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 if (IS_ERR(inode)) 827e34bc52SJulia Lawall return inode; 83*3e10a15fSJeff Layton 84*3e10a15fSJeff Layton if (!S_ISDIR(parent->i_mode)) { 85*3e10a15fSJeff Layton pr_warn_once("bad snapdir parent type (mode=0%o)\n", 86*3e10a15fSJeff Layton parent->i_mode); 87*3e10a15fSJeff Layton return ERR_PTR(-ENOTDIR); 88*3e10a15fSJeff Layton } 89*3e10a15fSJeff Layton 90*3e10a15fSJeff Layton if (!(inode->i_state & I_NEW) && !S_ISDIR(inode->i_mode)) { 91*3e10a15fSJeff Layton pr_warn_once("bad snapdir inode type (mode=0%o)\n", 92*3e10a15fSJeff Layton inode->i_mode); 93*3e10a15fSJeff Layton return ERR_PTR(-ENOTDIR); 94*3e10a15fSJeff Layton } 95*3e10a15fSJeff Layton 96355da1ebSSage Weil inode->i_mode = parent->i_mode; 97355da1ebSSage Weil inode->i_uid = parent->i_uid; 98355da1ebSSage Weil inode->i_gid = parent->i_gid; 99ef915725SLuis Henriques inode->i_mtime = parent->i_mtime; 100ef915725SLuis Henriques inode->i_ctime = parent->i_ctime; 101ef915725SLuis Henriques inode->i_atime = parent->i_atime; 10238c48b5fSYan, Zheng inode->i_op = &ceph_snapdir_iops; 10338c48b5fSYan, Zheng inode->i_fop = &ceph_snapdir_fops; 104b377ff13SSage Weil ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ 105b377ff13SSage Weil ci->i_rbytes = 0; 106ef915725SLuis Henriques ci->i_btime = ceph_inode(parent)->i_btime; 107893e456bSJeff Layton 108893e456bSJeff Layton if (inode->i_state & I_NEW) 109893e456bSJeff Layton unlock_new_inode(inode); 110893e456bSJeff Layton 111355da1ebSSage Weil return inode; 112355da1ebSSage Weil } 113355da1ebSSage Weil 114355da1ebSSage Weil const struct inode_operations ceph_file_iops = { 115355da1ebSSage Weil .permission = ceph_permission, 116355da1ebSSage Weil .setattr = ceph_setattr, 117355da1ebSSage Weil .getattr = ceph_getattr, 118355da1ebSSage Weil .listxattr = ceph_listxattr, 1197221fe4cSGuangliang Zhao .get_acl = ceph_get_acl, 12072466d0bSSage Weil .set_acl = ceph_set_acl, 121355da1ebSSage Weil }; 122355da1ebSSage Weil 123355da1ebSSage Weil 124355da1ebSSage Weil /* 125355da1ebSSage Weil * We use a 'frag tree' to keep track of the MDS's directory fragments 126355da1ebSSage Weil * for a given inode (usually there is just a single fragment). We 127355da1ebSSage Weil * need to know when a child frag is delegated to a new MDS, or when 128355da1ebSSage Weil * it is flagged as replicated, so we can direct our requests 129355da1ebSSage Weil * accordingly. 130355da1ebSSage Weil */ 131355da1ebSSage Weil 132355da1ebSSage Weil /* 133355da1ebSSage Weil * find/create a frag in the tree 134355da1ebSSage Weil */ 135355da1ebSSage Weil static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, 136355da1ebSSage Weil u32 f) 137355da1ebSSage Weil { 138355da1ebSSage Weil struct rb_node **p; 139355da1ebSSage Weil struct rb_node *parent = NULL; 140355da1ebSSage Weil struct ceph_inode_frag *frag; 141355da1ebSSage Weil int c; 142355da1ebSSage Weil 143355da1ebSSage Weil p = &ci->i_fragtree.rb_node; 144355da1ebSSage Weil while (*p) { 145355da1ebSSage Weil parent = *p; 146355da1ebSSage Weil frag = rb_entry(parent, struct ceph_inode_frag, node); 147355da1ebSSage Weil c = ceph_frag_compare(f, frag->frag); 148355da1ebSSage Weil if (c < 0) 149355da1ebSSage Weil p = &(*p)->rb_left; 150355da1ebSSage Weil else if (c > 0) 151355da1ebSSage Weil p = &(*p)->rb_right; 152355da1ebSSage Weil else 153355da1ebSSage Weil return frag; 154355da1ebSSage Weil } 155355da1ebSSage Weil 156355da1ebSSage Weil frag = kmalloc(sizeof(*frag), GFP_NOFS); 15751308806SMarkus Elfring if (!frag) 158355da1ebSSage Weil return ERR_PTR(-ENOMEM); 15951308806SMarkus Elfring 160355da1ebSSage Weil frag->frag = f; 161355da1ebSSage Weil frag->split_by = 0; 162355da1ebSSage Weil frag->mds = -1; 163355da1ebSSage Weil frag->ndist = 0; 164355da1ebSSage Weil 165355da1ebSSage Weil rb_link_node(&frag->node, parent, p); 166355da1ebSSage Weil rb_insert_color(&frag->node, &ci->i_fragtree); 167355da1ebSSage Weil 168355da1ebSSage Weil dout("get_or_create_frag added %llx.%llx frag %x\n", 169355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 170355da1ebSSage Weil return frag; 171355da1ebSSage Weil } 172355da1ebSSage Weil 173355da1ebSSage Weil /* 174355da1ebSSage Weil * find a specific frag @f 175355da1ebSSage Weil */ 176355da1ebSSage Weil struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) 177355da1ebSSage Weil { 178355da1ebSSage Weil struct rb_node *n = ci->i_fragtree.rb_node; 179355da1ebSSage Weil 180355da1ebSSage Weil while (n) { 181355da1ebSSage Weil struct ceph_inode_frag *frag = 182355da1ebSSage Weil rb_entry(n, struct ceph_inode_frag, node); 183355da1ebSSage Weil int c = ceph_frag_compare(f, frag->frag); 184355da1ebSSage Weil if (c < 0) 185355da1ebSSage Weil n = n->rb_left; 186355da1ebSSage Weil else if (c > 0) 187355da1ebSSage Weil n = n->rb_right; 188355da1ebSSage Weil else 189355da1ebSSage Weil return frag; 190355da1ebSSage Weil } 191355da1ebSSage Weil return NULL; 192355da1ebSSage Weil } 193355da1ebSSage Weil 194355da1ebSSage Weil /* 195355da1ebSSage Weil * Choose frag containing the given value @v. If @pfrag is 196355da1ebSSage Weil * specified, copy the frag delegation info to the caller if 197355da1ebSSage Weil * it is present. 198355da1ebSSage Weil */ 1993e7fbe9cSYan, Zheng static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2003e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 201355da1ebSSage Weil { 202355da1ebSSage Weil u32 t = ceph_frag_make(0, 0); 203355da1ebSSage Weil struct ceph_inode_frag *frag; 204355da1ebSSage Weil unsigned nway, i; 205355da1ebSSage Weil u32 n; 206355da1ebSSage Weil 207355da1ebSSage Weil if (found) 208355da1ebSSage Weil *found = 0; 209355da1ebSSage Weil 210355da1ebSSage Weil while (1) { 211355da1ebSSage Weil WARN_ON(!ceph_frag_contains_value(t, v)); 212355da1ebSSage Weil frag = __ceph_find_frag(ci, t); 213355da1ebSSage Weil if (!frag) 214355da1ebSSage Weil break; /* t is a leaf */ 215355da1ebSSage Weil if (frag->split_by == 0) { 216355da1ebSSage Weil if (pfrag) 217355da1ebSSage Weil memcpy(pfrag, frag, sizeof(*pfrag)); 218355da1ebSSage Weil if (found) 219355da1ebSSage Weil *found = 1; 220355da1ebSSage Weil break; 221355da1ebSSage Weil } 222355da1ebSSage Weil 223355da1ebSSage Weil /* choose child */ 224355da1ebSSage Weil nway = 1 << frag->split_by; 225355da1ebSSage Weil dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, 226355da1ebSSage Weil frag->split_by, nway); 227355da1ebSSage Weil for (i = 0; i < nway; i++) { 228355da1ebSSage Weil n = ceph_frag_make_child(t, frag->split_by, i); 229355da1ebSSage Weil if (ceph_frag_contains_value(n, v)) { 230355da1ebSSage Weil t = n; 231355da1ebSSage Weil break; 232355da1ebSSage Weil } 233355da1ebSSage Weil } 234355da1ebSSage Weil BUG_ON(i == nway); 235355da1ebSSage Weil } 236355da1ebSSage Weil dout("choose_frag(%x) = %x\n", v, t); 237355da1ebSSage Weil 238355da1ebSSage Weil return t; 239355da1ebSSage Weil } 240355da1ebSSage Weil 2413e7fbe9cSYan, Zheng u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2423e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 2433e7fbe9cSYan, Zheng { 2443e7fbe9cSYan, Zheng u32 ret; 2453e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 2463e7fbe9cSYan, Zheng ret = __ceph_choose_frag(ci, v, pfrag, found); 2473e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 2483e7fbe9cSYan, Zheng return ret; 2493e7fbe9cSYan, Zheng } 2503e7fbe9cSYan, Zheng 251355da1ebSSage Weil /* 252355da1ebSSage Weil * Process dirfrag (delegation) info from the mds. Include leaf 253355da1ebSSage Weil * fragment in tree ONLY if ndist > 0. Otherwise, only 254355da1ebSSage Weil * branches/splits are included in i_fragtree) 255355da1ebSSage Weil */ 256355da1ebSSage Weil static int ceph_fill_dirfrag(struct inode *inode, 257355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo) 258355da1ebSSage Weil { 259355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 260355da1ebSSage Weil struct ceph_inode_frag *frag; 261355da1ebSSage Weil u32 id = le32_to_cpu(dirinfo->frag); 262355da1ebSSage Weil int mds = le32_to_cpu(dirinfo->auth); 263355da1ebSSage Weil int ndist = le32_to_cpu(dirinfo->ndist); 2648d08503cSYan, Zheng int diri_auth = -1; 265355da1ebSSage Weil int i; 266355da1ebSSage Weil int err = 0; 267355da1ebSSage Weil 2688d08503cSYan, Zheng spin_lock(&ci->i_ceph_lock); 2698d08503cSYan, Zheng if (ci->i_auth_cap) 2708d08503cSYan, Zheng diri_auth = ci->i_auth_cap->mds; 2718d08503cSYan, Zheng spin_unlock(&ci->i_ceph_lock); 2728d08503cSYan, Zheng 27342172119SYan, Zheng if (mds == -1) /* CDIR_AUTH_PARENT */ 27442172119SYan, Zheng mds = diri_auth; 27542172119SYan, Zheng 276355da1ebSSage Weil mutex_lock(&ci->i_fragtree_mutex); 2778d08503cSYan, Zheng if (ndist == 0 && mds == diri_auth) { 278355da1ebSSage Weil /* no delegation info needed. */ 279355da1ebSSage Weil frag = __ceph_find_frag(ci, id); 280355da1ebSSage Weil if (!frag) 281355da1ebSSage Weil goto out; 282355da1ebSSage Weil if (frag->split_by == 0) { 283355da1ebSSage Weil /* tree leaf, remove */ 284355da1ebSSage Weil dout("fill_dirfrag removed %llx.%llx frag %x" 285355da1ebSSage Weil " (no ref)\n", ceph_vinop(inode), id); 286355da1ebSSage Weil rb_erase(&frag->node, &ci->i_fragtree); 287355da1ebSSage Weil kfree(frag); 288355da1ebSSage Weil } else { 289355da1ebSSage Weil /* tree branch, keep and clear */ 290355da1ebSSage Weil dout("fill_dirfrag cleared %llx.%llx frag %x" 291355da1ebSSage Weil " referral\n", ceph_vinop(inode), id); 292355da1ebSSage Weil frag->mds = -1; 293355da1ebSSage Weil frag->ndist = 0; 294355da1ebSSage Weil } 295355da1ebSSage Weil goto out; 296355da1ebSSage Weil } 297355da1ebSSage Weil 298355da1ebSSage Weil 299355da1ebSSage Weil /* find/add this frag to store mds delegation info */ 300355da1ebSSage Weil frag = __get_or_create_frag(ci, id); 301355da1ebSSage Weil if (IS_ERR(frag)) { 302355da1ebSSage Weil /* this is not the end of the world; we can continue 303355da1ebSSage Weil with bad/inaccurate delegation info */ 304355da1ebSSage Weil pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", 305355da1ebSSage Weil ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); 306355da1ebSSage Weil err = -ENOMEM; 307355da1ebSSage Weil goto out; 308355da1ebSSage Weil } 309355da1ebSSage Weil 310355da1ebSSage Weil frag->mds = mds; 311355da1ebSSage Weil frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); 312355da1ebSSage Weil for (i = 0; i < frag->ndist; i++) 313355da1ebSSage Weil frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); 314355da1ebSSage Weil dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", 315355da1ebSSage Weil ceph_vinop(inode), frag->frag, frag->ndist); 316355da1ebSSage Weil 317355da1ebSSage Weil out: 318355da1ebSSage Weil mutex_unlock(&ci->i_fragtree_mutex); 319355da1ebSSage Weil return err; 320355da1ebSSage Weil } 321355da1ebSSage Weil 322a407846eSYan, Zheng static int frag_tree_split_cmp(const void *l, const void *r) 323a407846eSYan, Zheng { 324a407846eSYan, Zheng struct ceph_frag_tree_split *ls = (struct ceph_frag_tree_split*)l; 325a407846eSYan, Zheng struct ceph_frag_tree_split *rs = (struct ceph_frag_tree_split*)r; 326fe2ed425SJeff Layton return ceph_frag_compare(le32_to_cpu(ls->frag), 327fe2ed425SJeff Layton le32_to_cpu(rs->frag)); 328a407846eSYan, Zheng } 329a407846eSYan, Zheng 330a4b7431fSYan, Zheng static bool is_frag_child(u32 f, struct ceph_inode_frag *frag) 331a4b7431fSYan, Zheng { 332a4b7431fSYan, Zheng if (!frag) 333a4b7431fSYan, Zheng return f == ceph_frag_make(0, 0); 334a4b7431fSYan, Zheng if (ceph_frag_bits(f) != ceph_frag_bits(frag->frag) + frag->split_by) 335a4b7431fSYan, Zheng return false; 336a4b7431fSYan, Zheng return ceph_frag_contains_value(frag->frag, ceph_frag_value(f)); 337a4b7431fSYan, Zheng } 338a4b7431fSYan, Zheng 3393e7fbe9cSYan, Zheng static int ceph_fill_fragtree(struct inode *inode, 3403e7fbe9cSYan, Zheng struct ceph_frag_tree_head *fragtree, 3413e7fbe9cSYan, Zheng struct ceph_mds_reply_dirfrag *dirinfo) 3423e7fbe9cSYan, Zheng { 3433e7fbe9cSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 344a4b7431fSYan, Zheng struct ceph_inode_frag *frag, *prev_frag = NULL; 3453e7fbe9cSYan, Zheng struct rb_node *rb_node; 3461b1bc16dSYan, Zheng unsigned i, split_by, nsplits; 3471b1bc16dSYan, Zheng u32 id; 3483e7fbe9cSYan, Zheng bool update = false; 3493e7fbe9cSYan, Zheng 3503e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 3513e7fbe9cSYan, Zheng nsplits = le32_to_cpu(fragtree->nsplits); 3521b1bc16dSYan, Zheng if (nsplits != ci->i_fragtree_nsplits) { 3531b1bc16dSYan, Zheng update = true; 3541b1bc16dSYan, Zheng } else if (nsplits) { 3553e7fbe9cSYan, Zheng i = prandom_u32() % nsplits; 3563e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3573e7fbe9cSYan, Zheng if (!