci->i_nr_by_mode[i] = 0; 506355da1ebSSage Weil 507b0d7c223SYan, Zheng mutex_init(&ci->i_truncate_mutex); 508355da1ebSSage Weil ci->i_truncate_seq = 0; 509355da1ebSSage Weil ci->i_truncate_size = 0; 510355da1ebSSage Weil ci->i_truncate_pending = 0; 511355da1ebSSage Weil 512355da1ebSSage Weil ci->i_max_size = 0; 513355da1ebSSage Weil ci->i_reported_size = 0; 514355da1ebSSage Weil ci->i_wanted_max_size = 0; 515355da1ebSSage Weil ci->i_requested_max_size = 0; 516355da1ebSSage Weil 517355da1ebSSage Weil ci->i_pin_ref = 0; 518355da1ebSSage Weil ci->i_rd_ref = 0; 519355da1ebSSage Weil ci->i_rdcache_ref = 0; 520355da1ebSSage Weil ci->i_wr_ref = 0; 521d3d0720dSHenry C Chang ci->i_wb_ref = 0; 522f85122afSJeff Layton ci->i_fx_ref = 0; 523355da1ebSSage Weil ci->i_wrbuffer_ref = 0; 524355da1ebSSage Weil ci->i_wrbuffer_ref_head = 0; 52589aa5930SYan, Zheng atomic_set(&ci->i_filelock_ref, 0); 5261e9c2eb6SYan, Zheng atomic_set(&ci->i_shared_gen, 1); 527355da1ebSSage Weil ci->i_rdcache_gen = 0; 528355da1ebSSage Weil ci->i_rdcache_revoking = 0; 529355da1ebSSage Weil 530355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_dirops); 53168cd5b4bSYan, Zheng INIT_LIST_HEAD(&ci->i_unsafe_iops); 532355da1ebSSage Weil spin_lock_init(&ci->i_unsafe_lock); 533355da1ebSSage Weil 534355da1ebSSage Weil ci->i_snap_realm = NULL; 535355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_realm_item); 536355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_flush_item); 537355da1ebSSage Weil 5381cf89a8dSYan, Zheng INIT_WORK(&ci->i_work, ceph_inode_work); 5391cf89a8dSYan, Zheng ci->i_work_mask = 0; 540245ce991SJeff Layton memset(&ci->i_btime, '\0', sizeof(ci->i_btime)); 541355da1ebSSage Weil 54299ccbd22SMilosz Tanski ceph_fscache_inode_init(ci); 54399ccbd22SMilosz Tanski 544f4b97866SYan, Zheng ci->i_meta_err = 0; 545f4b97866SYan, Zheng 546355da1ebSSage Weil return &ci->vfs_inode; 547355da1ebSSage Weil } 548355da1ebSSage Weil 549cfa6d412SAl Viro void ceph_free_inode(struct inode *inode) 550fa0d7e3dSNick Piggin { 551fa0d7e3dSNick Piggin struct ceph_inode_info *ci = ceph_inode(inode); 552fa0d7e3dSNick Piggin 553daf5cc27SAl Viro kfree(ci->i_symlink); 554fa0d7e3dSNick Piggin kmem_cache_free(ceph_inode_cachep, ci); 555fa0d7e3dSNick Piggin } 556fa0d7e3dSNick Piggin 55787bc5b89SYan, Zheng void ceph_evict_inode(struct inode *inode) 558355da1ebSSage Weil { 559355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 5601dd8d470SXiubo Li struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); 561355da1ebSSage Weil struct ceph_inode_frag *frag; 562355da1ebSSage Weil struct rb_node *n; 563355da1ebSSage Weil 56487bc5b89SYan, Zheng dout("evict_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); 56587bc5b89SYan, Zheng 5661dd8d470SXiubo Li percpu_counter_dec(&mdsc->metric.total_inodes); 5671dd8d470SXiubo Li 56887bc5b89SYan, Zheng truncate_inode_pages_final(&inode->i_data); 56987bc5b89SYan, Zheng clear_inode(inode); 570355da1ebSSage Weil 57199ccbd22SMilosz Tanski ceph_fscache_unregister_inode_cookie(ci); 57299ccbd22SMilosz Tanski 573d6e47819SYan, Zheng __ceph_remove_caps(ci); 574355da1ebSSage Weil 575d557c48dSLuis Henriques if (__ceph_has_any_quota(ci)) 576d557c48dSLuis Henriques ceph_adjust_quota_realms_count(inode, false); 577d557c48dSLuis Henriques 5788b218b8aSSage Weil /* 5798b218b8aSSage Weil * we may still have a snap_realm reference if there are stray 580d9df2783SYan, Zheng * caps in i_snap_caps. 5818b218b8aSSage Weil */ 5828b218b8aSSage Weil if (ci->i_snap_realm) { 58375c9627eSYan, Zheng if (ceph_snap(inode) == CEPH_NOSNAP) { 5848b218b8aSSage Weil struct ceph_snap_realm *realm = ci->i_snap_realm; 58575c9627eSYan, Zheng dout(" dropping residual ref to snap realm %p\n", 58675c9627eSYan, Zheng realm); 5878b218b8aSSage Weil spin_lock(&realm->inodes_with_caps_lock); 5888b218b8aSSage Weil list_del_init(&ci->i_snap_realm_item); 589e3161f17SLuis Henriques ci->i_snap_realm = NULL; 590e3161f17SLuis Henriques if (realm->ino == ci->i_vino.ino) 591e3161f17SLuis Henriques realm->inode = NULL; 5928b218b8aSSage Weil spin_unlock(&realm->inodes_with_caps_lock); 5938b218b8aSSage Weil ceph_put_snap_realm(mdsc, realm); 59475c9627eSYan, Zheng } else { 59575c9627eSYan, Zheng ceph_put_snapid_map(mdsc, ci->i_snapid_map); 59675c9627eSYan, Zheng ci->i_snap_realm = NULL; 59775c9627eSYan, Zheng } 5988b218b8aSSage Weil } 5998b218b8aSSage Weil 600355da1ebSSage Weil while ((n = rb_first(&ci->i_fragtree)) != NULL) { 601355da1ebSSage Weil frag = rb_entry(n, struct ceph_inode_frag, node); 602355da1ebSSage Weil rb_erase(n, &ci->i_fragtree); 603355da1ebSSage Weil kfree(frag); 604355da1ebSSage Weil } 6051b1bc16dSYan, Zheng ci->i_fragtree_nsplits = 0; 606355da1ebSSage Weil 607355da1ebSSage Weil __ceph_destroy_xattrs(ci); 608b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 609355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 610b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 611355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 612355da1ebSSage Weil 613779fe0fbSYan, Zheng ceph_put_string(rcu_dereference_raw(ci->i_layout.pool_ns)); 614785892feSJeff Layton ceph_put_string(rcu_dereference_raw(ci->i_cached_layout.pool_ns)); 615355da1ebSSage Weil } 616355da1ebSSage Weil 617224a7542SYan, Zheng static inline blkcnt_t calc_inode_blocks(u64 size) 618224a7542SYan, Zheng { 619224a7542SYan, Zheng return (size + (1<<9) - 1) >> 9; 620224a7542SYan, Zheng } 621224a7542SYan, Zheng 622355da1ebSSage Weil /* 623355da1ebSSage Weil * Helpers to fill in size, ctime, mtime, and atime. We have to be 624355da1ebSSage Weil * careful because either the client or MDS may have more up to date 625355da1ebSSage Weil * info, depending on which capabilities are held, and whether 626355da1ebSSage Weil * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime 627355da1ebSSage Weil * and size are monotonically increasing, except when utimes() or 628355da1ebSSage Weil * truncate() increments the corresponding _seq values.) 629355da1ebSSage Weil */ 630355da1ebSSage Weil int ceph_fill_file_size(struct inode *inode, int issued, 631355da1ebSSage Weil u32 truncate_seq, u64 truncate_size, u64 size) 632355da1ebSSage Weil { 633355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 634355da1ebSSage Weil int queue_trunc = 0; 6352d6795fbSJeff Layton loff_t isize = i_size_read(inode); 636355da1ebSSage Weil 637355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || 6382d6795fbSJeff Layton (truncate_seq == ci->i_truncate_seq && size > isize)) { 6392d6795fbSJeff Layton dout("size %lld -> %llu\n", isize, size); 640a3d714c3SYan, Zheng if (size > 0 && S_ISDIR(inode->i_mode)) { 641a3d714c3SYan, Zheng pr_err("fill_file_size non-zero size for directory\n"); 642a3d714c3SYan, Zheng size = 0; 643a3d714c3SYan, Zheng } 64499c88e69SYan, Zheng i_size_write(inode, size); 645224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 646355da1ebSSage Weil ci->i_reported_size = size; 647355da1ebSSage Weil if (truncate_seq != ci->i_truncate_seq) { 648355da1ebSSage Weil dout("truncate_seq %u -> %u\n", 649355da1ebSSage Weil ci->i_truncate_seq, truncate_seq); 650355da1ebSSage Weil ci->i_truncate_seq = truncate_seq; 651b0d7c223SYan, Zheng 652b0d7c223SYan, Zheng /* the MDS should have revoked these caps */ 653b0d7c223SYan, Zheng WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | 654b0d7c223SYan, Zheng CEPH_CAP_FILE_RD | 655b0d7c223SYan, Zheng CEPH_CAP_FILE_WR | 656b0d7c223SYan, Zheng CEPH_CAP_FILE_LAZYIO)); 6573d497d85SYehuda Sadeh /* 6583d497d85SYehuda Sadeh * If we hold relevant caps, or in the case where we're 6593d497d85SYehuda Sadeh * not the only client referencing this file and we 6603d497d85SYehuda Sadeh * don't hold those caps, then we need to check whether 6613d497d85SYehuda Sadeh * the file is either opened or mmaped 6623d497d85SYehuda Sadeh */ 663b0d7c223SYan, Zheng if ((issued & (CEPH_CAP_FILE_CACHE| 664b0d7c223SYan, Zheng CEPH_CAP_FILE_BUFFER)) || 6653d497d85SYehuda Sadeh mapping_mapped(inode->i_mapping) || 666719a2514SYan, Zheng __ceph_is_file_opened(ci)) { 667355da1ebSSage Weil ci->i_truncate_pending++; 668355da1ebSSage Weil queue_trunc = 1; 669355da1ebSSage Weil } 670355da1ebSSage Weil } 671355da1ebSSage Weil } 672355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && 673355da1ebSSage Weil ci->i_truncate_size != truncate_size) { 674355da1ebSSage Weil dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, 675355da1ebSSage Weil truncate_size); 676355da1ebSSage Weil ci->i_truncate_size = truncate_size; 677355da1ebSSage Weil } 67899ccbd22SMilosz Tanski 67999ccbd22SMilosz Tanski if (queue_trunc) 68099ccbd22SMilosz Tanski ceph_fscache_invalidate(inode); 68199ccbd22SMilosz Tanski 682355da1ebSSage Weil return queue_trunc; 683355da1ebSSage Weil } 684355da1ebSSage Weil 685355da1ebSSage Weil void ceph_fill_file_time(struct inode *inode, int issued, 6869bbeab41SArnd Bergmann u64 time_warp_seq, struct timespec64 *ctime, 6879bbeab41SArnd Bergmann struct timespec64 *mtime, struct timespec64 *atime) 688355da1ebSSage Weil { 689355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 690355da1ebSSage Weil int warn = 0; 691355da1ebSSage Weil 692355da1ebSSage Weil if (issued & (CEPH_CAP_FILE_EXCL| 693355da1ebSSage Weil CEPH_CAP_FILE_WR| 694d8672d64SSage Weil CEPH_CAP_FILE_BUFFER| 695d8672d64SSage Weil CEPH_CAP_AUTH_EXCL| 696d8672d64SSage Weil CEPH_CAP_XATTR_EXCL)) { 697ffdeec7aSYan, Zheng if (ci->i_version == 0 || 6989bbeab41SArnd Bergmann timespec64_compare(ctime, &inode->i_ctime) > 0) { 69913442b03SDeepa Dinamani dout("ctime %lld.%09ld -> %lld.%09ld inc w/ cap\n", 7009bbeab41SArnd Bergmann inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 7019bbeab41SArnd Bergmann ctime->tv_sec, ctime->tv_nsec); 7029bbeab41SArnd Bergmann inode->i_ctime = *ctime; 703355da1ebSSage Weil } 704ffdeec7aSYan, Zheng if (ci->i_version == 0 || 705ffdeec7aSYan, Zheng ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { 706355da1ebSSage Weil /* the MDS did a utimes() */ 70713442b03SDeepa Dinamani dout("mtime %lld.%09ld -> %lld.%09ld " 708355da1ebSSage Weil "tw %d -> %d\n", 7099bbeab41SArnd Bergmann inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 7109bbeab41SArnd Bergmann mtime->tv_sec, mtime->tv_nsec, 711355da1ebSSage Weil ci->i_time_warp_seq, (int)time_warp_seq); 712355da1ebSSage Weil 7139bbeab41SArnd Bergmann inode->i_mtime = *mtime; 7149bbeab41SArnd Bergmann inode->i_atime = *atime; 715355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 716355da1ebSSage Weil } else if (time_warp_seq == ci->i_time_warp_seq) { 717355da1ebSSage Weil /* nobody did utimes(); take the max */ 7189bbeab41SArnd Bergmann if (timespec64_compare(mtime, &inode->i_mtime) > 0) { 71913442b03SDeepa Dinamani dout("mtime %lld.%09ld -> %lld.%09ld inc\n", 7209bbeab41SArnd Bergmann inode->i_mtime.tv_sec, 721355da1ebSSage Weil inode->i_mtime.tv_nsec, 7229bbeab41SArnd Bergmann mtime->tv_sec, mtime->tv_nsec); 7239bbeab41SArnd Bergmann inode->i_mtime = *mtime; 724355da1ebSSage Weil } 7259bbeab41SArnd Bergmann if (timespec64_compare(atime, &inode->i_atime) > 0) { 72613442b03SDeepa Dinamani dout("atime %lld.%09ld -> %lld.%09ld inc\n", 7279bbeab41SArnd Bergmann inode->i_atime.tv_sec, 728355da1ebSSage Weil inode->i_atime.tv_nsec, 7299bbeab41SArnd Bergmann atime->tv_sec, atime->tv_nsec); 7309bbeab41SArnd Bergmann inode->i_atime = *atime; 731355da1ebSSage Weil } 732355da1ebSSage Weil } else if (issued & CEPH_CAP_FILE_EXCL) { 733355da1ebSSage Weil /* we did a utimes(); ignore mds values */ 734355da1ebSSage Weil } else { 735355da1ebSSage Weil warn = 1; 736355da1ebSSage Weil } 737355da1ebSSage Weil } else { 738d8672d64SSage Weil /* we have no write|excl caps; whatever the MDS says is true */ 739355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { 7409bbeab41SArnd Bergmann inode->i_ctime = *ctime; 7419bbeab41SArnd Bergmann inode->i_mtime = *mtime; 7429bbeab41SArnd Bergmann inode->i_atime = *atime; 743355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 744355da1ebSSage Weil } else { 745355da1ebSSage Weil warn = 1; 746355da1ebSSage Weil } 747355da1ebSSage Weil } 748355da1ebSSage Weil if (warn) /* time_warp_seq shouldn't go backwards */ 749355da1ebSSage Weil dout("%p mds time_warp_seq %llu < %u\n", 750355da1ebSSage Weil inode, time_warp_seq, ci->i_time_warp_seq); 751355da1ebSSage Weil } 752355da1ebSSage Weil 753355da1ebSSage Weil /* 754355da1ebSSage Weil * Populate an inode based on info from mds. May be called on new or 755355da1ebSSage Weil * existing inodes. 