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 59ebce3eb2SJeff Layton inode = iget5_locked(sb, (unsigned long)vino.ino, ceph_ino_compare, 60ebce3eb2SJeff Layton ceph_set_ino_cb, &vino); 61d37b1d99SMarkus Elfring if (!inode) 62355da1ebSSage Weil return ERR_PTR(-ENOMEM); 63355da1ebSSage Weil 64ebce3eb2SJeff Layton dout("get_inode on %llu=%llx.%llx got %p new %d\n", ceph_present_inode(inode), 65ebce3eb2SJeff Layton ceph_vinop(inode), inode, !!(inode->i_state & I_NEW)); 66355da1ebSSage Weil return inode; 67355da1ebSSage Weil } 68355da1ebSSage Weil 69355da1ebSSage Weil /* 70355da1ebSSage Weil * get/constuct snapdir inode for a given directory 71355da1ebSSage Weil */ 72355da1ebSSage Weil struct inode *ceph_get_snapdir(struct inode *parent) 73355da1ebSSage Weil { 74355da1ebSSage Weil struct ceph_vino vino = { 75355da1ebSSage Weil .ino = ceph_ino(parent), 76355da1ebSSage Weil .snap = CEPH_SNAPDIR, 77355da1ebSSage Weil }; 78355da1ebSSage Weil struct inode *inode = ceph_get_inode(parent->i_sb, vino); 79b377ff13SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 80355da1ebSSage Weil 81355da1ebSSage Weil BUG_ON(!S_ISDIR(parent->i_mode)); 82355da1ebSSage Weil if (IS_ERR(inode)) 837e34bc52SJulia Lawall return inode; 84355da1ebSSage Weil inode->i_mode = parent->i_mode; 85355da1ebSSage Weil inode->i_uid = parent->i_uid; 86355da1ebSSage Weil inode->i_gid = parent->i_gid; 87ef915725SLuis Henriques inode->i_mtime = parent->i_mtime; 88ef915725SLuis Henriques inode->i_ctime = parent->i_ctime; 89ef915725SLuis Henriques inode->i_atime = parent->i_atime; 90b377ff13SSage Weil ci->i_rbytes = 0; 91ef915725SLuis Henriques ci->i_btime = ceph_inode(parent)->i_btime; 92893e456bSJeff Layton 93*d3c51ae1SJeff Layton if (inode->i_state & I_NEW) { 94*d3c51ae1SJeff Layton inode->i_op = &ceph_snapdir_iops; 95*d3c51ae1SJeff Layton inode->i_fop = &ceph_snapdir_fops; 96*d3c51ae1SJeff Layton ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ 97893e456bSJeff Layton unlock_new_inode(inode); 98*d3c51ae1SJeff Layton } 99893e456bSJeff Layton 100355da1ebSSage Weil return inode; 101355da1ebSSage Weil } 102355da1ebSSage Weil 103355da1ebSSage Weil const struct inode_operations ceph_file_iops = { 104355da1ebSSage Weil .permission = ceph_permission, 105355da1ebSSage Weil .setattr = ceph_setattr, 106355da1ebSSage Weil .getattr = ceph_getattr, 107355da1ebSSage Weil .listxattr = ceph_listxattr, 1087221fe4cSGuangliang Zhao .get_acl = ceph_get_acl, 10972466d0bSSage Weil .set_acl = ceph_set_acl, 110355da1ebSSage Weil }; 111355da1ebSSage Weil 112355da1ebSSage Weil 113355da1ebSSage Weil /* 114355da1ebSSage Weil * We use a 'frag tree' to keep track of the MDS's directory fragments 115355da1ebSSage Weil * for a given inode (usually there is just a single fragment). We 116355da1ebSSage Weil * need to know when a child frag is delegated to a new MDS, or when 117355da1ebSSage Weil * it is flagged as replicated, so we can direct our requests 118355da1ebSSage Weil * accordingly. 119355da1ebSSage Weil */ 120355da1ebSSage Weil 121355da1ebSSage Weil /* 122355da1ebSSage Weil * find/create a frag in the tree 123355da1ebSSage Weil */ 124355da1ebSSage Weil static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, 125355da1ebSSage Weil u32 f) 126355da1ebSSage Weil { 127355da1ebSSage Weil struct rb_node **p; 128355da1ebSSage Weil struct rb_node *parent = NULL; 129355da1ebSSage Weil struct ceph_inode_frag *frag; 130355da1ebSSage Weil int c; 131355da1ebSSage Weil 132355da1ebSSage Weil p = &ci->i_fragtree.rb_node; 133355da1ebSSage Weil while (*p) { 134355da1ebSSage Weil parent = *p; 135355da1ebSSage Weil frag = rb_entry(parent, struct ceph_inode_frag, node); 136355da1ebSSage Weil c = ceph_frag_compare(f, frag->frag); 137355da1ebSSage Weil if (c < 0) 138355da1ebSSage Weil p = &(*p)->rb_left; 139355da1ebSSage Weil else if (c > 0) 140355da1ebSSage Weil p = &(*p)->rb_right; 141355da1ebSSage Weil else 142355da1ebSSage Weil return frag; 143355da1ebSSage Weil } 144355da1ebSSage Weil 145355da1ebSSage Weil frag = kmalloc(sizeof(*frag), GFP_NOFS); 14651308806SMarkus Elfring if (!frag) 147355da1ebSSage Weil return ERR_PTR(-ENOMEM); 14851308806SMarkus Elfring 149355da1ebSSage Weil frag->frag = f; 150355da1ebSSage Weil frag->split_by = 0; 151355da1ebSSage Weil frag->mds = -1; 152355da1ebSSage Weil frag->ndist = 0; 153355da1ebSSage Weil 154355da1ebSSage Weil rb_link_node(&frag->node, parent, p); 155355da1ebSSage Weil rb_insert_color(&frag->node, &ci->i_fragtree); 156355da1ebSSage Weil 157355da1ebSSage Weil dout("get_or_create_frag added %llx.%llx frag %x\n", 158355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 159355da1ebSSage Weil return frag; 160355da1ebSSage Weil } 161355da1ebSSage Weil 162355da1ebSSage Weil /* 163355da1ebSSage Weil * find a specific frag @f 164355da1ebSSage Weil */ 165355da1ebSSage Weil struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) 166355da1ebSSage Weil { 167355da1ebSSage Weil struct rb_node *n = ci->i_fragtree.rb_node; 168355da1ebSSage Weil 169355da1ebSSage Weil while (n) { 170355da1ebSSage Weil struct ceph_inode_frag *frag = 171355da1ebSSage Weil rb_entry(n, struct ceph_inode_frag, node); 172355da1ebSSage Weil int c = ceph_frag_compare(f, frag->frag); 173355da1ebSSage Weil if (c < 0) 174355da1ebSSage Weil n = n->rb_left; 175355da1ebSSage Weil else if (c > 0) 176355da1ebSSage Weil n = n->rb_right; 177355da1ebSSage Weil else 178355da1ebSSage Weil return frag; 179355da1ebSSage Weil } 180355da1ebSSage Weil return NULL; 181355da1ebSSage Weil } 182355da1ebSSage Weil 183355da1ebSSage Weil /* 184355da1ebSSage Weil * Choose frag containing the given value @v. If @pfrag is 185355da1ebSSage Weil * specified, copy the frag delegation info to the caller if 186355da1ebSSage Weil * it is present. 187355da1ebSSage Weil */ 1883e7fbe9cSYan, Zheng static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 1893e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 190355da1ebSSage Weil { 191355da1ebSSage Weil u32 t = ceph_frag_make(0, 0); 192355da1ebSSage Weil struct ceph_inode_frag *frag; 193355da1ebSSage Weil unsigned nway, i; 194355da1ebSSage Weil u32 n; 195355da1ebSSage Weil 196355da1ebSSage Weil if (found) 197355da1ebSSage Weil *found = 0; 198355da1ebSSage Weil 199355da1ebSSage Weil while (1) { 200355da1ebSSage Weil WARN_ON(!ceph_frag_contains_value(t, v)); 201355da1ebSSage Weil frag = __ceph_find_frag(ci, t); 202355da1ebSSage Weil if (!frag) 203355da1ebSSage Weil break; /* t is a leaf */ 204355da1ebSSage Weil if (frag->split_by == 0) { 205355da1ebSSage Weil if (pfrag) 206355da1ebSSage Weil memcpy(pfrag, frag, sizeof(*pfrag)); 207355da1ebSSage Weil if (found) 208355da1ebSSage Weil *found = 1; 209355da1ebSSage Weil break; 210355da1ebSSage Weil } 211355da1ebSSage Weil 212355da1ebSSage Weil /* choose child */ 213355da1ebSSage Weil nway = 1 << frag->split_by; 214355da1ebSSage Weil dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, 215355da1ebSSage Weil frag->split_by, nway); 216355da1ebSSage Weil for (i = 0; i < nway; i++) { 217355da1ebSSage Weil n = ceph_frag_make_child(t, frag->split_by, i); 218355da1ebSSage Weil if (ceph_frag_contains_value(n, v)) { 219355da1ebSSage Weil t = n; 220355da1ebSSage Weil break; 221355da1ebSSage Weil } 222355da1ebSSage Weil } 223355da1ebSSage Weil BUG_ON(i == nway); 224355da1ebSSage Weil } 225355da1ebSSage Weil dout("choose_frag(%x) = %x\n", v, t); 226355da1ebSSage Weil 227355da1ebSSage Weil return t; 228355da1ebSSage Weil } 229355da1ebSSage Weil 2303e7fbe9cSYan, Zheng u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2313e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 2323e7fbe9cSYan, Zheng { 2333e7fbe9cSYan, Zheng u32 ret; 2343e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 2353e7fbe9cSYan, Zheng ret = __ceph_choose_frag(ci, v, pfrag, found); 2363e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 2373e7fbe9cSYan, Zheng return ret; 2383e7fbe9cSYan, Zheng } 2393e7fbe9cSYan, Zheng 240355da1ebSSage Weil /* 241355da1ebSSage Weil * Process dirfrag (delegation) info from the mds. Include leaf 242355da1ebSSage Weil * fragment in tree ONLY if ndist > 0. Otherwise, only 243355da1ebSSage Weil * branches/splits are included in i_fragtree) 244355da1ebSSage Weil */ 245355da1ebSSage Weil static int ceph_fill_dirfrag(struct inode *inode, 246355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo) 247355da1ebSSage Weil { 248355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 249355da1ebSSage Weil struct ceph_inode_frag *frag; 250355da1ebSSage Weil u32 id = le32_to_cpu(dirinfo->frag); 251355da1ebSSage Weil int mds = le32_to_cpu(dirinfo->auth); 252355da1ebSSage Weil int ndist = le32_to_cpu(dirinfo->ndist); 2538d08503cSYan, Zheng int diri_auth = -1; 254355da1ebSSage Weil int i; 255355da1ebSSage Weil int err = 0; 256355da1ebSSage Weil 2578d08503cSYan, Zheng spin_lock(&ci->i_ceph_lock); 2588d08503cSYan, Zheng if (ci->i_auth_cap) 2598d08503cSYan, Zheng diri_auth = ci->i_auth_cap->mds; 2608d08503cSYan, Zheng spin_unlock(&ci->i_ceph_lock); 2618d08503cSYan, Zheng 26242172119SYan, Zheng if (mds == -1) /* CDIR_AUTH_PARENT */ 26342172119SYan, Zheng mds = diri_auth; 26442172119SYan, Zheng 265355da1ebSSage Weil mutex_lock(&ci->i_fragtree_mutex); 2668d08503cSYan, Zheng if (ndist == 0 && mds == diri_auth) { 267355da1ebSSage Weil /* no delegation info needed. */ 268355da1ebSSage Weil frag = __ceph_find_frag(ci, id); 269355da1ebSSage Weil if (!frag) 270355da1ebSSage Weil goto out; 271355da1ebSSage Weil if (frag->split_by == 0) { 272355da1ebSSage Weil /* tree leaf, remove */ 273355da1ebSSage Weil dout("fill_dirfrag removed %llx.%llx frag %x" 274355da1ebSSage Weil " (no ref)\n", ceph_vinop(inode), id); 275355da1ebSSage Weil rb_erase(&frag->node, &ci->i_fragtree); 276355da1ebSSage Weil kfree(frag); 277355da1ebSSage Weil } else { 278355da1ebSSage Weil /* tree branch, keep and clear */ 279355da1ebSSage Weil dout("fill_dirfrag cleared %llx.%llx frag %x" 280355da1ebSSage Weil " referral\n", ceph_vinop(inode), id); 281355da1ebSSage Weil frag->mds = -1; 282355da1ebSSage Weil frag->ndist = 0; 283355da1ebSSage Weil } 284355da1ebSSage Weil goto out; 285355da1ebSSage Weil } 286355da1ebSSage Weil 287355da1ebSSage Weil 288355da1ebSSage Weil /* find/add this frag to store mds delegation info */ 289355da1ebSSage Weil frag = __get_or_create_frag(ci, id); 290355da1ebSSage Weil if (IS_ERR(frag)) { 291355da1ebSSage Weil /* this is not the end of the world; we can continue 292355da1ebSSage Weil with bad/inaccurate delegation info */ 293355da1ebSSage Weil pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", 294355da1ebSSage Weil ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); 295355da1ebSSage Weil err = -ENOMEM; 296355da1ebSSage Weil goto out; 297355da1ebSSage Weil } 298355da1ebSSage Weil 299355da1ebSSage Weil frag->mds = mds; 300355da1ebSSage Weil frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); 301355da1ebSSage Weil for (i = 0; i < frag->ndist; i++) 302355da1ebSSage Weil frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); 303355da1ebSSage Weil dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", 304355da1ebSSage Weil ceph_vinop(inode), frag->frag, frag->ndist); 305355da1ebSSage Weil 306355da1ebSSage Weil out: 307355da1ebSSage Weil mutex_unlock(&ci->i_fragtree_mutex); 308355da1ebSSage Weil return err; 309355da1ebSSage Weil } 310355da1ebSSage Weil 311a407846eSYan, Zheng static int frag_tree_split_cmp(const void *l, const void *r) 312a407846eSYan, Zheng { 313a407846eSYan, Zheng struct ceph_frag_tree_split *ls = (struct ceph_frag_tree_split*)l; 314a407846eSYan, Zheng struct ceph_frag_tree_split *rs = (struct ceph_frag_tree_split*)r; 315fe2ed425SJeff Layton return ceph_frag_compare(le32_to_cpu(ls->frag), 316fe2ed425SJeff Layton le32_to_cpu(rs->frag)); 317a407846eSYan, Zheng } 318a407846eSYan, Zheng 319a4b7431fSYan, Zheng static bool is_frag_child(u32 f, struct ceph_inode_frag *frag) 320a4b7431fSYan, Zheng { 321a4b7431fSYan, Zheng if (!frag) 322a4b7431fSYan, Zheng return f == ceph_frag_make(0, 0); 323a4b7431fSYan, Zheng if (ceph_frag_bits(f) != ceph_frag_bits(frag->frag) + frag->split_by) 324a4b7431fSYan, Zheng return false; 325a4b7431fSYan, Zheng return ceph_frag_contains_value(frag->frag, ceph_frag_value(f)); 326a4b7431fSYan, Zheng } 327a4b7431fSYan, Zheng 3283e7fbe9cSYan, Zheng static int ceph_fill_fragtree(struct inode *inode, 3293e7fbe9cSYan, Zheng struct ceph_frag_tree_head *fragtree, 3303e7fbe9cSYan, Zheng struct ceph_mds_reply_dirfrag *dirinfo) 3313e7fbe9cSYan, Zheng { 3323e7fbe9cSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 333a4b7431fSYan, Zheng struct ceph_inode_frag *frag, *prev_frag = NULL; 3343e7fbe9cSYan, Zheng struct rb_node *rb_node; 3351b1bc16dSYan, Zheng unsigned i, split_by, nsplits; 3361b1bc16dSYan, Zheng u32 id; 3373e7fbe9cSYan, Zheng bool update = false; 3383e7fbe9cSYan, Zheng 3393e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 3403e7fbe9cSYan, Zheng nsplits = le32_to_cpu(fragtree->nsplits); 3411b1bc16dSYan, Zheng if (nsplits != ci->i_fragtree_nsplits) { 3421b1bc16dSYan, Zheng update = true; 3431b1bc16dSYan, Zheng } else if (nsplits) { 3443e7fbe9cSYan, Zheng i = prandom_u32() % nsplits; 3453e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3463e7fbe9cSYan, Zheng if (!__ceph_find_frag(ci, id)) 3473e7fbe9cSYan, Zheng update = true; 3483e7fbe9cSYan, Zheng } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { 3493e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3503e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3513e7fbe9cSYan, Zheng if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) 3523e7fbe9cSYan, Zheng update = true; 3533e7fbe9cSYan, Zheng } 3543e7fbe9cSYan, Zheng if (!update && dirinfo) { 3553e7fbe9cSYan, Zheng id = le32_to_cpu(dirinfo->frag); 3563e7fbe9cSYan, Zheng if (id != __ceph_choose_frag(ci, id, NULL, NULL)) 3573e7fbe9cSYan, Zheng update = true; 3583e7fbe9cSYan, Zheng } 3593e7fbe9cSYan, Zheng if (!update) 3603e7fbe9cSYan, Zheng goto out_unlock; 3613e7fbe9cSYan, Zheng 362a407846eSYan, Zheng if (nsplits > 1) { 363a407846eSYan, Zheng sort(fragtree->splits, nsplits, sizeof(fragtree->splits[0]), 364a407846eSYan, Zheng frag_tree_split_cmp, NULL); 365a407846eSYan, Zheng } 366a407846eSYan, Zheng 3673e7fbe9cSYan, Zheng dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); 3683e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3693e7fbe9cSYan, Zheng for (i = 0; i < nsplits; i++) { 3703e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3711b1bc16dSYan, Zheng split_by = le32_to_cpu(fragtree->splits[i].by); 3721b1bc16dSYan, Zheng if (split_by == 0 || ceph_frag_bits(id) + split_by > 24) { 3731b1bc16dSYan, Zheng pr_err("fill_fragtree %llx.