__ceph_find_frag(ci, id)) 3583e7fbe9cSYan, Zheng update = true; 3593e7fbe9cSYan, Zheng } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { 3603e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3613e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3623e7fbe9cSYan, Zheng if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) 3633e7fbe9cSYan, Zheng update = true; 3643e7fbe9cSYan, Zheng } 3653e7fbe9cSYan, Zheng if (!update && dirinfo) { 3663e7fbe9cSYan, Zheng id = le32_to_cpu(dirinfo->frag); 3673e7fbe9cSYan, Zheng if (id != __ceph_choose_frag(ci, id, NULL, NULL)) 3683e7fbe9cSYan, Zheng update = true; 3693e7fbe9cSYan, Zheng } 3703e7fbe9cSYan, Zheng if (!update) 3713e7fbe9cSYan, Zheng goto out_unlock; 3723e7fbe9cSYan, Zheng 373a407846eSYan, Zheng if (nsplits > 1) { 374a407846eSYan, Zheng sort(fragtree->splits, nsplits, sizeof(fragtree->splits[0]), 375a407846eSYan, Zheng frag_tree_split_cmp, NULL); 376a407846eSYan, Zheng } 377a407846eSYan, Zheng 3783e7fbe9cSYan, Zheng dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); 3793e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3803e7fbe9cSYan, Zheng for (i = 0; i < nsplits; i++) { 3813e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3821b1bc16dSYan, Zheng split_by = le32_to_cpu(fragtree->splits[i].by); 3831b1bc16dSYan, Zheng if (split_by == 0 || ceph_frag_bits(id) + split_by > 24) { 3841b1bc16dSYan, Zheng pr_err("fill_fragtree %llx.%llx invalid split %d/%u, " 3851b1bc16dSYan, Zheng "frag %x split by %d\n", ceph_vinop(inode), 3861b1bc16dSYan, Zheng i, nsplits, id, split_by); 3871b1bc16dSYan, Zheng continue; 3881b1bc16dSYan, Zheng } 3893e7fbe9cSYan, Zheng frag = NULL; 3903e7fbe9cSYan, Zheng while (rb_node) { 3913e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3923e7fbe9cSYan, Zheng if (ceph_frag_compare(frag->frag, id) >= 0) { 3933e7fbe9cSYan, Zheng if (frag->frag != id) 3943e7fbe9cSYan, Zheng frag = NULL; 3953e7fbe9cSYan, Zheng else 3963e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3973e7fbe9cSYan, Zheng break; 3983e7fbe9cSYan, Zheng } 3993e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 400a4b7431fSYan, Zheng /* delete stale split/leaf node */ 401a4b7431fSYan, Zheng if (frag->split_by > 0 || 402a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 4033e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 4041b1bc16dSYan, Zheng if (frag->split_by > 0) 4051b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 4063e7fbe9cSYan, Zheng kfree(frag); 407a4b7431fSYan, Zheng } 4083e7fbe9cSYan, Zheng frag = NULL; 4093e7fbe9cSYan, Zheng } 4103e7fbe9cSYan, Zheng if (!frag) { 4113e7fbe9cSYan, Zheng frag = __get_or_create_frag(ci, id); 4123e7fbe9cSYan, Zheng if (IS_ERR(frag)) 4133e7fbe9cSYan, Zheng continue; 4143e7fbe9cSYan, Zheng } 4151b1bc16dSYan, Zheng if (frag->split_by == 0) 4161b1bc16dSYan, Zheng ci->i_fragtree_nsplits++; 4171b1bc16dSYan, Zheng frag->split_by = split_by; 4183e7fbe9cSYan, Zheng dout(" frag %x split by %d\n", frag->frag, frag->split_by); 419a4b7431fSYan, Zheng prev_frag = frag; 4203e7fbe9cSYan, Zheng } 4213e7fbe9cSYan, Zheng while (rb_node) { 4223e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 4233e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 424a4b7431fSYan, Zheng /* delete stale split/leaf node */ 425a4b7431fSYan, Zheng if (frag->split_by > 0 || 426a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 4273e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 4281b1bc16dSYan, Zheng if (frag->split_by > 0) 4291b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 4303e7fbe9cSYan, Zheng kfree(frag); 4313e7fbe9cSYan, Zheng } 432a4b7431fSYan, Zheng } 4333e7fbe9cSYan, Zheng out_unlock: 4343e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 4353e7fbe9cSYan, Zheng return 0; 4363e7fbe9cSYan, Zheng } 437355da1ebSSage Weil 438355da1ebSSage Weil /* 439355da1ebSSage Weil * initialize a newly allocated inode. 440355da1ebSSage Weil */ 441355da1ebSSage Weil struct inode *ceph_alloc_inode(struct super_block *sb) 442355da1ebSSage Weil { 443355da1ebSSage Weil struct ceph_inode_info *ci; 444355da1ebSSage Weil int i; 445355da1ebSSage Weil 446355da1ebSSage Weil ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); 447355da1ebSSage Weil if (!ci) 448355da1ebSSage Weil return NULL; 449355da1ebSSage Weil 450355da1ebSSage Weil dout("alloc_inode %p\n", &ci->vfs_inode); 451355da1ebSSage Weil 452be655596SSage Weil spin_lock_init(&ci->i_ceph_lock); 453be655596SSage Weil 454355da1ebSSage Weil ci->i_version = 0; 45531c542a1SYan, Zheng ci->i_inline_version = 0; 456355da1ebSSage Weil ci->i_time_warp_seq = 0; 457355da1ebSSage Weil ci->i_ceph_flags = 0; 458fdd4e158SYan, Zheng atomic64_set(&ci->i_ordered_count, 1); 459fdd4e158SYan, Zheng atomic64_set(&ci->i_release_count, 1); 460fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], 0); 461fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], 0); 462355da1ebSSage Weil ci->i_symlink = NULL; 463355da1ebSSage Weil 464fb18a575SLuis Henriques ci->i_max_bytes = 0; 465fb18a575SLuis Henriques ci->i_max_files = 0; 466fb18a575SLuis Henriques 4676c0f3af7SSage Weil memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); 468785892feSJeff Layton memset(&ci->i_cached_layout, 0, sizeof(ci->i_cached_layout)); 46930c156d9SYan, Zheng RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL); 4706c0f3af7SSage Weil 471355da1ebSSage Weil ci->i_fragtree = RB_ROOT; 472355da1ebSSage Weil mutex_init(&ci->i_fragtree_mutex); 473355da1ebSSage Weil 474355da1ebSSage Weil ci->i_xattrs.blob = NULL; 475355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 476355da1ebSSage Weil ci->i_xattrs.dirty = false; 477355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 478355da1ebSSage Weil ci->i_xattrs.count = 0; 479355da1ebSSage Weil ci->i_xattrs.names_size = 0; 480355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 481355da1ebSSage Weil ci->i_xattrs.version = 0; 482355da1ebSSage Weil ci->i_xattrs.index_version = 0; 483355da1ebSSage Weil 484355da1ebSSage Weil ci->i_caps = RB_ROOT; 485355da1ebSSage Weil ci->i_auth_cap = NULL; 486355da1ebSSage Weil ci->i_dirty_caps = 0; 487355da1ebSSage Weil ci->i_flushing_caps = 0; 488355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_dirty_item); 489355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_flushing_item); 490f66fd9f0SYan, Zheng ci->i_prealloc_cap_flush = NULL; 491e4500b5eSYan, Zheng INIT_LIST_HEAD(&ci->i_cap_flush_list); 492355da1ebSSage Weil init_waitqueue_head(&ci->i_cap_wq); 493355da1ebSSage Weil ci->i_hold_caps_max = 0; 494355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_delay_list); 495355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_snaps); 496355da1ebSSage Weil ci->i_head_snapc = NULL; 497355da1ebSSage Weil ci->i_snap_caps = 0; 498355da1ebSSage Weil 499719a2514SYan, Zheng ci->i_last_rd = ci->i_last_wr = jiffies - 3600 * HZ; 500774a6a11SYan, Zheng for (i = 0; i < CEPH_FILE_MODE_BITS; i++) 501355da1ebSSage Weil ci->i_nr_by_mode[i] = 0; 502355da1ebSSage Weil 503b0d7c223SYan, Zheng mutex_init(&ci->i_truncate_mutex); 504355da1ebSSage Weil ci->i_truncate_seq = 0; 505355da1ebSSage Weil ci->i_truncate_size = 0; 506355da1ebSSage Weil ci->i_truncate_pending = 0; 507355da1ebSSage Weil 508355da1ebSSage Weil ci->i_max_size = 0; 509355da1ebSSage Weil ci->i_reported_size = 0; 510355da1ebSSage Weil ci->i_wanted_max_size = 0; 511355da1ebSSage Weil ci->i_requested_max_size = 0; 512355da1ebSSage Weil 513355da1ebSSage Weil ci->i_pin_ref = 0; 514355da1ebSSage Weil ci->i_rd_ref = 0; 515355da1ebSSage Weil ci->i_rdcache_ref = 0; 516355da1ebSSage Weil ci->i_wr_ref = 0; 517d3d0720dSHenry C Chang ci->i_wb_ref = 0; 518f85122afSJeff Layton ci->i_fx_ref = 0; 519355da1ebSSage Weil ci->i_wrbuffer_ref = 0; 520355da1ebSSage Weil ci->i_wrbuffer_ref_head = 0; 52189aa5930SYan, Zheng atomic_set(&ci->i_filelock_ref, 0); 5221e9c2eb6SYan, Zheng atomic_set(&ci->i_shared_gen, 1); 523355da1ebSSage Weil ci->i_rdcache_gen = 0; 524355da1ebSSage Weil ci->i_rdcache_revoking = 0; 525355da1ebSSage Weil 526355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_dirops); 52768cd5b4bSYan, Zheng INIT_LIST_HEAD(&ci->i_unsafe_iops); 528355da1ebSSage Weil spin_lock_init(&ci->i_unsafe_lock); 529355da1ebSSage Weil 530355da1ebSSage Weil ci->i_snap_realm = NULL; 531355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_realm_item); 532355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_flush_item); 533355da1ebSSage Weil 5341cf89a8dSYan, Zheng INIT_WORK(&ci->i_work, ceph_inode_work); 5351cf89a8dSYan, Zheng ci->i_work_mask = 0; 536245ce991SJeff Layton memset(&ci->i_btime, '\0', sizeof(ci->i_btime)); 537355da1ebSSage Weil 53899ccbd22SMilosz Tanski ceph_fscache_inode_init(ci); 53999ccbd22SMilosz Tanski 540f4b97866SYan, Zheng ci->i_meta_err = 0; 541f4b97866SYan, Zheng 542355da1ebSSage Weil return &ci->vfs_inode; 543355da1ebSSage Weil } 544355da1ebSSage Weil 545cfa6d412SAl Viro void ceph_free_inode(struct inode *inode) 546fa0d7e3dSNick Piggin { 547fa0d7e3dSNick Piggin struct ceph_inode_info *ci = ceph_inode(inode); 548fa0d7e3dSNick Piggin 549daf5cc27SAl Viro kfree(ci->i_symlink); 550fa0d7e3dSNick Piggin kmem_cache_free(ceph_inode_cachep, ci); 551fa0d7e3dSNick Piggin } 552fa0d7e3dSNick Piggin 55387bc5b89SYan, Zheng void ceph_evict_inode(struct inode *inode) 554355da1ebSSage Weil { 555355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 5561dd8d470SXiubo Li struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); 557355da1ebSSage Weil struct ceph_inode_frag *frag; 558355da1ebSSage Weil struct rb_node *n; 559355da1ebSSage Weil 56087bc5b89SYan, Zheng dout("evict_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); 56187bc5b89SYan, Zheng 5621dd8d470SXiubo Li percpu_counter_dec(&mdsc->metric.total_inodes); 5631dd8d470SXiubo Li 56487bc5b89SYan, Zheng truncate_inode_pages_final(&inode->i_data); 56587bc5b89SYan, Zheng clear_inode(inode); 566355da1ebSSage Weil 56799ccbd22SMilosz Tanski ceph_fscache_unregister_inode_cookie(ci); 56899ccbd22SMilosz Tanski 569d6e47819SYan, Zheng __ceph_remove_caps(ci); 570355da1ebSSage Weil 571d557c48dSLuis Henriques if (__ceph_has_any_quota(ci)) 572d557c48dSLuis Henriques ceph_adjust_quota_realms_count(inode, false); 573d557c48dSLuis Henriques 5748b218b8aSSage Weil /* 5758b218b8aSSage Weil * we may still have a snap_realm reference if there are stray 576d9df2783SYan, Zheng * caps in i_snap_caps. 5778b218b8aSSage Weil */ 5788b218b8aSSage Weil if (ci->i_snap_realm) { 57975c9627eSYan, Zheng if (ceph_snap(inode) == CEPH_NOSNAP) { 5808b218b8aSSage Weil struct ceph_snap_realm *realm = ci->i_snap_realm; 58175c9627eSYan, Zheng dout(" dropping residual ref to snap realm %p\n", 58275c9627eSYan, Zheng realm); 5838b218b8aSSage Weil spin_lock(&realm->inodes_with_caps_lock); 5848b218b8aSSage Weil list_del_init(&ci->i_snap_realm_item); 585e3161f17SLuis Henriques ci->i_snap_realm = NULL; 586e3161f17SLuis Henriques if (realm->ino == ci->i_vino.ino) 587e3161f17SLuis Henriques realm->inode = NULL; 5888b218b8aSSage Weil spin_unlock(&realm->inodes_with_caps_lock); 5898b218b8aSSage Weil ceph_put_snap_realm(mdsc, realm); 59075c9627eSYan, Zheng } else { 59175c9627eSYan, Zheng ceph_put_snapid_map(mdsc, ci->i_snapid_map); 59275c9627eSYan, Zheng ci->i_snap_realm = NULL; 59375c9627eSYan, Zheng } 5948b218b8aSSage Weil } 5958b218b8aSSage Weil 596355da1ebSSage Weil while ((n = rb_first(&ci->i_fragtree)) != NULL) { 597355da1ebSSage Weil frag = rb_entry(n, struct ceph_inode_frag, node); 598355da1ebSSage Weil rb_erase(n, &ci->i_fragtree); 599355da1ebSSage Weil kfree(frag); 600355da1ebSSage Weil } 6011b1bc16dSYan, Zheng ci->i_fragtree_nsplits = 0; 602355da1ebSSage Weil 603355da1ebSSage Weil __ceph_destroy_xattrs(ci); 604b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 605355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 606b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 607355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 608355da1ebSSage Weil 609779fe0fbSYan, Zheng ceph_put_string(rcu_dereference_raw(ci->i_layout.pool_ns)); 610785892feSJeff Layton ceph_put_string(rcu_dereference_raw(ci->i_cached_layout.pool_ns)); 611355da1ebSSage Weil } 612355da1ebSSage Weil 613224a7542SYan, Zheng static inline blkcnt_t calc_inode_blocks(u64 size) 614224a7542SYan, Zheng { 615224a7542SYan, Zheng return (size + (1<<9) - 1) >> 9; 616224a7542SYan, Zheng } 617224a7542SYan, Zheng 618355da1ebSSage Weil /* 619355da1ebSSage Weil * Helpers to fill in size, ctime, mtime, and atime. We have to be 620355da1ebSSage Weil * careful because either the client or MDS may have more up to date 621355da1ebSSage Weil * info, depending on which capabilities are held, and whether 622355da1ebSSage Weil * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime 623355da1ebSSage Weil * and size are monotonically increasing, except when utimes() or 624355da1ebSSage Weil * truncate() increments the corresponding _seq values.) 