756355da1ebSSage Weil */ 757966c7160SJeff Layton int ceph_fill_inode(struct inode *inode, struct page *locked_page, 758355da1ebSSage Weil struct ceph_mds_reply_info_in *iinfo, 759355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo, 76057c21994SJeff Layton struct ceph_mds_session *session, int cap_fmode, 761355da1ebSSage Weil struct ceph_cap_reservation *caps_reservation) 762355da1ebSSage Weil { 7632678da88SXiubo Li struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); 764355da1ebSSage Weil struct ceph_mds_reply_inode *info = iinfo->in; 765355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 7662af54a72SYan, Zheng int issued, new_issued, info_caps; 7679bbeab41SArnd Bergmann struct timespec64 mtime, atime, ctime; 768355da1ebSSage Weil struct ceph_buffer *xattr_blob = NULL; 769af8a85a4SLuis Henriques struct ceph_buffer *old_blob = NULL; 770779fe0fbSYan, Zheng struct ceph_string *pool_ns = NULL; 771d9df2783SYan, Zheng struct ceph_cap *new_cap = NULL; 772355da1ebSSage Weil int err = 0; 773d9df2783SYan, Zheng bool wake = false; 774f98a128aSYan, Zheng bool queue_trunc = false; 775f98a128aSYan, Zheng bool new_version = false; 77631c542a1SYan, Zheng bool fill_inline = false; 777ed94f87cSJeff Layton umode_t mode = le32_to_cpu(info->mode); 778ed94f87cSJeff Layton dev_t rdev = le32_to_cpu(info->rdev); 779355da1ebSSage Weil 780*27171ae6SJeff Layton lockdep_assert_held(&mdsc->snap_rwsem); 781*27171ae6SJeff Layton 782966c7160SJeff Layton dout("%s %p ino %llx.%llx v %llu had %llu\n", __func__, 783355da1ebSSage Weil inode, ceph_vinop(inode), le64_to_cpu(info->version), 784355da1ebSSage Weil ci->i_version); 785355da1ebSSage Weil 786ed94f87cSJeff Layton /* Once I_NEW is cleared, we can't change type or dev numbers */ 787ed94f87cSJeff Layton if (inode->i_state & I_NEW) { 788ed94f87cSJeff Layton inode->i_mode = mode; 789ed94f87cSJeff Layton } else { 790ed94f87cSJeff Layton if (inode_wrong_type(inode, mode)) { 791ed94f87cSJeff Layton pr_warn_once("inode type changed! (ino %llx.%llx is 0%o, mds says 0%o)\n", 792ed94f87cSJeff Layton ceph_vinop(inode), inode->i_mode, mode); 793ed94f87cSJeff Layton return -ESTALE; 794ed94f87cSJeff Layton } 795ed94f87cSJeff Layton 796ed94f87cSJeff Layton if ((S_ISCHR(mode) || S_ISBLK(mode)) && inode->i_rdev != rdev) { 797ed94f87cSJeff Layton pr_warn_once("dev inode rdev changed! (ino %llx.%llx is %u:%u, mds says %u:%u)\n", 798ed94f87cSJeff Layton ceph_vinop(inode), MAJOR(inode->i_rdev), 799ed94f87cSJeff Layton MINOR(inode->i_rdev), MAJOR(rdev), 800ed94f87cSJeff Layton MINOR(rdev)); 801ed94f87cSJeff Layton return -ESTALE; 802ed94f87cSJeff Layton } 803ed94f87cSJeff Layton } 804ed94f87cSJeff Layton 8052af54a72SYan, Zheng info_caps = le32_to_cpu(info->cap.caps); 8062af54a72SYan, Zheng 807d9df2783SYan, Zheng /* prealloc new cap struct */ 8089a6bed4fSJeff Layton if (info_caps && ceph_snap(inode) == CEPH_NOSNAP) { 809d9df2783SYan, Zheng new_cap = ceph_get_cap(mdsc, caps_reservation); 8109a6bed4fSJeff Layton if (!new_cap) 8119a6bed4fSJeff Layton return -ENOMEM; 8129a6bed4fSJeff Layton } 813d9df2783SYan, Zheng 814355da1ebSSage Weil /* 815355da1ebSSage Weil * prealloc xattr data, if it looks like we'll need it. only 816355da1ebSSage Weil * if len > 4 (meaning there are actually xattrs; the first 4 817355da1ebSSage Weil * bytes are the xattr count). 818355da1ebSSage Weil */ 819355da1ebSSage Weil if (iinfo->xattr_len > 4) { 820b6c1d5b8SSage Weil xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); 821355da1ebSSage Weil if (!xattr_blob) 822966c7160SJeff Layton pr_err("%s ENOMEM xattr blob %d bytes\n", __func__, 823355da1ebSSage Weil iinfo->xattr_len); 824355da1ebSSage Weil } 825355da1ebSSage Weil 826779fe0fbSYan, Zheng if (iinfo->pool_ns_len > 0) 827779fe0fbSYan, Zheng pool_ns = ceph_find_or_create_string(iinfo->pool_ns_data, 828779fe0fbSYan, Zheng iinfo->pool_ns_len); 829779fe0fbSYan, Zheng 83075c9627eSYan, Zheng if (ceph_snap(inode) != CEPH_NOSNAP && !ci->i_snapid_map) 83175c9627eSYan, Zheng ci->i_snapid_map = ceph_get_snapid_map(mdsc, ceph_snap(inode)); 83275c9627eSYan, Zheng 833be655596SSage Weil spin_lock(&ci->i_ceph_lock); 834355da1ebSSage Weil 835355da1ebSSage Weil /* 836355da1ebSSage Weil * provided version will be odd if inode value is projected, 8378bd59e01SSage Weil * even if stable. skip the update if we have newer stable 8388bd59e01SSage Weil * info (ours>=theirs, e.g. due to racing mds replies), unless 8398bd59e01SSage Weil * we are getting projected (unstable) info (in which case the 8408bd59e01SSage Weil * version is odd, and we want ours>theirs). 8418bd59e01SSage Weil * us them 8428bd59e01SSage Weil * 2 2 skip 8438bd59e01SSage Weil * 3 2 skip 8448bd59e01SSage Weil * 3 3 update 845355da1ebSSage Weil */ 846f98a128aSYan, Zheng if (ci->i_version == 0 || 847f98a128aSYan, Zheng ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 848f98a128aSYan, Zheng le64_to_cpu(info->version) > (ci->i_version & ~1))) 849f98a128aSYan, Zheng new_version = true; 850355da1ebSSage Weil 851a35ead31SJeff Layton /* Update change_attribute */ 852a35ead31SJeff Layton inode_set_max_iversion_raw(inode, iinfo->change_attr); 853a35ead31SJeff Layton 8542af54a72SYan, Zheng __ceph_caps_issued(ci, &issued); 8552af54a72SYan, Zheng issued |= __ceph_caps_dirty(ci); 8562af54a72SYan, Zheng new_issued = ~issued & info_caps; 857355da1ebSSage Weil 85875067034SLuis Henriques /* directories have fl_stripe_unit set to zero */ 85975067034SLuis Henriques if (le32_to_cpu(info->layout.fl_stripe_unit)) 86075067034SLuis Henriques inode->i_blkbits = 86175067034SLuis Henriques fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; 86275067034SLuis Henriques else 86375067034SLuis Henriques inode->i_blkbits = CEPH_BLOCK_SHIFT; 864355da1ebSSage Weil 865d557c48dSLuis Henriques __ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files); 866fb18a575SLuis Henriques 867f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && 868f98a128aSYan, Zheng (issued & CEPH_CAP_AUTH_EXCL) == 0) { 869ed94f87cSJeff Layton inode->i_mode = mode; 870ab871b90SEric W. Biederman inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); 871ab871b90SEric W. Biederman inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); 872355da1ebSSage Weil dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, 873bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 874bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid)); 875245ce991SJeff Layton ceph_decode_timespec64(&ci->i_btime, &iinfo->btime); 876193e7b37SDavid Disseldorp ceph_decode_timespec64(&ci->i_snap_btime, &iinfo->snap_btime); 877355da1ebSSage Weil } 878355da1ebSSage Weil 879f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && 880f98a128aSYan, Zheng (issued & CEPH_CAP_LINK_EXCL) == 0) 881bfe86848SMiklos Szeredi set_nlink(inode, le32_to_cpu(info->nlink)); 882355da1ebSSage Weil 883f98a128aSYan, Zheng if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { 884355da1ebSSage Weil /* be careful with mtime, atime, size */ 8859bbeab41SArnd Bergmann ceph_decode_timespec64(&atime, &info->atime); 8869bbeab41SArnd Bergmann ceph_decode_timespec64(&mtime, &info->mtime); 8879bbeab41SArnd Bergmann ceph_decode_timespec64(&ctime, &info->ctime); 888f98a128aSYan, Zheng ceph_fill_file_time(inode, issued, 889f98a128aSYan, Zheng le32_to_cpu(info->time_warp_seq), 890f98a128aSYan, Zheng &ctime, &mtime, &atime); 891f98a128aSYan, Zheng } 892f98a128aSYan, Zheng 8932af54a72SYan, Zheng if (new_version || (info_caps & CEPH_CAP_FILE_SHARED)) { 8942af54a72SYan, Zheng ci->i_files = le64_to_cpu(info->files); 8952af54a72SYan, Zheng ci->i_subdirs = le64_to_cpu(info->subdirs); 8962af54a72SYan, Zheng } 8972af54a72SYan, Zheng 898f98a128aSYan, Zheng if (new_version || 899f98a128aSYan, Zheng (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { 9007627151eSYan, Zheng s64 old_pool = ci->i_layout.pool_id; 901779fe0fbSYan, Zheng struct ceph_string *old_ns; 902779fe0fbSYan, Zheng 9037627151eSYan, Zheng ceph_file_layout_from_legacy(&ci->i_layout, &info->layout); 904779fe0fbSYan, Zheng old_ns = rcu_dereference_protected(ci->i_layout.pool_ns, 905779fe0fbSYan, Zheng lockdep_is_held(&ci->i_ceph_lock)); 906779fe0fbSYan, Zheng rcu_assign_pointer(ci->i_layout.pool_ns, pool_ns); 907779fe0fbSYan, Zheng 908779fe0fbSYan, Zheng if (ci->i_layout.pool_id != old_pool || pool_ns != old_ns) 90910183a69SYan, Zheng ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; 91010183a69SYan, Zheng 911779fe0fbSYan, Zheng pool_ns = old_ns; 912f98a128aSYan, Zheng 913355da1ebSSage Weil queue_trunc = ceph_fill_file_size(inode, issued, 914355da1ebSSage Weil le32_to_cpu(info->truncate_seq), 915355da1ebSSage Weil le64_to_cpu(info->truncate_size), 916355da1ebSSage Weil le64_to_cpu(info->size)); 917f98a128aSYan, Zheng /* only update max_size on auth cap */ 918f98a128aSYan, Zheng if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 919f98a128aSYan, Zheng ci->i_max_size != le64_to_cpu(info->max_size)) { 920f98a128aSYan, Zheng dout("max_size %lld -> %llu\n", ci->i_max_size, 921f98a128aSYan, Zheng le64_to_cpu(info->max_size)); 922f98a128aSYan, Zheng ci->i_max_size = le64_to_cpu(info->max_size); 923f98a128aSYan, Zheng } 924f98a128aSYan, Zheng } 925355da1ebSSage Weil 92649a9f4f6SYan, Zheng /* layout and rstat are not tracked by capability, update them if 92749a9f4f6SYan, Zheng * the inode info is from auth mds */ 92849a9f4f6SYan, Zheng if (new_version || (info->cap.flags & CEPH_CAP_FLAG_AUTH)) { 92949a9f4f6SYan, Zheng if (S_ISDIR(inode->i_mode)) { 93049a9f4f6SYan, Zheng ci->i_dir_layout = iinfo->dir_layout; 93149a9f4f6SYan, Zheng ci->i_rbytes = le64_to_cpu(info->rbytes); 93249a9f4f6SYan, Zheng ci->i_rfiles = le64_to_cpu(info->rfiles); 93349a9f4f6SYan, Zheng ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); 93408796873SYan, Zheng ci->i_dir_pin = iinfo->dir_pin; 935e7f72952SYanhu Cao ci->i_rsnaps = iinfo->rsnaps; 9369bbeab41SArnd Bergmann ceph_decode_timespec64(&ci->i_rctime, &info->rctime); 93749a9f4f6SYan, Zheng } 93849a9f4f6SYan, Zheng } 93949a9f4f6SYan, Zheng 940355da1ebSSage Weil /* xattrs */ 941355da1ebSSage Weil /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ 942508b32d8SYan, Zheng if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && 943355da1ebSSage Weil le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { 944355da1ebSSage Weil if (ci->i_xattrs.blob) 945af8a85a4SLuis Henriques old_blob = ci->i_xattrs.blob; 946355da1ebSSage Weil ci->i_xattrs.blob = xattr_blob; 947355da1ebSSage Weil if (xattr_blob) 948355da1ebSSage Weil memcpy(ci->i_xattrs.blob->vec.iov_base, 949355da1ebSSage Weil iinfo->xattr_data, iinfo->xattr_len); 950355da1ebSSage Weil ci->i_xattrs.version = le64_to_cpu(info->xattr_version); 9517221fe4cSGuangliang Zhao ceph_forget_all_cached_acls(inode); 952ac6713ccSYan, Zheng ceph_security_invalidate_secctx(inode); 953a6424e48SSage Weil xattr_blob = NULL; 954355da1ebSSage Weil } 955355da1ebSSage Weil 956ffdeec7aSYan, Zheng /* finally update i_version */ 957aae1a442SYan, Zheng if (le64_to_cpu(info->version) > ci->i_version) 958ffdeec7aSYan, Zheng ci->i_version = le64_to_cpu(info->version); 959ffdeec7aSYan, Zheng 960355da1ebSSage Weil inode->i_mapping->a_ops = &ceph_aops; 961355da1ebSSage Weil 962355da1ebSSage Weil switch (inode->i_mode & S_IFMT) { 963355da1ebSSage Weil case S_IFIFO: 964355da1ebSSage Weil case S_IFBLK: 965355da1ebSSage Weil case S_IFCHR: 966355da1ebSSage Weil case S_IFSOCK: 9675ba72e60SYan, Zheng inode->i_blkbits = PAGE_SHIFT; 968ed94f87cSJeff Layton init_special_inode(inode, inode->i_mode, rdev); 969355da1ebSSage Weil inode->i_op = &ceph_file_iops; 970355da1ebSSage Weil break; 971355da1ebSSage Weil case S_IFREG: 972355da1ebSSage Weil inode->i_op = &ceph_file_iops; 973355da1ebSSage Weil inode->i_fop = &ceph_file_fops; 974355da1ebSSage Weil break; 975355da1ebSSage Weil case S_IFLNK: 976355da1ebSSage Weil inode->i_op = &ceph_symlink_iops; 977355da1ebSSage Weil if (!ci->i_symlink) { 978810339ecSXi Wang u32 symlen = iinfo->symlink_len; 979355da1ebSSage Weil char *sym; 980355da1ebSSage Weil 981be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 982355da1ebSSage Weil 983224a7542SYan, Zheng if (symlen != i_size_read(inode)) { 984966c7160SJeff Layton pr_err("%s %llx.