%llx invalid split %d/%u, " 3741b1bc16dSYan, Zheng "frag %x split by %d\n", ceph_vinop(inode), 3751b1bc16dSYan, Zheng i, nsplits, id, split_by); 3761b1bc16dSYan, Zheng continue; 3771b1bc16dSYan, Zheng } 3783e7fbe9cSYan, Zheng frag = NULL; 3793e7fbe9cSYan, Zheng while (rb_node) { 3803e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3813e7fbe9cSYan, Zheng if (ceph_frag_compare(frag->frag, id) >= 0) { 3823e7fbe9cSYan, Zheng if (frag->frag != id) 3833e7fbe9cSYan, Zheng frag = NULL; 3843e7fbe9cSYan, Zheng else 3853e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3863e7fbe9cSYan, Zheng break; 3873e7fbe9cSYan, Zheng } 3883e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 389a4b7431fSYan, Zheng /* delete stale split/leaf node */ 390a4b7431fSYan, Zheng if (frag->split_by > 0 || 391a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 3923e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 3931b1bc16dSYan, Zheng if (frag->split_by > 0) 3941b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 3953e7fbe9cSYan, Zheng kfree(frag); 396a4b7431fSYan, Zheng } 3973e7fbe9cSYan, Zheng frag = NULL; 3983e7fbe9cSYan, Zheng } 3993e7fbe9cSYan, Zheng if (!frag) { 4003e7fbe9cSYan, Zheng frag = __get_or_create_frag(ci, id); 4013e7fbe9cSYan, Zheng if (IS_ERR(frag)) 4023e7fbe9cSYan, Zheng continue; 4033e7fbe9cSYan, Zheng } 4041b1bc16dSYan, Zheng if (frag->split_by == 0) 4051b1bc16dSYan, Zheng ci->i_fragtree_nsplits++; 4061b1bc16dSYan, Zheng frag->split_by = split_by; 4073e7fbe9cSYan, Zheng dout(" frag %x split by %d\n", frag->frag, frag->split_by); 408a4b7431fSYan, Zheng prev_frag = frag; 4093e7fbe9cSYan, Zheng } 4103e7fbe9cSYan, Zheng while (rb_node) { 4113e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 4123e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 413a4b7431fSYan, Zheng /* delete stale split/leaf node */ 414a4b7431fSYan, Zheng if (frag->split_by > 0 || 415a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 4163e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 4171b1bc16dSYan, Zheng if (frag->split_by > 0) 4181b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 4193e7fbe9cSYan, Zheng kfree(frag); 4203e7fbe9cSYan, Zheng } 421a4b7431fSYan, Zheng } 4223e7fbe9cSYan, Zheng out_unlock: 4233e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 4243e7fbe9cSYan, Zheng return 0; 4253e7fbe9cSYan, Zheng } 426355da1ebSSage Weil 427355da1ebSSage Weil /* 428355da1ebSSage Weil * initialize a newly allocated inode. 429355da1ebSSage Weil */ 430355da1ebSSage Weil struct inode *ceph_alloc_inode(struct super_block *sb) 431355da1ebSSage Weil { 432355da1ebSSage Weil struct ceph_inode_info *ci; 433355da1ebSSage Weil int i; 434355da1ebSSage Weil 435355da1ebSSage Weil ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); 436355da1ebSSage Weil if (!ci) 437355da1ebSSage Weil return NULL; 438355da1ebSSage Weil 439355da1ebSSage Weil dout("alloc_inode %p\n", &ci->vfs_inode); 440355da1ebSSage Weil 441be655596SSage Weil spin_lock_init(&ci->i_ceph_lock); 442be655596SSage Weil 443355da1ebSSage Weil ci->i_version = 0; 44431c542a1SYan, Zheng ci->i_inline_version = 0; 445355da1ebSSage Weil ci->i_time_warp_seq = 0; 446355da1ebSSage Weil ci->i_ceph_flags = 0; 447fdd4e158SYan, Zheng atomic64_set(&ci->i_ordered_count, 1); 448fdd4e158SYan, Zheng atomic64_set(&ci->i_release_count, 1); 449fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], 0); 450fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], 0); 451355da1ebSSage Weil ci->i_symlink = NULL; 452355da1ebSSage Weil 453fb18a575SLuis Henriques ci->i_max_bytes = 0; 454fb18a575SLuis Henriques ci->i_max_files = 0; 455fb18a575SLuis Henriques 4566c0f3af7SSage Weil memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); 457785892feSJeff Layton memset(&ci->i_cached_layout, 0, sizeof(ci->i_cached_layout)); 45830c156d9SYan, Zheng RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL); 4596c0f3af7SSage Weil 460355da1ebSSage Weil ci->i_fragtree = RB_ROOT; 461355da1ebSSage Weil mutex_init(&ci->i_fragtree_mutex); 462355da1ebSSage Weil 463355da1ebSSage Weil ci->i_xattrs.blob = NULL; 464355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 465355da1ebSSage Weil ci->i_xattrs.dirty = false; 466355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 467355da1ebSSage Weil ci->i_xattrs.count = 0; 468355da1ebSSage Weil ci->i_xattrs.names_size = 0; 469355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 470355da1ebSSage Weil ci->i_xattrs.version = 0; 471355da1ebSSage Weil ci->i_xattrs.index_version = 0; 472355da1ebSSage Weil 473355da1ebSSage Weil ci->i_caps = RB_ROOT; 474355da1ebSSage Weil ci->i_auth_cap = NULL; 475355da1ebSSage Weil ci->i_dirty_caps = 0; 476355da1ebSSage Weil ci->i_flushing_caps = 0; 477355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_dirty_item); 478355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_flushing_item); 479f66fd9f0SYan, Zheng ci->i_prealloc_cap_flush = NULL; 480e4500b5eSYan, Zheng INIT_LIST_HEAD(&ci->i_cap_flush_list); 481355da1ebSSage Weil init_waitqueue_head(&ci->i_cap_wq); 482355da1ebSSage Weil ci->i_hold_caps_max = 0; 483355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_delay_list); 484355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_snaps); 485355da1ebSSage Weil ci->i_head_snapc = NULL; 486355da1ebSSage Weil ci->i_snap_caps = 0; 487355da1ebSSage Weil 488719a2514SYan, Zheng ci->i_last_rd = ci->i_last_wr = jiffies - 3600 * HZ; 489774a6a11SYan, Zheng for (i = 0; i < CEPH_FILE_MODE_BITS; i++) 490355da1ebSSage Weil ci->i_nr_by_mode[i] = 0; 491355da1ebSSage Weil 492b0d7c223SYan, Zheng mutex_init(&ci->i_truncate_mutex); 493355da1ebSSage Weil ci->i_truncate_seq = 0; 494355da1ebSSage Weil ci->i_truncate_size = 0; 495355da1ebSSage Weil ci->i_truncate_pending = 0; 496355da1ebSSage Weil 497355da1ebSSage Weil ci->i_max_size = 0; 498355da1ebSSage Weil ci->i_reported_size = 0; 499355da1ebSSage Weil ci->i_wanted_max_size = 0; 500355da1ebSSage Weil ci->i_requested_max_size = 0; 501355da1ebSSage Weil 502355da1ebSSage Weil ci->i_pin_ref = 0; 503355da1ebSSage Weil ci->i_rd_ref = 0; 504355da1ebSSage Weil ci->i_rdcache_ref = 0; 505355da1ebSSage Weil ci->i_wr_ref = 0; 506d3d0720dSHenry C Chang ci->i_wb_ref = 0; 507f85122afSJeff Layton ci->i_fx_ref = 0; 508355da1ebSSage Weil ci->i_wrbuffer_ref = 0; 509355da1ebSSage Weil ci->i_wrbuffer_ref_head = 0; 51089aa5930SYan, Zheng atomic_set(&ci->i_filelock_ref, 0); 5111e9c2eb6SYan, Zheng atomic_set(&ci->i_shared_gen, 1); 512355da1ebSSage Weil ci->i_rdcache_gen = 0; 513355da1ebSSage Weil ci->i_rdcache_revoking = 0; 514355da1ebSSage Weil 515355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_dirops); 51668cd5b4bSYan, Zheng INIT_LIST_HEAD(&ci->i_unsafe_iops); 517355da1ebSSage Weil spin_lock_init(&ci->i_unsafe_lock); 518355da1ebSSage Weil 519355da1ebSSage Weil ci->i_snap_realm = NULL; 520355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_realm_item); 521355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_flush_item); 522355da1ebSSage Weil 5231cf89a8dSYan, Zheng INIT_WORK(&ci->i_work, ceph_inode_work); 5241cf89a8dSYan, Zheng ci->i_work_mask = 0; 525245ce991SJeff Layton memset(&ci->i_btime, '\0', sizeof(ci->i_btime)); 526355da1ebSSage Weil 52799ccbd22SMilosz Tanski ceph_fscache_inode_init(ci); 52899ccbd22SMilosz Tanski 529f4b97866SYan, Zheng ci->i_meta_err = 0; 530f4b97866SYan, Zheng 531355da1ebSSage Weil return &ci->vfs_inode; 532355da1ebSSage Weil } 533355da1ebSSage Weil 534cfa6d412SAl Viro void ceph_free_inode(struct inode *inode) 535fa0d7e3dSNick Piggin { 536fa0d7e3dSNick Piggin struct ceph_inode_info *ci = ceph_inode(inode); 537fa0d7e3dSNick Piggin 538daf5cc27SAl Viro kfree(ci->i_symlink); 539fa0d7e3dSNick Piggin kmem_cache_free(ceph_inode_cachep, ci); 540fa0d7e3dSNick Piggin } 541fa0d7e3dSNick Piggin 54287bc5b89SYan, Zheng void ceph_evict_inode(struct inode *inode) 543355da1ebSSage Weil { 544355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 5451dd8d470SXiubo Li struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); 546355da1ebSSage Weil struct ceph_inode_frag *frag; 547355da1ebSSage Weil struct rb_node *n; 548355da1ebSSage Weil 54987bc5b89SYan, Zheng dout("evict_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); 55087bc5b89SYan, Zheng 5511dd8d470SXiubo Li percpu_counter_dec(&mdsc->metric.total_inodes); 5521dd8d470SXiubo Li 55387bc5b89SYan, Zheng truncate_inode_pages_final(&inode->i_data); 55487bc5b89SYan, Zheng clear_inode(inode); 555355da1ebSSage Weil 55699ccbd22SMilosz Tanski ceph_fscache_unregister_inode_cookie(ci); 55799ccbd22SMilosz Tanski 558d6e47819SYan, Zheng __ceph_remove_caps(ci); 559355da1ebSSage Weil 560d557c48dSLuis Henriques if (__ceph_has_any_quota(ci)) 561d557c48dSLuis Henriques ceph_adjust_quota_realms_count(inode, false); 562d557c48dSLuis Henriques 5638b218b8aSSage Weil /* 5648b218b8aSSage Weil * we may still have a snap_realm reference if there are stray 565d9df2783SYan, Zheng * caps in i_snap_caps. 5668b218b8aSSage Weil */ 5678b218b8aSSage Weil if (ci->i_snap_realm) { 56875c9627eSYan, Zheng if (ceph_snap(inode) == CEPH_NOSNAP) { 5698b218b8aSSage Weil struct ceph_snap_realm *realm = ci->i_snap_realm; 57075c9627eSYan, Zheng dout(" dropping residual ref to snap realm %p\n", 57175c9627eSYan, Zheng realm); 5728b218b8aSSage Weil spin_lock(&realm->inodes_with_caps_lock); 5738b218b8aSSage Weil list_del_init(&ci->i_snap_realm_item); 574e3161f17SLuis Henriques ci->i_snap_realm = NULL; 575e3161f17SLuis Henriques if (realm->ino == ci->i_vino.ino) 576e3161f17SLuis Henriques realm->inode = NULL; 5778b218b8aSSage Weil spin_unlock(&realm->inodes_with_caps_lock); 5788b218b8aSSage Weil ceph_put_snap_realm(mdsc, realm); 57975c9627eSYan, Zheng } else { 58075c9627eSYan, Zheng ceph_put_snapid_map(mdsc, ci->i_snapid_map); 58175c9627eSYan, Zheng ci->i_snap_realm = NULL; 58275c9627eSYan, Zheng } 5838b218b8aSSage Weil } 5848b218b8aSSage Weil 585355da1ebSSage Weil while ((n = rb_first(&ci->i_fragtree)) != NULL) { 586355da1ebSSage Weil frag = rb_entry(n, struct ceph_inode_frag, node); 587355da1ebSSage Weil rb_erase(n, &ci->i_fragtree); 588355da1ebSSage Weil kfree(frag); 589355da1ebSSage Weil } 5901b1bc16dSYan, Zheng ci->i_fragtree_nsplits = 0; 591355da1ebSSage Weil 592355da1ebSSage Weil __ceph_destroy_xattrs(ci); 593b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 594355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 595b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 596355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 597355da1ebSSage Weil 598779fe0fbSYan, Zheng ceph_put_string(rcu_dereference_raw(ci->i_layout.pool_ns)); 599785892feSJeff Layton ceph_put_string(rcu_dereference_raw(ci->i_cached_layout.pool_ns)); 600355da1ebSSage Weil } 601355da1ebSSage Weil 602224a7542SYan, Zheng static inline blkcnt_t calc_inode_blocks(u64 size) 603224a7542SYan, Zheng { 604224a7542SYan, Zheng return (size + (1<<9) - 1) >> 9; 605224a7542SYan, Zheng } 606224a7542SYan, Zheng 607355da1ebSSage Weil /* 608355da1ebSSage Weil * Helpers to fill in size, ctime, mtime, and atime. We have to be 609355da1ebSSage Weil * careful because either the client or MDS may have more up to date 610355da1ebSSage Weil * info, depending on which capabilities are held, and whether 611355da1ebSSage Weil * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime 612355da1ebSSage Weil * and size are monotonically increasing, except when utimes() or 613355da1ebSSage Weil * truncate() increments the corresponding _seq values.) 614355da1ebSSage Weil */ 615355da1ebSSage Weil int ceph_fill_file_size(struct inode *inode, int issued, 616355da1ebSSage Weil u32 truncate_seq, u64 truncate_size, u64 size) 617355da1ebSSage Weil { 618355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 619355da1ebSSage Weil int queue_trunc = 0; 620355da1ebSSage Weil 621355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || 622355da1ebSSage Weil (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { 623355da1ebSSage Weil dout("size %lld -> %llu\n", inode->i_size, size); 624a3d714c3SYan, Zheng if (size > 0 && S_ISDIR(inode->i_mode)) { 625a3d714c3SYan, Zheng pr_err("fill_file_size non-zero size for directory\n"); 626a3d714c3SYan, Zheng size = 0; 627a3d714c3SYan, Zheng } 62899c88e69SYan, Zheng i_size_write(inode, size); 629224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 630355da1ebSSage Weil ci->i_reported_size = size; 631355da1ebSSage Weil if (truncate_seq != ci->i_truncate_seq) { 632355da1ebSSage Weil dout("truncate_seq %u -> %u\n", 633355da1ebSSage Weil ci->i_truncate_seq, truncate_seq); 634355da1ebSSage Weil ci->i_truncate_seq = truncate_seq; 635b0d7c223SYan, Zheng 636b0d7c223SYan, Zheng /* the MDS should have revoked these caps */ 637b0d7c223SYan, Zheng WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | 638b0d7c223SYan, Zheng CEPH_CAP_FILE_RD | 639b0d7c223SYan, Zheng CEPH_CAP_FILE_WR | 640b0d7c223SYan, Zheng CEPH_CAP_FILE_LAZYIO)); 6413d497d85SYehuda Sadeh /* 6423d497d85SYehuda Sadeh * If we hold relevant caps, or in the case where we're 6433d497d85SYehuda Sadeh * not the only client referencing this file and we 6443d497d85SYehuda Sadeh * don't hold those caps, then we need to check whether 6453d497d85SYehuda Sadeh * the file is either opened or mmaped 6463d497d85SYehuda Sadeh */ 647b0d7c223SYan, Zheng if ((issued & (CEPH_CAP_FILE_CACHE| 648b0d7c223SYan, Zheng CEPH_CAP_FILE_BUFFER)) || 6493d497d85SYehuda Sadeh mapping_mapped(inode->i_mapping) || 650719a2514SYan, Zheng __ceph_is_file_opened(ci)) { 651355da1ebSSage Weil ci->i_truncate_pending++; 652355da1ebSSage Weil queue_trunc = 1; 653355da1ebSSage Weil } 654355da1ebSSage Weil } 655355da1ebSSage Weil } 656355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && 657355da1ebSSage Weil ci->i_truncate_size != truncate_size) { 658355da1ebSSage Weil dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, 659355da1ebSSage Weil truncate_size); 660355da1ebSSage Weil ci->i_truncate_size = truncate_size; 661355da1ebSSage Weil } 66299ccbd22SMilosz Tanski 66399ccbd22SMilosz Tanski if (queue_trunc) 66499ccbd22SMilosz Tanski ceph_fscache_invalidate(inode); 66599ccbd22SMilosz Tanski 666355da1ebSSage Weil return queue_trunc; 667355da1ebSSage Weil } 668355da1ebSSage Weil 669355da1ebSSage Weil void ceph_fill_file_time(struct inode *inode, int issued, 6709bbeab41SArnd Bergmann u64 time_warp_seq, struct timespec64 *ctime, 6719bbeab41SArnd Bergmann struct timespec64 *mtime, struct timespec64 *atime) 672355da1ebSSage Weil { 673355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 674355da1ebSSage Weil int warn = 0; 675355da1ebSSage Weil 676355da1ebSSage Weil if (issued & (CEPH_CAP_FILE_EXCL| 677355da1ebSSage Weil CEPH_CAP_FILE_WR| 678d8672d64SSage Weil CEPH_CAP_FILE_BUFFER| 679d8672d64SSage Weil CEPH_CAP_AUTH_EXCL| 680d8672d64SSage Weil CEPH_CAP_XATTR_EXCL)) { 681ffdeec7aSYan, Zheng if (ci->i_version == 0 || 6829bbeab41SArnd Bergmann timespec64_compare(ctime, &inode->i_ctime) > 0) { 68313442b03SDeepa Dinamani dout("ctime %lld.