625355da1ebSSage Weil */ 626355da1ebSSage Weil int ceph_fill_file_size(struct inode *inode, int issued, 627355da1ebSSage Weil u32 truncate_seq, u64 truncate_size, u64 size) 628355da1ebSSage Weil { 629355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 630355da1ebSSage Weil int queue_trunc = 0; 631355da1ebSSage Weil 632355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || 633355da1ebSSage Weil (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { 634355da1ebSSage Weil dout("size %lld -> %llu\n", inode->i_size, size); 635a3d714c3SYan, Zheng if (size > 0 && S_ISDIR(inode->i_mode)) { 636a3d714c3SYan, Zheng pr_err("fill_file_size non-zero size for directory\n"); 637a3d714c3SYan, Zheng size = 0; 638a3d714c3SYan, Zheng } 63999c88e69SYan, Zheng i_size_write(inode, size); 640224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 641355da1ebSSage Weil ci->i_reported_size = size; 642355da1ebSSage Weil if (truncate_seq != ci->i_truncate_seq) { 643355da1ebSSage Weil dout("truncate_seq %u -> %u\n", 644355da1ebSSage Weil ci->i_truncate_seq, truncate_seq); 645355da1ebSSage Weil ci->i_truncate_seq = truncate_seq; 646b0d7c223SYan, Zheng 647b0d7c223SYan, Zheng /* the MDS should have revoked these caps */ 648b0d7c223SYan, Zheng WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | 649b0d7c223SYan, Zheng CEPH_CAP_FILE_RD | 650b0d7c223SYan, Zheng CEPH_CAP_FILE_WR | 651b0d7c223SYan, Zheng CEPH_CAP_FILE_LAZYIO)); 6523d497d85SYehuda Sadeh /* 6533d497d85SYehuda Sadeh * If we hold relevant caps, or in the case where we're 6543d497d85SYehuda Sadeh * not the only client referencing this file and we 6553d497d85SYehuda Sadeh * don't hold those caps, then we need to check whether 6563d497d85SYehuda Sadeh * the file is either opened or mmaped 6573d497d85SYehuda Sadeh */ 658b0d7c223SYan, Zheng if ((issued & (CEPH_CAP_FILE_CACHE| 659b0d7c223SYan, Zheng CEPH_CAP_FILE_BUFFER)) || 6603d497d85SYehuda Sadeh mapping_mapped(inode->i_mapping) || 661719a2514SYan, Zheng __ceph_is_file_opened(ci)) { 662355da1ebSSage Weil ci->i_truncate_pending++; 663355da1ebSSage Weil queue_trunc = 1; 664355da1ebSSage Weil } 665355da1ebSSage Weil } 666355da1ebSSage Weil } 667355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && 668355da1ebSSage Weil ci->i_truncate_size != truncate_size) { 669355da1ebSSage Weil dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, 670355da1ebSSage Weil truncate_size); 671355da1ebSSage Weil ci->i_truncate_size = truncate_size; 672355da1ebSSage Weil } 67399ccbd22SMilosz Tanski 67499ccbd22SMilosz Tanski if (queue_trunc) 67599ccbd22SMilosz Tanski ceph_fscache_invalidate(inode); 67699ccbd22SMilosz Tanski 677355da1ebSSage Weil return queue_trunc; 678355da1ebSSage Weil } 679355da1ebSSage Weil 680355da1ebSSage Weil void ceph_fill_file_time(struct inode *inode, int issued, 6819bbeab41SArnd Bergmann u64 time_warp_seq, struct timespec64 *ctime, 6829bbeab41SArnd Bergmann struct timespec64 *mtime, struct timespec64 *atime) 683355da1ebSSage Weil { 684355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 685355da1ebSSage Weil int warn = 0; 686355da1ebSSage Weil 687355da1ebSSage Weil if (issued & (CEPH_CAP_FILE_EXCL| 688355da1ebSSage Weil CEPH_CAP_FILE_WR| 689d8672d64SSage Weil CEPH_CAP_FILE_BUFFER| 690d8672d64SSage Weil CEPH_CAP_AUTH_EXCL| 691d8672d64SSage Weil CEPH_CAP_XATTR_EXCL)) { 692ffdeec7aSYan, Zheng if (ci->i_version == 0 || 6939bbeab41SArnd Bergmann timespec64_compare(ctime, &inode->i_ctime) > 0) { 69413442b03SDeepa Dinamani dout("ctime %lld.%09ld -> %lld.%09ld inc w/ cap\n", 6959bbeab41SArnd Bergmann inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 6969bbeab41SArnd Bergmann ctime->tv_sec, ctime->tv_nsec); 6979bbeab41SArnd Bergmann inode->i_ctime = *ctime; 698355da1ebSSage Weil } 699ffdeec7aSYan, Zheng if (ci->i_version == 0 || 700ffdeec7aSYan, Zheng ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { 701355da1ebSSage Weil /* the MDS did a utimes() */ 70213442b03SDeepa Dinamani dout("mtime %lld.%09ld -> %lld.%09ld " 703355da1ebSSage Weil "tw %d -> %d\n", 7049bbeab41SArnd Bergmann inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 7059bbeab41SArnd Bergmann mtime->tv_sec, mtime->tv_nsec, 706355da1ebSSage Weil ci->i_time_warp_seq, (int)time_warp_seq); 707355da1ebSSage Weil 7089bbeab41SArnd Bergmann inode->i_mtime = *mtime; 7099bbeab41SArnd Bergmann inode->i_atime = *atime; 710355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 711355da1ebSSage Weil } else if (time_warp_seq == ci->i_time_warp_seq) { 712355da1ebSSage Weil /* nobody did utimes(); take the max */ 7139bbeab41SArnd Bergmann if (timespec64_compare(mtime, &inode->i_mtime) > 0) { 71413442b03SDeepa Dinamani dout("mtime %lld.%09ld -> %lld.%09ld inc\n", 7159bbeab41SArnd Bergmann inode->i_mtime.tv_sec, 716355da1ebSSage Weil inode->i_mtime.tv_nsec, 7179bbeab41SArnd Bergmann mtime->tv_sec, mtime->tv_nsec); 7189bbeab41SArnd Bergmann inode->i_mtime = *mtime; 719355da1ebSSage Weil } 7209bbeab41SArnd Bergmann if (timespec64_compare(atime, &inode->i_atime) > 0) { 72113442b03SDeepa Dinamani dout("atime %lld.%09ld -> %lld.%09ld inc\n", 7229bbeab41SArnd Bergmann inode->i_atime.tv_sec, 723355da1ebSSage Weil inode->i_atime.tv_nsec, 7249bbeab41SArnd Bergmann atime->tv_sec, atime->tv_nsec); 7259bbeab41SArnd Bergmann inode->i_atime = *atime; 726355da1ebSSage Weil } 727355da1ebSSage Weil } else if (issued & CEPH_CAP_FILE_EXCL) { 728355da1ebSSage Weil /* we did a utimes(); ignore mds values */ 729355da1ebSSage Weil } else { 730355da1ebSSage Weil warn = 1; 731355da1ebSSage Weil } 732355da1ebSSage Weil } else { 733d8672d64SSage Weil /* we have no write|excl caps; whatever the MDS says is true */ 734355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { 7359bbeab41SArnd Bergmann inode->i_ctime = *ctime; 7369bbeab41SArnd Bergmann inode->i_mtime = *mtime; 7379bbeab41SArnd Bergmann inode->i_atime = *atime; 738355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 739355da1ebSSage Weil } else { 740355da1ebSSage Weil warn = 1; 741355da1ebSSage Weil } 742355da1ebSSage Weil } 743355da1ebSSage Weil if (warn) /* time_warp_seq shouldn't go backwards */ 744355da1ebSSage Weil dout("%p mds time_warp_seq %llu < %u\n", 745355da1ebSSage Weil inode, time_warp_seq, ci->i_time_warp_seq); 746355da1ebSSage Weil } 747355da1ebSSage Weil 748355da1ebSSage Weil /* 749355da1ebSSage Weil * Populate an inode based on info from mds. May be called on new or 750355da1ebSSage Weil * existing inodes. 751355da1ebSSage Weil */ 752966c7160SJeff Layton int ceph_fill_inode(struct inode *inode, struct page *locked_page, 753355da1ebSSage Weil struct ceph_mds_reply_info_in *iinfo, 754355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo, 75557c21994SJeff Layton struct ceph_mds_session *session, int cap_fmode, 756355da1ebSSage Weil struct ceph_cap_reservation *caps_reservation) 757355da1ebSSage Weil { 7582678da88SXiubo Li struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); 759355da1ebSSage Weil struct ceph_mds_reply_inode *info = iinfo->in; 760355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 7612af54a72SYan, Zheng int issued, new_issued, info_caps; 7629bbeab41SArnd Bergmann struct timespec64 mtime, atime, ctime; 763355da1ebSSage Weil struct ceph_buffer *xattr_blob = NULL; 764af8a85a4SLuis Henriques struct ceph_buffer *old_blob = NULL; 765779fe0fbSYan, Zheng struct ceph_string *pool_ns = NULL; 766d9df2783SYan, Zheng struct ceph_cap *new_cap = NULL; 767355da1ebSSage Weil int err = 0; 768d9df2783SYan, Zheng bool wake = false; 769f98a128aSYan, Zheng bool queue_trunc = false; 770f98a128aSYan, Zheng bool new_version = false; 77131c542a1SYan, Zheng bool fill_inline = false; 772355da1ebSSage Weil 773966c7160SJeff Layton dout("%s %p ino %llx.%llx v %llu had %llu\n", __func__, 774355da1ebSSage Weil inode, ceph_vinop(inode), le64_to_cpu(info->version), 775355da1ebSSage Weil ci->i_version); 776355da1ebSSage Weil 7772af54a72SYan, Zheng info_caps = le32_to_cpu(info->cap.caps); 7782af54a72SYan, Zheng 779d9df2783SYan, Zheng /* prealloc new cap struct */ 7809a6bed4fSJeff Layton if (info_caps && ceph_snap(inode) == CEPH_NOSNAP) { 781d9df2783SYan, Zheng new_cap = ceph_get_cap(mdsc, caps_reservation); 7829a6bed4fSJeff Layton if (!new_cap) 7839a6bed4fSJeff Layton return -ENOMEM; 7849a6bed4fSJeff Layton } 785d9df2783SYan, Zheng 786355da1ebSSage Weil /* 787355da1ebSSage Weil * prealloc xattr data, if it looks like we'll need it. only 788355da1ebSSage Weil * if len > 4 (meaning there are actually xattrs; the first 4 789355da1ebSSage Weil * bytes are the xattr count). 790355da1ebSSage Weil */ 791355da1ebSSage Weil if (iinfo->xattr_len > 4) { 792b6c1d5b8SSage Weil xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); 793355da1ebSSage Weil if (!xattr_blob) 794966c7160SJeff Layton pr_err("%s ENOMEM xattr blob %d bytes\n", __func__, 795355da1ebSSage Weil iinfo->xattr_len); 796355da1ebSSage Weil } 797355da1ebSSage Weil 798779fe0fbSYan, Zheng if (iinfo->pool_ns_len > 0) 799779fe0fbSYan, Zheng pool_ns = ceph_find_or_create_string(iinfo->pool_ns_data, 800779fe0fbSYan, Zheng iinfo->pool_ns_len); 801779fe0fbSYan, Zheng 80275c9627eSYan, Zheng if (ceph_snap(inode) != CEPH_NOSNAP && !ci->i_snapid_map) 80375c9627eSYan, Zheng ci->i_snapid_map = ceph_get_snapid_map(mdsc, ceph_snap(inode)); 80475c9627eSYan, Zheng 805be655596SSage Weil spin_lock(&ci->i_ceph_lock); 806355da1ebSSage Weil 807355da1ebSSage Weil /* 808355da1ebSSage Weil * provided version will be odd if inode value is projected, 8098bd59e01SSage Weil * even if stable. skip the update if we have newer stable 8108bd59e01SSage Weil * info (ours>=theirs, e.g. due to racing mds replies), unless 8118bd59e01SSage Weil * we are getting projected (unstable) info (in which case the 8128bd59e01SSage Weil * version is odd, and we want ours>theirs). 