%llx BAD symlink " 985966c7160SJeff Layton "size %lld\n", __func__, 986966c7160SJeff Layton ceph_vinop(inode), 987224a7542SYan, Zheng i_size_read(inode)); 988224a7542SYan, Zheng i_size_write(inode, symlen); 989224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(symlen); 990224a7542SYan, Zheng } 991810339ecSXi Wang 992355da1ebSSage Weil err = -ENOMEM; 993810339ecSXi Wang sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); 994355da1ebSSage Weil if (!sym) 995355da1ebSSage Weil goto out; 996355da1ebSSage Weil 997be655596SSage Weil spin_lock(&ci->i_ceph_lock); 998355da1ebSSage Weil if (!ci->i_symlink) 999355da1ebSSage Weil ci->i_symlink = sym; 1000355da1ebSSage Weil else 1001355da1ebSSage Weil kfree(sym); /* lost a race */ 1002355da1ebSSage Weil } 1003ac194dccSAl Viro inode->i_link = ci->i_symlink; 1004355da1ebSSage Weil break; 1005355da1ebSSage Weil case S_IFDIR: 1006355da1ebSSage Weil inode->i_op = &ceph_dir_iops; 1007355da1ebSSage Weil inode->i_fop = &ceph_dir_fops; 1008355da1ebSSage Weil break; 1009355da1ebSSage Weil default: 1010966c7160SJeff Layton pr_err("%s %llx.%llx BAD mode 0%o\n", __func__, 1011355da1ebSSage Weil ceph_vinop(inode), inode->i_mode); 1012355da1ebSSage Weil } 1013355da1ebSSage Weil 1014355da1ebSSage Weil /* were we issued a capability? */ 10152af54a72SYan, Zheng if (info_caps) { 1016355da1ebSSage Weil if (ceph_snap(inode) == CEPH_NOSNAP) { 1017355da1ebSSage Weil ceph_add_cap(inode, session, 1018355da1ebSSage Weil le64_to_cpu(info->cap.cap_id), 1019135e671eSYan, Zheng info_caps, 1020355da1ebSSage Weil le32_to_cpu(info->cap.wanted), 1021355da1ebSSage Weil le32_to_cpu(info->cap.seq), 1022355da1ebSSage Weil le32_to_cpu(info->cap.mseq), 1023355da1ebSSage Weil le64_to_cpu(info->cap.realm), 1024d9df2783SYan, Zheng info->cap.flags, &new_cap); 10252f92b3d0SYan, Zheng 10262f92b3d0SYan, Zheng /* set dir completion flag? */ 10272f92b3d0SYan, Zheng if (S_ISDIR(inode->i_mode) && 10282f92b3d0SYan, Zheng ci->i_files == 0 && ci->i_subdirs == 0 && 10292af54a72SYan, Zheng (info_caps & CEPH_CAP_FILE_SHARED) && 10302f92b3d0SYan, Zheng (issued & CEPH_CAP_FILE_EXCL) == 0 && 10312f92b3d0SYan, Zheng !__ceph_dir_is_complete(ci)) { 10322f92b3d0SYan, Zheng dout(" marking %p complete (empty)\n", inode); 1033fdd4e158SYan, Zheng i_size_write(inode, 0); 10342f92b3d0SYan, Zheng __ceph_dir_set_complete(ci, 1035fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count), 1036fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count)); 10372f92b3d0SYan, Zheng } 10382f92b3d0SYan, Zheng 1039d9df2783SYan, Zheng wake = true; 1040355da1ebSSage Weil } else { 1041355da1ebSSage Weil dout(" %p got snap_caps %s\n", inode, 10422af54a72SYan, Zheng ceph_cap_string(info_caps)); 10432af54a72SYan, Zheng ci->i_snap_caps |= info_caps; 1044355da1ebSSage Weil } 1045355da1ebSSage Weil } 104631c542a1SYan, Zheng 104731c542a1SYan, Zheng if (iinfo->inline_version > 0 && 104831c542a1SYan, Zheng iinfo->inline_version >= ci->i_inline_version) { 104931c542a1SYan, Zheng int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; 105031c542a1SYan, Zheng ci->i_inline_version = iinfo->inline_version; 105131c542a1SYan, Zheng if (ci->i_inline_version != CEPH_INLINE_NONE && 10522af54a72SYan, Zheng (locked_page || (info_caps & cache_caps))) 105331c542a1SYan, Zheng fill_inline = true; 105431c542a1SYan, Zheng } 105531c542a1SYan, Zheng 1056719a2514SYan, Zheng if (cap_fmode >= 0) { 1057719a2514SYan, Zheng if (!info_caps) 1058719a2514SYan, Zheng pr_warn("mds issued no caps on %llx.%llx\n", 1059719a2514SYan, Zheng ceph_vinop(inode)); 1060719a2514SYan, Zheng __ceph_touch_fmode(ci, mdsc, cap_fmode); 1061719a2514SYan, Zheng } 1062719a2514SYan, Zheng 1063355da1ebSSage Weil spin_unlock(&ci->i_ceph_lock); 1064355da1ebSSage Weil 106531c542a1SYan, Zheng if (fill_inline) 106601deead0SYan, Zheng ceph_fill_inline_data(inode, locked_page, 106731c542a1SYan, Zheng iinfo->inline_data, iinfo->inline_len); 106831c542a1SYan, Zheng 1069d9df2783SYan, Zheng if (wake) 1070d9df2783SYan, Zheng wake_up_all(&ci->i_cap_wq); 1071d9df2783SYan, Zheng 1072355da1ebSSage Weil /* queue truncate if we saw i_size decrease */ 1073355da1ebSSage Weil if (queue_trunc) 1074355da1ebSSage Weil ceph_queue_vmtruncate(inode); 1075355da1ebSSage Weil 1076355da1ebSSage Weil /* populate frag tree */ 10773e7fbe9cSYan, Zheng if (S_ISDIR(inode->i_mode)) 10783e7fbe9cSYan, Zheng ceph_fill_fragtree(inode, &info->fragtree, dirinfo); 1079355da1ebSSage Weil 1080355da1ebSSage Weil /* update delegation info? */ 1081355da1ebSSage Weil if (dirinfo) 1082355da1ebSSage Weil ceph_fill_dirfrag(inode, dirinfo); 1083355da1ebSSage Weil 1084355da1ebSSage Weil err = 0; 1085355da1ebSSage Weil out: 1086d9df2783SYan, Zheng if (new_cap) 1087d9df2783SYan, Zheng ceph_put_cap(mdsc, new_cap); 1088af8a85a4SLuis Henriques ceph_buffer_put(old_blob); 1089355da1ebSSage Weil ceph_buffer_put(xattr_blob); 1090779fe0fbSYan, Zheng ceph_put_string(pool_ns); 1091355da1ebSSage Weil return err; 1092355da1ebSSage Weil } 1093355da1ebSSage Weil 1094355da1ebSSage Weil /* 1095543212b3SYan, Zheng * caller should hold session s_mutex and dentry->d_lock. 1096355da1ebSSage Weil */ 1097543212b3SYan, Zheng static void __update_dentry_lease(struct inode *dir, struct dentry *dentry, 1098355da1ebSSage Weil struct ceph_mds_reply_lease *lease, 1099355da1ebSSage Weil struct ceph_mds_session *session, 1100f5d55f03SJeff Layton unsigned long from_time, 1101543212b3SYan, Zheng struct ceph_mds_session **old_lease_session) 1102355da1ebSSage Weil { 1103355da1ebSSage Weil struct ceph_dentry_info *di = ceph_dentry(dentry); 1104f5e17aedSJeff Layton unsigned mask = le16_to_cpu(lease->mask); 1105355da1ebSSage Weil long unsigned duration = le32_to_cpu(lease->duration_ms); 1106355da1ebSSage Weil long unsigned ttl = from_time + (duration * HZ) / 1000; 1107355da1ebSSage Weil long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; 1108355da1ebSSage Weil 11092f90b852SSage Weil dout("update_dentry_lease %p duration %lu ms ttl %lu\n", 11102f90b852SSage Weil dentry, duration, ttl); 1111355da1ebSSage Weil 111218fc8abdSAl Viro /* only track leases on regular dentries */ 111318fc8abdSAl Viro if (ceph_snap(dir) != CEPH_NOSNAP) 1114543212b3SYan, Zheng return; 111518fc8abdSAl Viro 1116f5e17aedSJeff Layton if (mask & CEPH_LEASE_PRIMARY_LINK) 1117f5e17aedSJeff Layton di->flags |= CEPH_DENTRY_PRIMARY_LINK; 1118f5e17aedSJeff Layton else 1119f5e17aedSJeff Layton di->flags &= ~CEPH_DENTRY_PRIMARY_LINK; 1120f5e17aedSJeff Layton 112197aeb6bfSYan, Zheng di->lease_shared_gen = atomic_read(&ceph_inode(dir)->i_shared_gen); 1122f5e17aedSJeff Layton if (!(mask & CEPH_LEASE_VALID)) { 112337c4efc1SYan, Zheng __ceph_dentry_dir_lease_touch(di); 1124543212b3SYan, Zheng return; 112537c4efc1SYan, Zheng } 1126355da1ebSSage Weil 1127355da1ebSSage Weil if (di->lease_gen == session->s_cap_gen && 11289b16f03cSMiklos Szeredi time_before(ttl, di->time)) 1129543212b3SYan, Zheng return; /* we already have a newer lease. */ 1130355da1ebSSage Weil 1131481f001fSYan, Zheng if (di->lease_session && di->lease_session != session) { 1132543212b3SYan, Zheng *old_lease_session = di->lease_session; 1133481f001fSYan, Zheng di->lease_session = NULL; 1134481f001fSYan, Zheng } 1135355da1ebSSage Weil 1136355da1ebSSage Weil if (!di->lease_session) 1137355da1ebSSage Weil di->lease_session = ceph_get_mds_session(session); 1138355da1ebSSage Weil di->lease_gen = session->s_cap_gen; 1139355da1ebSSage Weil di->lease_seq = le32_to_cpu(lease->seq); 1140355da1ebSSage Weil di->lease_renew_after = half_ttl; 1141355da1ebSSage Weil di->lease_renew_from = 0; 11429b16f03cSMiklos Szeredi di->time = ttl; 114337c4efc1SYan, Zheng 114437c4efc1SYan, Zheng __ceph_dentry_lease_touch(di); 1145543212b3SYan, Zheng } 1146543212b3SYan, Zheng 1147543212b3SYan, Zheng static inline void update_dentry_lease(struct inode *dir, struct dentry *dentry, 1148543212b3SYan, Zheng struct ceph_mds_reply_lease *lease, 1149543212b3SYan, Zheng struct ceph_mds_session *session, 1150543212b3SYan, Zheng unsigned long from_time) 1151543212b3SYan, Zheng { 1152543212b3SYan, Zheng struct ceph_mds_session *old_lease_session = NULL; 1153543212b3SYan, Zheng spin_lock(&dentry->d_lock); 1154543212b3SYan, Zheng __update_dentry_lease(dir, dentry, lease, session, from_time, 1155543212b3SYan, Zheng &old_lease_session); 1156543212b3SYan, Zheng spin_unlock(&dentry->d_lock); 1157543212b3SYan, Zheng if (old_lease_session) 1158543212b3SYan, Zheng ceph_put_mds_session(old_lease_session); 1159543212b3SYan, Zheng } 1160543212b3SYan, Zheng 1161543212b3SYan, Zheng /* 1162543212b3SYan, Zheng * update dentry lease without having parent inode locked 1163543212b3SYan, Zheng */ 1164543212b3SYan, Zheng static void update_dentry_lease_careful(struct dentry *dentry, 1165543212b3SYan, Zheng struct ceph_mds_reply_lease *lease, 1166543212b3SYan, Zheng struct ceph_mds_session *session, 1167543212b3SYan, Zheng unsigned long from_time, 1168543212b3SYan, Zheng char *dname, u32 dname_len, 1169543212b3SYan, Zheng struct ceph_vino *pdvino, 1170543212b3SYan, Zheng struct ceph_vino *ptvino) 1171543212b3SYan, Zheng 1172543212b3SYan, Zheng { 1173543212b3SYan, Zheng struct inode *dir; 1174543212b3SYan, Zheng struct ceph_mds_session *old_lease_session = NULL; 1175543212b3SYan, Zheng 1176543212b3SYan, Zheng spin_lock(&dentry->d_lock); 1177543212b3SYan, Zheng /* make sure dentry's name matches target */ 1178543212b3SYan, Zheng if (dentry->d_name.len != dname_len || 1179543212b3SYan, Zheng memcmp(dentry->d_name.name, dname, dname_len)) 1180543212b3SYan, Zheng goto out_unlock; 1181543212b3SYan, Zheng 1182543212b3SYan, Zheng dir = d_inode(dentry->d_parent); 1183543212b3SYan, Zheng /* make sure parent matches dvino */ 1184543212b3SYan, Zheng if (!ceph_ino_compare(dir, pdvino)) 1185543212b3SYan, Zheng goto out_unlock; 1186543212b3SYan, Zheng 1187543212b3SYan, Zheng /* make sure dentry's inode matches target. NULL ptvino means that 1188543212b3SYan, Zheng * we expect a negative dentry */ 1189543212b3SYan, Zheng if (ptvino) { 1190543212b3SYan, Zheng if (d_really_is_negative(dentry)) 1191543212b3SYan, Zheng goto out_unlock; 1192543212b3SYan, Zheng if (!ceph_ino_compare(d_inode(dentry), ptvino)) 1193543212b3SYan, Zheng goto out_unlock; 1194543212b3SYan, Zheng } else { 1195543212b3SYan, Zheng if (d_really_is_positive(dentry)) 1196543212b3SYan, Zheng goto out_unlock; 1197543212b3SYan, Zheng } 1198543212b3SYan, Zheng 1199543212b3SYan, Zheng __update_dentry_lease(dir, dentry, lease, session, 1200543212b3SYan, Zheng from_time, &old_lease_session); 1201355da1ebSSage Weil out_unlock: 1202355da1ebSSage Weil spin_unlock(&dentry->d_lock); 1203481f001fSYan, Zheng if (old_lease_session) 1204481f001fSYan, Zheng ceph_put_mds_session(old_lease_session); 1205355da1ebSSage Weil } 1206355da1ebSSage Weil 1207355da1ebSSage Weil /* 12081cd3935bSSage Weil * splice a dentry to an inode. 