%09ld -> %lld.%09ld inc w/ cap\n", 6849bbeab41SArnd Bergmann inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 6859bbeab41SArnd Bergmann ctime->tv_sec, ctime->tv_nsec); 6869bbeab41SArnd Bergmann inode->i_ctime = *ctime; 687355da1ebSSage Weil } 688ffdeec7aSYan, Zheng if (ci->i_version == 0 || 689ffdeec7aSYan, Zheng ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { 690355da1ebSSage Weil /* the MDS did a utimes() */ 69113442b03SDeepa Dinamani dout("mtime %lld.%09ld -> %lld.%09ld " 692355da1ebSSage Weil "tw %d -> %d\n", 6939bbeab41SArnd Bergmann inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 6949bbeab41SArnd Bergmann mtime->tv_sec, mtime->tv_nsec, 695355da1ebSSage Weil ci->i_time_warp_seq, (int)time_warp_seq); 696355da1ebSSage Weil 6979bbeab41SArnd Bergmann inode->i_mtime = *mtime; 6989bbeab41SArnd Bergmann inode->i_atime = *atime; 699355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 700355da1ebSSage Weil } else if (time_warp_seq == ci->i_time_warp_seq) { 701355da1ebSSage Weil /* nobody did utimes(); take the max */ 7029bbeab41SArnd Bergmann if (timespec64_compare(mtime, &inode->i_mtime) > 0) { 70313442b03SDeepa Dinamani dout("mtime %lld.%09ld -> %lld.%09ld inc\n", 7049bbeab41SArnd Bergmann inode->i_mtime.tv_sec, 705355da1ebSSage Weil inode->i_mtime.tv_nsec, 7069bbeab41SArnd Bergmann mtime->tv_sec, mtime->tv_nsec); 7079bbeab41SArnd Bergmann inode->i_mtime = *mtime; 708355da1ebSSage Weil } 7099bbeab41SArnd Bergmann if (timespec64_compare(atime, &inode->i_atime) > 0) { 71013442b03SDeepa Dinamani dout("atime %lld.%09ld -> %lld.%09ld inc\n", 7119bbeab41SArnd Bergmann inode->i_atime.tv_sec, 712355da1ebSSage Weil inode->i_atime.tv_nsec, 7139bbeab41SArnd Bergmann atime->tv_sec, atime->tv_nsec); 7149bbeab41SArnd Bergmann inode->i_atime = *atime; 715355da1ebSSage Weil } 716355da1ebSSage Weil } else if (issued & CEPH_CAP_FILE_EXCL) { 717355da1ebSSage Weil /* we did a utimes(); ignore mds values */ 718355da1ebSSage Weil } else { 719355da1ebSSage Weil warn = 1; 720355da1ebSSage Weil } 721355da1ebSSage Weil } else { 722d8672d64SSage Weil /* we have no write|excl caps; whatever the MDS says is true */ 723355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { 7249bbeab41SArnd Bergmann inode->i_ctime = *ctime; 7259bbeab41SArnd Bergmann inode->i_mtime = *mtime; 7269bbeab41SArnd Bergmann inode->i_atime = *atime; 727355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 728355da1ebSSage Weil } else { 729355da1ebSSage Weil warn = 1; 730355da1ebSSage Weil } 731355da1ebSSage Weil } 732355da1ebSSage Weil if (warn) /* time_warp_seq shouldn't go backwards */ 733355da1ebSSage Weil dout("%p mds time_warp_seq %llu < %u\n", 734355da1ebSSage Weil inode, time_warp_seq, ci->i_time_warp_seq); 735355da1ebSSage Weil } 736355da1ebSSage Weil 737355da1ebSSage Weil /* 738355da1ebSSage Weil * Populate an inode based on info from mds. May be called on new or 739355da1ebSSage Weil * existing inodes. 740355da1ebSSage Weil */ 741966c7160SJeff Layton int ceph_fill_inode(struct inode *inode, struct page *locked_page, 742355da1ebSSage Weil struct ceph_mds_reply_info_in *iinfo, 743355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo, 74457c21994SJeff Layton struct ceph_mds_session *session, int cap_fmode, 745355da1ebSSage Weil struct ceph_cap_reservation *caps_reservation) 746355da1ebSSage Weil { 7472678da88SXiubo Li struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); 748355da1ebSSage Weil struct ceph_mds_reply_inode *info = iinfo->in; 749355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 7502af54a72SYan, Zheng int issued, new_issued, info_caps; 7519bbeab41SArnd Bergmann struct timespec64 mtime, atime, ctime; 752355da1ebSSage Weil struct ceph_buffer *xattr_blob = NULL; 753af8a85a4SLuis Henriques struct ceph_buffer *old_blob = NULL; 754779fe0fbSYan, Zheng struct ceph_string *pool_ns = NULL; 755d9df2783SYan, Zheng struct ceph_cap *new_cap = NULL; 756355da1ebSSage Weil int err = 0; 757d9df2783SYan, Zheng bool wake = false; 758f98a128aSYan, Zheng bool queue_trunc = false; 759f98a128aSYan, Zheng bool new_version = false; 76031c542a1SYan, Zheng bool fill_inline = false; 761355da1ebSSage Weil 762966c7160SJeff Layton dout("%s %p ino %llx.%llx v %llu had %llu\n", __func__, 763355da1ebSSage Weil inode, ceph_vinop(inode), le64_to_cpu(info->version), 764355da1ebSSage Weil ci->i_version); 765355da1ebSSage Weil 7662af54a72SYan, Zheng info_caps = le32_to_cpu(info->cap.caps); 7672af54a72SYan, Zheng 768d9df2783SYan, Zheng /* prealloc new cap struct */ 7699a6bed4fSJeff Layton if (info_caps && ceph_snap(inode) == CEPH_NOSNAP) { 770d9df2783SYan, Zheng new_cap = ceph_get_cap(mdsc, caps_reservation); 7719a6bed4fSJeff Layton if (!new_cap) 7729a6bed4fSJeff Layton return -ENOMEM; 7739a6bed4fSJeff Layton } 774d9df2783SYan, Zheng 775355da1ebSSage Weil /* 776355da1ebSSage Weil * prealloc xattr data, if it looks like we'll need it. only 777355da1ebSSage Weil * if len > 4 (meaning there are actually xattrs; the first 4 778355da1ebSSage Weil * bytes are the xattr count). 779355da1ebSSage Weil */ 780355da1ebSSage Weil if (iinfo->xattr_len > 4) { 781b6c1d5b8SSage Weil xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); 782355da1ebSSage Weil if (!xattr_blob) 783966c7160SJeff Layton pr_err("%s ENOMEM xattr blob %d bytes\n", __func__, 784355da1ebSSage Weil iinfo->xattr_len); 785355da1ebSSage Weil } 786355da1ebSSage Weil 787779fe0fbSYan, Zheng if (iinfo->pool_ns_len > 0) 788779fe0fbSYan, Zheng pool_ns = ceph_find_or_create_string(iinfo->pool_ns_data, 789779fe0fbSYan, Zheng iinfo->pool_ns_len); 790779fe0fbSYan, Zheng 79175c9627eSYan, Zheng if (ceph_snap(inode) != CEPH_NOSNAP && !ci->i_snapid_map) 79275c9627eSYan, Zheng ci->i_snapid_map = ceph_get_snapid_map(mdsc, ceph_snap(inode)); 79375c9627eSYan, Zheng 794be655596SSage Weil spin_lock(&ci->i_ceph_lock); 795355da1ebSSage Weil 796355da1ebSSage Weil /* 797355da1ebSSage Weil * provided version will be odd if inode value is projected, 7988bd59e01SSage Weil * even if stable. skip the update if we have newer stable 7998bd59e01SSage Weil * info (ours>=theirs, e.g. due to racing mds replies), unless 8008bd59e01SSage Weil * we are getting projected (unstable) info (in which case the 8018bd59e01SSage Weil * version is odd, and we want ours>theirs). 8028bd59e01SSage Weil * us them 8038bd59e01SSage Weil * 2 2 skip 8048bd59e01SSage Weil * 3 2 skip 8058bd59e01SSage Weil * 3 3 update 806355da1ebSSage Weil */ 807f98a128aSYan, Zheng if (ci->i_version == 0 || 808f98a128aSYan, Zheng ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 809f98a128aSYan, Zheng le64_to_cpu(info->version) > (ci->i_version & ~1))) 810f98a128aSYan, Zheng new_version = true; 811355da1ebSSage Weil 812a35ead31SJeff Layton /* Update change_attribute */ 813a35ead31SJeff Layton inode_set_max_iversion_raw(inode, iinfo->change_attr); 814a35ead31SJeff Layton 8152af54a72SYan, Zheng __ceph_caps_issued(ci, &issued); 8162af54a72SYan, Zheng issued |= __ceph_caps_dirty(ci); 8172af54a72SYan, Zheng new_issued = ~issued & info_caps; 818355da1ebSSage Weil 819355da1ebSSage Weil /* update inode */ 820355da1ebSSage Weil inode->i_rdev = le32_to_cpu(info->rdev); 82175067034SLuis Henriques /* directories have fl_stripe_unit set to zero */ 82275067034SLuis Henriques if (le32_to_cpu(info->layout.fl_stripe_unit)) 82375067034SLuis Henriques inode->i_blkbits = 82475067034SLuis Henriques fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; 82575067034SLuis Henriques else 82675067034SLuis Henriques inode->i_blkbits = CEPH_BLOCK_SHIFT; 827355da1ebSSage Weil 828d557c48dSLuis Henriques __ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files); 829fb18a575SLuis Henriques 830f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && 831f98a128aSYan, Zheng (issued & CEPH_CAP_AUTH_EXCL) == 0) { 832355da1ebSSage Weil inode->i_mode = le32_to_cpu(info->mode); 833ab871b90SEric W. Biederman inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); 834ab871b90SEric W. Biederman inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); 835355da1ebSSage Weil dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, 836bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 837bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid)); 838245ce991SJeff Layton ceph_decode_timespec64(&ci->i_btime, &iinfo->btime); 839193e7b37SDavid Disseldorp ceph_decode_timespec64(&ci->i_snap_btime, &iinfo->snap_btime); 840355da1ebSSage Weil } 841355da1ebSSage Weil 842f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && 843f98a128aSYan, Zheng (issued & CEPH_CAP_LINK_EXCL) == 0) 844bfe86848SMiklos Szeredi set_nlink(inode, le32_to_cpu(info->nlink)); 845355da1ebSSage Weil 846f98a128aSYan, Zheng if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { 847355da1ebSSage Weil /* be careful with mtime, atime, size */ 8489bbeab41SArnd Bergmann ceph_decode_timespec64(&atime, &info->atime); 8499bbeab41SArnd Bergmann ceph_decode_timespec64(&mtime, &info->mtime); 8509bbeab41SArnd Bergmann ceph_decode_timespec64(&ctime, &info->ctime); 851f98a128aSYan, Zheng ceph_fill_file_time(inode, issued, 852f98a128aSYan, Zheng le32_to_cpu(info->time_warp_seq), 853f98a128aSYan, Zheng &ctime, &mtime, &atime); 854f98a128aSYan, Zheng } 855f98a128aSYan, Zheng 8562af54a72SYan, Zheng if (new_version || (info_caps & CEPH_CAP_FILE_SHARED)) { 8572af54a72SYan, Zheng ci->i_files = le64_to_cpu(info->files); 8582af54a72SYan, Zheng ci->i_subdirs = le64_to_cpu(info->subdirs); 8592af54a72SYan, Zheng } 8602af54a72SYan, Zheng 861f98a128aSYan, Zheng if (new_version || 862f98a128aSYan, Zheng (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { 8637627151eSYan, Zheng s64 old_pool = ci->i_layout.pool_id; 864779fe0fbSYan, Zheng struct ceph_string *old_ns; 865779fe0fbSYan, Zheng 8667627151eSYan, Zheng ceph_file_layout_from_legacy(&ci->i_layout, &info->layout); 867779fe0fbSYan, Zheng old_ns = rcu_dereference_protected(ci->i_layout.pool_ns, 868779fe0fbSYan, Zheng lockdep_is_held(&ci->i_ceph_lock)); 869779fe0fbSYan, Zheng rcu_assign_pointer(ci->i_layout.pool_ns, pool_ns); 870779fe0fbSYan, Zheng 871779fe0fbSYan, Zheng if (ci->i_layout.pool_id != old_pool || pool_ns != old_ns) 87210183a69SYan, Zheng ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; 87310183a69SYan, Zheng 874779fe0fbSYan, Zheng pool_ns = old_ns; 875f98a128aSYan, Zheng 876355da1ebSSage Weil queue_trunc = ceph_fill_file_size(inode, issued, 877355da1ebSSage Weil le32_to_cpu(info->truncate_seq), 878355da1ebSSage Weil le64_to_cpu(info->truncate_size), 879355da1ebSSage Weil le64_to_cpu(info->size)); 880f98a128aSYan, Zheng /* only update max_size on auth cap */ 881f98a128aSYan, Zheng if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 882f98a128aSYan, Zheng ci->i_max_size != le64_to_cpu(info->max_size)) { 883f98a128aSYan, Zheng dout("max_size %lld -> %llu\n", ci->i_max_size, 884f98a128aSYan, Zheng le64_to_cpu(info->max_size)); 885f98a128aSYan, Zheng ci->i_max_size = le64_to_cpu(info->max_size); 886f98a128aSYan, Zheng } 887f98a128aSYan, Zheng } 888355da1ebSSage Weil 88949a9f4f6SYan, Zheng /* layout and rstat are not tracked by capability, update them if 89049a9f4f6SYan, Zheng * the inode info is from auth mds */ 89149a9f4f6SYan, Zheng if (new_version || (info->cap.flags & CEPH_CAP_FLAG_AUTH)) { 89249a9f4f6SYan, Zheng if (S_ISDIR(inode->i_mode)) { 89349a9f4f6SYan, Zheng ci->i_dir_layout = iinfo->dir_layout; 89449a9f4f6SYan, Zheng ci->i_rbytes = le64_to_cpu(info->rbytes); 89549a9f4f6SYan, Zheng ci->i_rfiles = le64_to_cpu(info->rfiles); 89649a9f4f6SYan, Zheng ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); 89708796873SYan, Zheng ci->i_dir_pin = iinfo->dir_pin; 8989bbeab41SArnd Bergmann ceph_decode_timespec64(&ci->i_rctime, &info->rctime); 89949a9f4f6SYan, Zheng } 90049a9f4f6SYan, Zheng } 90149a9f4f6SYan, Zheng 902355da1ebSSage Weil /* xattrs */ 903355da1ebSSage Weil /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ 904508b32d8SYan, Zheng if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && 905355da1ebSSage Weil le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { 906355da1ebSSage Weil if (ci->i_xattrs.blob) 907af8a85a4SLuis Henriques old_blob = ci->i_xattrs.blob; 908355da1ebSSage Weil ci->i_xattrs.blob = xattr_blob; 909355da1ebSSage Weil if (xattr_blob) 910355da1ebSSage Weil memcpy(ci->i_xattrs.blob->vec.iov_base, 911355da1ebSSage Weil iinfo->xattr_data, iinfo->xattr_len); 912355da1ebSSage Weil ci->i_xattrs.version = le64_to_cpu(info->xattr_version); 9137221fe4cSGuangliang Zhao ceph_forget_all_cached_acls(inode); 914ac6713ccSYan, Zheng ceph_security_invalidate_secctx(inode); 915a6424e48SSage Weil xattr_blob = NULL; 916355da1ebSSage Weil } 917355da1ebSSage Weil 918ffdeec7aSYan, Zheng /* finally update i_version */ 919aae1a442SYan, Zheng if (le64_to_cpu(info->version) > ci->i_version) 920ffdeec7aSYan, Zheng ci->i_version = le64_to_cpu(info->version); 921ffdeec7aSYan, Zheng 922355da1ebSSage Weil inode->i_mapping->a_ops = &ceph_aops; 923355da1ebSSage Weil 924355da1ebSSage Weil switch (inode->i_mode & S_IFMT) { 925355da1ebSSage Weil case S_IFIFO: 926355da1ebSSage Weil case S_IFBLK: 927355da1ebSSage Weil case S_IFCHR: 928355da1ebSSage Weil case S_IFSOCK: 9295ba72e60SYan, Zheng inode->i_blkbits = PAGE_SHIFT; 930355da1ebSSage Weil init_special_inode(inode, inode->i_mode, inode->i_rdev); 931355da1ebSSage Weil inode->i_op = &ceph_file_iops; 932355da1ebSSage Weil break; 933355da1ebSSage Weil case S_IFREG: 934355da1ebSSage Weil inode->i_op = &ceph_file_iops; 935355da1ebSSage Weil inode->i_fop = &ceph_file_fops; 936355da1ebSSage Weil break; 937355da1ebSSage Weil case S_IFLNK: 938355da1ebSSage Weil inode->i_op = &ceph_symlink_iops; 939355da1ebSSage Weil if (!ci->i_symlink) { 940810339ecSXi Wang u32 symlen = iinfo->symlink_len; 941355da1ebSSage Weil char *sym; 942355da1ebSSage Weil 943be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 944355da1ebSSage Weil 945224a7542SYan, Zheng if (symlen != i_size_read(inode)) { 946966c7160SJeff Layton pr_err("%s %llx.