8138bd59e01SSage Weil * us them 8148bd59e01SSage Weil * 2 2 skip 8158bd59e01SSage Weil * 3 2 skip 8168bd59e01SSage Weil * 3 3 update 817355da1ebSSage Weil */ 818f98a128aSYan, Zheng if (ci->i_version == 0 || 819f98a128aSYan, Zheng ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 820f98a128aSYan, Zheng le64_to_cpu(info->version) > (ci->i_version & ~1))) 821f98a128aSYan, Zheng new_version = true; 822355da1ebSSage Weil 823a35ead31SJeff Layton /* Update change_attribute */ 824a35ead31SJeff Layton inode_set_max_iversion_raw(inode, iinfo->change_attr); 825a35ead31SJeff Layton 8262af54a72SYan, Zheng __ceph_caps_issued(ci, &issued); 8272af54a72SYan, Zheng issued |= __ceph_caps_dirty(ci); 8282af54a72SYan, Zheng new_issued = ~issued & info_caps; 829355da1ebSSage Weil 830355da1ebSSage Weil /* update inode */ 831355da1ebSSage Weil inode->i_rdev = le32_to_cpu(info->rdev); 83275067034SLuis Henriques /* directories have fl_stripe_unit set to zero */ 83375067034SLuis Henriques if (le32_to_cpu(info->layout.fl_stripe_unit)) 83475067034SLuis Henriques inode->i_blkbits = 83575067034SLuis Henriques fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; 83675067034SLuis Henriques else 83775067034SLuis Henriques inode->i_blkbits = CEPH_BLOCK_SHIFT; 838355da1ebSSage Weil 839d557c48dSLuis Henriques __ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files); 840fb18a575SLuis Henriques 841f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && 842f98a128aSYan, Zheng (issued & CEPH_CAP_AUTH_EXCL) == 0) { 843355da1ebSSage Weil inode->i_mode = le32_to_cpu(info->mode); 844ab871b90SEric W. Biederman inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); 845ab871b90SEric W. Biederman inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); 846355da1ebSSage Weil dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, 847bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 848bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid)); 849245ce991SJeff Layton ceph_decode_timespec64(&ci->i_btime, &iinfo->btime); 850193e7b37SDavid Disseldorp ceph_decode_timespec64(&ci->i_snap_btime, &iinfo->snap_btime); 851355da1ebSSage Weil } 852355da1ebSSage Weil 853f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && 854f98a128aSYan, Zheng (issued & CEPH_CAP_LINK_EXCL) == 0) 855bfe86848SMiklos Szeredi set_nlink(inode, le32_to_cpu(info->nlink)); 856355da1ebSSage Weil 857f98a128aSYan, Zheng if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { 858355da1ebSSage Weil /* be careful with mtime, atime, size */ 8599bbeab41SArnd Bergmann ceph_decode_timespec64(&atime, &info->atime); 8609bbeab41SArnd Bergmann ceph_decode_timespec64(&mtime, &info->mtime); 8619bbeab41SArnd Bergmann ceph_decode_timespec64(&ctime, &info->ctime); 862f98a128aSYan, Zheng ceph_fill_file_time(inode, issued, 863f98a128aSYan, Zheng le32_to_cpu(info->time_warp_seq), 864f98a128aSYan, Zheng &ctime, &mtime, &atime); 865f98a128aSYan, Zheng } 866f98a128aSYan, Zheng 8672af54a72SYan, Zheng if (new_version || (info_caps & CEPH_CAP_FILE_SHARED)) { 8682af54a72SYan, Zheng ci->i_files = le64_to_cpu(info->files); 8692af54a72SYan, Zheng ci->i_subdirs = le64_to_cpu(info->subdirs); 8702af54a72SYan, Zheng } 8712af54a72SYan, Zheng 872f98a128aSYan, Zheng if (new_version || 873f98a128aSYan, Zheng (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { 8747627151eSYan, Zheng s64 old_pool = ci->i_layout.pool_id; 875779fe0fbSYan, Zheng struct ceph_string *old_ns; 876779fe0fbSYan, Zheng 8777627151eSYan, Zheng ceph_file_layout_from_legacy(&ci->i_layout, &info->layout); 878779fe0fbSYan, Zheng old_ns = rcu_dereference_protected(ci->i_layout.pool_ns, 879779fe0fbSYan, Zheng lockdep_is_held(&ci->i_ceph_lock)); 880779fe0fbSYan, Zheng rcu_assign_pointer(ci->i_layout.pool_ns, pool_ns); 881779fe0fbSYan, Zheng 882779fe0fbSYan, Zheng if (ci->i_layout.pool_id != old_pool || pool_ns != old_ns) 88310183a69SYan, Zheng ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; 88410183a69SYan, Zheng 885779fe0fbSYan, Zheng pool_ns = old_ns; 886f98a128aSYan, Zheng 887355da1ebSSage Weil queue_trunc = ceph_fill_file_size(inode, issued, 888355da1ebSSage Weil le32_to_cpu(info->truncate_seq), 889355da1ebSSage Weil le64_to_cpu(info->truncate_size), 890355da1ebSSage Weil le64_to_cpu(info->size)); 891f98a128aSYan, Zheng /* only update max_size on auth cap */ 892f98a128aSYan, Zheng if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 893f98a128aSYan, Zheng ci->i_max_size != le64_to_cpu(info->max_size)) { 894f98a128aSYan, Zheng dout("max_size %lld -> %llu\n", ci->i_max_size, 895f98a128aSYan, Zheng le64_to_cpu(info->max_size)); 896f98a128aSYan, Zheng ci->i_max_size = le64_to_cpu(info->max_size); 897f98a128aSYan, Zheng } 898f98a128aSYan, Zheng } 899355da1ebSSage Weil 90049a9f4f6SYan, Zheng /* layout and rstat are not tracked by capability, update them if 90149a9f4f6SYan, Zheng * the inode info is from auth mds */ 90249a9f4f6SYan, Zheng if (new_version || (info->cap.flags & CEPH_CAP_FLAG_AUTH)) { 90349a9f4f6SYan, Zheng if (S_ISDIR(inode->i_mode)) { 90449a9f4f6SYan, Zheng ci->i_dir_layout = iinfo->dir_layout; 90549a9f4f6SYan, Zheng ci->i_rbytes = le64_to_cpu(info->rbytes); 90649a9f4f6SYan, Zheng ci->i_rfiles = le64_to_cpu(info->rfiles); 90749a9f4f6SYan, Zheng ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); 90808796873SYan, Zheng ci->i_dir_pin = iinfo->dir_pin; 9099bbeab41SArnd Bergmann ceph_decode_timespec64(&ci->i_rctime, &info->rctime); 91049a9f4f6SYan, Zheng } 91149a9f4f6SYan, Zheng } 91249a9f4f6SYan, Zheng 913355da1ebSSage Weil /* xattrs */ 914355da1ebSSage Weil /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ 915508b32d8SYan, Zheng if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && 916355da1ebSSage Weil le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { 917355da1ebSSage Weil if (ci->i_xattrs.blob) 918af8a85a4SLuis Henriques old_blob = ci->i_xattrs.blob; 919355da1ebSSage Weil ci->i_xattrs.blob = xattr_blob; 920355da1ebSSage Weil if (xattr_blob) 921355da1ebSSage Weil memcpy(ci->i_xattrs.blob->vec.iov_base, 922355da1ebSSage Weil iinfo->xattr_data, iinfo->xattr_len); 923355da1ebSSage Weil ci->i_xattrs.version = le64_to_cpu(info->xattr_version); 9247221fe4cSGuangliang Zhao ceph_forget_all_cached_acls(inode); 925ac6713ccSYan, Zheng ceph_security_invalidate_secctx(inode); 926a6424e48SSage Weil xattr_blob = NULL; 927355da1ebSSage Weil } 928355da1ebSSage Weil 929ffdeec7aSYan, Zheng /* finally update i_version */ 930aae1a442SYan, Zheng if (le64_to_cpu(info->version) > ci->i_version) 931ffdeec7aSYan, Zheng ci->i_version = le64_to_cpu(info->version); 932ffdeec7aSYan, Zheng 933355da1ebSSage Weil inode->i_mapping->a_ops = &ceph_aops; 934355da1ebSSage Weil 935355da1ebSSage Weil switch (inode->i_mode & S_IFMT) { 936355da1ebSSage Weil case S_IFIFO: 937355da1ebSSage Weil case S_IFBLK: 938355da1ebSSage Weil case S_IFCHR: 939355da1ebSSage Weil case S_IFSOCK: 9405ba72e60SYan, Zheng inode->i_blkbits = PAGE_SHIFT; 941355da1ebSSage Weil init_special_inode(inode, inode->i_mode, inode->i_rdev); 942355da1ebSSage Weil inode->i_op = &ceph_file_iops; 943355da1ebSSage Weil break; 944355da1ebSSage Weil case S_IFREG: 945355da1ebSSage Weil inode->i_op = &ceph_file_iops; 946355da1ebSSage Weil inode->i_fop = &ceph_file_fops; 947355da1ebSSage Weil break; 948355da1ebSSage Weil case S_IFLNK: 949355da1ebSSage Weil inode->i_op = &ceph_symlink_iops; 950355da1ebSSage Weil if (!ci->i_symlink) { 951810339ecSXi Wang u32 symlen = iinfo->symlink_len; 952355da1ebSSage Weil char *sym; 953355da1ebSSage Weil 954be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 955355da1ebSSage Weil 956224a7542SYan, Zheng if (symlen != i_size_read(inode)) { 957966c7160SJeff Layton pr_err("%s %llx.%llx BAD symlink " 958966c7160SJeff Layton "size %lld\n", __func__, 959966c7160SJeff Layton ceph_vinop(inode), 960224a7542SYan, Zheng i_size_read(inode)); 961224a7542SYan, Zheng i_size_write(inode, symlen); 962224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(symlen); 963224a7542SYan, Zheng } 964810339ecSXi Wang 965355da1ebSSage Weil err = -ENOMEM; 966810339ecSXi Wang sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); 967355da1ebSSage Weil if (!sym) 968355da1ebSSage Weil goto out; 969355da1ebSSage Weil 970be655596SSage Weil spin_lock(&ci->i_ceph_lock); 971355da1ebSSage Weil if (!ci->i_symlink) 972355da1ebSSage Weil ci->i_symlink = sym; 973355da1ebSSage Weil else 974355da1ebSSage Weil kfree(sym); /* lost a race */ 975355da1ebSSage Weil } 976ac194dccSAl Viro inode->i_link = ci->i_symlink; 977355da1ebSSage Weil break; 978355da1ebSSage Weil case S_IFDIR: 979355da1ebSSage Weil inode->i_op = &ceph_dir_iops; 980355da1ebSSage Weil inode->i_fop = &ceph_dir_fops; 981355da1ebSSage Weil break; 982355da1ebSSage Weil default: 983966c7160SJeff Layton pr_err("%s %llx.%llx BAD mode 0%o\n", __func__, 984355da1ebSSage Weil ceph_vinop(inode), inode->i_mode); 985355da1ebSSage Weil } 986355da1ebSSage Weil 987355da1ebSSage Weil /* were we issued a capability? */ 9882af54a72SYan, Zheng if (info_caps) { 989355da1ebSSage Weil if (ceph_snap(inode) == CEPH_NOSNAP) { 990355da1ebSSage Weil ceph_add_cap(inode, session, 991355da1ebSSage Weil le64_to_cpu(info->cap.cap_id), 992135e671eSYan, Zheng info_caps, 993355da1ebSSage Weil le32_to_cpu(info->cap.wanted), 994355da1ebSSage Weil le32_to_cpu(info->cap.seq), 995355da1ebSSage Weil le32_to_cpu(info->cap.mseq), 996355da1ebSSage Weil le64_to_cpu(info->cap.realm), 997d9df2783SYan, Zheng info->cap.flags, &new_cap); 9982f92b3d0SYan, Zheng 9992f92b3d0SYan, Zheng /* set dir completion flag? */ 10002f92b3d0SYan, Zheng if (S_ISDIR(inode->i_mode) && 10012f92b3d0SYan, Zheng ci->i_files == 0 && ci->i_subdirs == 0 && 10022af54a72SYan, Zheng (info_caps & CEPH_CAP_FILE_SHARED) && 10032f92b3d0SYan, Zheng (issued & CEPH_CAP_FILE_EXCL) == 0 && 10042f92b3d0SYan, Zheng !__ceph_dir_is_complete(ci)) { 10052f92b3d0SYan, Zheng dout(" marking %p complete (empty)\n", inode); 1006fdd4e158SYan, Zheng i_size_write(inode, 0); 10072f92b3d0SYan, Zheng __ceph_dir_set_complete(ci, 1008fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count), 1009fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count)); 10102f92b3d0SYan, Zheng } 10112f92b3d0SYan, Zheng 1012d9df2783SYan, Zheng wake = true; 1013355da1ebSSage Weil } else { 1014355da1ebSSage Weil dout(" %p got snap_caps %s\n", inode, 10152af54a72SYan, Zheng ceph_cap_string(info_caps)); 10162af54a72SYan, Zheng ci->i_snap_caps |= info_caps; 1017355da1ebSSage Weil } 1018355da1ebSSage Weil } 101931c542a1SYan, Zheng 102031c542a1SYan, Zheng if (iinfo->inline_version > 0 && 102131c542a1SYan, Zheng iinfo->inline_version >= ci->i_inline_version) { 102231c542a1SYan, Zheng int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; 102331c542a1SYan, Zheng ci->i_inline_version = iinfo->inline_version; 102431c542a1SYan, Zheng if (ci->i_inline_version != CEPH_INLINE_NONE && 10252af54a72SYan, Zheng (locked_page || (info_caps & cache_caps))) 102631c542a1SYan, Zheng fill_inline = true; 102731c542a1SYan, Zheng } 102831c542a1SYan, Zheng 1029719a2514SYan, Zheng if (cap_fmode >= 0) { 1030719a2514SYan, Zheng if (!info_caps) 1031719a2514SYan, Zheng pr_warn("mds issued no caps on %llx.%llx\n", 1032719a2514SYan, Zheng ceph_vinop(inode)); 1033719a2514SYan, Zheng __ceph_touch_fmode(ci, mdsc, cap_fmode); 1034719a2514SYan, Zheng } 1035719a2514SYan, Zheng 1036355da1ebSSage Weil spin_unlock(&ci->i_ceph_lock); 1037355da1ebSSage Weil 103831c542a1SYan, Zheng if (fill_inline) 103901deead0SYan, Zheng ceph_fill_inline_data(inode, locked_page, 104031c542a1SYan, Zheng iinfo->inline_data, iinfo->inline_len); 104131c542a1SYan, Zheng 1042d9df2783SYan, Zheng if (wake) 1043d9df2783SYan, Zheng wake_up_all(&ci->i_cap_wq); 1044d9df2783SYan, Zheng 1045355da1ebSSage Weil /* queue truncate if we saw i_size decrease */ 1046355da1ebSSage Weil if (queue_trunc) 1047355da1ebSSage Weil ceph_queue_vmtruncate(inode); 1048355da1ebSSage Weil 1049355da1ebSSage Weil /* populate frag tree */ 10503e7fbe9cSYan, Zheng if (S_ISDIR(inode->i_mode)) 10513e7fbe9cSYan, Zheng ceph_fill_fragtree(inode, &info->fragtree, dirinfo); 1052355da1ebSSage Weil 1053355da1ebSSage Weil /* update delegation info? */ 1054355da1ebSSage Weil if (dirinfo) 1055355da1ebSSage Weil ceph_fill_dirfrag(inode, dirinfo); 1056355da1ebSSage Weil 1057355da1ebSSage Weil err = 0; 1058355da1ebSSage Weil out: 1059d9df2783SYan, Zheng if (new_cap) 1060d9df2783SYan, Zheng ceph_put_cap(mdsc, new_cap); 1061af8a85a4SLuis Henriques ceph_buffer_put(old_blob); 1062355da1ebSSage Weil ceph_buffer_put(xattr_blob); 1063779fe0fbSYan, Zheng ceph_put_string(pool_ns); 1064355da1ebSSage Weil return err; 1065355da1ebSSage Weil } 1066355da1ebSSage Weil 1067355da1ebSSage Weil /* 1068543212b3SYan, Zheng * caller should hold session s_mutex and dentry->d_lock. 1069355da1ebSSage Weil */ 1070543212b3SYan, Zheng static void __update_dentry_lease(struct inode *dir, struct dentry *dentry, 1071355da1ebSSage Weil struct ceph_mds_reply_lease *lease, 1072355da1ebSSage Weil struct ceph_mds_session *session, 1073f5d55f03SJeff Layton unsigned long from_time, 1074543212b3SYan, Zheng struct ceph_mds_session **old_lease_session) 1075355da1ebSSage Weil { 1076355da1ebSSage Weil struct ceph_dentry_info *di = ceph_dentry(dentry); 1077f5e17aedSJeff Layton unsigned mask = le16_to_cpu(lease->mask); 1078355da1ebSSage Weil long unsigned duration = le32_to_cpu(lease->duration_ms); 1079355da1ebSSage Weil long unsigned ttl = from_time + (duration * HZ) / 1000; 1080355da1ebSSage Weil long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; 1081355da1ebSSage Weil 10822f90b852SSage Weil dout("update_dentry_lease %p duration %lu ms ttl %lu\n", 10832f90b852SSage Weil dentry, duration, ttl); 1084355da1ebSSage Weil 108518fc8abdSAl Viro /* only track leases on regular dentries */ 108618fc8abdSAl Viro if (ceph_snap(dir) != CEPH_NOSNAP) 1087543212b3SYan, Zheng return; 108818fc8abdSAl Viro 1089f5e17aedSJeff Layton if (mask & CEPH_LEASE_PRIMARY_LINK) 1090f5e17aedSJeff Layton di->flags |= CEPH_DENTRY_PRIMARY_LINK; 1091f5e17aedSJeff Layton else 1092f5e17aedSJeff Layton di->flags &= ~CEPH_DENTRY_PRIMARY_LINK; 1093f5e17aedSJeff Layton 109497aeb6bfSYan, Zheng di->lease_shared_gen = atomic_read(&ceph_inode(dir)->i_shared_gen); 1095f5e17aedSJeff Layton if (!