12091cd3935bSSage Weil * caller must hold directory i_mutex for this to be safe. 12101cd3935bSSage Weil */ 12112bf996acSYan, Zheng static int splice_dentry(struct dentry **pdn, struct inode *in) 12121cd3935bSSage Weil { 12132bf996acSYan, Zheng struct dentry *dn = *pdn; 12141cd3935bSSage Weil struct dentry *realdn; 12151cd3935bSSage Weil 12162b0143b5SDavid Howells BUG_ON(d_inode(dn)); 12171cd3935bSSage Weil 12185495c2d0SYan, Zheng if (S_ISDIR(in->i_mode)) { 12195495c2d0SYan, Zheng /* If inode is directory, d_splice_alias() below will remove 12205495c2d0SYan, Zheng * 'realdn' from its origin parent. We need to ensure that 12215495c2d0SYan, Zheng * origin parent's readdir cache will not reference 'realdn' 12225495c2d0SYan, Zheng */ 12235495c2d0SYan, Zheng realdn = d_find_any_alias(in); 12245495c2d0SYan, Zheng if (realdn) { 12255495c2d0SYan, Zheng struct ceph_dentry_info *di = ceph_dentry(realdn); 12265495c2d0SYan, Zheng spin_lock(&realdn->d_lock); 12275495c2d0SYan, Zheng 12285495c2d0SYan, Zheng realdn->d_op->d_prune(realdn); 12295495c2d0SYan, Zheng 12305495c2d0SYan, Zheng di->time = jiffies; 12315495c2d0SYan, Zheng di->lease_shared_gen = 0; 12325495c2d0SYan, Zheng di->offset = 0; 12335495c2d0SYan, Zheng 12345495c2d0SYan, Zheng spin_unlock(&realdn->d_lock); 12355495c2d0SYan, Zheng dput(realdn); 12365495c2d0SYan, Zheng } 12375495c2d0SYan, Zheng } 12385495c2d0SYan, Zheng 12391cd3935bSSage Weil /* dn must be unhashed */ 12401cd3935bSSage Weil if (!d_unhashed(dn)) 12411cd3935bSSage Weil d_drop(dn); 124241d28bcaSAl Viro realdn = d_splice_alias(in, dn); 12431cd3935bSSage Weil if (IS_ERR(realdn)) { 1244d69ed05aSSage Weil pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", 1245d69ed05aSSage Weil PTR_ERR(realdn), dn, in, ceph_vinop(in)); 12462bf996acSYan, Zheng return PTR_ERR(realdn); 12472bf996acSYan, Zheng } 12482bf996acSYan, Zheng 12492bf996acSYan, Zheng if (realdn) { 12501cd3935bSSage Weil dout("dn %p (%d) spliced with %p (%d) " 12511cd3935bSSage Weil "inode %p ino %llx.%llx\n", 125284d08fa8SAl Viro dn, d_count(dn), 125384d08fa8SAl Viro realdn, d_count(realdn), 12542b0143b5SDavid Howells d_inode(realdn), ceph_vinop(d_inode(realdn))); 12551cd3935bSSage Weil dput(dn); 12562bf996acSYan, Zheng *pdn = realdn; 12571cd3935bSSage Weil } else { 12581cd3935bSSage Weil BUG_ON(!ceph_dentry(dn)); 12591cd3935bSSage Weil dout("dn %p attached to %p ino %llx.%llx\n", 12602b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn))); 12611cd3935bSSage Weil } 12622bf996acSYan, Zheng return 0; 12631cd3935bSSage Weil } 12641cd3935bSSage Weil 12651cd3935bSSage Weil /* 1266355da1ebSSage Weil * Incorporate results into the local cache. This is either just 1267355da1ebSSage Weil * one inode, or a directory, dentry, and possibly linked-to inode (e.g., 1268355da1ebSSage Weil * after a lookup). 1269355da1ebSSage Weil * 1270355da1ebSSage Weil * A reply may contain 1271355da1ebSSage Weil * a directory inode along with a dentry. 1272355da1ebSSage Weil * and/or a target inode 1273355da1ebSSage Weil * 1274355da1ebSSage Weil * Called with snap_rwsem (read). 1275355da1ebSSage Weil */ 1276f5a03b08SJeff Layton int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req) 1277355da1ebSSage Weil { 1278f5a03b08SJeff Layton struct ceph_mds_session *session = req->r_session; 1279355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1280355da1ebSSage Weil struct inode *in = NULL; 1281f5d55f03SJeff Layton struct ceph_vino tvino, dvino; 12823d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(sb); 1283355da1ebSSage Weil int err = 0; 1284355da1ebSSage Weil 1285355da1ebSSage Weil dout("fill_trace %p is_dentry %d is_target %d\n", req, 1286355da1ebSSage Weil rinfo->head->is_dentry, rinfo->head->is_target); 1287355da1ebSSage Weil 1288355da1ebSSage Weil if (!rinfo->head->is_target && !rinfo->head->is_dentry) { 1289355da1ebSSage Weil dout("fill_trace reply is empty!\n"); 12903dd69aabSJeff Layton if (rinfo->head->result == 0 && req->r_parent) 1291167c9e35SSage Weil ceph_invalidate_dir_request(req); 1292355da1ebSSage Weil return 0; 1293355da1ebSSage Weil } 1294355da1ebSSage Weil 1295355da1ebSSage Weil if (rinfo->head->is_dentry) { 12963dd69aabSJeff Layton struct inode *dir = req->r_parent; 12975b1daecdSSage Weil 12986c5e50faSSage Weil if (dir) { 1299966c7160SJeff Layton err = ceph_fill_inode(dir, NULL, &rinfo->diri, 1300966c7160SJeff Layton rinfo->dirfrag, session, -1, 13015b1daecdSSage Weil &req->r_caps_reservation); 13025b1daecdSSage Weil if (err < 0) 130319913b4eSYan, Zheng goto done; 13046c5e50faSSage Weil } else { 13056c5e50faSSage Weil WARN_ON_ONCE(1); 13066c5e50faSSage Weil } 130719913b4eSYan, Zheng 130874c9e6bfSYan, Zheng if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME && 130974c9e6bfSYan, Zheng test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 131074c9e6bfSYan, Zheng !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { 131119913b4eSYan, Zheng struct qstr dname; 131219913b4eSYan, Zheng struct dentry *dn, *parent; 131319913b4eSYan, Zheng 131419913b4eSYan, Zheng BUG_ON(!rinfo->head->is_target); 131519913b4eSYan, Zheng BUG_ON(req->r_dentry); 131619913b4eSYan, Zheng 131719913b4eSYan, Zheng parent = d_find_any_alias(dir); 131819913b4eSYan, Zheng BUG_ON(!parent); 131919913b4eSYan, Zheng 132019913b4eSYan, Zheng dname.name = rinfo->dname; 132119913b4eSYan, Zheng dname.len = rinfo->dname_len; 13228387ff25SLinus Torvalds dname.hash = full_name_hash(parent, dname.name, dname.len); 1323f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1324f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 132519913b4eSYan, Zheng retry_lookup: 132619913b4eSYan, Zheng dn = d_lookup(parent, &dname); 132719913b4eSYan, Zheng dout("d_lookup on parent=%p name=%.*s got %p\n", 132819913b4eSYan, Zheng parent, dname.len, dname.name, dn); 132919913b4eSYan, Zheng 133019913b4eSYan, Zheng if (!dn) { 133119913b4eSYan, Zheng dn = d_alloc(parent, &dname); 133219913b4eSYan, Zheng dout("d_alloc %p '%.*s' = %p\n", parent, 133319913b4eSYan, Zheng dname.len, dname.name, dn); 1334d37b1d99SMarkus Elfring if (!dn) { 133519913b4eSYan, Zheng dput(parent); 133619913b4eSYan, Zheng err = -ENOMEM; 133719913b4eSYan, Zheng goto done; 133819913b4eSYan, Zheng } 1339ad5cb123SAl Viro err = 0; 13402b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 1341f5d55f03SJeff Layton (ceph_ino(d_inode(dn)) != tvino.ino || 1342f5d55f03SJeff Layton ceph_snap(d_inode(dn)) != tvino.snap)) { 134319913b4eSYan, Zheng dout(" dn %p points to wrong inode %p\n", 13442b0143b5SDavid Howells dn, d_inode(dn)); 1345933ad2c9SYan, Zheng ceph_dir_clear_ordered(dir); 134619913b4eSYan, Zheng d_delete(dn); 134719913b4eSYan, Zheng dput(dn); 134819913b4eSYan, Zheng goto retry_lookup; 134919913b4eSYan, Zheng } 135019913b4eSYan, Zheng 135119913b4eSYan, Zheng req->r_dentry = dn; 135219913b4eSYan, Zheng dput(parent); 135319913b4eSYan, Zheng } 13545b1daecdSSage Weil } 13555b1daecdSSage Weil 135686b58d13SYan, Zheng if (rinfo->head->is_target) { 1357bca9fc14SJeff Layton /* Should be filled in by handle_reply */ 1358bca9fc14SJeff Layton BUG_ON(!req->r_target_inode); 135986b58d13SYan, Zheng 1360bca9fc14SJeff Layton in = req->r_target_inode; 1361966c7160SJeff Layton err = ceph_fill_inode(in, req->r_locked_page, &rinfo->targeti, 1362966c7160SJeff Layton NULL, session, 1363bc2de10dSJeff Layton (!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && 13643bb48b41SJeff Layton !test_bit(CEPH_MDS_R_ASYNC, &req->r_req_flags) && 1365bc2de10dSJeff Layton rinfo->head->result == 0) ? req->r_fmode : -1, 136686b58d13SYan, Zheng &req->r_caps_reservation); 136786b58d13SYan, Zheng if (err < 0) { 1368966c7160SJeff Layton pr_err("ceph_fill_inode badness %p %llx.%llx\n", 136986b58d13SYan, Zheng in, ceph_vinop(in)); 1370bca9fc14SJeff Layton req->r_target_inode = NULL; 1371893e456bSJeff Layton if (in->i_state & I_NEW) 1372893e456bSJeff Layton discard_new_inode(in); 137368cbb805SJeff Layton else 137468cbb805SJeff Layton iput(in); 137586b58d13SYan, Zheng goto done; 137686b58d13SYan, Zheng } 1377893e456bSJeff Layton if (in->i_state & I_NEW) 1378893e456bSJeff Layton unlock_new_inode(in); 137986b58d13SYan, Zheng } 138086b58d13SYan, Zheng 13819358c6d4SSage Weil /* 13829358c6d4SSage Weil * ignore null lease/binding on snapdir ENOENT, or else we 13839358c6d4SSage Weil * will have trouble splicing in the virtual snapdir later 13849358c6d4SSage Weil */ 13853dd69aabSJeff Layton if (rinfo->head->is_dentry && 1386bc2de10dSJeff Layton !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && 13873dd69aabSJeff Layton test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 13889358c6d4SSage Weil (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, 13893d14c5d2SYehuda Sadeh fsc->mount_options->snapdir_name, 13909358c6d4SSage Weil req->r_dentry->d_name.len))) { 1391355da1ebSSage Weil /* 1392355da1ebSSage Weil * lookup link rename : null -> possibly existing inode 1393355da1ebSSage Weil * mknod symlink mkdir : null -> new inode 1394355da1ebSSage Weil * unlink : linked -> null 1395355da1ebSSage Weil */ 13963dd69aabSJeff Layton struct inode *dir = req->r_parent; 1397355da1ebSSage Weil struct dentry *dn = req->r_dentry; 1398355da1ebSSage Weil bool have_dir_cap, have_lease; 1399355da1ebSSage Weil 1400355da1ebSSage Weil BUG_ON(!dn); 1401355da1ebSSage Weil BUG_ON(!dir); 14022b0143b5SDavid Howells BUG_ON(d_inode(dn->d_parent) != dir); 1403f5d55f03SJeff Layton 1404f5d55f03SJeff Layton dvino.ino = le64_to_cpu(rinfo->diri.in->ino); 1405f5d55f03SJeff Layton dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); 1406f5d55f03SJeff Layton 1407f5d55f03SJeff Layton BUG_ON(ceph_ino(dir) != dvino.ino); 1408f5d55f03SJeff Layton BUG_ON(ceph_snap(dir) != dvino.snap); 1409355da1ebSSage Weil 1410355da1ebSSage Weil /* do we have a lease on the whole dir? */ 1411355da1ebSSage Weil have_dir_cap = 1412355da1ebSSage Weil (le32_to_cpu(rinfo->diri.in->cap.caps) & 1413355da1ebSSage Weil CEPH_CAP_FILE_SHARED); 1414355da1ebSSage Weil 1415355da1ebSSage Weil /* do we have a dn lease? */ 1416355da1ebSSage Weil have_lease = have_dir_cap || 14172f90b852SSage Weil le32_to_cpu(rinfo->dlease->duration_ms); 1418355da1ebSSage Weil if (!have_lease) 1419355da1ebSSage Weil dout("fill_trace no dentry lease or dir cap\n"); 1420355da1ebSSage Weil 1421355da1ebSSage Weil /* rename? */ 1422355da1ebSSage Weil if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { 14230a8a70f9SYan, Zheng struct inode *olddir = req->r_old_dentry_dir; 14240a8a70f9SYan, Zheng BUG_ON(!olddir); 14250a8a70f9SYan, Zheng 1426a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1427355da1ebSSage Weil req->r_old_dentry, 1428a455589fSAl Viro req->r_old_dentry, 1429a455589fSAl Viro dn, dn); 1430355da1ebSSage Weil dout("fill_trace doing d_move %p -> %p\n", 1431355da1ebSSage Weil req->r_old_dentry, dn); 1432c10f5e12SSage Weil 1433fdd4e158SYan, Zheng /* d_move screws up sibling dentries' offsets */ 1434fdd4e158SYan, Zheng ceph_dir_clear_ordered(dir); 1435fdd4e158SYan, Zheng ceph_dir_clear_ordered(olddir); 1436fdd4e158SYan, Zheng 1437355da1ebSSage Weil d_move(req->r_old_dentry, dn); 1438a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1439355da1ebSSage Weil req->r_old_dentry, 1440a455589fSAl Viro req->r_old_dentry, 1441a455589fSAl Viro dn, dn); 144281a6cf2dSSage Weil 1443c4a29f26SSage Weil /* ensure target dentry is invalidated, despite 1444c4a29f26SSage Weil rehashing bug in vfs_rename_dir */ 144581a6cf2dSSage Weil ceph_invalidate_dentry_lease(dn); 144681a6cf2dSSage Weil 144709adc80cSSage Weil dout("dn %p gets new offset %lld\n", req->r_old_dentry, 14481cd3935bSSage Weil ceph_dentry(req->r_old_dentry)->offset); 144981a6cf2dSSage Weil 14502bf996acSYan, Zheng /* swap r_dentry and r_old_dentry in case that 14512bf996acSYan, Zheng * splice_dentry() gets called later. This is safe 14522bf996acSYan, Zheng * because no other place will use them */ 14532bf996acSYan, Zheng req->r_dentry = req->r_old_dentry; 14542bf996acSYan, Zheng req->r_old_dentry = dn; 14552bf996acSYan, Zheng dn = req->r_dentry; 1456355da1ebSSage Weil } 1457355da1ebSSage Weil 1458355da1ebSSage Weil /* null dentry? */ 1459355da1ebSSage Weil if (!rinfo->head->is_target) { 1460355da1ebSSage Weil dout("fill_trace null dentry\n"); 14612b0143b5SDavid Howells if (d_really_is_positive(dn)) { 1462355da1ebSSage Weil dout("d_delete %p\n", dn); 14635495c2d0SYan, Zheng ceph_dir_clear_ordered(dir); 1464355da1ebSSage Weil d_delete(dn); 146580d025ffSJeff Layton } else if (have_lease) { 146680d025ffSJeff Layton if (d_unhashed(dn)) 1467f8b31710SAl Viro d_add(dn, NULL); 1468543212b3SYan, Zheng update_dentry_lease(dir, dn, 1469543212b3SYan, Zheng rinfo->dlease, session, 1470543212b3SYan, Zheng req->r_request_started); 1471355da1ebSSage Weil } 1472355da1ebSSage Weil goto done; 1473355da1ebSSage Weil } 1474355da1ebSSage Weil 1475355da1ebSSage Weil /* attach proper inode */ 14762b0143b5SDavid Howells if (d_really_is_negative(dn)) { 147770db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 147886b58d13SYan, Zheng ihold(in); 14792bf996acSYan, Zheng err = splice_dentry(&req->r_dentry, in); 14802bf996acSYan, Zheng if (err < 0) 1481355da1ebSSage Weil goto done; 14822bf996acSYan, Zheng dn = req->r_dentry; /* may have spliced */ 14832b0143b5SDavid Howells } else if (d_really_is_positive(dn) && d_inode(dn) != in) { 1484355da1ebSSage Weil dout(" %p links to %p %llx.