%llx BAD symlink " 947966c7160SJeff Layton "size %lld\n", __func__, 948966c7160SJeff Layton ceph_vinop(inode), 949224a7542SYan, Zheng i_size_read(inode)); 950224a7542SYan, Zheng i_size_write(inode, symlen); 951224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(symlen); 952224a7542SYan, Zheng } 953810339ecSXi Wang 954355da1ebSSage Weil err = -ENOMEM; 955810339ecSXi Wang sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); 956355da1ebSSage Weil if (!sym) 957355da1ebSSage Weil goto out; 958355da1ebSSage Weil 959be655596SSage Weil spin_lock(&ci->i_ceph_lock); 960355da1ebSSage Weil if (!ci->i_symlink) 961355da1ebSSage Weil ci->i_symlink = sym; 962355da1ebSSage Weil else 963355da1ebSSage Weil kfree(sym); /* lost a race */ 964355da1ebSSage Weil } 965ac194dccSAl Viro inode->i_link = ci->i_symlink; 966355da1ebSSage Weil break; 967355da1ebSSage Weil case S_IFDIR: 968355da1ebSSage Weil inode->i_op = &ceph_dir_iops; 969355da1ebSSage Weil inode->i_fop = &ceph_dir_fops; 970355da1ebSSage Weil break; 971355da1ebSSage Weil default: 972966c7160SJeff Layton pr_err("%s %llx.%llx BAD mode 0%o\n", __func__, 973355da1ebSSage Weil ceph_vinop(inode), inode->i_mode); 974355da1ebSSage Weil } 975355da1ebSSage Weil 976355da1ebSSage Weil /* were we issued a capability? */ 9772af54a72SYan, Zheng if (info_caps) { 978355da1ebSSage Weil if (ceph_snap(inode) == CEPH_NOSNAP) { 979355da1ebSSage Weil ceph_add_cap(inode, session, 980355da1ebSSage Weil le64_to_cpu(info->cap.cap_id), 981135e671eSYan, Zheng info_caps, 982355da1ebSSage Weil le32_to_cpu(info->cap.wanted), 983355da1ebSSage Weil le32_to_cpu(info->cap.seq), 984355da1ebSSage Weil le32_to_cpu(info->cap.mseq), 985355da1ebSSage Weil le64_to_cpu(info->cap.realm), 986d9df2783SYan, Zheng info->cap.flags, &new_cap); 9872f92b3d0SYan, Zheng 9882f92b3d0SYan, Zheng /* set dir completion flag? */ 9892f92b3d0SYan, Zheng if (S_ISDIR(inode->i_mode) && 9902f92b3d0SYan, Zheng ci->i_files == 0 && ci->i_subdirs == 0 && 9912af54a72SYan, Zheng (info_caps & CEPH_CAP_FILE_SHARED) && 9922f92b3d0SYan, Zheng (issued & CEPH_CAP_FILE_EXCL) == 0 && 9932f92b3d0SYan, Zheng !__ceph_dir_is_complete(ci)) { 9942f92b3d0SYan, Zheng dout(" marking %p complete (empty)\n", inode); 995fdd4e158SYan, Zheng i_size_write(inode, 0); 9962f92b3d0SYan, Zheng __ceph_dir_set_complete(ci, 997fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count), 998fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count)); 9992f92b3d0SYan, Zheng } 10002f92b3d0SYan, Zheng 1001d9df2783SYan, Zheng wake = true; 1002355da1ebSSage Weil } else { 1003355da1ebSSage Weil dout(" %p got snap_caps %s\n", inode, 10042af54a72SYan, Zheng ceph_cap_string(info_caps)); 10052af54a72SYan, Zheng ci->i_snap_caps |= info_caps; 1006355da1ebSSage Weil } 1007355da1ebSSage Weil } 100831c542a1SYan, Zheng 100931c542a1SYan, Zheng if (iinfo->inline_version > 0 && 101031c542a1SYan, Zheng iinfo->inline_version >= ci->i_inline_version) { 101131c542a1SYan, Zheng int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; 101231c542a1SYan, Zheng ci->i_inline_version = iinfo->inline_version; 101331c542a1SYan, Zheng if (ci->i_inline_version != CEPH_INLINE_NONE && 10142af54a72SYan, Zheng (locked_page || (info_caps & cache_caps))) 101531c542a1SYan, Zheng fill_inline = true; 101631c542a1SYan, Zheng } 101731c542a1SYan, Zheng 1018719a2514SYan, Zheng if (cap_fmode >= 0) { 1019719a2514SYan, Zheng if (!info_caps) 1020719a2514SYan, Zheng pr_warn("mds issued no caps on %llx.%llx\n", 1021719a2514SYan, Zheng ceph_vinop(inode)); 1022719a2514SYan, Zheng __ceph_touch_fmode(ci, mdsc, cap_fmode); 1023719a2514SYan, Zheng } 1024719a2514SYan, Zheng 1025355da1ebSSage Weil spin_unlock(&ci->i_ceph_lock); 1026355da1ebSSage Weil 102731c542a1SYan, Zheng if (fill_inline) 102801deead0SYan, Zheng ceph_fill_inline_data(inode, locked_page, 102931c542a1SYan, Zheng iinfo->inline_data, iinfo->inline_len); 103031c542a1SYan, Zheng 1031d9df2783SYan, Zheng if (wake) 1032d9df2783SYan, Zheng wake_up_all(&ci->i_cap_wq); 1033d9df2783SYan, Zheng 1034355da1ebSSage Weil /* queue truncate if we saw i_size decrease */ 1035355da1ebSSage Weil if (queue_trunc) 1036355da1ebSSage Weil ceph_queue_vmtruncate(inode); 1037355da1ebSSage Weil 1038355da1ebSSage Weil /* populate frag tree */ 10393e7fbe9cSYan, Zheng if (S_ISDIR(inode->i_mode)) 10403e7fbe9cSYan, Zheng ceph_fill_fragtree(inode, &info->fragtree, dirinfo); 1041355da1ebSSage Weil 1042355da1ebSSage Weil /* update delegation info? */ 1043355da1ebSSage Weil if (dirinfo) 1044355da1ebSSage Weil ceph_fill_dirfrag(inode, dirinfo); 1045355da1ebSSage Weil 1046355da1ebSSage Weil err = 0; 1047355da1ebSSage Weil out: 1048d9df2783SYan, Zheng if (new_cap) 1049d9df2783SYan, Zheng ceph_put_cap(mdsc, new_cap); 1050af8a85a4SLuis Henriques ceph_buffer_put(old_blob); 1051355da1ebSSage Weil ceph_buffer_put(xattr_blob); 1052779fe0fbSYan, Zheng ceph_put_string(pool_ns); 1053355da1ebSSage Weil return err; 1054355da1ebSSage Weil } 1055355da1ebSSage Weil 1056355da1ebSSage Weil /* 1057543212b3SYan, Zheng * caller should hold session s_mutex and dentry->d_lock. 1058355da1ebSSage Weil */ 1059543212b3SYan, Zheng static void __update_dentry_lease(struct inode *dir, struct dentry *dentry, 1060355da1ebSSage Weil struct ceph_mds_reply_lease *lease, 1061355da1ebSSage Weil struct ceph_mds_session *session, 1062f5d55f03SJeff Layton unsigned long from_time, 1063543212b3SYan, Zheng struct ceph_mds_session **old_lease_session) 1064355da1ebSSage Weil { 1065355da1ebSSage Weil struct ceph_dentry_info *di = ceph_dentry(dentry); 1066f5e17aedSJeff Layton unsigned mask = le16_to_cpu(lease->mask); 1067355da1ebSSage Weil long unsigned duration = le32_to_cpu(lease->duration_ms); 1068355da1ebSSage Weil long unsigned ttl = from_time + (duration * HZ) / 1000; 1069355da1ebSSage Weil long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; 1070355da1ebSSage Weil 10712f90b852SSage Weil dout("update_dentry_lease %p duration %lu ms ttl %lu\n", 10722f90b852SSage Weil dentry, duration, ttl); 1073355da1ebSSage Weil 107418fc8abdSAl Viro /* only track leases on regular dentries */ 107518fc8abdSAl Viro if (ceph_snap(dir) != CEPH_NOSNAP) 1076543212b3SYan, Zheng return; 107718fc8abdSAl Viro 1078f5e17aedSJeff Layton if (mask & CEPH_LEASE_PRIMARY_LINK) 1079f5e17aedSJeff Layton di->flags |= CEPH_DENTRY_PRIMARY_LINK; 1080f5e17aedSJeff Layton else 1081f5e17aedSJeff Layton di->flags &= ~CEPH_DENTRY_PRIMARY_LINK; 1082f5e17aedSJeff Layton 108397aeb6bfSYan, Zheng di->lease_shared_gen = atomic_read(&ceph_inode(dir)->i_shared_gen); 1084f5e17aedSJeff Layton if (!(mask & CEPH_LEASE_VALID)) { 108537c4efc1SYan, Zheng __ceph_dentry_dir_lease_touch(di); 1086543212b3SYan, Zheng return; 108737c4efc1SYan, Zheng } 1088355da1ebSSage Weil 1089355da1ebSSage Weil if (di->lease_gen == session->s_cap_gen && 10909b16f03cSMiklos Szeredi time_before(ttl, di->time)) 1091543212b3SYan, Zheng return; /* we already have a newer lease. */ 1092355da1ebSSage Weil 1093481f001fSYan, Zheng if (di->lease_session && di->lease_session != session) { 1094543212b3SYan, Zheng *old_lease_session = di->lease_session; 1095481f001fSYan, Zheng di->lease_session = NULL; 1096481f001fSYan, Zheng } 1097355da1ebSSage Weil 1098355da1ebSSage Weil if (!di->lease_session) 1099355da1ebSSage Weil di->lease_session = ceph_get_mds_session(session); 1100355da1ebSSage Weil di->lease_gen = session->s_cap_gen; 1101355da1ebSSage Weil di->lease_seq = le32_to_cpu(lease->seq); 1102355da1ebSSage Weil di->lease_renew_after = half_ttl; 1103355da1ebSSage Weil di->lease_renew_from = 0; 11049b16f03cSMiklos Szeredi di->time = ttl; 110537c4efc1SYan, Zheng 110637c4efc1SYan, Zheng __ceph_dentry_lease_touch(di); 1107543212b3SYan, Zheng } 1108543212b3SYan, Zheng 1109543212b3SYan, Zheng static inline void update_dentry_lease(struct inode *dir, struct dentry *dentry, 1110543212b3SYan, Zheng struct ceph_mds_reply_lease *lease, 1111543212b3SYan, Zheng struct ceph_mds_session *session, 1112543212b3SYan, Zheng unsigned long from_time) 1113543212b3SYan, Zheng { 1114543212b3SYan, Zheng struct ceph_mds_session *old_lease_session = NULL; 1115543212b3SYan, Zheng spin_lock(&dentry->d_lock); 1116543212b3SYan, Zheng __update_dentry_lease(dir, dentry, lease, session, from_time, 1117543212b3SYan, Zheng &old_lease_session); 1118543212b3SYan, Zheng spin_unlock(&dentry->d_lock); 1119543212b3SYan, Zheng if (old_lease_session) 1120543212b3SYan, Zheng ceph_put_mds_session(old_lease_session); 1121543212b3SYan, Zheng } 1122543212b3SYan, Zheng 1123543212b3SYan, Zheng /* 1124543212b3SYan, Zheng * update dentry lease without having parent inode locked 1125543212b3SYan, Zheng */ 1126543212b3SYan, Zheng static void update_dentry_lease_careful(struct dentry *dentry, 1127543212b3SYan, Zheng struct ceph_mds_reply_lease *lease, 1128543212b3SYan, Zheng struct ceph_mds_session *session, 1129543212b3SYan, Zheng unsigned long from_time, 1130543212b3SYan, Zheng char *dname, u32 dname_len, 1131543212b3SYan, Zheng struct ceph_vino *pdvino, 1132543212b3SYan, Zheng struct ceph_vino *ptvino) 1133543212b3SYan, Zheng 1134543212b3SYan, Zheng { 1135543212b3SYan, Zheng struct inode *dir; 1136543212b3SYan, Zheng struct ceph_mds_session *old_lease_session = NULL; 1137543212b3SYan, Zheng 1138543212b3SYan, Zheng spin_lock(&dentry->d_lock); 1139543212b3SYan, Zheng /* make sure dentry's name matches target */ 1140543212b3SYan, Zheng if (dentry->d_name.len != dname_len || 1141543212b3SYan, Zheng memcmp(dentry->d_name.name, dname, dname_len)) 1142543212b3SYan, Zheng goto out_unlock; 1143543212b3SYan, Zheng 1144543212b3SYan, Zheng dir = d_inode(dentry->d_parent); 1145543212b3SYan, Zheng /* make sure parent matches dvino */ 1146543212b3SYan, Zheng if (!ceph_ino_compare(dir, pdvino)) 1147543212b3SYan, Zheng goto out_unlock; 1148543212b3SYan, Zheng 1149543212b3SYan, Zheng /* make sure dentry's inode matches target. NULL ptvino means that 1150543212b3SYan, Zheng * we expect a negative dentry */ 1151543212b3SYan, Zheng if (ptvino) { 1152543212b3SYan, Zheng if (d_really_is_negative(dentry)) 1153543212b3SYan, Zheng goto out_unlock; 1154543212b3SYan, Zheng if (!ceph_ino_compare(d_inode(dentry), ptvino)) 1155543212b3SYan, Zheng goto out_unlock; 1156543212b3SYan, Zheng } else { 1157543212b3SYan, Zheng if (d_really_is_positive(dentry)) 1158543212b3SYan, Zheng goto out_unlock; 1159543212b3SYan, Zheng } 1160543212b3SYan, Zheng 1161543212b3SYan, Zheng __update_dentry_lease(dir, dentry, lease, session, 1162543212b3SYan, Zheng from_time, &old_lease_session); 1163355da1ebSSage Weil out_unlock: 1164355da1ebSSage Weil spin_unlock(&dentry->d_lock); 1165481f001fSYan, Zheng if (old_lease_session) 1166481f001fSYan, Zheng ceph_put_mds_session(old_lease_session); 1167355da1ebSSage Weil } 1168355da1ebSSage Weil 1169355da1ebSSage Weil /* 11701cd3935bSSage Weil * splice a dentry to an inode. 11711cd3935bSSage Weil * caller must hold directory i_mutex for this to be safe. 11721cd3935bSSage Weil */ 11732bf996acSYan, Zheng static int splice_dentry(struct dentry **pdn, struct inode *in) 11741cd3935bSSage Weil { 11752bf996acSYan, Zheng struct dentry *dn = *pdn; 11761cd3935bSSage Weil struct dentry *realdn; 11771cd3935bSSage Weil 11782b0143b5SDavid Howells BUG_ON(d_inode(dn)); 11791cd3935bSSage Weil 11805495c2d0SYan, Zheng if (S_ISDIR(in->i_mode)) { 11815495c2d0SYan, Zheng /* If inode is directory, d_splice_alias() below will remove 11825495c2d0SYan, Zheng * 'realdn' from its origin parent. We need to ensure that 11835495c2d0SYan, Zheng * origin parent's readdir cache will not reference 'realdn' 11845495c2d0SYan, Zheng */ 11855495c2d0SYan, Zheng realdn = d_find_any_alias(in); 11865495c2d0SYan, Zheng if (realdn) { 11875495c2d0SYan, Zheng struct ceph_dentry_info *di = ceph_dentry(realdn); 11885495c2d0SYan, Zheng spin_lock(&realdn->d_lock); 11895495c2d0SYan, Zheng 11905495c2d0SYan, Zheng realdn->d_op->d_prune(realdn); 11915495c2d0SYan, Zheng 11925495c2d0SYan, Zheng di->time = jiffies; 11935495c2d0SYan, Zheng di->lease_shared_gen = 0; 11945495c2d0SYan, Zheng di->offset = 0; 11955495c2d0SYan, Zheng 11965495c2d0SYan, Zheng spin_unlock(&realdn->d_lock); 11975495c2d0SYan, Zheng dput(realdn); 11985495c2d0SYan, Zheng } 11995495c2d0SYan, Zheng } 12005495c2d0SYan, Zheng 12011cd3935bSSage Weil /* dn must be unhashed */ 12021cd3935bSSage Weil if (!d_unhashed(dn)) 12031cd3935bSSage Weil d_drop(dn); 120441d28bcaSAl Viro realdn = d_splice_alias(in, dn); 12051cd3935bSSage Weil if (IS_ERR(realdn)) { 1206d69ed05aSSage Weil pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", 1207d69ed05aSSage Weil PTR_ERR(realdn), dn, in, ceph_vinop(in)); 12082bf996acSYan, Zheng return PTR_ERR(realdn); 12092bf996acSYan, Zheng } 12102bf996acSYan, Zheng 12112bf996acSYan, Zheng if (realdn) { 12121cd3935bSSage Weil dout("dn %p (%d) spliced with %p (%d) " 12131cd3935bSSage Weil "inode %p ino %llx.%llx\n", 121484d08fa8SAl Viro dn, d_count(dn), 121584d08fa8SAl Viro realdn, d_count(realdn), 12162b0143b5SDavid Howells d_inode(realdn), ceph_vinop(d_inode(realdn))); 12171cd3935bSSage Weil dput(dn); 12182bf996acSYan, Zheng *pdn = realdn; 12191cd3935bSSage Weil } else { 12201cd3935bSSage Weil BUG_ON(!ceph_dentry(dn)); 12211cd3935bSSage Weil dout("dn %p attached to %p ino %llx.%llx\n", 12222b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn))); 12231cd3935bSSage Weil } 12242bf996acSYan, Zheng return 0; 12251cd3935bSSage Weil } 12261cd3935bSSage Weil 12271cd3935bSSage Weil /* 1228355da1ebSSage Weil * Incorporate results into the local cache. This is either just 1229355da1ebSSage Weil * one inode, or a directory, dentry, and possibly linked-to inode (e.g., 1230355da1ebSSage Weil * after a lookup). 1231355da1ebSSage Weil * 1232355da1ebSSage Weil * A reply may contain 1233355da1ebSSage Weil * a directory inode along with a dentry. 