(mask & CEPH_LEASE_VALID)) { 109637c4efc1SYan, Zheng __ceph_dentry_dir_lease_touch(di); 1097543212b3SYan, Zheng return; 109837c4efc1SYan, Zheng } 1099355da1ebSSage Weil 1100355da1ebSSage Weil if (di->lease_gen == session->s_cap_gen && 11019b16f03cSMiklos Szeredi time_before(ttl, di->time)) 1102543212b3SYan, Zheng return; /* we already have a newer lease. */ 1103355da1ebSSage Weil 1104481f001fSYan, Zheng if (di->lease_session && di->lease_session != session) { 1105543212b3SYan, Zheng *old_lease_session = di->lease_session; 1106481f001fSYan, Zheng di->lease_session = NULL; 1107481f001fSYan, Zheng } 1108355da1ebSSage Weil 1109355da1ebSSage Weil if (!di->lease_session) 1110355da1ebSSage Weil di->lease_session = ceph_get_mds_session(session); 1111355da1ebSSage Weil di->lease_gen = session->s_cap_gen; 1112355da1ebSSage Weil di->lease_seq = le32_to_cpu(lease->seq); 1113355da1ebSSage Weil di->lease_renew_after = half_ttl; 1114355da1ebSSage Weil di->lease_renew_from = 0; 11159b16f03cSMiklos Szeredi di->time = ttl; 111637c4efc1SYan, Zheng 111737c4efc1SYan, Zheng __ceph_dentry_lease_touch(di); 1118543212b3SYan, Zheng } 1119543212b3SYan, Zheng 1120543212b3SYan, Zheng static inline void update_dentry_lease(struct inode *dir, struct dentry *dentry, 1121543212b3SYan, Zheng struct ceph_mds_reply_lease *lease, 1122543212b3SYan, Zheng struct ceph_mds_session *session, 1123543212b3SYan, Zheng unsigned long from_time) 1124543212b3SYan, Zheng { 1125543212b3SYan, Zheng struct ceph_mds_session *old_lease_session = NULL; 1126543212b3SYan, Zheng spin_lock(&dentry->d_lock); 1127543212b3SYan, Zheng __update_dentry_lease(dir, dentry, lease, session, from_time, 1128543212b3SYan, Zheng &old_lease_session); 1129543212b3SYan, Zheng spin_unlock(&dentry->d_lock); 1130543212b3SYan, Zheng if (old_lease_session) 1131543212b3SYan, Zheng ceph_put_mds_session(old_lease_session); 1132543212b3SYan, Zheng } 1133543212b3SYan, Zheng 1134543212b3SYan, Zheng /* 1135543212b3SYan, Zheng * update dentry lease without having parent inode locked 1136543212b3SYan, Zheng */ 1137543212b3SYan, Zheng static void update_dentry_lease_careful(struct dentry *dentry, 1138543212b3SYan, Zheng struct ceph_mds_reply_lease *lease, 1139543212b3SYan, Zheng struct ceph_mds_session *session, 1140543212b3SYan, Zheng unsigned long from_time, 1141543212b3SYan, Zheng char *dname, u32 dname_len, 1142543212b3SYan, Zheng struct ceph_vino *pdvino, 1143543212b3SYan, Zheng struct ceph_vino *ptvino) 1144543212b3SYan, Zheng 1145543212b3SYan, Zheng { 1146543212b3SYan, Zheng struct inode *dir; 1147543212b3SYan, Zheng struct ceph_mds_session *old_lease_session = NULL; 1148543212b3SYan, Zheng 1149543212b3SYan, Zheng spin_lock(&dentry->d_lock); 1150543212b3SYan, Zheng /* make sure dentry's name matches target */ 1151543212b3SYan, Zheng if (dentry->d_name.len != dname_len || 1152543212b3SYan, Zheng memcmp(dentry->d_name.name, dname, dname_len)) 1153543212b3SYan, Zheng goto out_unlock; 1154543212b3SYan, Zheng 1155543212b3SYan, Zheng dir = d_inode(dentry->d_parent); 1156543212b3SYan, Zheng /* make sure parent matches dvino */ 1157543212b3SYan, Zheng if (!ceph_ino_compare(dir, pdvino)) 1158543212b3SYan, Zheng goto out_unlock; 1159543212b3SYan, Zheng 1160543212b3SYan, Zheng /* make sure dentry's inode matches target. NULL ptvino means that 1161543212b3SYan, Zheng * we expect a negative dentry */ 1162543212b3SYan, Zheng if (ptvino) { 1163543212b3SYan, Zheng if (d_really_is_negative(dentry)) 1164543212b3SYan, Zheng goto out_unlock; 1165543212b3SYan, Zheng if (!ceph_ino_compare(d_inode(dentry), ptvino)) 1166543212b3SYan, Zheng goto out_unlock; 1167543212b3SYan, Zheng } else { 1168543212b3SYan, Zheng if (d_really_is_positive(dentry)) 1169543212b3SYan, Zheng goto out_unlock; 1170543212b3SYan, Zheng } 1171543212b3SYan, Zheng 1172543212b3SYan, Zheng __update_dentry_lease(dir, dentry, lease, session, 1173543212b3SYan, Zheng from_time, &old_lease_session); 1174355da1ebSSage Weil out_unlock: 1175355da1ebSSage Weil spin_unlock(&dentry->d_lock); 1176481f001fSYan, Zheng if (old_lease_session) 1177481f001fSYan, Zheng ceph_put_mds_session(old_lease_session); 1178355da1ebSSage Weil } 1179355da1ebSSage Weil 1180355da1ebSSage Weil /* 11811cd3935bSSage Weil * splice a dentry to an inode. 11821cd3935bSSage Weil * caller must hold directory i_mutex for this to be safe. 11831cd3935bSSage Weil */ 11842bf996acSYan, Zheng static int splice_dentry(struct dentry **pdn, struct inode *in) 11851cd3935bSSage Weil { 11862bf996acSYan, Zheng struct dentry *dn = *pdn; 11871cd3935bSSage Weil struct dentry *realdn; 11881cd3935bSSage Weil 11892b0143b5SDavid Howells BUG_ON(d_inode(dn)); 11901cd3935bSSage Weil 11915495c2d0SYan, Zheng if (S_ISDIR(in->i_mode)) { 11925495c2d0SYan, Zheng /* If inode is directory, d_splice_alias() below will remove 11935495c2d0SYan, Zheng * 'realdn' from its origin parent. We need to ensure that 11945495c2d0SYan, Zheng * origin parent's readdir cache will not reference 'realdn' 11955495c2d0SYan, Zheng */ 11965495c2d0SYan, Zheng realdn = d_find_any_alias(in); 11975495c2d0SYan, Zheng if (realdn) { 11985495c2d0SYan, Zheng struct ceph_dentry_info *di = ceph_dentry(realdn); 11995495c2d0SYan, Zheng spin_lock(&realdn->d_lock); 12005495c2d0SYan, Zheng 12015495c2d0SYan, Zheng realdn->d_op->d_prune(realdn); 12025495c2d0SYan, Zheng 12035495c2d0SYan, Zheng di->time = jiffies; 12045495c2d0SYan, Zheng di->lease_shared_gen = 0; 12055495c2d0SYan, Zheng di->offset = 0; 12065495c2d0SYan, Zheng 12075495c2d0SYan, Zheng spin_unlock(&realdn->d_lock); 12085495c2d0SYan, Zheng dput(realdn); 12095495c2d0SYan, Zheng } 12105495c2d0SYan, Zheng } 12115495c2d0SYan, Zheng 12121cd3935bSSage Weil /* dn must be unhashed */ 12131cd3935bSSage Weil if (!d_unhashed(dn)) 12141cd3935bSSage Weil d_drop(dn); 121541d28bcaSAl Viro realdn = d_splice_alias(in, dn); 12161cd3935bSSage Weil if (IS_ERR(realdn)) { 1217d69ed05aSSage Weil pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", 1218d69ed05aSSage Weil PTR_ERR(realdn), dn, in, ceph_vinop(in)); 12192bf996acSYan, Zheng return PTR_ERR(realdn); 12202bf996acSYan, Zheng } 12212bf996acSYan, Zheng 12222bf996acSYan, Zheng if (realdn) { 12231cd3935bSSage Weil dout("dn %p (%d) spliced with %p (%d) " 12241cd3935bSSage Weil "inode %p ino %llx.%llx\n", 122584d08fa8SAl Viro dn, d_count(dn), 122684d08fa8SAl Viro realdn, d_count(realdn), 12272b0143b5SDavid Howells d_inode(realdn), ceph_vinop(d_inode(realdn))); 12281cd3935bSSage Weil dput(dn); 12292bf996acSYan, Zheng *pdn = realdn; 12301cd3935bSSage Weil } else { 12311cd3935bSSage Weil BUG_ON(!ceph_dentry(dn)); 12321cd3935bSSage Weil dout("dn %p attached to %p ino %llx.%llx\n", 12332b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn))); 12341cd3935bSSage Weil } 12352bf996acSYan, Zheng return 0; 12361cd3935bSSage Weil } 12371cd3935bSSage Weil 12381cd3935bSSage Weil /* 1239355da1ebSSage Weil * Incorporate results into the local cache. This is either just 1240355da1ebSSage Weil * one inode, or a directory, dentry, and possibly linked-to inode (e.g., 1241355da1ebSSage Weil * after a lookup). 1242355da1ebSSage Weil * 1243355da1ebSSage Weil * A reply may contain 1244355da1ebSSage Weil * a directory inode along with a dentry. 1245355da1ebSSage Weil * and/or a target inode 1246355da1ebSSage Weil * 1247355da1ebSSage Weil * Called with snap_rwsem (read). 1248355da1ebSSage Weil */ 1249f5a03b08SJeff Layton int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req) 1250355da1ebSSage Weil { 1251f5a03b08SJeff Layton struct ceph_mds_session *session = req->r_session; 1252355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1253355da1ebSSage Weil struct inode *in = NULL; 1254f5d55f03SJeff Layton struct ceph_vino tvino, dvino; 12553d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(sb); 1256355da1ebSSage Weil int err = 0; 1257355da1ebSSage Weil 1258355da1ebSSage Weil dout("fill_trace %p is_dentry %d is_target %d\n", req, 1259355da1ebSSage Weil rinfo->head->is_dentry, rinfo->head->is_target); 1260355da1ebSSage Weil 1261355da1ebSSage Weil if (!rinfo->head->is_target && !rinfo->head->is_dentry) { 1262355da1ebSSage Weil dout("fill_trace reply is empty!\n"); 12633dd69aabSJeff Layton if (rinfo->head->result == 0 && req->r_parent) 1264167c9e35SSage Weil ceph_invalidate_dir_request(req); 1265355da1ebSSage Weil return 0; 1266355da1ebSSage Weil } 1267355da1ebSSage Weil 1268355da1ebSSage Weil if (rinfo->head->is_dentry) { 12693dd69aabSJeff Layton struct inode *dir = req->r_parent; 12705b1daecdSSage Weil 12716c5e50faSSage Weil if (dir) { 1272966c7160SJeff Layton err = ceph_fill_inode(dir, NULL, &rinfo->diri, 1273966c7160SJeff Layton rinfo->dirfrag, session, -1, 12745b1daecdSSage Weil &req->r_caps_reservation); 12755b1daecdSSage Weil if (err < 0) 127619913b4eSYan, Zheng goto done; 12776c5e50faSSage Weil } else { 12786c5e50faSSage Weil WARN_ON_ONCE(1); 12796c5e50faSSage Weil } 128019913b4eSYan, Zheng 128174c9e6bfSYan, Zheng if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME && 128274c9e6bfSYan, Zheng test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 128374c9e6bfSYan, Zheng !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { 128419913b4eSYan, Zheng struct qstr dname; 128519913b4eSYan, Zheng struct dentry *dn, *parent; 128619913b4eSYan, Zheng 128719913b4eSYan, Zheng BUG_ON(!rinfo->head->is_target); 128819913b4eSYan, Zheng BUG_ON(req->r_dentry); 128919913b4eSYan, Zheng 129019913b4eSYan, Zheng parent = d_find_any_alias(dir); 129119913b4eSYan, Zheng BUG_ON(!parent); 129219913b4eSYan, Zheng 129319913b4eSYan, Zheng dname.name = rinfo->dname; 129419913b4eSYan, Zheng dname.len = rinfo->dname_len; 12958387ff25SLinus Torvalds dname.hash = full_name_hash(parent, dname.name, dname.len); 1296f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1297f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 129819913b4eSYan, Zheng retry_lookup: 129919913b4eSYan, Zheng dn = d_lookup(parent, &dname); 130019913b4eSYan, Zheng dout("d_lookup on parent=%p name=%.*s got %p\n", 130119913b4eSYan, Zheng parent, dname.len, dname.name, dn); 130219913b4eSYan, Zheng 130319913b4eSYan, Zheng if (!dn) { 130419913b4eSYan, Zheng dn = d_alloc(parent, &dname); 130519913b4eSYan, Zheng dout("d_alloc %p '%.*s' = %p\n", parent, 130619913b4eSYan, Zheng dname.len, dname.name, dn); 1307d37b1d99SMarkus Elfring if (!dn) { 130819913b4eSYan, Zheng dput(parent); 130919913b4eSYan, Zheng err = -ENOMEM; 131019913b4eSYan, Zheng goto done; 131119913b4eSYan, Zheng } 1312ad5cb123SAl Viro err = 0; 13132b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 1314f5d55f03SJeff Layton (ceph_ino(d_inode(dn)) != tvino.ino || 1315f5d55f03SJeff Layton ceph_snap(d_inode(dn)) != tvino.snap)) { 131619913b4eSYan, Zheng dout(" dn %p points to wrong inode %p\n", 13172b0143b5SDavid Howells dn, d_inode(dn)); 1318933ad2c9SYan, Zheng ceph_dir_clear_ordered(dir); 131919913b4eSYan, Zheng d_delete(dn); 132019913b4eSYan, Zheng dput(dn); 132119913b4eSYan, Zheng goto retry_lookup; 132219913b4eSYan, Zheng } 132319913b4eSYan, Zheng 132419913b4eSYan, Zheng req->r_dentry = dn; 132519913b4eSYan, Zheng dput(parent); 132619913b4eSYan, Zheng } 13275b1daecdSSage Weil } 13285b1daecdSSage Weil 132986b58d13SYan, Zheng if (rinfo->head->is_target) { 1330bca9fc14SJeff Layton /* Should be filled in by handle_reply */ 1331bca9fc14SJeff Layton BUG_ON(!req->r_target_inode); 133286b58d13SYan, Zheng 1333bca9fc14SJeff Layton in = req->r_target_inode; 1334966c7160SJeff Layton err = ceph_fill_inode(in, req->r_locked_page, &rinfo->targeti, 1335966c7160SJeff Layton NULL, session, 1336bc2de10dSJeff Layton (!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && 13373bb48b41SJeff Layton !test_bit(CEPH_MDS_R_ASYNC, &req->r_req_flags) && 1338bc2de10dSJeff Layton rinfo->head->result == 0) ? req->r_fmode : -1, 133986b58d13SYan, Zheng &req->r_caps_reservation); 134086b58d13SYan, Zheng if (err < 0) { 1341966c7160SJeff Layton pr_err("ceph_fill_inode badness %p %llx.