%llx, not %llx.%llx\n", 14852b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn)), 148686b58d13SYan, Zheng ceph_vinop(in)); 1487200fd27cSYan, Zheng d_invalidate(dn); 1488355da1ebSSage Weil have_lease = false; 1489355da1ebSSage Weil } 1490355da1ebSSage Weil 1491f5d55f03SJeff Layton if (have_lease) { 1492543212b3SYan, Zheng update_dentry_lease(dir, dn, 1493543212b3SYan, Zheng rinfo->dlease, session, 1494543212b3SYan, Zheng req->r_request_started); 1495f5d55f03SJeff Layton } 1496355da1ebSSage Weil dout(" final dn %p\n", dn); 1497bc2de10dSJeff Layton } else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP || 1498bc2de10dSJeff Layton req->r_op == CEPH_MDS_OP_MKSNAP) && 14991f08529cSAl Viro test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 1500bc2de10dSJeff Layton !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { 15013dd69aabSJeff Layton struct inode *dir = req->r_parent; 1502355da1ebSSage Weil 1503355da1ebSSage Weil /* fill out a snapdir LOOKUPSNAP dentry */ 15040a8a70f9SYan, Zheng BUG_ON(!dir); 15050a8a70f9SYan, Zheng BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); 15062bf996acSYan, Zheng BUG_ON(!req->r_dentry); 15072bf996acSYan, Zheng dout(" linking snapped dir %p to dn %p\n", in, req->r_dentry); 150870db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 150986b58d13SYan, Zheng ihold(in); 15102bf996acSYan, Zheng err = splice_dentry(&req->r_dentry, in); 15112bf996acSYan, Zheng if (err < 0) 1512355da1ebSSage Weil goto done; 1513543212b3SYan, Zheng } else if (rinfo->head->is_dentry && req->r_dentry) { 1514543212b3SYan, Zheng /* parent inode is not locked, be carefull */ 1515cdde7c43SJeff Layton struct ceph_vino *ptvino = NULL; 1516cdde7c43SJeff Layton dvino.ino = le64_to_cpu(rinfo->diri.in->ino); 1517cdde7c43SJeff Layton dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); 1518cdde7c43SJeff Layton if (rinfo->head->is_target) { 1519cdde7c43SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1520cdde7c43SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 1521cdde7c43SJeff Layton ptvino = &tvino; 1522cdde7c43SJeff Layton } 1523543212b3SYan, Zheng update_dentry_lease_careful(req->r_dentry, rinfo->dlease, 1524543212b3SYan, Zheng session, req->r_request_started, 1525543212b3SYan, Zheng rinfo->dname, rinfo->dname_len, 1526543212b3SYan, Zheng &dvino, ptvino); 1527355da1ebSSage Weil } 1528355da1ebSSage Weil done: 1529355da1ebSSage Weil dout("fill_trace done err=%d\n", err); 1530355da1ebSSage Weil return err; 1531355da1ebSSage Weil } 1532355da1ebSSage Weil 1533355da1ebSSage Weil /* 1534355da1ebSSage Weil * Prepopulate our cache with readdir results, leases, etc. 1535355da1ebSSage Weil */ 153679f9f99aSSage Weil static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, 153779f9f99aSSage Weil struct ceph_mds_session *session) 153879f9f99aSSage Weil { 153979f9f99aSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 154079f9f99aSSage Weil int i, err = 0; 154179f9f99aSSage Weil 154279f9f99aSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 15432a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 154479f9f99aSSage Weil struct ceph_vino vino; 154579f9f99aSSage Weil struct inode *in; 154679f9f99aSSage Weil int rc; 154779f9f99aSSage Weil 15482a5beea3SYan, Zheng vino.ino = le64_to_cpu(rde->inode.in->ino); 15492a5beea3SYan, Zheng vino.snap = le64_to_cpu(rde->inode.in->snapid); 155079f9f99aSSage Weil 155179f9f99aSSage Weil in = ceph_get_inode(req->r_dentry->d_sb, vino); 155279f9f99aSSage Weil if (IS_ERR(in)) { 155379f9f99aSSage Weil err = PTR_ERR(in); 155479f9f99aSSage Weil dout("new_inode badness got %d\n", err); 155579f9f99aSSage Weil continue; 155679f9f99aSSage Weil } 1557966c7160SJeff Layton rc = ceph_fill_inode(in, NULL, &rde->inode, NULL, session, 155857c21994SJeff Layton -1, &req->r_caps_reservation); 155979f9f99aSSage Weil if (rc < 0) { 1560966c7160SJeff Layton pr_err("ceph_fill_inode badness on %p got %d\n", 1561966c7160SJeff Layton in, rc); 156279f9f99aSSage Weil err = rc; 1563893e456bSJeff Layton if (in->i_state & I_NEW) { 1564893e456bSJeff Layton ihold(in); 1565893e456bSJeff Layton discard_new_inode(in); 156679f9f99aSSage Weil } 1567893e456bSJeff Layton } else if (in->i_state & I_NEW) { 1568893e456bSJeff Layton unlock_new_inode(in); 1569893e456bSJeff Layton } 1570893e456bSJeff Layton 15713e1d0452SYan, Zheng /* avoid calling iput_final() in mds dispatch threads */ 15723e1d0452SYan, Zheng ceph_async_iput(in); 157379f9f99aSSage Weil } 157479f9f99aSSage Weil 157579f9f99aSSage Weil return err; 157679f9f99aSSage Weil } 157779f9f99aSSage Weil 1578fdd4e158SYan, Zheng void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) 1579fdd4e158SYan, Zheng { 1580fdd4e158SYan, Zheng if (ctl->page) { 1581fdd4e158SYan, Zheng kunmap(ctl->page); 158209cbfeafSKirill A. Shutemov put_page(ctl->page); 1583fdd4e158SYan, Zheng ctl->page = NULL; 1584fdd4e158SYan, Zheng } 1585fdd4e158SYan, Zheng } 1586fdd4e158SYan, Zheng 1587fdd4e158SYan, Zheng static int fill_readdir_cache(struct inode *dir, struct dentry *dn, 1588fdd4e158SYan, Zheng struct ceph_readdir_cache_control *ctl, 1589fdd4e158SYan, Zheng struct ceph_mds_request *req) 1590fdd4e158SYan, Zheng { 1591fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(dir); 159209cbfeafSKirill A. Shutemov unsigned nsize = PAGE_SIZE / sizeof(struct dentry*); 1593fdd4e158SYan, Zheng unsigned idx = ctl->index % nsize; 1594fdd4e158SYan, Zheng pgoff_t pgoff = ctl->index / nsize; 1595fdd4e158SYan, Zheng 1596fdd4e158SYan, Zheng if (!ctl->page || pgoff != page_index(ctl->page)) { 1597fdd4e158SYan, Zheng ceph_readdir_cache_release(ctl); 1598af5e5eb5SYan, Zheng if (idx == 0) 1599fdd4e158SYan, Zheng ctl->page = grab_cache_page(&dir->i_data, pgoff); 1600af5e5eb5SYan, Zheng else 1601af5e5eb5SYan, Zheng ctl->page = find_lock_page(&dir->i_data, pgoff); 1602fdd4e158SYan, Zheng if (!ctl->page) { 1603fdd4e158SYan, Zheng ctl->index = -1; 1604af5e5eb5SYan, Zheng return idx == 0 ? -ENOMEM : 0; 1605fdd4e158SYan, Zheng } 1606fdd4e158SYan, Zheng /* reading/filling the cache are serialized by 1607fdd4e158SYan, Zheng * i_mutex, no need to use page lock */ 1608fdd4e158SYan, Zheng unlock_page(ctl->page); 1609fdd4e158SYan, Zheng ctl->dentries = kmap(ctl->page); 1610af5e5eb5SYan, Zheng if (idx == 0) 161109cbfeafSKirill A. Shutemov memset(ctl->dentries, 0, PAGE_SIZE); 1612fdd4e158SYan, Zheng } 1613fdd4e158SYan, Zheng 1614fdd4e158SYan, Zheng if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && 1615fdd4e158SYan, Zheng req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { 1616fdd4e158SYan, Zheng dout("readdir cache dn %p idx %d\n", dn, ctl->index); 1617fdd4e158SYan, Zheng ctl->dentries[idx] = dn; 1618fdd4e158SYan, Zheng ctl->index++; 1619fdd4e158SYan, Zheng } else { 1620fdd4e158SYan, Zheng dout("disable readdir cache\n"); 1621fdd4e158SYan, Zheng ctl->index = -1; 1622fdd4e158SYan, Zheng } 1623fdd4e158SYan, Zheng return 0; 1624fdd4e158SYan, Zheng } 1625fdd4e158SYan, Zheng 1626355da1ebSSage Weil int ceph_readdir_prepopulate(struct ceph_mds_request *req, 1627355da1ebSSage Weil struct ceph_mds_session *session) 1628355da1ebSSage Weil { 1629355da1ebSSage Weil struct dentry *parent = req->r_dentry; 1630f3c4ebe6SYan, Zheng struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); 1631355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1632355da1ebSSage Weil struct qstr dname; 1633355da1ebSSage Weil struct dentry *dn; 1634355da1ebSSage Weil struct inode *in; 1635315f2408SYan, Zheng int err = 0, skipped = 0, ret, i; 16360f51a983SJeff Layton u32 frag = le32_to_cpu(req->r_args.readdir.frag); 1637f3c4ebe6SYan, Zheng u32 last_hash = 0; 1638f3c4ebe6SYan, Zheng u32 fpos_offset; 1639fdd4e158SYan, Zheng struct ceph_readdir_cache_control cache_ctl = {}; 1640fdd4e158SYan, Zheng 1641bc2de10dSJeff Layton if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) 1642fdd4e158SYan, Zheng return readdir_prepopulate_inodes_only(req, session); 164381c6aea5SYan, Zheng 164479162547SYan, Zheng if (rinfo->hash_order) { 164579162547SYan, Zheng if (req->r_path2) { 1646f3c4ebe6SYan, Zheng last_hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 164779162547SYan, Zheng req->r_path2, 164879162547SYan, Zheng strlen(req->r_path2)); 1649f3c4ebe6SYan, Zheng last_hash = ceph_frag_value(last_hash); 165079162547SYan, Zheng } else if (rinfo->offset_hash) { 165179162547SYan, Zheng /* mds understands offset_hash */ 165279162547SYan, Zheng WARN_ON_ONCE(req->r_readdir_offset != 2); 16530f51a983SJeff Layton last_hash = le32_to_cpu(req->r_args.readdir.offset_hash); 165479162547SYan, Zheng } 1655f3c4ebe6SYan, Zheng } 1656f3c4ebe6SYan, Zheng 165781c6aea5SYan, Zheng if (rinfo->dir_dir && 165881c6aea5SYan, Zheng le32_to_cpu(rinfo->dir_dir->frag) != frag) { 165981c6aea5SYan, Zheng dout("readdir_prepopulate got new frag %x -> %x\n", 166081c6aea5SYan, Zheng frag, le32_to_cpu(rinfo->dir_dir->frag)); 166181c6aea5SYan, Zheng frag = le32_to_cpu(rinfo->dir_dir->frag); 1662f3c4ebe6SYan, Zheng if (!rinfo->hash_order) 1663fdd4e158SYan, Zheng req->r_readdir_offset = 2; 166481c6aea5SYan, Zheng } 1665355da1ebSSage Weil 1666355da1ebSSage Weil if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { 1667355da1ebSSage Weil dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", 1668355da1ebSSage Weil rinfo->dir_nr, parent); 1669355da1ebSSage Weil } else { 1670355da1ebSSage Weil dout("readdir_prepopulate %d items under dn %p\n", 1671355da1ebSSage Weil rinfo->dir_nr, parent); 1672355da1ebSSage Weil if (rinfo->dir_dir) 16732b0143b5SDavid Howells ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); 1674355da1ebSSage Weil 16758d45b911SYan, Zheng if (ceph_frag_is_leftmost(frag) && 16768d45b911SYan, Zheng req->r_readdir_offset == 2 && 167779162547SYan, Zheng !(rinfo->hash_order && last_hash)) { 16788d45b911SYan, Zheng /* note dir version at start of readdir so we can 16798d45b911SYan, Zheng * tell if any dentries get dropped */ 16808d45b911SYan, Zheng req->r_dir_release_cnt = 16818d45b911SYan, Zheng atomic64_read(&ci->i_release_count); 16828d45b911SYan, Zheng req->r_dir_ordered_cnt = 16838d45b911SYan, Zheng atomic64_read(&ci->i_ordered_count); 1684fdd4e158SYan, Zheng req->r_readdir_cache_idx = 0; 1685fdd4e158SYan, Zheng } 16868d45b911SYan, Zheng } 1687fdd4e158SYan, Zheng 1688fdd4e158SYan, Zheng cache_ctl.index = req->r_readdir_cache_idx; 1689f3c4ebe6SYan, Zheng fpos_offset = req->r_readdir_offset; 1690fdd4e158SYan, Zheng 169186b58d13SYan, Zheng /* FIXME: release caps/leases if error occurs */ 1692355da1ebSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 16932a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 1694543212b3SYan, Zheng struct ceph_vino tvino; 1695355da1ebSSage Weil 16962a5beea3SYan, Zheng dname.name = rde->name; 16972a5beea3SYan, Zheng dname.len = rde->name_len; 16988387ff25SLinus Torvalds dname.hash = full_name_hash(parent, dname.name, dname.len); 1699355da1ebSSage Weil 1700f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rde->inode.in->ino); 1701f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rde->inode.in->snapid); 1702355da1ebSSage Weil 1703f3c4ebe6SYan, Zheng if (rinfo->hash_order) { 1704f3c4ebe6SYan, Zheng u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 1705f3c4ebe6SYan, Zheng rde->name, rde->name_len); 1706f3c4ebe6SYan, Zheng hash = ceph_frag_value(hash); 1707f3c4ebe6SYan, Zheng if (hash != last_hash) 1708f3c4ebe6SYan, Zheng fpos_offset = 2; 1709f3c4ebe6SYan, Zheng last_hash = hash; 1710f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(hash, fpos_offset++, true); 1711f3c4ebe6SYan, Zheng } else { 1712f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(frag, fpos_offset++, false); 1713f3c4ebe6SYan, Zheng } 1714355da1ebSSage Weil 1715355da1ebSSage Weil retry_lookup: 1716355da1ebSSage Weil dn = d_lookup(parent, &dname); 1717355da1ebSSage Weil dout("d_lookup on parent=%p name=%.