1234355da1ebSSage Weil * and/or a target inode 1235355da1ebSSage Weil * 1236355da1ebSSage Weil * Called with snap_rwsem (read). 1237355da1ebSSage Weil */ 1238f5a03b08SJeff Layton int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req) 1239355da1ebSSage Weil { 1240f5a03b08SJeff Layton struct ceph_mds_session *session = req->r_session; 1241355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1242355da1ebSSage Weil struct inode *in = NULL; 1243f5d55f03SJeff Layton struct ceph_vino tvino, dvino; 12443d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(sb); 1245355da1ebSSage Weil int err = 0; 1246355da1ebSSage Weil 1247355da1ebSSage Weil dout("fill_trace %p is_dentry %d is_target %d\n", req, 1248355da1ebSSage Weil rinfo->head->is_dentry, rinfo->head->is_target); 1249355da1ebSSage Weil 1250355da1ebSSage Weil if (!rinfo->head->is_target && !rinfo->head->is_dentry) { 1251355da1ebSSage Weil dout("fill_trace reply is empty!\n"); 12523dd69aabSJeff Layton if (rinfo->head->result == 0 && req->r_parent) 1253167c9e35SSage Weil ceph_invalidate_dir_request(req); 1254355da1ebSSage Weil return 0; 1255355da1ebSSage Weil } 1256355da1ebSSage Weil 1257355da1ebSSage Weil if (rinfo->head->is_dentry) { 12583dd69aabSJeff Layton struct inode *dir = req->r_parent; 12595b1daecdSSage Weil 12606c5e50faSSage Weil if (dir) { 1261966c7160SJeff Layton err = ceph_fill_inode(dir, NULL, &rinfo->diri, 1262966c7160SJeff Layton rinfo->dirfrag, session, -1, 12635b1daecdSSage Weil &req->r_caps_reservation); 12645b1daecdSSage Weil if (err < 0) 126519913b4eSYan, Zheng goto done; 12666c5e50faSSage Weil } else { 12676c5e50faSSage Weil WARN_ON_ONCE(1); 12686c5e50faSSage Weil } 126919913b4eSYan, Zheng 127074c9e6bfSYan, Zheng if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME && 127174c9e6bfSYan, Zheng test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 127274c9e6bfSYan, Zheng !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { 127319913b4eSYan, Zheng struct qstr dname; 127419913b4eSYan, Zheng struct dentry *dn, *parent; 127519913b4eSYan, Zheng 127619913b4eSYan, Zheng BUG_ON(!rinfo->head->is_target); 127719913b4eSYan, Zheng BUG_ON(req->r_dentry); 127819913b4eSYan, Zheng 127919913b4eSYan, Zheng parent = d_find_any_alias(dir); 128019913b4eSYan, Zheng BUG_ON(!parent); 128119913b4eSYan, Zheng 128219913b4eSYan, Zheng dname.name = rinfo->dname; 128319913b4eSYan, Zheng dname.len = rinfo->dname_len; 12848387ff25SLinus Torvalds dname.hash = full_name_hash(parent, dname.name, dname.len); 1285f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1286f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 128719913b4eSYan, Zheng retry_lookup: 128819913b4eSYan, Zheng dn = d_lookup(parent, &dname); 128919913b4eSYan, Zheng dout("d_lookup on parent=%p name=%.*s got %p\n", 129019913b4eSYan, Zheng parent, dname.len, dname.name, dn); 129119913b4eSYan, Zheng 129219913b4eSYan, Zheng if (!dn) { 129319913b4eSYan, Zheng dn = d_alloc(parent, &dname); 129419913b4eSYan, Zheng dout("d_alloc %p '%.*s' = %p\n", parent, 129519913b4eSYan, Zheng dname.len, dname.name, dn); 1296d37b1d99SMarkus Elfring if (!dn) { 129719913b4eSYan, Zheng dput(parent); 129819913b4eSYan, Zheng err = -ENOMEM; 129919913b4eSYan, Zheng goto done; 130019913b4eSYan, Zheng } 1301ad5cb123SAl Viro err = 0; 13022b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 1303f5d55f03SJeff Layton (ceph_ino(d_inode(dn)) != tvino.ino || 1304f5d55f03SJeff Layton ceph_snap(d_inode(dn)) != tvino.snap)) { 130519913b4eSYan, Zheng dout(" dn %p points to wrong inode %p\n", 13062b0143b5SDavid Howells dn, d_inode(dn)); 1307933ad2c9SYan, Zheng ceph_dir_clear_ordered(dir); 130819913b4eSYan, Zheng d_delete(dn); 130919913b4eSYan, Zheng dput(dn); 131019913b4eSYan, Zheng goto retry_lookup; 131119913b4eSYan, Zheng } 131219913b4eSYan, Zheng 131319913b4eSYan, Zheng req->r_dentry = dn; 131419913b4eSYan, Zheng dput(parent); 131519913b4eSYan, Zheng } 13165b1daecdSSage Weil } 13175b1daecdSSage Weil 131886b58d13SYan, Zheng if (rinfo->head->is_target) { 1319bca9fc14SJeff Layton /* Should be filled in by handle_reply */ 1320bca9fc14SJeff Layton BUG_ON(!req->r_target_inode); 132186b58d13SYan, Zheng 1322bca9fc14SJeff Layton in = req->r_target_inode; 1323966c7160SJeff Layton err = ceph_fill_inode(in, req->r_locked_page, &rinfo->targeti, 1324966c7160SJeff Layton NULL, session, 1325bc2de10dSJeff Layton (!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && 13263bb48b41SJeff Layton !test_bit(CEPH_MDS_R_ASYNC, &req->r_req_flags) && 1327bc2de10dSJeff Layton rinfo->head->result == 0) ? req->r_fmode : -1, 132886b58d13SYan, Zheng &req->r_caps_reservation); 132986b58d13SYan, Zheng if (err < 0) { 1330966c7160SJeff Layton pr_err("ceph_fill_inode badness %p %llx.%llx\n", 133186b58d13SYan, Zheng in, ceph_vinop(in)); 1332bca9fc14SJeff Layton req->r_target_inode = NULL; 1333893e456bSJeff Layton if (in->i_state & I_NEW) 1334893e456bSJeff Layton discard_new_inode(in); 133568cbb805SJeff Layton else 133668cbb805SJeff Layton iput(in); 133786b58d13SYan, Zheng goto done; 133886b58d13SYan, Zheng } 1339893e456bSJeff Layton if (in->i_state & I_NEW) 1340893e456bSJeff Layton unlock_new_inode(in); 134186b58d13SYan, Zheng } 134286b58d13SYan, Zheng 13439358c6d4SSage Weil /* 13449358c6d4SSage Weil * ignore null lease/binding on snapdir ENOENT, or else we 13459358c6d4SSage Weil * will have trouble splicing in the virtual snapdir later 13469358c6d4SSage Weil */ 13473dd69aabSJeff Layton if (rinfo->head->is_dentry && 1348bc2de10dSJeff Layton !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && 13493dd69aabSJeff Layton test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 13509358c6d4SSage Weil (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, 13513d14c5d2SYehuda Sadeh fsc->mount_options->snapdir_name, 13529358c6d4SSage Weil req->r_dentry->d_name.len))) { 1353355da1ebSSage Weil /* 1354355da1ebSSage Weil * lookup link rename : null -> possibly existing inode 1355355da1ebSSage Weil * mknod symlink mkdir : null -> new inode 1356355da1ebSSage Weil * unlink : linked -> null 1357355da1ebSSage Weil */ 13583dd69aabSJeff Layton struct inode *dir = req->r_parent; 1359355da1ebSSage Weil struct dentry *dn = req->r_dentry; 1360355da1ebSSage Weil bool have_dir_cap, have_lease; 1361355da1ebSSage Weil 1362355da1ebSSage Weil BUG_ON(!dn); 1363355da1ebSSage Weil BUG_ON(!dir); 13642b0143b5SDavid Howells BUG_ON(d_inode(dn->d_parent) != dir); 1365f5d55f03SJeff Layton 1366f5d55f03SJeff Layton dvino.ino = le64_to_cpu(rinfo->diri.in->ino); 1367f5d55f03SJeff Layton dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); 1368f5d55f03SJeff Layton 1369f5d55f03SJeff Layton BUG_ON(ceph_ino(dir) != dvino.ino); 1370f5d55f03SJeff Layton BUG_ON(ceph_snap(dir) != dvino.snap); 1371355da1ebSSage Weil 1372355da1ebSSage Weil /* do we have a lease on the whole dir? */ 1373355da1ebSSage Weil have_dir_cap = 1374355da1ebSSage Weil (le32_to_cpu(rinfo->diri.in->cap.caps) & 1375355da1ebSSage Weil CEPH_CAP_FILE_SHARED); 1376355da1ebSSage Weil 1377355da1ebSSage Weil /* do we have a dn lease? */ 1378355da1ebSSage Weil have_lease = have_dir_cap || 13792f90b852SSage Weil le32_to_cpu(rinfo->dlease->duration_ms); 1380355da1ebSSage Weil if (!have_lease) 1381355da1ebSSage Weil dout("fill_trace no dentry lease or dir cap\n"); 1382355da1ebSSage Weil 1383355da1ebSSage Weil /* rename? */ 1384355da1ebSSage Weil if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { 13850a8a70f9SYan, Zheng struct inode *olddir = req->r_old_dentry_dir; 13860a8a70f9SYan, Zheng BUG_ON(!olddir); 13870a8a70f9SYan, Zheng 1388a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1389355da1ebSSage Weil req->r_old_dentry, 1390a455589fSAl Viro req->r_old_dentry, 1391a455589fSAl Viro dn, dn); 1392355da1ebSSage Weil dout("fill_trace doing d_move %p -> %p\n", 1393355da1ebSSage Weil req->r_old_dentry, dn); 1394c10f5e12SSage Weil 1395fdd4e158SYan, Zheng /* d_move screws up sibling dentries' offsets */ 1396fdd4e158SYan, Zheng ceph_dir_clear_ordered(dir); 1397fdd4e158SYan, Zheng ceph_dir_clear_ordered(olddir); 1398fdd4e158SYan, Zheng 1399355da1ebSSage Weil d_move(req->r_old_dentry, dn); 1400a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1401355da1ebSSage Weil req->r_old_dentry, 1402a455589fSAl Viro req->r_old_dentry, 1403a455589fSAl Viro dn, dn); 140481a6cf2dSSage Weil 1405c4a29f26SSage Weil /* ensure target dentry is invalidated, despite 1406c4a29f26SSage Weil rehashing bug in vfs_rename_dir */ 140781a6cf2dSSage Weil ceph_invalidate_dentry_lease(dn); 140881a6cf2dSSage Weil 140909adc80cSSage Weil dout("dn %p gets new offset %lld\n", req->r_old_dentry, 14101cd3935bSSage Weil ceph_dentry(req->r_old_dentry)->offset); 141181a6cf2dSSage Weil 14122bf996acSYan, Zheng /* swap r_dentry and r_old_dentry in case that 14132bf996acSYan, Zheng * splice_dentry() gets called later. This is safe 14142bf996acSYan, Zheng * because no other place will use them */ 14152bf996acSYan, Zheng req->r_dentry = req->r_old_dentry; 14162bf996acSYan, Zheng req->r_old_dentry = dn; 14172bf996acSYan, Zheng dn = req->r_dentry; 1418355da1ebSSage Weil } 1419355da1ebSSage Weil 1420355da1ebSSage Weil /* null dentry? */ 1421355da1ebSSage Weil if (!rinfo->head->is_target) { 1422355da1ebSSage Weil dout("fill_trace null dentry\n"); 14232b0143b5SDavid Howells if (d_really_is_positive(dn)) { 1424355da1ebSSage Weil dout("d_delete %p\n", dn); 14255495c2d0SYan, Zheng ceph_dir_clear_ordered(dir); 1426355da1ebSSage Weil d_delete(dn); 142780d025ffSJeff Layton } else if (have_lease) { 142880d025ffSJeff Layton if (d_unhashed(dn)) 1429f8b31710SAl Viro d_add(dn, NULL); 1430543212b3SYan, Zheng update_dentry_lease(dir, dn, 1431543212b3SYan, Zheng rinfo->dlease, session, 1432543212b3SYan, Zheng req->r_request_started); 1433355da1ebSSage Weil } 1434355da1ebSSage Weil goto done; 1435355da1ebSSage Weil } 1436355da1ebSSage Weil 1437355da1ebSSage Weil /* attach proper inode */ 14382b0143b5SDavid Howells if (d_really_is_negative(dn)) { 143970db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 144086b58d13SYan, Zheng ihold(in); 14412bf996acSYan, Zheng err = splice_dentry(&req->r_dentry, in); 14422bf996acSYan, Zheng if (err < 0) 1443355da1ebSSage Weil goto done; 14442bf996acSYan, Zheng dn = req->r_dentry; /* may have spliced */ 14452b0143b5SDavid Howells } else if (d_really_is_positive(dn) && d_inode(dn) != in) { 1446355da1ebSSage Weil dout(" %p links to %p %llx.%llx, not %llx.%llx\n", 14472b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn)), 144886b58d13SYan, Zheng ceph_vinop(in)); 1449200fd27cSYan, Zheng d_invalidate(dn); 1450355da1ebSSage Weil have_lease = false; 1451355da1ebSSage Weil } 1452355da1ebSSage Weil 1453f5d55f03SJeff Layton if (have_lease) { 1454543212b3SYan, Zheng update_dentry_lease(dir, dn, 1455543212b3SYan, Zheng rinfo->dlease, session, 1456543212b3SYan, Zheng req->r_request_started); 1457f5d55f03SJeff Layton } 1458355da1ebSSage Weil dout(" final dn %p\n", dn); 1459bc2de10dSJeff Layton } else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP || 1460bc2de10dSJeff Layton req->r_op == CEPH_MDS_OP_MKSNAP) && 14611f08529cSAl Viro test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 1462bc2de10dSJeff Layton !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { 14633dd69aabSJeff Layton struct inode *dir = req->r_parent; 1464355da1ebSSage Weil 1465355da1ebSSage Weil /* fill out a snapdir LOOKUPSNAP dentry */ 14660a8a70f9SYan, Zheng BUG_ON(!dir); 14670a8a70f9SYan, Zheng BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); 14682bf996acSYan, Zheng BUG_ON(!req->r_dentry); 14692bf996acSYan, Zheng dout(" linking snapped dir %p to dn %p\n", in, req->r_dentry); 147070db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 147186b58d13SYan, Zheng ihold(in); 14722bf996acSYan, Zheng err = splice_dentry(&req->r_dentry, in); 14732bf996acSYan, Zheng if (err < 0) 1474355da1ebSSage Weil goto done; 1475543212b3SYan, Zheng } else if (rinfo->head->is_dentry && req->r_dentry) { 1476543212b3SYan, Zheng /* parent inode is not locked, be carefull */ 1477cdde7c43SJeff Layton struct ceph_vino *ptvino = NULL; 1478cdde7c43SJeff Layton dvino.ino = le64_to_cpu(rinfo->diri.in->ino); 1479cdde7c43SJeff Layton dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); 1480cdde7c43SJeff Layton if (rinfo->head->is_target) { 1481cdde7c43SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1482cdde7c43SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 1483cdde7c43SJeff Layton ptvino = &tvino; 1484cdde7c43SJeff Layton } 1485543212b3SYan, Zheng update_dentry_lease_careful(req->r_dentry, rinfo->dlease, 1486543212b3SYan, Zheng session, req->r_request_started, 1487543212b3SYan, Zheng rinfo->dname, rinfo->dname_len, 1488543212b3SYan, Zheng &dvino, ptvino); 1489355da1ebSSage Weil } 1490355da1ebSSage Weil done: 1491355da1ebSSage Weil dout("fill_trace done err=%d\n", err); 1492355da1ebSSage Weil return err; 1493355da1ebSSage Weil } 1494355da1ebSSage Weil 1495355da1ebSSage Weil /* 1496355da1ebSSage Weil * Prepopulate our cache with readdir results, leases, etc. 1497355da1ebSSage Weil */ 149879f9f99aSSage Weil static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, 149979f9f99aSSage Weil struct ceph_mds_session *session) 150079f9f99aSSage Weil { 150179f9f99aSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 150279f9f99aSSage Weil int i, err = 0; 150379f9f99aSSage Weil 150479f9f99aSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 15052a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 150679f9f99aSSage Weil struct ceph_vino vino; 150779f9f99aSSage Weil struct inode *in; 150879f9f99aSSage Weil int rc; 150979f9f99aSSage Weil 15102a5beea3SYan, Zheng vino.ino = le64_to_cpu(rde->inode.in->ino); 15112a5beea3SYan, Zheng vino.snap = le64_to_cpu(rde->inode.in->snapid); 151279f9f99aSSage Weil 151379f9f99aSSage Weil in = ceph_get_inode(req->r_dentry->d_sb, vino); 151479f9f99aSSage Weil if (IS_ERR(in)) { 151579f9f99aSSage Weil err = PTR_ERR(in); 151679f9f99aSSage Weil dout("new_inode badness got %d\n", err); 151779f9f99aSSage Weil continue; 151879f9f99aSSage Weil } 1519966c7160SJeff Layton rc = ceph_fill_inode(in, NULL, &rde->inode, NULL, session, 152057c21994SJeff Layton -1, &req->r_caps_reservation); 152179f9f99aSSage Weil if (rc < 0) { 1522966c7160SJeff Layton pr_err("ceph_fill_inode badness on %p got %d\n", 1523966c7160SJeff Layton in, rc); 152479f9f99aSSage Weil err = rc; 1525893e456bSJeff Layton if (in->i_state & I_NEW) { 1526893e456bSJeff Layton ihold(in); 1527893e456bSJeff Layton discard_new_inode(in); 152879f9f99aSSage Weil } 1529893e456bSJeff Layton } else if (in->i_state & I_NEW) { 1530893e456bSJeff Layton unlock_new_inode(in); 1531893e456bSJeff Layton } 1532893e456bSJeff Layton 15333e1d0452SYan, Zheng /* avoid calling iput_final() in mds dispatch threads */ 15343e1d0452SYan, Zheng ceph_async_iput(in); 153579f9f99aSSage Weil } 153679f9f99aSSage Weil 153779f9f99aSSage Weil return err; 153879f9f99aSSage Weil } 153979f9f99aSSage Weil 1540fdd4e158SYan, Zheng void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) 1541fdd4e158SYan, Zheng { 1542fdd4e158SYan, Zheng if (ctl->page) { 1543fdd4e158SYan, Zheng kunmap(ctl->page); 154409cbfeafSKirill A. Shutemov put_page(ctl->page); 1545fdd4e158SYan, Zheng ctl->page = NULL; 1546fdd4e158SYan, Zheng } 1547fdd4e158SYan, Zheng } 1548fdd4e158SYan, Zheng 1549fdd4e158SYan, Zheng static int fill_readdir_cache(struct inode *dir, struct dentry *dn, 1550fdd4e158SYan, Zheng struct ceph_readdir_cache_control *ctl, 1551fdd4e158SYan, Zheng struct ceph_mds_request *req) 1552fdd4e158SYan, Zheng { 1553fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(dir); 155409cbfeafSKirill A. Shutemov unsigned nsize = PAGE_SIZE / sizeof(struct dentry*); 1555fdd4e158SYan, Zheng unsigned idx = ctl->index % nsize; 1556fdd4e158SYan, Zheng pgoff_t pgoff = ctl->index / nsize; 1557fdd4e158SYan, Zheng 1558fdd4e158SYan, Zheng if (!ctl->page || pgoff != page_index(ctl->page)) { 1559fdd4e158SYan, Zheng ceph_readdir_cache_release(ctl); 1560af5e5eb5SYan, Zheng if (idx == 0) 1561fdd4e158SYan, Zheng ctl->page = grab_cache_page(&dir->i_data, pgoff); 1562af5e5eb5SYan, Zheng else 1563af5e5eb5SYan, Zheng ctl->page = find_lock_page(&dir->i_data, pgoff); 1564fdd4e158SYan, Zheng if (!ctl->page) { 1565fdd4e158SYan, Zheng ctl->index = -1; 1566af5e5eb5SYan, Zheng return idx == 0 ? -ENOMEM : 0; 1567fdd4e158SYan, Zheng } 1568fdd4e158SYan, Zheng /* reading/filling the cache are serialized by 1569fdd4e158SYan, Zheng * i_mutex, no need to use page lock */ 1570fdd4e158SYan, Zheng unlock_page(ctl->page); 1571fdd4e158SYan, Zheng ctl->dentries = kmap(ctl->page); 1572af5e5eb5SYan, Zheng if (idx == 0) 157309cbfeafSKirill A. Shutemov memset(ctl->dentries, 0, PAGE_SIZE); 1574fdd4e158SYan, Zheng } 1575fdd4e158SYan, Zheng 1576fdd4e158SYan, Zheng if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && 1577fdd4e158SYan, Zheng req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { 1578fdd4e158SYan, Zheng dout("readdir cache dn %p idx %d\n", dn, ctl->index); 1579fdd4e158SYan, Zheng ctl->dentries[idx] = dn; 1580fdd4e158SYan, Zheng ctl->index++; 1581fdd4e158SYan, Zheng } else { 1582fdd4e158SYan, Zheng dout("disable readdir cache\n"); 1583fdd4e158SYan, Zheng ctl->index = -1; 1584fdd4e158SYan, Zheng } 1585fdd4e158SYan, Zheng return 0; 1586fdd4e158SYan, Zheng } 1587fdd4e158SYan, Zheng 1588355da1ebSSage Weil int ceph_readdir_prepopulate(struct ceph_mds_request *req, 1589355da1ebSSage Weil struct ceph_mds_session *session) 1590355da1ebSSage Weil { 1591355da1ebSSage Weil struct dentry *parent = req->r_dentry; 1592f3c4ebe6SYan, Zheng struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); 1593355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1594355da1ebSSage Weil struct qstr dname; 1595355da1ebSSage Weil struct dentry *dn; 1596355da1ebSSage Weil struct inode *in; 1597315f2408SYan, Zheng int err = 0, skipped = 0, ret, i; 15980f51a983SJeff Layton u32 frag = le32_to_cpu(req->r_args.readdir.frag); 1599f3c4ebe6SYan, Zheng u32 last_hash = 0; 1600f3c4ebe6SYan, Zheng u32 fpos_offset; 1601fdd4e158SYan, Zheng struct ceph_readdir_cache_control cache_ctl = {}; 1602fdd4e158SYan, Zheng 1603bc2de10dSJeff Layton if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) 1604fdd4e158SYan, Zheng return readdir_prepopulate_inodes_only(req, session); 160581c6aea5SYan, Zheng 160679162547SYan, Zheng if (rinfo->hash_order) { 160779162547SYan, Zheng if (req->r_path2) { 1608f3c4ebe6SYan, Zheng last_hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 160979162547SYan, Zheng req->r_path2, 161079162547SYan, Zheng strlen(req->r_path2)); 1611f3c4ebe6SYan, Zheng last_hash = ceph_frag_value(last_hash); 161279162547SYan, Zheng } else if (rinfo->offset_hash) { 161379162547SYan, Zheng /* mds understands offset_hash */ 161479162547SYan, Zheng WARN_ON_ONCE(req->r_readdir_offset != 2); 16150f51a983SJeff Layton last_hash = le32_to_cpu(req->r_args.readdir.offset_hash); 161679162547SYan, Zheng } 1617f3c4ebe6SYan, Zheng } 1618f3c4ebe6SYan, Zheng 161981c6aea5SYan, Zheng if (rinfo->dir_dir && 162081c6aea5SYan, Zheng le32_to_cpu(rinfo->dir_dir->frag) != frag) { 162181c6aea5SYan, Zheng dout("readdir_prepopulate got new frag %x -> %x\n", 162281c6aea5SYan, Zheng frag, le32_to_cpu(rinfo->dir_dir->frag)); 162381c6aea5SYan, Zheng frag = le32_to_cpu(rinfo->dir_dir->frag); 1624f3c4ebe6SYan, Zheng if (!rinfo->hash_order) 1625fdd4e158SYan, Zheng req->r_readdir_offset = 2; 162681c6aea5SYan, Zheng } 1627355da1ebSSage Weil 1628355da1ebSSage Weil if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { 1629355da1ebSSage Weil dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", 1630355da1ebSSage Weil rinfo->dir_nr, parent); 1631355da1ebSSage Weil } else { 1632355da1ebSSage Weil dout("readdir_prepopulate %d items under dn %p\n", 1633355da1ebSSage Weil rinfo->dir_nr, parent); 1634355da1ebSSage Weil if (rinfo->dir_dir) 16352b0143b5SDavid Howells ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); 1636355da1ebSSage Weil 16378d45b911SYan, Zheng if (ceph_frag_is_leftmost(frag) && 16388d45b911SYan, Zheng req->r_readdir_offset == 2 && 163979162547SYan, Zheng !(rinfo->hash_order && last_hash)) { 16408d45b911SYan, Zheng /* note dir version at start of readdir so we can 16418d45b911SYan, Zheng * tell if any dentries get dropped */ 16428d45b911SYan, Zheng req->r_dir_release_cnt = 16438d45b911SYan, Zheng atomic64_read(&ci->i_release_count); 16448d45b911SYan, Zheng req->r_dir_ordered_cnt = 16458d45b911SYan, Zheng atomic64_read(&ci->i_ordered_count); 1646fdd4e158SYan, Zheng req->r_readdir_cache_idx = 0; 1647fdd4e158SYan, Zheng } 16488d45b911SYan, Zheng } 1649fdd4e158SYan, Zheng 1650fdd4e158SYan, Zheng cache_ctl.index = req->r_readdir_cache_idx; 1651f3c4ebe6SYan, Zheng fpos_offset = req->r_readdir_offset; 1652fdd4e158SYan, Zheng 165386b58d13SYan, Zheng /* FIXME: release caps/leases if error occurs */ 1654355da1ebSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 16552a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 1656543212b3SYan, Zheng struct ceph_vino tvino; 1657355da1ebSSage Weil 16582a5beea3SYan, Zheng dname.name = rde->name; 16592a5beea3SYan, Zheng dname.len = rde->name_len; 16608387ff25SLinus Torvalds dname.hash = full_name_hash(parent, dname.name, dname.len); 1661355da1ebSSage Weil 1662f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rde->inode.in->ino); 1663f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rde->inode.in->snapid); 1664355da1ebSSage Weil 1665f3c4ebe6SYan, Zheng if (rinfo->hash_order) { 1666f3c4ebe6SYan, Zheng u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 1667f3c4ebe6SYan, Zheng rde->name, rde->name_len); 1668f3c4ebe6SYan, Zheng hash = ceph_frag_value(hash); 1669f3c4ebe6SYan, Zheng if (hash != last_hash) 1670f3c4ebe6SYan, Zheng fpos_offset = 2; 1671f3c4ebe6SYan, Zheng last_hash = hash; 1672f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(hash, fpos_offset++, true); 1673f3c4ebe6SYan, Zheng } else { 1674f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(frag, fpos_offset++, false); 1675f3c4ebe6SYan, Zheng } 1676355da1ebSSage Weil 1677355da1ebSSage Weil retry_lookup: 1678355da1ebSSage Weil dn = d_lookup(parent, &dname); 1679355da1ebSSage Weil dout("d_lookup on parent=%p name=%.*s got %p\n", 1680355da1ebSSage Weil parent, dname.len, dname.name, dn); 1681355da1ebSSage Weil 1682355da1ebSSage Weil if (!dn) { 1683355da1ebSSage Weil dn = d_alloc(parent, &dname); 1684355da1ebSSage Weil dout("d_alloc %p '%.*s' = %p\n", parent, 1685355da1ebSSage Weil dname.len, dname.name, dn); 1686d37b1d99SMarkus Elfring if (!dn) { 1687355da1ebSSage Weil dout("d_alloc badness\n"); 1688355da1ebSSage Weil err = -ENOMEM; 1689355da1ebSSage Weil goto out; 1690355da1ebSSage Weil } 16912b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 1692f5d55f03SJeff Layton (ceph_ino(d_inode(dn)) != tvino.ino || 1693f5d55f03SJeff Layton ceph_snap(d_inode(dn)) != tvino.snap)) { 16945495c2d0SYan, Zheng struct ceph_dentry_info *di = ceph_dentry(dn); 1695355da1ebSSage Weil dout(" dn %p points to wrong inode %p\n", 16962b0143b5SDavid Howells dn, d_inode(dn)); 16975495c2d0SYan, Zheng 16985495c2d0SYan, Zheng spin_lock(&dn->d_lock); 16995495c2d0SYan, Zheng if (di->offset > 0 && 17005495c2d0SYan, Zheng di->lease_shared_gen == 17015495c2d0SYan, Zheng atomic_read(&ci->i_shared_gen)) { 1702933ad2c9SYan, Zheng __ceph_dir_clear_ordered(ci); 17035495c2d0SYan, Zheng di->offset = 0; 17045495c2d0SYan, Zheng } 17055495c2d0SYan, Zheng spin_unlock(&dn->d_lock); 17065495c2d0SYan, Zheng 1707355da1ebSSage Weil d_delete(dn); 1708355da1ebSSage Weil dput(dn); 1709355da1ebSSage Weil goto retry_lookup; 1710355da1ebSSage Weil } 1711355da1ebSSage Weil 1712355da1ebSSage Weil /* inode */ 17132b0143b5SDavid Howells if (d_really_is_positive(dn)) { 17142b0143b5SDavid Howells in = d_inode(dn); 1715355da1ebSSage Weil } else { 1716f5d55f03SJeff Layton in = ceph_get_inode(parent->d_sb, tvino); 1717ac1f12efSDan Carpenter if (IS_ERR(in)) { 1718355da1ebSSage Weil dout("new_inode badness\n"); 17192744c171SAl Viro d_drop(dn); 1720355da1ebSSage Weil dput(dn); 1721ac1f12efSDan Carpenter err = PTR_ERR(in); 1722355da1ebSSage Weil goto out; 1723355da1ebSSage Weil } 1724355da1ebSSage Weil } 1725355da1ebSSage Weil 1726966c7160SJeff Layton ret = ceph_fill_inode(in, NULL, &rde->inode, NULL, session, 172757c21994SJeff Layton -1, &req->r_caps_reservation); 1728fdd4e158SYan, Zheng if (ret < 0) { 1729966c7160SJeff Layton pr_err("ceph_fill_inode badness on %p\n", in); 17303e1d0452SYan, Zheng if (d_really_is_negative(dn)) { 17313e1d0452SYan, Zheng /* avoid calling iput_final() in mds 17323e1d0452SYan, Zheng * dispatch threads */ 1733893e456bSJeff Layton if (in->i_state & I_NEW) { 1734893e456bSJeff Layton ihold(in); 1735893e456bSJeff Layton discard_new_inode(in); 1736893e456bSJeff Layton } 17373e1d0452SYan, Zheng ceph_async_iput(in); 17383e1d0452SYan, Zheng } 173986b58d13SYan, Zheng d_drop(dn); 1740fdd4e158SYan, Zheng err = ret; 1741d69ed05aSSage Weil goto next_item; 1742355da1ebSSage Weil } 1743893e456bSJeff Layton if (in->i_state & I_NEW) 1744893e456bSJeff Layton unlock_new_inode(in); 174586b58d13SYan, Zheng 17462b0143b5SDavid Howells if (d_really_is_negative(dn)) { 1747315f2408SYan, Zheng if (ceph_security_xattr_deadlock(in)) { 1748315f2408SYan, Zheng dout(" skip splicing dn %p to inode %p" 1749315f2408SYan, Zheng " (security xattr deadlock)\n", dn, in); 17503e1d0452SYan, Zheng ceph_async_iput(in); 1751315f2408SYan, Zheng skipped++; 1752315f2408SYan, Zheng goto next_item; 1753315f2408SYan, Zheng } 1754315f2408SYan, Zheng 17552bf996acSYan, Zheng err = splice_dentry(&dn, in); 17562bf996acSYan, Zheng if (err < 0) 175786b58d13SYan, Zheng goto next_item; 175886b58d13SYan, Zheng } 175986b58d13SYan, Zheng 1760f3c4ebe6SYan, Zheng ceph_dentry(dn)->offset = rde->offset; 176186b58d13SYan, Zheng 1762543212b3SYan, Zheng update_dentry_lease(d_inode(parent), dn, 1763543212b3SYan, Zheng rde->lease, req->r_session, 1764543212b3SYan, Zheng req->r_request_started); 1765fdd4e158SYan, Zheng 1766315f2408SYan, Zheng if (err == 0 && skipped == 0 && cache_ctl.index >= 0) { 1767fdd4e158SYan, Zheng ret = fill_readdir_cache(d_inode(parent), dn, 1768fdd4e158SYan, Zheng &cache_ctl, req); 1769fdd4e158SYan, Zheng if (ret < 0) 1770fdd4e158SYan, Zheng err = ret; 1771fdd4e158SYan, Zheng } 1772d69ed05aSSage Weil next_item: 1773355da1ebSSage Weil dput(dn); 1774355da1ebSSage Weil } 1775355da1ebSSage Weil out: 1776315f2408SYan, Zheng if (err == 0 && skipped == 0) { 1777bc2de10dSJeff Layton set_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags); 1778fdd4e158SYan, Zheng req->r_readdir_cache_idx = cache_ctl.index; 1779fdd4e158SYan, Zheng } 1780fdd4e158SYan, Zheng ceph_readdir_cache_release(&cache_ctl); 1781355da1ebSSage Weil dout("readdir_prepopulate done\n"); 1782355da1ebSSage Weil return err; 1783355da1ebSSage Weil } 1784355da1ebSSage Weil 1785efb0ca76SYan, Zheng bool ceph_inode_set_size(struct inode *inode, loff_t size) 1786355da1ebSSage Weil { 1787355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1788efb0ca76SYan, Zheng bool ret; 1789355da1ebSSage Weil 1790be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1791355da1ebSSage Weil dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); 179299c88e69SYan, Zheng i_size_write(inode, size); 1793224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 1794355da1ebSSage Weil 1795efb0ca76SYan, Zheng ret = __ceph_should_report_size(ci); 1796355da1ebSSage Weil 1797be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1798355da1ebSSage Weil return ret; 1799355da1ebSSage Weil } 1800355da1ebSSage Weil 1801355da1ebSSage Weil /* 18023e1d0452SYan, Zheng * Put reference to inode, but avoid calling iput_final() in current thread. 18033e1d0452SYan, Zheng * iput_final() may wait for reahahead pages. The wait can cause deadlock in 18043e1d0452SYan, Zheng * some contexts. 