%llx\n", 134286b58d13SYan, Zheng in, ceph_vinop(in)); 1343bca9fc14SJeff Layton req->r_target_inode = NULL; 1344893e456bSJeff Layton if (in->i_state & I_NEW) 1345893e456bSJeff Layton discard_new_inode(in); 134668cbb805SJeff Layton else 134768cbb805SJeff Layton iput(in); 134886b58d13SYan, Zheng goto done; 134986b58d13SYan, Zheng } 1350893e456bSJeff Layton if (in->i_state & I_NEW) 1351893e456bSJeff Layton unlock_new_inode(in); 135286b58d13SYan, Zheng } 135386b58d13SYan, Zheng 13549358c6d4SSage Weil /* 13559358c6d4SSage Weil * ignore null lease/binding on snapdir ENOENT, or else we 13569358c6d4SSage Weil * will have trouble splicing in the virtual snapdir later 13579358c6d4SSage Weil */ 13583dd69aabSJeff Layton if (rinfo->head->is_dentry && 1359bc2de10dSJeff Layton !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && 13603dd69aabSJeff Layton test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 13619358c6d4SSage Weil (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, 13623d14c5d2SYehuda Sadeh fsc->mount_options->snapdir_name, 13639358c6d4SSage Weil req->r_dentry->d_name.len))) { 1364355da1ebSSage Weil /* 1365355da1ebSSage Weil * lookup link rename : null -> possibly existing inode 1366355da1ebSSage Weil * mknod symlink mkdir : null -> new inode 1367355da1ebSSage Weil * unlink : linked -> null 1368355da1ebSSage Weil */ 13693dd69aabSJeff Layton struct inode *dir = req->r_parent; 1370355da1ebSSage Weil struct dentry *dn = req->r_dentry; 1371355da1ebSSage Weil bool have_dir_cap, have_lease; 1372355da1ebSSage Weil 1373355da1ebSSage Weil BUG_ON(!dn); 1374355da1ebSSage Weil BUG_ON(!dir); 13752b0143b5SDavid Howells BUG_ON(d_inode(dn->d_parent) != dir); 1376f5d55f03SJeff Layton 1377f5d55f03SJeff Layton dvino.ino = le64_to_cpu(rinfo->diri.in->ino); 1378f5d55f03SJeff Layton dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); 1379f5d55f03SJeff Layton 1380f5d55f03SJeff Layton BUG_ON(ceph_ino(dir) != dvino.ino); 1381f5d55f03SJeff Layton BUG_ON(ceph_snap(dir) != dvino.snap); 1382355da1ebSSage Weil 1383355da1ebSSage Weil /* do we have a lease on the whole dir? */ 1384355da1ebSSage Weil have_dir_cap = 1385355da1ebSSage Weil (le32_to_cpu(rinfo->diri.in->cap.caps) & 1386355da1ebSSage Weil CEPH_CAP_FILE_SHARED); 1387355da1ebSSage Weil 1388355da1ebSSage Weil /* do we have a dn lease? */ 1389355da1ebSSage Weil have_lease = have_dir_cap || 13902f90b852SSage Weil le32_to_cpu(rinfo->dlease->duration_ms); 1391355da1ebSSage Weil if (!have_lease) 1392355da1ebSSage Weil dout("fill_trace no dentry lease or dir cap\n"); 1393355da1ebSSage Weil 1394355da1ebSSage Weil /* rename? */ 1395355da1ebSSage Weil if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { 13960a8a70f9SYan, Zheng struct inode *olddir = req->r_old_dentry_dir; 13970a8a70f9SYan, Zheng BUG_ON(!olddir); 13980a8a70f9SYan, Zheng 1399a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1400355da1ebSSage Weil req->r_old_dentry, 1401a455589fSAl Viro req->r_old_dentry, 1402a455589fSAl Viro dn, dn); 1403355da1ebSSage Weil dout("fill_trace doing d_move %p -> %p\n", 1404355da1ebSSage Weil req->r_old_dentry, dn); 1405c10f5e12SSage Weil 1406fdd4e158SYan, Zheng /* d_move screws up sibling dentries' offsets */ 1407fdd4e158SYan, Zheng ceph_dir_clear_ordered(dir); 1408fdd4e158SYan, Zheng ceph_dir_clear_ordered(olddir); 1409fdd4e158SYan, Zheng 1410355da1ebSSage Weil d_move(req->r_old_dentry, dn); 1411a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1412355da1ebSSage Weil req->r_old_dentry, 1413a455589fSAl Viro req->r_old_dentry, 1414a455589fSAl Viro dn, dn); 141581a6cf2dSSage Weil 1416c4a29f26SSage Weil /* ensure target dentry is invalidated, despite 1417c4a29f26SSage Weil rehashing bug in vfs_rename_dir */ 141881a6cf2dSSage Weil ceph_invalidate_dentry_lease(dn); 141981a6cf2dSSage Weil 142009adc80cSSage Weil dout("dn %p gets new offset %lld\n", req->r_old_dentry, 14211cd3935bSSage Weil ceph_dentry(req->r_old_dentry)->offset); 142281a6cf2dSSage Weil 14232bf996acSYan, Zheng /* swap r_dentry and r_old_dentry in case that 14242bf996acSYan, Zheng * splice_dentry() gets called later. This is safe 14252bf996acSYan, Zheng * because no other place will use them */ 14262bf996acSYan, Zheng req->r_dentry = req->r_old_dentry; 14272bf996acSYan, Zheng req->r_old_dentry = dn; 14282bf996acSYan, Zheng dn = req->r_dentry; 1429355da1ebSSage Weil } 1430355da1ebSSage Weil 1431355da1ebSSage Weil /* null dentry? */ 1432355da1ebSSage Weil if (!rinfo->head->is_target) { 1433355da1ebSSage Weil dout("fill_trace null dentry\n"); 14342b0143b5SDavid Howells if (d_really_is_positive(dn)) { 1435355da1ebSSage Weil dout("d_delete %p\n", dn); 14365495c2d0SYan, Zheng ceph_dir_clear_ordered(dir); 1437355da1ebSSage Weil d_delete(dn); 143880d025ffSJeff Layton } else if (have_lease) { 143980d025ffSJeff Layton if (d_unhashed(dn)) 1440f8b31710SAl Viro d_add(dn, NULL); 1441543212b3SYan, Zheng update_dentry_lease(dir, dn, 1442543212b3SYan, Zheng rinfo->dlease, session, 1443543212b3SYan, Zheng req->r_request_started); 1444355da1ebSSage Weil } 1445355da1ebSSage Weil goto done; 1446355da1ebSSage Weil } 1447355da1ebSSage Weil 1448355da1ebSSage Weil /* attach proper inode */ 14492b0143b5SDavid Howells if (d_really_is_negative(dn)) { 145070db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 145186b58d13SYan, Zheng ihold(in); 14522bf996acSYan, Zheng err = splice_dentry(&req->r_dentry, in); 14532bf996acSYan, Zheng if (err < 0) 1454355da1ebSSage Weil goto done; 14552bf996acSYan, Zheng dn = req->r_dentry; /* may have spliced */ 14562b0143b5SDavid Howells } else if (d_really_is_positive(dn) && d_inode(dn) != in) { 1457355da1ebSSage Weil dout(" %p links to %p %llx.%llx, not %llx.%llx\n", 14582b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn)), 145986b58d13SYan, Zheng ceph_vinop(in)); 1460200fd27cSYan, Zheng d_invalidate(dn); 1461355da1ebSSage Weil have_lease = false; 1462355da1ebSSage Weil } 1463355da1ebSSage Weil 1464f5d55f03SJeff Layton if (have_lease) { 1465543212b3SYan, Zheng update_dentry_lease(dir, dn, 1466543212b3SYan, Zheng rinfo->dlease, session, 1467543212b3SYan, Zheng req->r_request_started); 1468f5d55f03SJeff Layton } 1469355da1ebSSage Weil dout(" final dn %p\n", dn); 1470bc2de10dSJeff Layton } else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP || 1471bc2de10dSJeff Layton req->r_op == CEPH_MDS_OP_MKSNAP) && 14721f08529cSAl Viro test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 1473bc2de10dSJeff Layton !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { 14743dd69aabSJeff Layton struct inode *dir = req->r_parent; 1475355da1ebSSage Weil 1476355da1ebSSage Weil /* fill out a snapdir LOOKUPSNAP dentry */ 14770a8a70f9SYan, Zheng BUG_ON(!dir); 14780a8a70f9SYan, Zheng BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); 14792bf996acSYan, Zheng BUG_ON(!req->r_dentry); 14802bf996acSYan, Zheng dout(" linking snapped dir %p to dn %p\n", in, req->r_dentry); 148170db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 148286b58d13SYan, Zheng ihold(in); 14832bf996acSYan, Zheng err = splice_dentry(&req->r_dentry, in); 14842bf996acSYan, Zheng if (err < 0) 1485355da1ebSSage Weil goto done; 1486543212b3SYan, Zheng } else if (rinfo->head->is_dentry && req->r_dentry) { 1487543212b3SYan, Zheng /* parent inode is not locked, be carefull */ 1488cdde7c43SJeff Layton struct ceph_vino *ptvino = NULL; 1489cdde7c43SJeff Layton dvino.ino = le64_to_cpu(rinfo->diri.in->ino); 1490cdde7c43SJeff Layton dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); 1491cdde7c43SJeff Layton if (rinfo->head->is_target) { 1492cdde7c43SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1493cdde7c43SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 1494cdde7c43SJeff Layton ptvino = &tvino; 1495cdde7c43SJeff Layton } 1496543212b3SYan, Zheng update_dentry_lease_careful(req->r_dentry, rinfo->dlease, 1497543212b3SYan, Zheng session, req->r_request_started, 1498543212b3SYan, Zheng rinfo->dname, rinfo->dname_len, 1499543212b3SYan, Zheng &dvino, ptvino); 1500355da1ebSSage Weil } 1501355da1ebSSage Weil done: 1502355da1ebSSage Weil dout("fill_trace done err=%d\n", err); 1503355da1ebSSage Weil return err; 1504355da1ebSSage Weil } 1505355da1ebSSage Weil 1506355da1ebSSage Weil /* 1507355da1ebSSage Weil * Prepopulate our cache with readdir results, leases, etc. 1508355da1ebSSage Weil */ 150979f9f99aSSage Weil static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, 151079f9f99aSSage Weil struct ceph_mds_session *session) 151179f9f99aSSage Weil { 151279f9f99aSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 151379f9f99aSSage Weil int i, err = 0; 151479f9f99aSSage Weil 151579f9f99aSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 15162a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 151779f9f99aSSage Weil struct ceph_vino vino; 151879f9f99aSSage Weil struct inode *in; 151979f9f99aSSage Weil int rc; 152079f9f99aSSage Weil 15212a5beea3SYan, Zheng vino.ino = le64_to_cpu(rde->inode.in->ino); 15222a5beea3SYan, Zheng vino.snap = le64_to_cpu(rde->inode.in->snapid); 152379f9f99aSSage Weil 152479f9f99aSSage Weil in = ceph_get_inode(req->r_dentry->d_sb, vino); 152579f9f99aSSage Weil if (IS_ERR(in)) { 152679f9f99aSSage Weil err = PTR_ERR(in); 152779f9f99aSSage Weil dout("new_inode badness got %d\n", err); 152879f9f99aSSage Weil continue; 152979f9f99aSSage Weil } 1530966c7160SJeff Layton rc = ceph_fill_inode(in, NULL, &rde->inode, NULL, session, 153157c21994SJeff Layton -1, &req->r_caps_reservation); 153279f9f99aSSage Weil if (rc < 0) { 1533966c7160SJeff Layton pr_err("ceph_fill_inode badness on %p got %d\n", 1534966c7160SJeff Layton in, rc); 153579f9f99aSSage Weil err = rc; 1536893e456bSJeff Layton if (in->i_state & I_NEW) { 1537893e456bSJeff Layton ihold(in); 1538893e456bSJeff Layton discard_new_inode(in); 153979f9f99aSSage Weil } 1540893e456bSJeff Layton } else if (in->i_state & I_NEW) { 1541893e456bSJeff Layton unlock_new_inode(in); 1542893e456bSJeff Layton } 1543893e456bSJeff Layton 15443e1d0452SYan, Zheng /* avoid calling iput_final() in mds dispatch threads */ 15453e1d0452SYan, Zheng ceph_async_iput(in); 154679f9f99aSSage Weil } 154779f9f99aSSage Weil 154879f9f99aSSage Weil return err; 154979f9f99aSSage Weil } 155079f9f99aSSage Weil 1551fdd4e158SYan, Zheng void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) 1552fdd4e158SYan, Zheng { 1553fdd4e158SYan, Zheng if (ctl->page) { 1554fdd4e158SYan, Zheng kunmap(ctl->page); 155509cbfeafSKirill A. Shutemov put_page(ctl->page); 1556fdd4e158SYan, Zheng ctl->page = NULL; 1557fdd4e158SYan, Zheng } 1558fdd4e158SYan, Zheng } 1559fdd4e158SYan, Zheng 1560fdd4e158SYan, Zheng static int fill_readdir_cache(struct inode *dir, struct dentry *dn, 1561fdd4e158SYan, Zheng struct ceph_readdir_cache_control *ctl, 1562fdd4e158SYan, Zheng struct ceph_mds_request *req) 1563fdd4e158SYan, Zheng { 1564fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(dir); 156509cbfeafSKirill A. Shutemov unsigned nsize = PAGE_SIZE / sizeof(struct dentry*); 1566fdd4e158SYan, Zheng unsigned idx = ctl->index % nsize; 1567fdd4e158SYan, Zheng pgoff_t pgoff = ctl->index / nsize; 1568fdd4e158SYan, Zheng 1569fdd4e158SYan, Zheng if (!ctl->page || pgoff != page_index(ctl->page)) { 1570fdd4e158SYan, Zheng ceph_readdir_cache_release(ctl); 1571af5e5eb5SYan, Zheng if (idx == 0) 1572fdd4e158SYan, Zheng ctl->page = grab_cache_page(&dir->i_data, pgoff); 1573af5e5eb5SYan, Zheng else 1574af5e5eb5SYan, Zheng ctl->page = find_lock_page(&dir->i_data, pgoff); 1575fdd4e158SYan, Zheng if (!ctl->page) { 1576fdd4e158SYan, Zheng ctl->index = -1; 1577af5e5eb5SYan, Zheng return idx == 0 ? -ENOMEM : 0; 1578fdd4e158SYan, Zheng } 1579fdd4e158SYan, Zheng /* reading/filling the cache are serialized by 1580fdd4e158SYan, Zheng * i_mutex, no need to use page lock */ 1581fdd4e158SYan, Zheng unlock_page(ctl->page); 1582fdd4e158SYan, Zheng ctl->dentries = kmap(ctl->page); 1583af5e5eb5SYan, Zheng if (idx == 0) 158409cbfeafSKirill A. Shutemov memset(ctl->dentries, 0, PAGE_SIZE); 1585fdd4e158SYan, Zheng } 1586fdd4e158SYan, Zheng 1587fdd4e158SYan, Zheng if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && 1588fdd4e158SYan, Zheng req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { 1589fdd4e158SYan, Zheng dout("readdir cache dn %p idx %d\n", dn, ctl->index); 1590fdd4e158SYan, Zheng ctl->dentries[idx] = dn; 1591fdd4e158SYan, Zheng ctl->index++; 1592fdd4e158SYan, Zheng } else { 1593fdd4e158SYan, Zheng dout("disable readdir cache\n"); 1594fdd4e158SYan, Zheng ctl->index = -1; 1595fdd4e158SYan, Zheng } 1596fdd4e158SYan, Zheng return 0; 1597fdd4e158SYan, Zheng } 1598fdd4e158SYan, Zheng 1599355da1ebSSage Weil int ceph_readdir_prepopulate(struct ceph_mds_request *req, 1600355da1ebSSage Weil struct