*s got %p\n", 1718355da1ebSSage Weil parent, dname.len, dname.name, dn); 1719355da1ebSSage Weil 1720355da1ebSSage Weil if (!dn) { 1721355da1ebSSage Weil dn = d_alloc(parent, &dname); 1722355da1ebSSage Weil dout("d_alloc %p '%.*s' = %p\n", parent, 1723355da1ebSSage Weil dname.len, dname.name, dn); 1724d37b1d99SMarkus Elfring if (!dn) { 1725355da1ebSSage Weil dout("d_alloc badness\n"); 1726355da1ebSSage Weil err = -ENOMEM; 1727355da1ebSSage Weil goto out; 1728355da1ebSSage Weil } 17292b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 1730f5d55f03SJeff Layton (ceph_ino(d_inode(dn)) != tvino.ino || 1731f5d55f03SJeff Layton ceph_snap(d_inode(dn)) != tvino.snap)) { 17325495c2d0SYan, Zheng struct ceph_dentry_info *di = ceph_dentry(dn); 1733355da1ebSSage Weil dout(" dn %p points to wrong inode %p\n", 17342b0143b5SDavid Howells dn, d_inode(dn)); 17355495c2d0SYan, Zheng 17365495c2d0SYan, Zheng spin_lock(&dn->d_lock); 17375495c2d0SYan, Zheng if (di->offset > 0 && 17385495c2d0SYan, Zheng di->lease_shared_gen == 17395495c2d0SYan, Zheng atomic_read(&ci->i_shared_gen)) { 1740933ad2c9SYan, Zheng __ceph_dir_clear_ordered(ci); 17415495c2d0SYan, Zheng di->offset = 0; 17425495c2d0SYan, Zheng } 17435495c2d0SYan, Zheng spin_unlock(&dn->d_lock); 17445495c2d0SYan, Zheng 1745355da1ebSSage Weil d_delete(dn); 1746355da1ebSSage Weil dput(dn); 1747355da1ebSSage Weil goto retry_lookup; 1748355da1ebSSage Weil } 1749355da1ebSSage Weil 1750355da1ebSSage Weil /* inode */ 17512b0143b5SDavid Howells if (d_really_is_positive(dn)) { 17522b0143b5SDavid Howells in = d_inode(dn); 1753355da1ebSSage Weil } else { 1754f5d55f03SJeff Layton in = ceph_get_inode(parent->d_sb, tvino); 1755ac1f12efSDan Carpenter if (IS_ERR(in)) { 1756355da1ebSSage Weil dout("new_inode badness\n"); 17572744c171SAl Viro d_drop(dn); 1758355da1ebSSage Weil dput(dn); 1759ac1f12efSDan Carpenter err = PTR_ERR(in); 1760355da1ebSSage Weil goto out; 1761355da1ebSSage Weil } 1762355da1ebSSage Weil } 1763355da1ebSSage Weil 1764966c7160SJeff Layton ret = ceph_fill_inode(in, NULL, &rde->inode, NULL, session, 176557c21994SJeff Layton -1, &req->r_caps_reservation); 1766fdd4e158SYan, Zheng if (ret < 0) { 1767966c7160SJeff Layton pr_err("ceph_fill_inode badness on %p\n", in); 17683e1d0452SYan, Zheng if (d_really_is_negative(dn)) { 17693e1d0452SYan, Zheng /* avoid calling iput_final() in mds 17703e1d0452SYan, Zheng * dispatch threads */ 1771893e456bSJeff Layton if (in->i_state & I_NEW) { 1772893e456bSJeff Layton ihold(in); 1773893e456bSJeff Layton discard_new_inode(in); 1774893e456bSJeff Layton } 17753e1d0452SYan, Zheng ceph_async_iput(in); 17763e1d0452SYan, Zheng } 177786b58d13SYan, Zheng d_drop(dn); 1778fdd4e158SYan, Zheng err = ret; 1779d69ed05aSSage Weil goto next_item; 1780355da1ebSSage Weil } 1781893e456bSJeff Layton if (in->i_state & I_NEW) 1782893e456bSJeff Layton unlock_new_inode(in); 178386b58d13SYan, Zheng 17842b0143b5SDavid Howells if (d_really_is_negative(dn)) { 1785315f2408SYan, Zheng if (ceph_security_xattr_deadlock(in)) { 1786315f2408SYan, Zheng dout(" skip splicing dn %p to inode %p" 1787315f2408SYan, Zheng " (security xattr deadlock)\n", dn, in); 17883e1d0452SYan, Zheng ceph_async_iput(in); 1789315f2408SYan, Zheng skipped++; 1790315f2408SYan, Zheng goto next_item; 1791315f2408SYan, Zheng } 1792315f2408SYan, Zheng 17932bf996acSYan, Zheng err = splice_dentry(&dn, in); 17942bf996acSYan, Zheng if (err < 0) 179586b58d13SYan, Zheng goto next_item; 179686b58d13SYan, Zheng } 179786b58d13SYan, Zheng 1798f3c4ebe6SYan, Zheng ceph_dentry(dn)->offset = rde->offset; 179986b58d13SYan, Zheng 1800543212b3SYan, Zheng update_dentry_lease(d_inode(parent), dn, 1801543212b3SYan, Zheng rde->lease, req->r_session, 1802543212b3SYan, Zheng req->r_request_started); 1803fdd4e158SYan, Zheng 1804315f2408SYan, Zheng if (err == 0 && skipped == 0 && cache_ctl.index >= 0) { 1805fdd4e158SYan, Zheng ret = fill_readdir_cache(d_inode(parent), dn, 1806fdd4e158SYan, Zheng &cache_ctl, req); 1807fdd4e158SYan, Zheng if (ret < 0) 1808fdd4e158SYan, Zheng err = ret; 1809fdd4e158SYan, Zheng } 1810d69ed05aSSage Weil next_item: 1811355da1ebSSage Weil dput(dn); 1812355da1ebSSage Weil } 1813355da1ebSSage Weil out: 1814315f2408SYan, Zheng if (err == 0 && skipped == 0) { 1815bc2de10dSJeff Layton set_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags); 1816fdd4e158SYan, Zheng req->r_readdir_cache_idx = cache_ctl.index; 1817fdd4e158SYan, Zheng } 1818fdd4e158SYan, Zheng ceph_readdir_cache_release(&cache_ctl); 1819355da1ebSSage Weil dout("readdir_prepopulate done\n"); 1820355da1ebSSage Weil return err; 1821355da1ebSSage Weil } 1822355da1ebSSage Weil 1823efb0ca76SYan, Zheng bool ceph_inode_set_size(struct inode *inode, loff_t size) 1824355da1ebSSage Weil { 1825355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1826efb0ca76SYan, Zheng bool ret; 1827355da1ebSSage Weil 1828be655596SSage Weil spin_lock(&ci->i_ceph_lock); 18292d6795fbSJeff Layton dout("set_size %p %llu -> %llu\n", inode, i_size_read(inode), size); 183099c88e69SYan, Zheng i_size_write(inode, size); 1831224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 1832355da1ebSSage Weil 1833efb0ca76SYan, Zheng ret = __ceph_should_report_size(ci); 1834355da1ebSSage Weil 1835be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1836355da1ebSSage Weil return ret; 1837355da1ebSSage Weil } 1838355da1ebSSage Weil 1839355da1ebSSage Weil /* 18403e1d0452SYan, Zheng * Put reference to inode, but avoid calling iput_final() in current thread. 18413e1d0452SYan, Zheng * iput_final() may wait for reahahead pages. The wait can cause deadlock in 18423e1d0452SYan, Zheng * some contexts. 18433e1d0452SYan, Zheng */ 18443e1d0452SYan, Zheng void ceph_async_iput(struct inode *inode) 18453e1d0452SYan, Zheng { 18463e1d0452SYan, Zheng if (!inode) 18473e1d0452SYan, Zheng return; 18483e1d0452SYan, Zheng for (;;) { 18493e1d0452SYan, Zheng if (atomic_add_unless(&inode->i_count, -1, 1)) 18503e1d0452SYan, Zheng break; 18513e1d0452SYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 18523e1d0452SYan, Zheng &ceph_inode(inode)->i_work)) 18533e1d0452SYan, Zheng break; 18543e1d0452SYan, Zheng /* queue work failed, i_count must be at least 2 */ 18553e1d0452SYan, Zheng } 18563e1d0452SYan, Zheng } 18573e1d0452SYan, Zheng 185864f28c62SJeff Layton void ceph_queue_inode_work(struct inode *inode, int work_bit) 18593c6f6b79SSage Weil { 186064f28c62SJeff Layton struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 18611cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 186264f28c62SJeff Layton set_bit(work_bit, &ci->i_work_mask); 18631cf89a8dSYan, Zheng 186415a2015fSSage Weil ihold(inode); 186564f28c62SJeff Layton if (queue_work(fsc->inode_wq, &ci->i_work)) { 186664f28c62SJeff Layton dout("queue_inode_work %p, mask=%lx\n", inode, ci->i_work_mask); 18673c6f6b79SSage Weil } else { 186864f28c62SJeff Layton dout("queue_inode_work %p already queued, mask=%lx\n", 18691cf89a8dSYan, Zheng inode, ci->i_work_mask); 18701cf89a8dSYan, Zheng iput(inode); 18711cf89a8dSYan, Zheng } 18721cf89a8dSYan, Zheng } 18731cf89a8dSYan, Zheng 18741cf89a8dSYan, Zheng static void ceph_do_invalidate_pages(struct inode *inode) 18751cf89a8dSYan, Zheng { 18761cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 18776c93df5dSYan, Zheng struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 1878355da1ebSSage Weil u32 orig_gen; 1879355da1ebSSage Weil int check = 0; 1880355da1ebSSage Weil 1881b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 18826c93df5dSYan, Zheng 188350c9132dSJeff Layton if (READ_ONCE(fsc->mount_state) >= CEPH_MOUNT_SHUTDOWN) { 18846c93df5dSYan, Zheng pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n", 18856c93df5dSYan, Zheng inode, ceph_ino(inode)); 18866c93df5dSYan, Zheng mapping_set_error(inode->i_mapping, -EIO); 18876c93df5dSYan, Zheng truncate_pagecache(inode, 0); 18886c93df5dSYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 18896c93df5dSYan, Zheng goto out; 18906c93df5dSYan, Zheng } 18916c93df5dSYan, Zheng 1892be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1893355da1ebSSage Weil dout("invalidate_pages %p gen %d revoking %d\n", inode, 1894355da1ebSSage Weil ci->i_rdcache_gen, ci->i_rdcache_revoking); 1895cd045cb4SSage Weil if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { 18969563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 18979563f88cSYan, Zheng check = 1; 1898be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1899b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1900355da1ebSSage Weil goto out; 1901355da1ebSSage Weil } 1902355da1ebSSage Weil orig_gen = ci->i_rdcache_gen; 1903be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1904355da1ebSSage Weil 190510a7052cSJeff Layton ceph_fscache_invalidate(inode); 19069abd4db7SYan, Zheng if (invalidate_inode_pages2(inode->i_mapping) < 0) { 19079abd4db7SYan, Zheng pr_err("invalidate_pages %p fails\n", inode); 19089abd4db7SYan, Zheng } 1909355da1ebSSage Weil 1910be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1911cd045cb4SSage Weil if (orig_gen == ci->i_rdcache_gen && 1912cd045cb4SSage Weil orig_gen == ci->i_rdcache_revoking) { 1913355da1ebSSage Weil dout("invalidate_pages %p gen %d successful\n", inode, 1914355da1ebSSage Weil ci->i_rdcache_gen); 1915cd045cb4SSage Weil ci->i_rdcache_revoking--; 1916355da1ebSSage Weil check = 1; 1917355da1ebSSage Weil } else { 1918cd045cb4SSage Weil dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", 1919cd045cb4SSage Weil inode, orig_gen, ci->i_rdcache_gen, 1920cd045cb4SSage Weil ci->i_rdcache_revoking); 19219563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 19229563f88cSYan, Zheng check = 1; 1923355da1ebSSage Weil } 1924be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1925b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 19269563f88cSYan, Zheng out: 1927355da1ebSSage Weil if (check) 1928355da1ebSSage Weil ceph_check_caps(ci, 0, NULL); 19293c6f6b79SSage Weil } 19303c6f6b79SSage Weil 19313c6f6b79SSage Weil /* 1932355da1ebSSage Weil * Make sure any pending truncation is applied before doing anything 1933355da1ebSSage Weil * that may depend on it. 1934355da1ebSSage Weil */ 1935b415bf4fSYan, Zheng void __ceph_do_pending_vmtruncate(struct inode *inode) 1936355da1ebSSage Weil { 1937355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1938355da1ebSSage Weil u64 to; 1939a85f50b6SYan, Zheng int wrbuffer_refs, finish = 0; 1940355da1ebSSage Weil 1941b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1942355da1ebSSage Weil retry: 1943be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1944355da1ebSSage Weil if (ci->i_truncate_pending == 0) { 1945355da1ebSSage Weil dout("__do_pending_vmtruncate %p none pending\n", inode); 1946be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1947b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1948355da1ebSSage Weil return; 1949355da1ebSSage Weil } 1950355da1ebSSage Weil 1951355da1ebSSage Weil /* 1952355da1ebSSage Weil * make sure any dirty snapped pages are flushed before we 1953355da1ebSSage Weil * possibly truncate them.. so write AND block! 