18053e1d0452SYan, Zheng */ 18063e1d0452SYan, Zheng void ceph_async_iput(struct inode *inode) 18073e1d0452SYan, Zheng { 18083e1d0452SYan, Zheng if (!inode) 18093e1d0452SYan, Zheng return; 18103e1d0452SYan, Zheng for (;;) { 18113e1d0452SYan, Zheng if (atomic_add_unless(&inode->i_count, -1, 1)) 18123e1d0452SYan, Zheng break; 18133e1d0452SYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 18143e1d0452SYan, Zheng &ceph_inode(inode)->i_work)) 18153e1d0452SYan, Zheng break; 18163e1d0452SYan, Zheng /* queue work failed, i_count must be at least 2 */ 18173e1d0452SYan, Zheng } 18183e1d0452SYan, Zheng } 18193e1d0452SYan, Zheng 182064f28c62SJeff Layton void ceph_queue_inode_work(struct inode *inode, int work_bit) 18213c6f6b79SSage Weil { 182264f28c62SJeff Layton struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 18231cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 182464f28c62SJeff Layton set_bit(work_bit, &ci->i_work_mask); 18251cf89a8dSYan, Zheng 182615a2015fSSage Weil ihold(inode); 182764f28c62SJeff Layton if (queue_work(fsc->inode_wq, &ci->i_work)) { 182864f28c62SJeff Layton dout("queue_inode_work %p, mask=%lx\n", inode, ci->i_work_mask); 18293c6f6b79SSage Weil } else { 183064f28c62SJeff Layton dout("queue_inode_work %p already queued, mask=%lx\n", 18311cf89a8dSYan, Zheng inode, ci->i_work_mask); 18321cf89a8dSYan, Zheng iput(inode); 18331cf89a8dSYan, Zheng } 18341cf89a8dSYan, Zheng } 18351cf89a8dSYan, Zheng 18361cf89a8dSYan, Zheng static void ceph_do_invalidate_pages(struct inode *inode) 18371cf89a8dSYan, Zheng { 18381cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 18396c93df5dSYan, Zheng struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 1840355da1ebSSage Weil u32 orig_gen; 1841355da1ebSSage Weil int check = 0; 1842355da1ebSSage Weil 1843b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 18446c93df5dSYan, Zheng 184550c9132dSJeff Layton if (READ_ONCE(fsc->mount_state) >= CEPH_MOUNT_SHUTDOWN) { 18466c93df5dSYan, Zheng pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n", 18476c93df5dSYan, Zheng inode, ceph_ino(inode)); 18486c93df5dSYan, Zheng mapping_set_error(inode->i_mapping, -EIO); 18496c93df5dSYan, Zheng truncate_pagecache(inode, 0); 18506c93df5dSYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 18516c93df5dSYan, Zheng goto out; 18526c93df5dSYan, Zheng } 18536c93df5dSYan, Zheng 1854be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1855355da1ebSSage Weil dout("invalidate_pages %p gen %d revoking %d\n", inode, 1856355da1ebSSage Weil ci->i_rdcache_gen, ci->i_rdcache_revoking); 1857cd045cb4SSage Weil if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { 18589563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 18599563f88cSYan, Zheng check = 1; 1860be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1861b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1862355da1ebSSage Weil goto out; 1863355da1ebSSage Weil } 1864355da1ebSSage Weil orig_gen = ci->i_rdcache_gen; 1865be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1866355da1ebSSage Weil 186710a7052cSJeff Layton ceph_fscache_invalidate(inode); 18689abd4db7SYan, Zheng if (invalidate_inode_pages2(inode->i_mapping) < 0) { 18699abd4db7SYan, Zheng pr_err("invalidate_pages %p fails\n", inode); 18709abd4db7SYan, Zheng } 1871355da1ebSSage Weil 1872be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1873cd045cb4SSage Weil if (orig_gen == ci->i_rdcache_gen && 1874cd045cb4SSage Weil orig_gen == ci->i_rdcache_revoking) { 1875355da1ebSSage Weil dout("invalidate_pages %p gen %d successful\n", inode, 1876355da1ebSSage Weil ci->i_rdcache_gen); 1877cd045cb4SSage Weil ci->i_rdcache_revoking--; 1878355da1ebSSage Weil check = 1; 1879355da1ebSSage Weil } else { 1880cd045cb4SSage Weil dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", 1881cd045cb4SSage Weil inode, orig_gen, ci->i_rdcache_gen, 1882cd045cb4SSage Weil ci->i_rdcache_revoking); 18839563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 18849563f88cSYan, Zheng check = 1; 1885355da1ebSSage Weil } 1886be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1887b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 18889563f88cSYan, Zheng out: 1889355da1ebSSage Weil if (check) 1890355da1ebSSage Weil ceph_check_caps(ci, 0, NULL); 18913c6f6b79SSage Weil } 18923c6f6b79SSage Weil 18933c6f6b79SSage Weil /* 1894355da1ebSSage Weil * Make sure any pending truncation is applied before doing anything 1895355da1ebSSage Weil * that may depend on it. 1896355da1ebSSage Weil */ 1897b415bf4fSYan, Zheng void __ceph_do_pending_vmtruncate(struct inode *inode) 1898355da1ebSSage Weil { 1899355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1900355da1ebSSage Weil u64 to; 1901a85f50b6SYan, Zheng int wrbuffer_refs, finish = 0; 1902355da1ebSSage Weil 1903b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1904355da1ebSSage Weil retry: 1905be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1906355da1ebSSage Weil if (ci->i_truncate_pending == 0) { 1907355da1ebSSage Weil dout("__do_pending_vmtruncate %p none pending\n", inode); 1908be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1909b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1910355da1ebSSage Weil return; 1911355da1ebSSage Weil } 1912355da1ebSSage Weil 1913355da1ebSSage Weil /* 1914355da1ebSSage Weil * make sure any dirty snapped pages are flushed before we 1915355da1ebSSage Weil * possibly truncate them.. so write AND block! 1916355da1ebSSage Weil */ 1917355da1ebSSage Weil if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { 1918c8fd0d37SYan, Zheng spin_unlock(&ci->i_ceph_lock); 1919355da1ebSSage Weil dout("__do_pending_vmtruncate %p flushing snaps first\n", 1920355da1ebSSage Weil inode); 1921355da1ebSSage Weil filemap_write_and_wait_range(&inode->i_data, 0, 1922355da1ebSSage Weil inode->i_sb->s_maxbytes); 1923355da1ebSSage Weil goto retry; 1924355da1ebSSage Weil } 1925355da1ebSSage Weil 1926b0d7c223SYan, Zheng /* there should be no reader or writer */ 1927b0d7c223SYan, Zheng WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); 1928b0d7c223SYan, Zheng 1929355da1ebSSage Weil to = ci->i_truncate_size; 1930355da1ebSSage Weil wrbuffer_refs = ci->i_wrbuffer_ref; 1931355da1ebSSage Weil dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, 1932355da1ebSSage Weil ci->i_truncate_pending, to); 1933be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1934355da1ebSSage Weil 19354e217b5dSYan, Zheng truncate_pagecache(inode, to); 1936355da1ebSSage Weil 1937be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1938a85f50b6SYan, Zheng if (to == ci->i_truncate_size) { 1939a85f50b6SYan, Zheng ci->i_truncate_pending = 0; 1940a85f50b6SYan, Zheng finish = 1; 1941a85f50b6SYan, Zheng } 1942be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1943a85f50b6SYan, Zheng if (!finish) 1944a85f50b6SYan, Zheng goto retry; 1945355da1ebSSage Weil 1946b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1947b0d7c223SYan, Zheng 1948355da1ebSSage Weil if (wrbuffer_refs == 0) 1949bf73c62eSYan, Zheng ceph_check_caps(ci, 0, NULL); 1950a85f50b6SYan, Zheng 195103066f23SYehuda Sadeh wake_up_all(&ci->i_cap_wq); 1952355da1ebSSage Weil } 1953355da1ebSSage Weil 19541cf89a8dSYan, Zheng static void ceph_inode_work(struct work_struct *work) 19551cf89a8dSYan, Zheng { 19561cf89a8dSYan, Zheng struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 19571cf89a8dSYan, Zheng i_work); 19581cf89a8dSYan, Zheng struct inode *inode = &ci->vfs_inode; 19591cf89a8dSYan, Zheng 19601cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_WRITEBACK, &ci->i_work_mask)) { 19611cf89a8dSYan, Zheng dout("writeback %p\n", inode); 19621cf89a8dSYan, Zheng filemap_fdatawrite(&inode->i_data); 19631cf89a8dSYan, Zheng } 19641cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_INVALIDATE_PAGES, &ci->i_work_mask)) 19651cf89a8dSYan, Zheng ceph_do_invalidate_pages(inode); 19661cf89a8dSYan, Zheng 19671cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_VMTRUNCATE, &ci->i_work_mask)) 19681cf89a8dSYan, Zheng __ceph_do_pending_vmtruncate(inode); 19691cf89a8dSYan, Zheng 1970a8810cdcSJeff Layton if (test_and_clear_bit(CEPH_I_WORK_CHECK_CAPS, &ci->i_work_mask)) 1971a8810cdcSJeff Layton ceph_check_caps(ci, 0, NULL); 1972a8810cdcSJeff Layton 1973a8810cdcSJeff Layton if (test_and_clear_bit(CEPH_I_WORK_FLUSH_SNAPS, &ci->i_work_mask)) 1974a8810cdcSJeff Layton ceph_flush_snaps(ci, NULL); 1975a8810cdcSJeff Layton 19761cf89a8dSYan, Zheng iput(inode); 19771cf89a8dSYan, Zheng } 19781cf89a8dSYan, Zheng 1979355da1ebSSage Weil /* 1980355da1ebSSage Weil * symlinks 1981355da1ebSSage Weil */ 1982355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops = { 19836b255391SAl Viro .get_link = simple_get_link, 19840b932672SYan, Zheng .setattr = ceph_setattr, 19850b932672SYan, Zheng .getattr = ceph_getattr, 19860b932672SYan, Zheng .listxattr = ceph_listxattr, 1987355da1ebSSage Weil }; 1988355da1ebSSage Weil 1989a26feccaSAndreas Gruenbacher int __ceph_setattr(struct inode *inode, struct iattr *attr) 1990355da1ebSSage Weil { 1991355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1992c62498d7SJeff Layton unsigned int ia_valid = attr->ia_valid; 1993355da1ebSSage Weil struct ceph_mds_request *req; 1994a26feccaSAndreas Gruenbacher struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; 1995f66fd9f0SYan, Zheng struct ceph_cap_flush *prealloc_cf; 1996355da1ebSSage Weil int issued; 1997355da1ebSSage Weil int release = 0, dirtied = 0; 1998355da1ebSSage Weil int mask = 0; 1999355da1ebSSage Weil int err = 0; 2000fca65b4aSSage Weil int inode_dirty_flags = 0; 2001604d1b02SYan, Zheng bool lock_snap_rwsem = false; 2002355da1ebSSage Weil 2003f66fd9f0SYan, Zheng prealloc_cf = ceph_alloc_cap_flush(); 2004f66fd9f0SYan, Zheng if (!prealloc_cf) 2005f66fd9f0SYan, Zheng return -ENOMEM; 2006f66fd9f0SYan, Zheng 2007355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, 2008355da1ebSSage Weil USE_AUTH_MDS); 2009f66fd9f0SYan, Zheng if (IS_ERR(req)) { 2010f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 2011355da1ebSSage Weil return PTR_ERR(req); 2012f66fd9f0SYan, Zheng } 2013355da1ebSSage Weil 2014be655596SSage Weil spin_lock(&ci->i_ceph_lock); 2015355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 2016604d1b02SYan, Zheng 2017604d1b02SYan, Zheng if (!ci->i_head_snapc && 2018604d1b02SYan, Zheng (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { 2019604d1b02SYan, Zheng lock_snap_rwsem = true; 2020604d1b02SYan, Zheng if (!down_read_trylock(&mdsc->snap_rwsem)) { 2021604d1b02SYan, Zheng spin_unlock(&ci->i_ceph_lock); 2022604d1b02SYan, Zheng down_read(&mdsc->snap_rwsem); 2023604d1b02SYan, Zheng spin_lock(&ci->i_ceph_lock); 2024604d1b02SYan, Zheng issued = __ceph_caps_issued(ci, NULL); 2025604d1b02SYan, Zheng } 2026604d1b02SYan, Zheng } 2027604d1b02SYan, Zheng 2028355da1ebSSage Weil dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); 2029355da1ebSSage Weil 2030355da1ebSSage Weil if (ia_valid & ATTR_UID) { 2031355da1ebSSage Weil dout("setattr %p uid %d -> %d\n", inode, 2032bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 2033bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 2034355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2035355da1ebSSage Weil inode->i_uid = attr->ia_uid; 2036355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2037355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2038ab871b90SEric W. Biederman !uid_eq(attr->ia_uid, inode->i_uid)) { 2039ab871b90SEric W. Biederman req->r_args.setattr.uid = cpu_to_le32( 2040ab871b90SEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 2041355da1ebSSage Weil mask |= CEPH_SETATTR_UID; 2042355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2043355da1ebSSage Weil } 2044355da1ebSSage Weil } 2045355da1ebSSage Weil if (ia_valid & ATTR_GID) { 2046355da1ebSSage Weil dout("setattr %p gid %d -> %d\n", inode, 2047bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid), 2048bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 2049355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2050355da1ebSSage Weil inode->i_gid = attr->ia_gid; 2051355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2052355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2053ab871b90SEric W. Biederman !gid_eq(attr->ia_gid, inode->i_gid)) { 2054ab871b90SEric W. Biederman req->r_args.setattr.gid = cpu_to_le32( 2055ab871b90SEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 2056355da1ebSSage Weil mask |= CEPH_SETATTR_GID; 2057355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2058355da1ebSSage Weil } 2059355da1ebSSage Weil } 2060355da1ebSSage Weil if (ia_valid & ATTR_MODE) { 2061355da1ebSSage Weil dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, 2062355da1ebSSage Weil attr->ia_mode); 2063355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2064355da1ebSSage Weil inode->i_mode = attr->ia_mode; 2065355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2066355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2067355da1ebSSage Weil attr->ia_mode != inode->i_mode) { 20687221fe4cSGuangliang Zhao inode->i_mode = attr->ia_mode; 2069355da1ebSSage Weil req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); 2070355da1ebSSage Weil mask |= CEPH_SETATTR_MODE; 2071355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2072355da1ebSSage Weil } 2073355da1ebSSage Weil } 2074355da1ebSSage Weil 2075355da1ebSSage Weil if (ia_valid & ATTR_ATIME) { 207613442b03SDeepa Dinamani dout("setattr %p atime %lld.%ld -> %lld.%ld\n", inode, 20779bbeab41SArnd Bergmann inode->i_atime.tv_sec, inode->i_atime.tv_nsec, 20789bbeab41SArnd Bergmann attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); 2079355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2080355da1ebSSage Weil ci->i_time_warp_seq++; 2081355da1ebSSage Weil inode->i_atime = attr->ia_atime; 2082355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2083355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 208495582b00SDeepa Dinamani timespec64_compare(&inode->i_atime, 2085355da1ebSSage Weil &attr->ia_atime) < 0) { 2086355da1ebSSage Weil inode->i_atime = attr->ia_atime; 2087355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2088355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 208995582b00SDeepa Dinamani !timespec64_equal(&inode->i_atime, &attr->ia_atime)) { 20909bbeab41SArnd Bergmann ceph_encode_timespec64(&req->r_args.setattr.atime, 20919bbeab41SArnd Bergmann &attr->ia_atime); 2092355da1ebSSage Weil mask |= CEPH_SETATTR_ATIME; 2093be70489eSYan, Zheng release |= CEPH_CAP_FILE_SHARED | 2094be70489eSYan, Zheng CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2095355da1ebSSage Weil } 2096355da1ebSSage Weil } 2097c62498d7SJeff Layton if (ia_valid & ATTR_SIZE) { 2098c62498d7SJeff Layton dout("setattr %p size %lld -> %lld\n", inode, 2099c62498d7SJeff Layton inode->i_size, attr->ia_size); 2100c62498d7SJeff Layton if ((issued & CEPH_CAP_FILE_EXCL) && 2101c62498d7SJeff Layton attr->ia_size > inode->i_size) { 2102c62498d7SJeff Layton i_size_write(inode, attr->ia_size); 2103c62498d7SJeff Layton inode->i_blocks = calc_inode_blocks(attr->ia_size); 2104c62498d7SJeff Layton ci->i_reported_size = attr->ia_size; 2105c62498d7SJeff Layton dirtied |= CEPH_CAP_FILE_EXCL; 2106c62498d7SJeff Layton ia_valid |= ATTR_MTIME; 2107c62498d7SJeff Layton } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 2108c62498d7SJeff Layton attr->ia_size != inode->i_size) { 2109c62498d7SJeff Layton req->r_args.setattr.size = cpu_to_le64(attr->ia_size); 2110c62498d7SJeff Layton req->r_args.setattr.old_size = 2111c62498d7SJeff Layton cpu_to_le64(inode->i_size); 2112c62498d7SJeff Layton mask |= CEPH_SETATTR_SIZE; 2113c62498d7SJeff Layton release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL | 2114c62498d7SJeff Layton CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2115c62498d7SJeff Layton } 2116c62498d7SJeff Layton } 2117355da1ebSSage Weil if (ia_valid & ATTR_MTIME) { 211813442b03SDeepa Dinamani dout("setattr %p mtime %lld.