1954355da1ebSSage Weil */ 1955355da1ebSSage Weil if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { 1956c8fd0d37SYan, Zheng spin_unlock(&ci->i_ceph_lock); 1957355da1ebSSage Weil dout("__do_pending_vmtruncate %p flushing snaps first\n", 1958355da1ebSSage Weil inode); 1959355da1ebSSage Weil filemap_write_and_wait_range(&inode->i_data, 0, 1960355da1ebSSage Weil inode->i_sb->s_maxbytes); 1961355da1ebSSage Weil goto retry; 1962355da1ebSSage Weil } 1963355da1ebSSage Weil 1964b0d7c223SYan, Zheng /* there should be no reader or writer */ 1965b0d7c223SYan, Zheng WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); 1966b0d7c223SYan, Zheng 1967355da1ebSSage Weil to = ci->i_truncate_size; 1968355da1ebSSage Weil wrbuffer_refs = ci->i_wrbuffer_ref; 1969355da1ebSSage Weil dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, 1970355da1ebSSage Weil ci->i_truncate_pending, to); 1971be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1972355da1ebSSage Weil 19734e217b5dSYan, Zheng truncate_pagecache(inode, to); 1974355da1ebSSage Weil 1975be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1976a85f50b6SYan, Zheng if (to == ci->i_truncate_size) { 1977a85f50b6SYan, Zheng ci->i_truncate_pending = 0; 1978a85f50b6SYan, Zheng finish = 1; 1979a85f50b6SYan, Zheng } 1980be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1981a85f50b6SYan, Zheng if (!finish) 1982a85f50b6SYan, Zheng goto retry; 1983355da1ebSSage Weil 1984b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1985b0d7c223SYan, Zheng 1986355da1ebSSage Weil if (wrbuffer_refs == 0) 1987bf73c62eSYan, Zheng ceph_check_caps(ci, 0, NULL); 1988a85f50b6SYan, Zheng 198903066f23SYehuda Sadeh wake_up_all(&ci->i_cap_wq); 1990355da1ebSSage Weil } 1991355da1ebSSage Weil 19921cf89a8dSYan, Zheng static void ceph_inode_work(struct work_struct *work) 19931cf89a8dSYan, Zheng { 19941cf89a8dSYan, Zheng struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 19951cf89a8dSYan, Zheng i_work); 19961cf89a8dSYan, Zheng struct inode *inode = &ci->vfs_inode; 19971cf89a8dSYan, Zheng 19981cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_WRITEBACK, &ci->i_work_mask)) { 19991cf89a8dSYan, Zheng dout("writeback %p\n", inode); 20001cf89a8dSYan, Zheng filemap_fdatawrite(&inode->i_data); 20011cf89a8dSYan, Zheng } 20021cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_INVALIDATE_PAGES, &ci->i_work_mask)) 20031cf89a8dSYan, Zheng ceph_do_invalidate_pages(inode); 20041cf89a8dSYan, Zheng 20051cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_VMTRUNCATE, &ci->i_work_mask)) 20061cf89a8dSYan, Zheng __ceph_do_pending_vmtruncate(inode); 20071cf89a8dSYan, Zheng 2008a8810cdcSJeff Layton if (test_and_clear_bit(CEPH_I_WORK_CHECK_CAPS, &ci->i_work_mask)) 2009a8810cdcSJeff Layton ceph_check_caps(ci, 0, NULL); 2010a8810cdcSJeff Layton 2011a8810cdcSJeff Layton if (test_and_clear_bit(CEPH_I_WORK_FLUSH_SNAPS, &ci->i_work_mask)) 2012a8810cdcSJeff Layton ceph_flush_snaps(ci, NULL); 2013a8810cdcSJeff Layton 20141cf89a8dSYan, Zheng iput(inode); 20151cf89a8dSYan, Zheng } 20161cf89a8dSYan, Zheng 2017355da1ebSSage Weil /* 2018355da1ebSSage Weil * symlinks 2019355da1ebSSage Weil */ 2020355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops = { 20216b255391SAl Viro .get_link = simple_get_link, 20220b932672SYan, Zheng .setattr = ceph_setattr, 20230b932672SYan, Zheng .getattr = ceph_getattr, 20240b932672SYan, Zheng .listxattr = ceph_listxattr, 2025355da1ebSSage Weil }; 2026355da1ebSSage Weil 2027a26feccaSAndreas Gruenbacher int __ceph_setattr(struct inode *inode, struct iattr *attr) 2028355da1ebSSage Weil { 2029355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 2030c62498d7SJeff Layton unsigned int ia_valid = attr->ia_valid; 2031355da1ebSSage Weil struct ceph_mds_request *req; 2032a26feccaSAndreas Gruenbacher struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; 2033f66fd9f0SYan, Zheng struct ceph_cap_flush *prealloc_cf; 2034355da1ebSSage Weil int issued; 2035355da1ebSSage Weil int release = 0, dirtied = 0; 2036355da1ebSSage Weil int mask = 0; 2037355da1ebSSage Weil int err = 0; 2038fca65b4aSSage Weil int inode_dirty_flags = 0; 2039604d1b02SYan, Zheng bool lock_snap_rwsem = false; 2040355da1ebSSage Weil 2041f66fd9f0SYan, Zheng prealloc_cf = ceph_alloc_cap_flush(); 2042f66fd9f0SYan, Zheng if (!prealloc_cf) 2043f66fd9f0SYan, Zheng return -ENOMEM; 2044f66fd9f0SYan, Zheng 2045355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, 2046355da1ebSSage Weil USE_AUTH_MDS); 2047f66fd9f0SYan, Zheng if (IS_ERR(req)) { 2048f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 2049355da1ebSSage Weil return PTR_ERR(req); 2050f66fd9f0SYan, Zheng } 2051355da1ebSSage Weil 2052be655596SSage Weil spin_lock(&ci->i_ceph_lock); 2053355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 2054604d1b02SYan, Zheng 2055604d1b02SYan, Zheng if (!ci->i_head_snapc && 2056604d1b02SYan, Zheng (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { 2057604d1b02SYan, Zheng lock_snap_rwsem = true; 2058604d1b02SYan, Zheng if (!down_read_trylock(&mdsc->snap_rwsem)) { 2059604d1b02SYan, Zheng spin_unlock(&ci->i_ceph_lock); 2060604d1b02SYan, Zheng down_read(&mdsc->snap_rwsem); 2061604d1b02SYan, Zheng spin_lock(&ci->i_ceph_lock); 2062604d1b02SYan, Zheng issued = __ceph_caps_issued(ci, NULL); 2063604d1b02SYan, Zheng } 2064604d1b02SYan, Zheng } 2065604d1b02SYan, Zheng 2066355da1ebSSage Weil dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); 2067355da1ebSSage Weil 2068355da1ebSSage Weil if (ia_valid & ATTR_UID) { 2069355da1ebSSage Weil dout("setattr %p uid %d -> %d\n", inode, 2070bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 2071bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 2072355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2073355da1ebSSage Weil inode->i_uid = attr->ia_uid; 2074355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2075355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2076ab871b90SEric W. Biederman !uid_eq(attr->ia_uid, inode->i_uid)) { 2077ab871b90SEric W. Biederman req->r_args.setattr.uid = cpu_to_le32( 2078ab871b90SEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 2079355da1ebSSage Weil mask |= CEPH_SETATTR_UID; 2080355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2081355da1ebSSage Weil } 2082355da1ebSSage Weil } 2083355da1ebSSage Weil if (ia_valid & ATTR_GID) { 2084355da1ebSSage Weil dout("setattr %p gid %d -> %d\n", inode, 2085bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid), 2086bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 2087355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2088355da1ebSSage Weil inode->i_gid = attr->ia_gid; 2089355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2090355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2091ab871b90SEric W. Biederman !gid_eq(attr->ia_gid, inode->i_gid)) { 2092ab871b90SEric W. Biederman req->r_args.setattr.gid = cpu_to_le32( 2093ab871b90SEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 2094355da1ebSSage Weil mask |= CEPH_SETATTR_GID; 2095355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2096355da1ebSSage Weil } 2097355da1ebSSage Weil } 2098355da1ebSSage Weil if (ia_valid & ATTR_MODE) { 2099355da1ebSSage Weil dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, 2100355da1ebSSage Weil attr->ia_mode); 2101355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2102355da1ebSSage Weil inode->i_mode = attr->ia_mode; 2103355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2104355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2105355da1ebSSage Weil attr->ia_mode != inode->i_mode) { 21067221fe4cSGuangliang Zhao inode->i_mode = attr->ia_mode; 2107355da1ebSSage Weil req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); 2108355da1ebSSage Weil mask |= CEPH_SETATTR_MODE; 2109355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2110355da1ebSSage Weil } 2111355da1ebSSage Weil } 2112355da1ebSSage Weil 2113355da1ebSSage Weil if (ia_valid & ATTR_ATIME) { 211413442b03SDeepa Dinamani dout("setattr %p atime %lld.%ld -> %lld.%ld\n", inode, 21159bbeab41SArnd Bergmann inode->i_atime.tv_sec, inode->i_atime.tv_nsec, 21169bbeab41SArnd Bergmann attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); 2117355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2118355da1ebSSage Weil ci->i_time_warp_seq++; 2119355da1ebSSage Weil inode->i_atime = attr->ia_atime; 2120355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2121355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 212295582b00SDeepa Dinamani timespec64_compare(&inode->i_atime, 2123355da1ebSSage Weil &attr->ia_atime) < 0) { 2124355da1ebSSage Weil inode->i_atime = attr->ia_atime; 2125355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2126355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 212795582b00SDeepa Dinamani !timespec64_equal(&inode->i_atime, &attr->ia_atime)) { 21289bbeab41SArnd Bergmann ceph_encode_timespec64(&req->r_args.setattr.atime, 21299bbeab41SArnd Bergmann &attr->ia_atime); 2130355da1ebSSage Weil mask |= CEPH_SETATTR_ATIME; 2131be70489eSYan, Zheng release |= CEPH_CAP_FILE_SHARED | 2132be70489eSYan, Zheng CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2133355da1ebSSage Weil } 2134355da1ebSSage Weil } 2135c62498d7SJeff Layton if (ia_valid & ATTR_SIZE) { 21362d6795fbSJeff Layton loff_t isize = i_size_read(inode); 21372d6795fbSJeff Layton 21382d6795fbSJeff Layton dout("setattr %p size %lld -> %lld\n", inode, isize, attr->ia_size); 21392d6795fbSJeff Layton if ((issued & CEPH_CAP_FILE_EXCL) && attr->ia_size > isize) { 2140c62498d7SJeff Layton i_size_write(inode, attr->ia_size); 2141c62498d7SJeff Layton inode->i_blocks = calc_inode_blocks(attr->ia_size); 2142c62498d7SJeff Layton ci->i_reported_size = attr->ia_size; 2143c62498d7SJeff Layton dirtied |= CEPH_CAP_FILE_EXCL; 2144c62498d7SJeff Layton ia_valid |= ATTR_MTIME; 2145c62498d7SJeff Layton } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 21462d6795fbSJeff Layton attr->ia_size != isize) { 2147c62498d7SJeff Layton req->r_args.setattr.size = cpu_to_le64(attr->ia_size); 21482d6795fbSJeff Layton req->r_args.setattr.old_size = cpu_to_le64(isize); 2149c62498d7SJeff Layton mask |= CEPH_SETATTR_SIZE; 2150c62498d7SJeff Layton release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL | 2151c62498d7SJeff Layton CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2152c62498d7SJeff Layton } 2153c62498d7SJeff Layton } 2154355da1ebSSage Weil if (ia_valid & ATTR_MTIME) { 215513442b03SDeepa Dinamani dout("setattr %p mtime %lld.%ld -> %lld.%ld\n", inode, 21569bbeab41SArnd Bergmann inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 21579bbeab41SArnd Bergmann attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); 2158355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2159355da1ebSSage Weil ci->i_time_warp_seq++; 2160355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2161355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2162355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 216395582b00SDeepa Dinamani timespec64_compare(&inode->i_mtime, 2164355da1ebSSage Weil &attr->ia_mtime) < 0) { 2165355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2166355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2167355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 216895582b00SDeepa Dinamani !timespec64_equal(&inode->i_mtime, &attr->ia_mtime)) { 21699bbeab41SArnd Bergmann ceph_encode_timespec64(&req->r_args.setattr.mtime, 21709bbeab41SArnd Bergmann &attr->ia_mtime); 2171355da1ebSSage Weil mask |= CEPH_SETATTR_MTIME; 2172be70489eSYan, Zheng release |= CEPH_CAP_FILE_SHARED | 2173be70489eSYan, Zheng CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2174355da1ebSSage Weil } 2175355da1ebSSage Weil } 2176355da1ebSSage Weil 2177355da1ebSSage Weil /* these do nothing */ 2178355da1ebSSage Weil if (ia_valid & ATTR_CTIME) { 2179355da1ebSSage Weil bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| 2180355da1ebSSage Weil ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; 218113442b03SDeepa Dinamani dout("setattr %p ctime %lld.%ld -> %lld.