%ld -> %lld.%ld\n", inode, 21199bbeab41SArnd Bergmann inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 21209bbeab41SArnd Bergmann attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); 2121355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2122355da1ebSSage Weil ci->i_time_warp_seq++; 2123355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2124355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2125355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 212695582b00SDeepa Dinamani timespec64_compare(&inode->i_mtime, 2127355da1ebSSage Weil &attr->ia_mtime) < 0) { 2128355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2129355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2130355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 213195582b00SDeepa Dinamani !timespec64_equal(&inode->i_mtime, &attr->ia_mtime)) { 21329bbeab41SArnd Bergmann ceph_encode_timespec64(&req->r_args.setattr.mtime, 21339bbeab41SArnd Bergmann &attr->ia_mtime); 2134355da1ebSSage Weil mask |= CEPH_SETATTR_MTIME; 2135be70489eSYan, Zheng release |= CEPH_CAP_FILE_SHARED | 2136be70489eSYan, Zheng CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2137355da1ebSSage Weil } 2138355da1ebSSage Weil } 2139355da1ebSSage Weil 2140355da1ebSSage Weil /* these do nothing */ 2141355da1ebSSage Weil if (ia_valid & ATTR_CTIME) { 2142355da1ebSSage Weil bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| 2143355da1ebSSage Weil ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; 214413442b03SDeepa Dinamani dout("setattr %p ctime %lld.%ld -> %lld.%ld (%s)\n", inode, 21459bbeab41SArnd Bergmann inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 21469bbeab41SArnd Bergmann attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, 2147355da1ebSSage Weil only ? "ctime only" : "ignored"); 2148355da1ebSSage Weil if (only) { 2149355da1ebSSage Weil /* 2150355da1ebSSage Weil * if kernel wants to dirty ctime but nothing else, 2151355da1ebSSage Weil * we need to choose a cap to dirty under, or do 2152355da1ebSSage Weil * a almost-no-op setattr 2153355da1ebSSage Weil */ 2154355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) 2155355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2156355da1ebSSage Weil else if (issued & CEPH_CAP_FILE_EXCL) 2157355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2158355da1ebSSage Weil else if (issued & CEPH_CAP_XATTR_EXCL) 2159355da1ebSSage Weil dirtied |= CEPH_CAP_XATTR_EXCL; 2160355da1ebSSage Weil else 2161355da1ebSSage Weil mask |= CEPH_SETATTR_CTIME; 2162355da1ebSSage Weil } 2163355da1ebSSage Weil } 2164355da1ebSSage Weil if (ia_valid & ATTR_FILE) 2165355da1ebSSage Weil dout("setattr %p ATTR_FILE ... hrm!\n", inode); 2166355da1ebSSage Weil 2167355da1ebSSage Weil if (dirtied) { 2168f66fd9f0SYan, Zheng inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, 2169f66fd9f0SYan, Zheng &prealloc_cf); 21704ca2fea6SYan, Zheng inode->i_ctime = attr->ia_ctime; 2171355da1ebSSage Weil } 2172355da1ebSSage Weil 2173355da1ebSSage Weil release &= issued; 2174be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 2175604d1b02SYan, Zheng if (lock_snap_rwsem) 2176604d1b02SYan, Zheng up_read(&mdsc->snap_rwsem); 2177355da1ebSSage Weil 2178fca65b4aSSage Weil if (inode_dirty_flags) 2179fca65b4aSSage Weil __mark_inode_dirty(inode, inode_dirty_flags); 2180fca65b4aSSage Weil 21817221fe4cSGuangliang Zhao 2182355da1ebSSage Weil if (mask) { 218370b666c3SSage Weil req->r_inode = inode; 218470b666c3SSage Weil ihold(inode); 2185355da1ebSSage Weil req->r_inode_drop = release; 2186355da1ebSSage Weil req->r_args.setattr.mask = cpu_to_le32(mask); 2187355da1ebSSage Weil req->r_num_caps = 1; 21880ed1e90aSArnd Bergmann req->r_stamp = attr->ia_ctime; 2189752c8bdcSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 2190355da1ebSSage Weil } 2191355da1ebSSage Weil dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, 2192355da1ebSSage Weil ceph_cap_string(dirtied), mask); 2193355da1ebSSage Weil 2194355da1ebSSage Weil ceph_mdsc_put_request(req); 21958179a101SYan, Zheng ceph_free_cap_flush(prealloc_cf); 21968179a101SYan, Zheng 21978179a101SYan, Zheng if (err >= 0 && (mask & CEPH_SETATTR_SIZE)) 2198b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 21998179a101SYan, Zheng 2200355da1ebSSage Weil return err; 2201355da1ebSSage Weil } 2202355da1ebSSage Weil 2203355da1ebSSage Weil /* 2204a26feccaSAndreas Gruenbacher * setattr 2205a26feccaSAndreas Gruenbacher */ 2206549c7297SChristian Brauner int ceph_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, 2207549c7297SChristian Brauner struct iattr *attr) 2208a26feccaSAndreas Gruenbacher { 2209fd5472edSJan Kara struct inode *inode = d_inode(dentry); 221036a4c72dSChengguang Xu struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 2211fd5472edSJan Kara int err; 2212fd5472edSJan Kara 2213fd5472edSJan Kara if (ceph_snap(inode) != CEPH_NOSNAP) 2214fd5472edSJan Kara return -EROFS; 2215fd5472edSJan Kara 22162f221d6fSChristian Brauner err = setattr_prepare(&init_user_ns, dentry, attr); 2217fd5472edSJan Kara if (err != 0) 2218fd5472edSJan Kara return err; 2219fd5472edSJan Kara 22202b83845fSLuis Henriques if ((attr->ia_valid & ATTR_SIZE) && 222136a4c72dSChengguang Xu attr->ia_size > max(inode->i_size, fsc->max_file_size)) 222236a4c72dSChengguang Xu return -EFBIG; 222336a4c72dSChengguang Xu 222436a4c72dSChengguang Xu if ((attr->ia_valid & ATTR_SIZE) && 22252b83845fSLuis Henriques ceph_quota_is_max_bytes_exceeded(inode, attr->ia_size)) 22262b83845fSLuis Henriques return -EDQUOT; 22272b83845fSLuis Henriques 22288179a101SYan, Zheng err = __ceph_setattr(inode, attr); 22298179a101SYan, Zheng 22308179a101SYan, Zheng if (err >= 0 && (attr->ia_valid & ATTR_MODE)) 2231e65ce2a5SChristian Brauner err = posix_acl_chmod(&init_user_ns, inode, attr->ia_mode); 22328179a101SYan, Zheng 22338179a101SYan, Zheng return err; 2234a26feccaSAndreas Gruenbacher } 2235a26feccaSAndreas Gruenbacher 2236a26feccaSAndreas Gruenbacher /* 2237355da1ebSSage Weil * Verify that we have a lease on the given mask. If not, 2238355da1ebSSage Weil * do a getattr against an mds. 2239355da1ebSSage Weil */ 224001deead0SYan, Zheng int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 224101deead0SYan, Zheng int mask, bool force) 2242355da1ebSSage Weil { 22433d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 22443d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 2245355da1ebSSage Weil struct ceph_mds_request *req; 224649a9f4f6SYan, Zheng int mode; 2247355da1ebSSage Weil int err; 2248355da1ebSSage Weil 2249355da1ebSSage Weil if (ceph_snap(inode) == CEPH_SNAPDIR) { 2250355da1ebSSage Weil dout("do_getattr inode %p SNAPDIR\n", inode); 2251355da1ebSSage Weil return 0; 2252355da1ebSSage Weil } 2253355da1ebSSage Weil 225401deead0SYan, Zheng dout("do_getattr inode %p mask %s mode 0%o\n", 225501deead0SYan, Zheng inode, ceph_cap_string(mask), inode->i_mode); 22561af16d54SXiubo Li if (!force && ceph_caps_issued_mask_metric(ceph_inode(inode), mask, 1)) 2257355da1ebSSage Weil return 0; 2258355da1ebSSage Weil 225949a9f4f6SYan, Zheng mode = (mask & CEPH_STAT_RSTAT) ? USE_AUTH_MDS : USE_ANY_MDS; 226049a9f4f6SYan, Zheng req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, mode); 2261355da1ebSSage Weil if (IS_ERR(req)) 2262355da1ebSSage Weil return PTR_ERR(req); 226370b666c3SSage Weil req->r_inode = inode; 226470b666c3SSage Weil ihold(inode); 2265355da1ebSSage Weil req->r_num_caps = 1; 2266355da1ebSSage Weil req->r_args.getattr.mask = cpu_to_le32(mask); 226701deead0SYan, Zheng req->r_locked_page = locked_page; 2268355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 226901deead0SYan, Zheng if (locked_page && err == 0) { 227001deead0SYan, Zheng u64 inline_version = req->r_reply_info.targeti.inline_version; 227101deead0SYan, Zheng if (inline_version == 0) { 227201deead0SYan, Zheng /* the reply is supposed to contain inline data */ 227301deead0SYan, Zheng err = -EINVAL; 227401deead0SYan, Zheng } else if (inline_version == CEPH_INLINE_NONE) { 227501deead0SYan, Zheng err = -ENODATA; 227601deead0SYan, Zheng } else { 227701deead0SYan, Zheng err = req->r_reply_info.targeti.inline_len; 227801deead0SYan, Zheng } 227901deead0SYan, Zheng } 2280355da1ebSSage Weil ceph_mdsc_put_request(req); 2281355da1ebSSage Weil dout("do_getattr result=%d\n", err); 2282355da1ebSSage Weil return err; 2283355da1ebSSage Weil } 2284355da1ebSSage Weil 2285355da1ebSSage Weil 2286355da1ebSSage Weil /* 2287355da1ebSSage Weil * Check inode permissions. We verify we have a valid value for 2288355da1ebSSage Weil * the AUTH cap, then call the generic handler. 2289355da1ebSSage Weil */ 2290549c7297SChristian Brauner int ceph_permission(struct user_namespace *mnt_userns, struct inode *inode, 2291549c7297SChristian Brauner int mask) 2292355da1ebSSage Weil { 2293b74c79e9SNick Piggin int err; 2294b74c79e9SNick Piggin 229510556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 2296b74c79e9SNick Piggin return -ECHILD; 2297b74c79e9SNick Piggin 2298508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); 2299355da1ebSSage Weil 2300355da1ebSSage Weil if (!err) 230147291baaSChristian Brauner err = generic_permission(&init_user_ns, inode, mask); 2302355da1ebSSage Weil return err; 2303355da1ebSSage Weil } 2304355da1ebSSage Weil 2305428bb68aSJeff Layton /* Craft a mask of needed caps given a set of requested statx attrs. */ 230604fabb11SJeff Layton static int statx_to_caps(u32 want, umode_t mode) 2307428bb68aSJeff Layton { 2308428bb68aSJeff Layton int mask = 0; 2309428bb68aSJeff Layton 231058981784SJeff Layton if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME)) 2311428bb68aSJeff Layton mask |= CEPH_CAP_AUTH_SHARED; 2312428bb68aSJeff Layton 231304fabb11SJeff Layton if (want & (STATX_NLINK|STATX_CTIME)) { 231404fabb11SJeff Layton /* 231504fabb11SJeff Layton * The link count for directories depends on inode->i_subdirs, 231604fabb11SJeff Layton * and that is only updated when Fs caps are held. 231704fabb11SJeff Layton */ 231804fabb11SJeff Layton if (S_ISDIR(mode)) 231904fabb11SJeff Layton mask |= CEPH_CAP_FILE_SHARED; 232004fabb11SJeff Layton else 2321428bb68aSJeff Layton mask |= CEPH_CAP_LINK_SHARED; 232204fabb11SJeff Layton } 2323428bb68aSJeff Layton 2324428bb68aSJeff Layton if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE| 2325428bb68aSJeff Layton STATX_BLOCKS)) 2326428bb68aSJeff Layton mask |= CEPH_CAP_FILE_SHARED; 2327428bb68aSJeff Layton 2328428bb68aSJeff Layton if (want & (STATX_CTIME)) 2329428bb68aSJeff Layton mask |= CEPH_CAP_XATTR_SHARED; 2330428bb68aSJeff Layton 2331428bb68aSJeff Layton return mask; 2332428bb68aSJeff Layton } 2333428bb68aSJeff Layton 2334355da1ebSSage Weil /* 2335428bb68aSJeff Layton * Get all the attributes. If we have sufficient caps for the requested attrs, 2336428bb68aSJeff Layton * then we can avoid talking to the MDS at all. 2337355da1ebSSage Weil */ 2338549c7297SChristian Brauner int ceph_getattr(struct user_namespace *mnt_userns, const struct path *path, 2339549c7297SChristian Brauner struct kstat *stat, u32 request_mask, unsigned int flags) 2340355da1ebSSage Weil { 2341a528d35eSDavid Howells struct inode *inode = d_inode(path->dentry); 2342232d4b01SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 234358981784SJeff Layton u32 valid_mask = STATX_BASIC_STATS; 2344428bb68aSJeff Layton int err = 0; 2345355da1ebSSage Weil 2346428bb68aSJeff Layton /* Skip the getattr altogether if we're asked not to sync */ 2347428bb68aSJeff Layton if (!(flags & AT_STATX_DONT_SYNC)) { 234804fabb11SJeff Layton err = ceph_do_getattr(inode, 234904fabb11SJeff Layton statx_to_caps(request_mask, inode->i_mode), 2350428bb68aSJeff Layton flags & AT_STATX_FORCE_SYNC); 2351428bb68aSJeff Layton if (err) 2352428bb68aSJeff Layton return err; 2353428bb68aSJeff Layton } 2354428bb68aSJeff Layton 23550d56a451SChristian Brauner generic_fillattr(&init_user_ns, inode, stat); 2356ebce3eb2SJeff Layton stat->ino = ceph_present_inode(inode); 235758981784SJeff Layton 235858981784SJeff Layton /* 235958981784SJeff Layton * btime on newly-allocated inodes is 0, so if this is still set to 236058981784SJeff Layton * that, then assume that it's not valid. 236158981784SJeff Layton */ 236258981784SJeff Layton if (ci->i_btime.tv_sec || ci->i_btime.tv_nsec) { 236358981784SJeff Layton stat->btime = ci->i_btime; 236458981784SJeff Layton valid_mask |= STATX_BTIME; 236558981784SJeff Layton } 236658981784SJeff Layton 236775c9627eSYan, Zheng if (ceph_snap(inode) == CEPH_NOSNAP) 236875c9627eSYan, Zheng stat->dev = inode->i_sb->s_dev; 2369355da1ebSSage Weil else 237075c9627eSYan, Zheng stat->dev = ci->i_snapid_map ? ci->i_snapid_map->dev : 0; 237175c9627eSYan, Zheng 2372232d4b01SSage Weil if (S_ISDIR(inode->i_mode)) { 23731c1266bbSYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), 23741c1266bbSYehuda Sadeh RBYTES)) 2375232d4b01SSage Weil stat->size = ci->i_rbytes; 23761c1266bbSYehuda Sadeh else 23771c1266bbSYehuda Sadeh stat->size = ci->i_files + ci->i_subdirs; 2378232d4b01SSage Weil stat->blocks = 0; 2379355da1ebSSage Weil stat->blksize = 65536; 23808c6286f1SLuis Henriques /* 23818c6286f1SLuis Henriques * Some applications rely on the number of st_nlink 23828c6286f1SLuis Henriques * value on directories to be either 0 (if unlinked) 23838c6286f1SLuis Henriques * or 2 + number of subdirectories. 23848c6286f1SLuis Henriques */ 23858c6286f1SLuis Henriques if (stat->nlink == 1) 23868c6286f1SLuis Henriques /* '.' + '..' + subdirs */ 23878c6286f1SLuis Henriques stat->nlink = 1 + 1 + ci->i_subdirs; 2388355da1ebSSage Weil } 2389428bb68aSJeff Layton 239058981784SJeff Layton stat->result_mask = request_mask & valid_mask; 2391355da1ebSSage Weil return err; 2392355da1ebSSage Weil } 2393