%ld (%s)\n", inode, 21829bbeab41SArnd Bergmann inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 21839bbeab41SArnd Bergmann attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, 2184355da1ebSSage Weil only ? "ctime only" : "ignored"); 2185355da1ebSSage Weil if (only) { 2186355da1ebSSage Weil /* 2187355da1ebSSage Weil * if kernel wants to dirty ctime but nothing else, 2188355da1ebSSage Weil * we need to choose a cap to dirty under, or do 2189355da1ebSSage Weil * a almost-no-op setattr 2190355da1ebSSage Weil */ 2191355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) 2192355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2193355da1ebSSage Weil else if (issued & CEPH_CAP_FILE_EXCL) 2194355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2195355da1ebSSage Weil else if (issued & CEPH_CAP_XATTR_EXCL) 2196355da1ebSSage Weil dirtied |= CEPH_CAP_XATTR_EXCL; 2197355da1ebSSage Weil else 2198355da1ebSSage Weil mask |= CEPH_SETATTR_CTIME; 2199355da1ebSSage Weil } 2200355da1ebSSage Weil } 2201355da1ebSSage Weil if (ia_valid & ATTR_FILE) 2202355da1ebSSage Weil dout("setattr %p ATTR_FILE ... hrm!\n", inode); 2203355da1ebSSage Weil 2204355da1ebSSage Weil if (dirtied) { 2205f66fd9f0SYan, Zheng inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, 2206f66fd9f0SYan, Zheng &prealloc_cf); 22074ca2fea6SYan, Zheng inode->i_ctime = attr->ia_ctime; 2208355da1ebSSage Weil } 2209355da1ebSSage Weil 2210355da1ebSSage Weil release &= issued; 2211be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 2212604d1b02SYan, Zheng if (lock_snap_rwsem) 2213604d1b02SYan, Zheng up_read(&mdsc->snap_rwsem); 2214355da1ebSSage Weil 2215fca65b4aSSage Weil if (inode_dirty_flags) 2216fca65b4aSSage Weil __mark_inode_dirty(inode, inode_dirty_flags); 2217fca65b4aSSage Weil 22187221fe4cSGuangliang Zhao 2219355da1ebSSage Weil if (mask) { 222070b666c3SSage Weil req->r_inode = inode; 222170b666c3SSage Weil ihold(inode); 2222355da1ebSSage Weil req->r_inode_drop = release; 2223355da1ebSSage Weil req->r_args.setattr.mask = cpu_to_le32(mask); 2224355da1ebSSage Weil req->r_num_caps = 1; 22250ed1e90aSArnd Bergmann req->r_stamp = attr->ia_ctime; 2226752c8bdcSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 2227355da1ebSSage Weil } 2228355da1ebSSage Weil dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, 2229355da1ebSSage Weil ceph_cap_string(dirtied), mask); 2230355da1ebSSage Weil 2231355da1ebSSage Weil ceph_mdsc_put_request(req); 22328179a101SYan, Zheng ceph_free_cap_flush(prealloc_cf); 22338179a101SYan, Zheng 22348179a101SYan, Zheng if (err >= 0 && (mask & CEPH_SETATTR_SIZE)) 2235b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 22368179a101SYan, Zheng 2237355da1ebSSage Weil return err; 2238355da1ebSSage Weil } 2239355da1ebSSage Weil 2240355da1ebSSage Weil /* 2241a26feccaSAndreas Gruenbacher * setattr 2242a26feccaSAndreas Gruenbacher */ 2243549c7297SChristian Brauner int ceph_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, 2244549c7297SChristian Brauner struct iattr *attr) 2245a26feccaSAndreas Gruenbacher { 2246fd5472edSJan Kara struct inode *inode = d_inode(dentry); 224736a4c72dSChengguang Xu struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 2248fd5472edSJan Kara int err; 2249fd5472edSJan Kara 2250fd5472edSJan Kara if (ceph_snap(inode) != CEPH_NOSNAP) 2251fd5472edSJan Kara return -EROFS; 2252fd5472edSJan Kara 22532f221d6fSChristian Brauner err = setattr_prepare(&init_user_ns, dentry, attr); 2254fd5472edSJan Kara if (err != 0) 2255fd5472edSJan Kara return err; 2256fd5472edSJan Kara 22572b83845fSLuis Henriques if ((attr->ia_valid & ATTR_SIZE) && 22582d6795fbSJeff Layton attr->ia_size > max(i_size_read(inode), fsc->max_file_size)) 225936a4c72dSChengguang Xu return -EFBIG; 226036a4c72dSChengguang Xu 226136a4c72dSChengguang Xu if ((attr->ia_valid & ATTR_SIZE) && 22622b83845fSLuis Henriques ceph_quota_is_max_bytes_exceeded(inode, attr->ia_size)) 22632b83845fSLuis Henriques return -EDQUOT; 22642b83845fSLuis Henriques 22658179a101SYan, Zheng err = __ceph_setattr(inode, attr); 22668179a101SYan, Zheng 22678179a101SYan, Zheng if (err >= 0 && (attr->ia_valid & ATTR_MODE)) 2268e65ce2a5SChristian Brauner err = posix_acl_chmod(&init_user_ns, inode, attr->ia_mode); 22698179a101SYan, Zheng 22708179a101SYan, Zheng return err; 2271a26feccaSAndreas Gruenbacher } 2272a26feccaSAndreas Gruenbacher 2273a26feccaSAndreas Gruenbacher /* 2274355da1ebSSage Weil * Verify that we have a lease on the given mask. If not, 2275355da1ebSSage Weil * do a getattr against an mds. 2276355da1ebSSage Weil */ 227701deead0SYan, Zheng int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 227801deead0SYan, Zheng int mask, bool force) 2279355da1ebSSage Weil { 22803d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 22813d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 2282355da1ebSSage Weil struct ceph_mds_request *req; 228349a9f4f6SYan, Zheng int mode; 2284355da1ebSSage Weil int err; 2285355da1ebSSage Weil 2286355da1ebSSage Weil if (ceph_snap(inode) == CEPH_SNAPDIR) { 2287355da1ebSSage Weil dout("do_getattr inode %p SNAPDIR\n", inode); 2288355da1ebSSage Weil return 0; 2289355da1ebSSage Weil } 2290355da1ebSSage Weil 229101deead0SYan, Zheng dout("do_getattr inode %p mask %s mode 0%o\n", 229201deead0SYan, Zheng inode, ceph_cap_string(mask), inode->i_mode); 22931af16d54SXiubo Li if (!force && ceph_caps_issued_mask_metric(ceph_inode(inode), mask, 1)) 2294355da1ebSSage Weil return 0; 2295355da1ebSSage Weil 229649a9f4f6SYan, Zheng mode = (mask & CEPH_STAT_RSTAT) ? USE_AUTH_MDS : USE_ANY_MDS; 229749a9f4f6SYan, Zheng req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, mode); 2298355da1ebSSage Weil if (IS_ERR(req)) 2299355da1ebSSage Weil return PTR_ERR(req); 230070b666c3SSage Weil req->r_inode = inode; 230170b666c3SSage Weil ihold(inode); 2302355da1ebSSage Weil req->r_num_caps = 1; 2303355da1ebSSage Weil req->r_args.getattr.mask = cpu_to_le32(mask); 230401deead0SYan, Zheng req->r_locked_page = locked_page; 2305355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 230601deead0SYan, Zheng if (locked_page && err == 0) { 230701deead0SYan, Zheng u64 inline_version = req->r_reply_info.targeti.inline_version; 230801deead0SYan, Zheng if (inline_version == 0) { 230901deead0SYan, Zheng /* the reply is supposed to contain inline data */ 231001deead0SYan, Zheng err = -EINVAL; 231101deead0SYan, Zheng } else if (inline_version == CEPH_INLINE_NONE) { 231201deead0SYan, Zheng err = -ENODATA; 231301deead0SYan, Zheng } else { 231401deead0SYan, Zheng err = req->r_reply_info.targeti.inline_len; 231501deead0SYan, Zheng } 231601deead0SYan, Zheng } 2317355da1ebSSage Weil ceph_mdsc_put_request(req); 2318355da1ebSSage Weil dout("do_getattr result=%d\n", err); 2319355da1ebSSage Weil return err; 2320355da1ebSSage Weil } 2321355da1ebSSage Weil 2322355da1ebSSage Weil 2323355da1ebSSage Weil /* 2324355da1ebSSage Weil * Check inode permissions. We verify we have a valid value for 2325355da1ebSSage Weil * the AUTH cap, then call the generic handler. 2326355da1ebSSage Weil */ 2327549c7297SChristian Brauner int ceph_permission(struct user_namespace *mnt_userns, struct inode *inode, 2328549c7297SChristian Brauner int mask) 2329355da1ebSSage Weil { 2330b74c79e9SNick Piggin int err; 2331b74c79e9SNick Piggin 233210556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 2333b74c79e9SNick Piggin return -ECHILD; 2334b74c79e9SNick Piggin 2335508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); 2336355da1ebSSage Weil 2337355da1ebSSage Weil if (!err) 233847291baaSChristian Brauner err = generic_permission(&init_user_ns, inode, mask); 2339355da1ebSSage Weil return err; 2340355da1ebSSage Weil } 2341355da1ebSSage Weil 2342428bb68aSJeff Layton /* Craft a mask of needed caps given a set of requested statx attrs. */ 234304fabb11SJeff Layton static int statx_to_caps(u32 want, umode_t mode) 2344428bb68aSJeff Layton { 2345428bb68aSJeff Layton int mask = 0; 2346428bb68aSJeff Layton 234758981784SJeff Layton if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME)) 2348428bb68aSJeff Layton mask |= CEPH_CAP_AUTH_SHARED; 2349428bb68aSJeff Layton 235004fabb11SJeff Layton if (want & (STATX_NLINK|STATX_CTIME)) { 235104fabb11SJeff Layton /* 235204fabb11SJeff Layton * The link count for directories depends on inode->i_subdirs, 235304fabb11SJeff Layton * and that is only updated when Fs caps are held. 235404fabb11SJeff Layton */ 235504fabb11SJeff Layton if (S_ISDIR(mode)) 235604fabb11SJeff Layton mask |= CEPH_CAP_FILE_SHARED; 235704fabb11SJeff Layton else 2358428bb68aSJeff Layton mask |= CEPH_CAP_LINK_SHARED; 235904fabb11SJeff Layton } 2360428bb68aSJeff Layton 2361428bb68aSJeff Layton if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE| 2362428bb68aSJeff Layton STATX_BLOCKS)) 2363428bb68aSJeff Layton mask |= CEPH_CAP_FILE_SHARED; 2364428bb68aSJeff Layton 2365428bb68aSJeff Layton if (want & (STATX_CTIME)) 2366428bb68aSJeff Layton mask |= CEPH_CAP_XATTR_SHARED; 2367428bb68aSJeff Layton 2368428bb68aSJeff Layton return mask; 2369428bb68aSJeff Layton } 2370428bb68aSJeff Layton 2371355da1ebSSage Weil /* 2372428bb68aSJeff Layton * Get all the attributes. If we have sufficient caps for the requested attrs, 2373428bb68aSJeff Layton * then we can avoid talking to the MDS at all. 2374355da1ebSSage Weil */ 2375549c7297SChristian Brauner int ceph_getattr(struct user_namespace *mnt_userns, const struct path *path, 2376549c7297SChristian Brauner struct kstat *stat, u32 request_mask, unsigned int flags) 2377355da1ebSSage Weil { 2378a528d35eSDavid Howells struct inode *inode = d_inode(path->dentry); 2379232d4b01SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 238058981784SJeff Layton u32 valid_mask = STATX_BASIC_STATS; 2381428bb68aSJeff Layton int err = 0; 2382355da1ebSSage Weil 2383428bb68aSJeff Layton /* Skip the getattr altogether if we're asked not to sync */ 2384428bb68aSJeff Layton if (!(flags & AT_STATX_DONT_SYNC)) { 238504fabb11SJeff Layton err = ceph_do_getattr(inode, 238604fabb11SJeff Layton statx_to_caps(request_mask, inode->i_mode), 2387428bb68aSJeff Layton flags & AT_STATX_FORCE_SYNC); 2388428bb68aSJeff Layton if (err) 2389428bb68aSJeff Layton return err; 2390428bb68aSJeff Layton } 2391428bb68aSJeff Layton 23920d56a451SChristian Brauner generic_fillattr(&init_user_ns, inode, stat); 2393ebce3eb2SJeff Layton stat->ino = ceph_present_inode(inode); 239458981784SJeff Layton 239558981784SJeff Layton /* 239658981784SJeff Layton * btime on newly-allocated inodes is 0, so if this is still set to 239758981784SJeff Layton * that, then assume that it's not valid. 239858981784SJeff Layton */ 239958981784SJeff Layton if (ci->i_btime.tv_sec || ci->i_btime.tv_nsec) { 240058981784SJeff Layton stat->btime = ci->i_btime; 240158981784SJeff Layton valid_mask |= STATX_BTIME; 240258981784SJeff Layton } 240358981784SJeff Layton 240475c9627eSYan, Zheng if (ceph_snap(inode) == CEPH_NOSNAP) 240575c9627eSYan, Zheng stat->dev = inode->i_sb->s_dev; 2406355da1ebSSage Weil else 240775c9627eSYan, Zheng stat->dev = ci->i_snapid_map ? ci->i_snapid_map->dev : 0; 240875c9627eSYan, Zheng 2409232d4b01SSage Weil if (S_ISDIR(inode->i_mode)) { 24101c1266bbSYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), 24111c1266bbSYehuda Sadeh RBYTES)) 2412232d4b01SSage Weil stat->size = ci->i_rbytes; 24131c1266bbSYehuda Sadeh else 24141c1266bbSYehuda Sadeh stat->size = ci->i_files + ci->i_subdirs; 2415232d4b01SSage Weil stat->blocks = 0; 2416355da1ebSSage Weil stat->blksize = 65536; 24178c6286f1SLuis Henriques /* 24188c6286f1SLuis Henriques * Some applications rely on the number of st_nlink 24198c6286f1SLuis Henriques * value on directories to be either 0 (if unlinked) 24208c6286f1SLuis Henriques * or 2 + number of subdirectories. 24218c6286f1SLuis Henriques */ 24228c6286f1SLuis Henriques if (stat->nlink == 1) 24238c6286f1SLuis Henriques /* '.' + '..' + subdirs */ 24248c6286f1SLuis Henriques stat->nlink = 1 + 1 + ci->i_subdirs; 2425355da1ebSSage Weil } 2426428bb68aSJeff Layton 242758981784SJeff Layton stat->result_mask = request_mask & valid_mask; 2428355da1ebSSage Weil return err; 2429355da1ebSSage Weil } 2430