ceph_mds_session *session) 1601355da1ebSSage Weil { 1602355da1ebSSage Weil struct dentry *parent = req->r_dentry; 1603f3c4ebe6SYan, Zheng struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); 1604355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1605355da1ebSSage Weil struct qstr dname; 1606355da1ebSSage Weil struct dentry *dn; 1607355da1ebSSage Weil struct inode *in; 1608315f2408SYan, Zheng int err = 0, skipped = 0, ret, i; 16090f51a983SJeff Layton u32 frag = le32_to_cpu(req->r_args.readdir.frag); 1610f3c4ebe6SYan, Zheng u32 last_hash = 0; 1611f3c4ebe6SYan, Zheng u32 fpos_offset; 1612fdd4e158SYan, Zheng struct ceph_readdir_cache_control cache_ctl = {}; 1613fdd4e158SYan, Zheng 1614bc2de10dSJeff Layton if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) 1615fdd4e158SYan, Zheng return readdir_prepopulate_inodes_only(req, session); 161681c6aea5SYan, Zheng 161779162547SYan, Zheng if (rinfo->hash_order) { 161879162547SYan, Zheng if (req->r_path2) { 1619f3c4ebe6SYan, Zheng last_hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 162079162547SYan, Zheng req->r_path2, 162179162547SYan, Zheng strlen(req->r_path2)); 1622f3c4ebe6SYan, Zheng last_hash = ceph_frag_value(last_hash); 162379162547SYan, Zheng } else if (rinfo->offset_hash) { 162479162547SYan, Zheng /* mds understands offset_hash */ 162579162547SYan, Zheng WARN_ON_ONCE(req->r_readdir_offset != 2); 16260f51a983SJeff Layton last_hash = le32_to_cpu(req->r_args.readdir.offset_hash); 162779162547SYan, Zheng } 1628f3c4ebe6SYan, Zheng } 1629f3c4ebe6SYan, Zheng 163081c6aea5SYan, Zheng if (rinfo->dir_dir && 163181c6aea5SYan, Zheng le32_to_cpu(rinfo->dir_dir->frag) != frag) { 163281c6aea5SYan, Zheng dout("readdir_prepopulate got new frag %x -> %x\n", 163381c6aea5SYan, Zheng frag, le32_to_cpu(rinfo->dir_dir->frag)); 163481c6aea5SYan, Zheng frag = le32_to_cpu(rinfo->dir_dir->frag); 1635f3c4ebe6SYan, Zheng if (!rinfo->hash_order) 1636fdd4e158SYan, Zheng req->r_readdir_offset = 2; 163781c6aea5SYan, Zheng } 1638355da1ebSSage Weil 1639355da1ebSSage Weil if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { 1640355da1ebSSage Weil dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", 1641355da1ebSSage Weil rinfo->dir_nr, parent); 1642355da1ebSSage Weil } else { 1643355da1ebSSage Weil dout("readdir_prepopulate %d items under dn %p\n", 1644355da1ebSSage Weil rinfo->dir_nr, parent); 1645355da1ebSSage Weil if (rinfo->dir_dir) 16462b0143b5SDavid Howells ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); 1647355da1ebSSage Weil 16488d45b911SYan, Zheng if (ceph_frag_is_leftmost(frag) && 16498d45b911SYan, Zheng req->r_readdir_offset == 2 && 165079162547SYan, Zheng !(rinfo->hash_order && last_hash)) { 16518d45b911SYan, Zheng /* note dir version at start of readdir so we can 16528d45b911SYan, Zheng * tell if any dentries get dropped */ 16538d45b911SYan, Zheng req->r_dir_release_cnt = 16548d45b911SYan, Zheng atomic64_read(&ci->i_release_count); 16558d45b911SYan, Zheng req->r_dir_ordered_cnt = 16568d45b911SYan, Zheng atomic64_read(&ci->i_ordered_count); 1657fdd4e158SYan, Zheng req->r_readdir_cache_idx = 0; 1658fdd4e158SYan, Zheng } 16598d45b911SYan, Zheng } 1660fdd4e158SYan, Zheng 1661fdd4e158SYan, Zheng cache_ctl.index = req->r_readdir_cache_idx; 1662f3c4ebe6SYan, Zheng fpos_offset = req->r_readdir_offset; 1663fdd4e158SYan, Zheng 166486b58d13SYan, Zheng /* FIXME: release caps/leases if error occurs */ 1665355da1ebSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 16662a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 1667543212b3SYan, Zheng struct ceph_vino tvino; 1668355da1ebSSage Weil 16692a5beea3SYan, Zheng dname.name = rde->name; 16702a5beea3SYan, Zheng dname.len = rde->name_len; 16718387ff25SLinus Torvalds dname.hash = full_name_hash(parent, dname.name, dname.len); 1672355da1ebSSage Weil 1673f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rde->inode.in->ino); 1674f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rde->inode.in->snapid); 1675355da1ebSSage Weil 1676f3c4ebe6SYan, Zheng if (rinfo->hash_order) { 1677f3c4ebe6SYan, Zheng u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 1678f3c4ebe6SYan, Zheng rde->name, rde->name_len); 1679f3c4ebe6SYan, Zheng hash = ceph_frag_value(hash); 1680f3c4ebe6SYan, Zheng if (hash != last_hash) 1681f3c4ebe6SYan, Zheng fpos_offset = 2; 1682f3c4ebe6SYan, Zheng last_hash = hash; 1683f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(hash, fpos_offset++, true); 1684f3c4ebe6SYan, Zheng } else { 1685f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(frag, fpos_offset++, false); 1686f3c4ebe6SYan, Zheng } 1687355da1ebSSage Weil 1688355da1ebSSage Weil retry_lookup: 1689355da1ebSSage Weil dn = d_lookup(parent, &dname); 1690355da1ebSSage Weil dout("d_lookup on parent=%p name=%.*s got %p\n", 1691355da1ebSSage Weil parent, dname.len, dname.name, dn); 1692355da1ebSSage Weil 1693355da1ebSSage Weil if (!dn) { 1694355da1ebSSage Weil dn = d_alloc(parent, &dname); 1695355da1ebSSage Weil dout("d_alloc %p '%.*s' = %p\n", parent, 1696355da1ebSSage Weil dname.len, dname.name, dn); 1697d37b1d99SMarkus Elfring if (!dn) { 1698355da1ebSSage Weil dout("d_alloc badness\n"); 1699355da1ebSSage Weil err = -ENOMEM; 1700355da1ebSSage Weil goto out; 1701355da1ebSSage Weil } 17022b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 1703f5d55f03SJeff Layton (ceph_ino(d_inode(dn)) != tvino.ino || 1704f5d55f03SJeff Layton ceph_snap(d_inode(dn)) != tvino.snap)) { 17055495c2d0SYan, Zheng struct ceph_dentry_info *di = ceph_dentry(dn); 1706355da1ebSSage Weil dout(" dn %p points to wrong inode %p\n", 17072b0143b5SDavid Howells dn, d_inode(dn)); 17085495c2d0SYan, Zheng 17095495c2d0SYan, Zheng spin_lock(&dn->d_lock); 17105495c2d0SYan, Zheng if (di->offset > 0 && 17115495c2d0SYan, Zheng di->lease_shared_gen == 17125495c2d0SYan, Zheng atomic_read(&ci->i_shared_gen)) { 1713933ad2c9SYan, Zheng __ceph_dir_clear_ordered(ci); 17145495c2d0SYan, Zheng di->offset = 0; 17155495c2d0SYan, Zheng } 17165495c2d0SYan, Zheng spin_unlock(&dn->d_lock); 17175495c2d0SYan, Zheng 1718355da1ebSSage Weil d_delete(dn); 1719355da1ebSSage Weil dput(dn); 1720355da1ebSSage Weil goto retry_lookup; 1721355da1ebSSage Weil } 1722355da1ebSSage Weil 1723355da1ebSSage Weil /* inode */ 17242b0143b5SDavid Howells if (d_really_is_positive(dn)) { 17252b0143b5SDavid Howells in = d_inode(dn); 1726355da1ebSSage Weil } else { 1727f5d55f03SJeff Layton in = ceph_get_inode(parent->d_sb, tvino); 1728ac1f12efSDan Carpenter if (IS_ERR(in)) { 1729355da1ebSSage Weil dout("new_inode badness\n"); 17302744c171SAl Viro d_drop(dn); 1731355da1ebSSage Weil dput(dn); 1732ac1f12efSDan Carpenter err = PTR_ERR(in); 1733355da1ebSSage Weil goto out; 1734355da1ebSSage Weil } 1735355da1ebSSage Weil } 1736355da1ebSSage Weil 1737966c7160SJeff Layton ret = ceph_fill_inode(in, NULL, &rde->inode, NULL, session, 173857c21994SJeff Layton -1, &req->r_caps_reservation); 1739fdd4e158SYan, Zheng if (ret < 0) { 1740966c7160SJeff Layton pr_err("ceph_fill_inode badness on %p\n", in); 17413e1d0452SYan, Zheng if (d_really_is_negative(dn)) { 17423e1d0452SYan, Zheng /* avoid calling iput_final() in mds 17433e1d0452SYan, Zheng * dispatch threads */ 1744893e456bSJeff Layton if (in->i_state & I_NEW) { 1745893e456bSJeff Layton ihold(in); 1746893e456bSJeff Layton discard_new_inode(in); 1747893e456bSJeff Layton } 17483e1d0452SYan, Zheng ceph_async_iput(in); 17493e1d0452SYan, Zheng } 175086b58d13SYan, Zheng d_drop(dn); 1751fdd4e158SYan, Zheng err = ret; 1752d69ed05aSSage Weil goto next_item; 1753355da1ebSSage Weil } 1754893e456bSJeff Layton if (in->i_state & I_NEW) 1755893e456bSJeff Layton unlock_new_inode(in); 175686b58d13SYan, Zheng 17572b0143b5SDavid Howells if (d_really_is_negative(dn)) { 1758315f2408SYan, Zheng if (ceph_security_xattr_deadlock(in)) { 1759315f2408SYan, Zheng dout(" skip splicing dn %p to inode %p" 1760315f2408SYan, Zheng " (security xattr deadlock)\n", dn, in); 17613e1d0452SYan, Zheng ceph_async_iput(in); 1762315f2408SYan, Zheng skipped++; 1763315f2408SYan, Zheng goto next_item; 1764315f2408SYan, Zheng } 1765315f2408SYan, Zheng 17662bf996acSYan, Zheng err = splice_dentry(&dn, in); 17672bf996acSYan, Zheng if (err < 0) 176886b58d13SYan, Zheng goto next_item; 176986b58d13SYan, Zheng } 177086b58d13SYan, Zheng 1771f3c4ebe6SYan, Zheng ceph_dentry(dn)->offset = rde->offset; 177286b58d13SYan, Zheng 1773543212b3SYan, Zheng update_dentry_lease(d_inode(parent), dn, 1774543212b3SYan, Zheng rde->lease, req->r_session, 1775543212b3SYan, Zheng req->r_request_started); 1776fdd4e158SYan, Zheng 1777315f2408SYan, Zheng if (err == 0 && skipped == 0 && cache_ctl.index >= 0) { 1778fdd4e158SYan, Zheng ret = fill_readdir_cache(d_inode(parent), dn, 1779fdd4e158SYan, Zheng &cache_ctl, req); 1780fdd4e158SYan, Zheng if (ret < 0) 1781fdd4e158SYan, Zheng err = ret; 1782fdd4e158SYan, Zheng } 1783d69ed05aSSage Weil next_item: 1784355da1ebSSage Weil dput(dn); 1785355da1ebSSage Weil } 1786355da1ebSSage Weil out: 1787315f2408SYan, Zheng if (err == 0 && skipped == 0) { 1788bc2de10dSJeff Layton set_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags); 1789fdd4e158SYan, Zheng req->r_readdir_cache_idx = cache_ctl.index; 1790fdd4e158SYan, Zheng } 1791fdd4e158SYan, Zheng ceph_readdir_cache_release(&cache_ctl); 1792355da1ebSSage Weil dout("readdir_prepopulate done\n"); 1793355da1ebSSage Weil return err; 1794355da1ebSSage Weil } 1795355da1ebSSage Weil 1796efb0ca76SYan, Zheng bool ceph_inode_set_size(struct inode *inode, loff_t size) 1797355da1ebSSage Weil { 1798355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1799efb0ca76SYan, Zheng bool ret; 1800355da1ebSSage Weil 1801be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1802355da1ebSSage Weil dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); 180399c88e69SYan, Zheng i_size_write(inode, size); 1804224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 1805355da1ebSSage Weil 1806efb0ca76SYan, Zheng ret = __ceph_should_report_size(ci); 1807355da1ebSSage Weil 1808be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1809355da1ebSSage Weil return ret; 1810355da1ebSSage Weil } 1811355da1ebSSage Weil 1812355da1ebSSage Weil /* 18133e1d0452SYan, Zheng * Put reference to inode, but avoid calling iput_final() in current thread. 18143e1d0452SYan, Zheng * iput_final() may wait for reahahead pages. The wait can cause deadlock in 18153e1d0452SYan, Zheng * some contexts. 18163e1d0452SYan, Zheng */ 18173e1d0452SYan, Zheng void ceph_async_iput(struct inode *inode) 18183e1d0452SYan, Zheng { 18193e1d0452SYan, Zheng if (!inode) 18203e1d0452SYan, Zheng return; 18213e1d0452SYan, Zheng for (;;) { 18223e1d0452SYan, Zheng if (atomic_add_unless(&inode->i_count, -1, 1)) 18233e1d0452SYan, Zheng break; 18243e1d0452SYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 18253e1d0452SYan, Zheng &ceph_inode(inode)->i_work)) 18263e1d0452SYan, Zheng break; 18273e1d0452SYan, Zheng /* queue work failed, i_count must be at least 2 */ 18283e1d0452SYan, Zheng } 18293e1d0452SYan, Zheng } 18303e1d0452SYan, Zheng 183164f28c62SJeff Layton void ceph_queue_inode_work(struct inode *inode, int work_bit) 18323c6f6b79SSage Weil { 183364f28c62SJeff Layton struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 18341cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 183564f28c62SJeff Layton set_bit(work_bit, &ci->i_work_mask); 18361cf89a8dSYan, Zheng 183715a2015fSSage Weil ihold(inode); 183864f28c62SJeff Layton if (queue_work(fsc->inode_wq, &ci->i_work)) { 183964f28c62SJeff Layton dout("queue_inode_work %p, mask=%lx\n", inode, ci->i_work_mask); 18403c6f6b79SSage Weil } else { 184164f28c62SJeff Layton dout("queue_inode_work %p already queued, mask=%lx\n", 18421cf89a8dSYan, Zheng inode, ci->i_work_mask); 18431cf89a8dSYan, Zheng iput(inode); 18441cf89a8dSYan, Zheng } 18451cf89a8dSYan, Zheng } 18461cf89a8dSYan, Zheng 18471cf89a8dSYan, Zheng static void ceph_do_invalidate_pages(struct inode *inode) 18481cf89a8dSYan, Zheng { 18491cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 18506c93df5dSYan, Zheng struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 1851355da1ebSSage Weil u32 orig_gen; 1852355da1ebSSage Weil int check = 0; 1853355da1ebSSage Weil 1854b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 18556c93df5dSYan, Zheng 185650c9132dSJeff Layton if (READ_ONCE(fsc->mount_state) >= CEPH_MOUNT_SHUTDOWN) { 18576c93df5dSYan, Zheng pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n", 18586c93df5dSYan, Zheng inode, ceph_ino(inode)); 18596c93df5dSYan, Zheng mapping_set_error(inode->i_mapping, -EIO); 18606c93df5dSYan, Zheng truncate_pagecache(inode, 0); 18616c93df5dSYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 18626c93df5dSYan, Zheng goto out; 18636c93df5dSYan, Zheng } 18646c93df5dSYan, Zheng 1865be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1866355da1ebSSage Weil dout("invalidate_pages %p gen %d revoking %d\n", inode, 1867355da1ebSSage Weil ci->i_rdcache_gen, ci->i_rdcache_revoking); 1868cd045cb4SSage Weil if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { 18699563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 18709563f88cSYan, Zheng check = 1; 1871be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1872b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1873355da1ebSSage Weil goto out; 1874355da1ebSSage Weil } 1875355da1ebSSage Weil orig_gen = ci->i_rdcache_gen; 1876be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1877355da1ebSSage Weil 18789abd4db7SYan, Zheng if (invalidate_inode_pages2(inode->i_mapping) < 0) { 18799abd4db7SYan, Zheng pr_err("invalidate_pages %p fails\n", inode); 18809abd4db7SYan, Zheng } 1881355da1ebSSage Weil 1882be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1883cd045cb4SSage Weil if (orig_gen == ci->i_rdcache_gen && 1884cd045cb4SSage Weil orig_gen == ci->i_rdcache_revoking) { 1885355da1ebSSage Weil dout("invalidate_pages %p gen %d successful\n", inode, 1886355da1ebSSage Weil ci->i_rdcache_gen); 1887cd045cb4SSage Weil ci->i_rdcache_revoking--; 1888355da1ebSSage Weil check = 1; 1889355da1ebSSage Weil } else { 1890cd045cb4SSage Weil dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", 1891cd045cb4SSage Weil inode, orig_gen, ci->i_rdcache_gen, 1892cd045cb4SSage Weil ci->i_rdcache_revoking); 18939563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 18949563f88cSYan, Zheng check = 1; 1895355da1ebSSage Weil } 1896be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1897b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 18989563f88cSYan, Zheng out: 1899355da1ebSSage Weil if (check) 1900355da1ebSSage Weil ceph_check_caps(ci, 0, NULL); 19013c6f6b79SSage Weil } 19023c6f6b79SSage Weil 19033c6f6b79SSage Weil /* 1904355da1ebSSage Weil * Make sure any pending truncation is applied before doing anything 1905355da1ebSSage Weil * that may depend on it. 1906355da1ebSSage Weil */ 1907b415bf4fSYan, Zheng void __ceph_do_pending_vmtruncate(struct inode *inode) 1908355da1ebSSage Weil { 1909355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1910355da1ebSSage Weil u64 to; 1911a85f50b6SYan, Zheng int wrbuffer_refs, finish = 0; 1912355da1ebSSage Weil 1913b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1914355da1ebSSage Weil retry: 1915be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1916355da1ebSSage Weil if (ci->i_truncate_pending == 0) { 1917355da1ebSSage Weil dout("__do_pending_vmtruncate %p none pending\n", inode); 1918be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1919b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1920355da1ebSSage Weil return; 1921355da1ebSSage Weil } 1922355da1ebSSage Weil 1923355da1ebSSage Weil /* 1924355da1ebSSage Weil * make sure any dirty snapped pages are flushed before we 1925355da1ebSSage Weil * possibly truncate them.. so write AND block! 1926355da1ebSSage Weil */ 1927355da1ebSSage Weil if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { 1928c8fd0d37SYan, Zheng spin_unlock(&ci->i_ceph_lock); 1929355da1ebSSage Weil dout("__do_pending_vmtruncate %p flushing snaps first\n", 1930355da1ebSSage Weil inode); 1931355da1ebSSage Weil filemap_write_and_wait_range(&inode->i_data, 0, 1932355da1ebSSage Weil inode->i_sb->s_maxbytes); 1933355da1ebSSage Weil goto retry; 1934355da1ebSSage Weil } 1935355da1ebSSage Weil 1936b0d7c223SYan, Zheng /* there should be no reader or writer */ 1937b0d7c223SYan, Zheng WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); 1938b0d7c223SYan, Zheng 1939355da1ebSSage Weil to = ci->i_truncate_size; 1940355da1ebSSage Weil wrbuffer_refs = ci->i_wrbuffer_ref; 1941355da1ebSSage Weil dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, 1942355da1ebSSage Weil ci->i_truncate_pending, to); 1943be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1944355da1ebSSage Weil 19454e217b5dSYan, Zheng truncate_pagecache(inode, to); 1946355da1ebSSage Weil 1947be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1948a85f50b6SYan, Zheng if (to == ci->i_truncate_size) { 1949a85f50b6SYan, Zheng ci->i_truncate_pending = 0; 1950a85f50b6SYan, Zheng finish = 1; 1951a85f50b6SYan, Zheng } 1952be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1953a85f50b6SYan, Zheng if (!finish) 1954a85f50b6SYan, Zheng goto retry; 1955355da1ebSSage Weil 1956b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1957b0d7c223SYan, Zheng 1958355da1ebSSage Weil if (wrbuffer_refs == 0) 1959bf73c62eSYan, Zheng ceph_check_caps(ci, 0, NULL); 1960a85f50b6SYan, Zheng 196103066f23SYehuda Sadeh wake_up_all(&ci->i_cap_wq); 1962355da1ebSSage Weil } 1963355da1ebSSage Weil 19641cf89a8dSYan, Zheng static void ceph_inode_work(struct work_struct *work) 19651cf89a8dSYan, Zheng { 19661cf89a8dSYan, Zheng struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 19671cf89a8dSYan, Zheng i_work); 19681cf89a8dSYan, Zheng struct inode *inode = &ci->vfs_inode; 19691cf89a8dSYan, Zheng 19701cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_WRITEBACK, &ci->i_work_mask)) { 19711cf89a8dSYan, Zheng dout("writeback %p\n", inode); 19721cf89a8dSYan, Zheng filemap_fdatawrite(&inode->i_data); 19731cf89a8dSYan, Zheng } 19741cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_INVALIDATE_PAGES, &ci->i_work_mask)) 19751cf89a8dSYan, Zheng ceph_do_invalidate_pages(inode); 19761cf89a8dSYan, Zheng 19771cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_VMTRUNCATE, &ci->i_work_mask)) 19781cf89a8dSYan, Zheng __ceph_do_pending_vmtruncate(inode); 19791cf89a8dSYan, Zheng 1980a8810cdcSJeff Layton if (test_and_clear_bit(CEPH_I_WORK_CHECK_CAPS, &ci->i_work_mask)) 1981a8810cdcSJeff Layton ceph_check_caps(ci, 0, NULL); 1982a8810cdcSJeff Layton 1983a8810cdcSJeff Layton if (test_and_clear_bit(CEPH_I_WORK_FLUSH_SNAPS, &ci->i_work_mask)) 1984a8810cdcSJeff Layton ceph_flush_snaps(ci, NULL); 1985a8810cdcSJeff Layton 19861cf89a8dSYan, Zheng iput(inode); 19871cf89a8dSYan, Zheng } 19881cf89a8dSYan, Zheng 1989355da1ebSSage Weil /* 1990355da1ebSSage Weil * symlinks 1991355da1ebSSage Weil */ 1992355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops = { 19936b255391SAl Viro .get_link = simple_get_link, 19940b932672SYan, Zheng .setattr = ceph_setattr, 19950b932672SYan, Zheng .getattr = ceph_getattr, 19960b932672SYan, Zheng .listxattr = ceph_listxattr, 1997355da1ebSSage Weil }; 1998355da1ebSSage Weil 1999a26feccaSAndreas Gruenbacher int __ceph_setattr(struct inode *inode, struct iattr *attr) 2000355da1ebSSage Weil { 2001355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 2002c62498d7SJeff Layton unsigned int ia_valid = attr->ia_valid; 2003355da1ebSSage Weil struct ceph_mds_request *req; 2004a26feccaSAndreas Gruenbacher struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; 2005f66fd9f0SYan, Zheng struct ceph_cap_flush *prealloc_cf; 2006355da1ebSSage Weil int issued; 2007355da1ebSSage Weil int release = 0, dirtied = 0; 2008355da1ebSSage Weil int mask = 0; 2009355da1ebSSage Weil int err = 0; 2010fca65b4aSSage Weil int inode_dirty_flags = 0; 2011604d1b02SYan, Zheng bool lock_snap_rwsem = false; 2012355da1ebSSage Weil 2013f66fd9f0SYan, Zheng prealloc_cf = ceph_alloc_cap_flush(); 2014f66fd9f0SYan, Zheng if (!prealloc_cf) 2015f66fd9f0SYan, Zheng return -ENOMEM; 2016f66fd9f0SYan, Zheng 2017355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, 2018355da1ebSSage Weil USE_AUTH_MDS); 2019f66fd9f0SYan, Zheng if (IS_ERR(req)) { 2020f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 2021355da1ebSSage Weil return PTR_ERR(req); 2022f66fd9f0SYan, Zheng } 2023355da1ebSSage Weil 2024be655596SSage Weil spin_lock(&ci->i_ceph_lock); 2025355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 2026604d1b02SYan, Zheng 2027604d1b02SYan, Zheng if (!ci->i_head_snapc && 2028604d1b02SYan, Zheng (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { 2029604d1b02SYan, Zheng lock_snap_rwsem = true; 2030604d1b02SYan, Zheng if (!down_read_trylock(&mdsc->snap_rwsem)) { 2031604d1b02SYan, Zheng spin_unlock(&ci->i_ceph_lock); 2032604d1b02SYan, Zheng down_read(&mdsc->snap_rwsem); 2033604d1b02SYan, Zheng spin_lock(&ci->i_ceph_lock); 2034604d1b02SYan, Zheng issued = __ceph_caps_issued(ci, NULL); 2035604d1b02SYan, Zheng } 2036604d1b02SYan, Zheng } 2037604d1b02SYan, Zheng 2038355da1ebSSage Weil dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); 2039355da1ebSSage Weil 2040355da1ebSSage Weil if (ia_valid & ATTR_UID) { 2041355da1ebSSage Weil dout("setattr %p uid %d -> %d\n", inode, 2042bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 2043bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 2044355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2045355da1ebSSage Weil inode->i_uid = attr->ia_uid; 2046355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2047355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2048ab871b90SEric W. Biederman !uid_eq(attr->ia_uid, inode->i_uid)) { 2049ab871b90SEric W. Biederman req->r_args.setattr.uid = cpu_to_le32( 2050ab871b90SEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 2051355da1ebSSage Weil mask |= CEPH_SETATTR_UID; 2052355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2053355da1ebSSage Weil } 2054355da1ebSSage Weil } 2055355da1ebSSage Weil if (ia_valid & ATTR_GID) { 2056355da1ebSSage Weil dout("setattr %p gid %d -> %d\n", inode, 2057bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid), 2058bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 2059355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2060355da1ebSSage Weil inode->i_gid = attr->ia_gid; 2061355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2062355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2063ab871b90SEric W. Biederman !gid_eq(attr->ia_gid, inode->i_gid)) { 2064ab871b90SEric W. Biederman req->r_args.setattr.gid = cpu_to_le32( 2065ab871b90SEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 2066355da1ebSSage Weil mask |= CEPH_SETATTR_GID; 2067355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2068355da1ebSSage Weil } 2069355da1ebSSage Weil } 2070355da1ebSSage Weil if (ia_valid & ATTR_MODE) { 2071355da1ebSSage Weil dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, 2072355da1ebSSage Weil attr->ia_mode); 2073355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2074355da1ebSSage Weil inode->i_mode = attr->ia_mode; 2075355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2076355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2077355da1ebSSage Weil attr->ia_mode != inode->i_mode) { 20787221fe4cSGuangliang Zhao inode->i_mode = attr->ia_mode; 2079355da1ebSSage Weil req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); 2080355da1ebSSage Weil mask |= CEPH_SETATTR_MODE; 2081355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2082355da1ebSSage Weil } 2083355da1ebSSage Weil } 2084355da1ebSSage Weil 2085355da1ebSSage Weil if (ia_valid & ATTR_ATIME) { 208613442b03SDeepa Dinamani dout("setattr %p atime %lld.%ld -> %lld.%ld\n", inode, 20879bbeab41SArnd Bergmann inode->i_atime.tv_sec, inode->i_atime.tv_nsec, 20889bbeab41SArnd Bergmann attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); 2089355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2090355da1ebSSage Weil ci->i_time_warp_seq++; 2091355da1ebSSage Weil inode->i_atime = attr->ia_atime; 2092355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2093355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 209495582b00SDeepa Dinamani timespec64_compare(&inode->i_atime, 2095355da1ebSSage Weil &attr->ia_atime) < 0) { 2096355da1ebSSage Weil inode->i_atime = attr->ia_atime; 2097355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2098355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 209995582b00SDeepa Dinamani !timespec64_equal(&inode->i_atime, &attr->ia_atime)) { 21009bbeab41SArnd Bergmann ceph_encode_timespec64(&req->r_args.setattr.atime, 21019bbeab41SArnd Bergmann &attr->ia_atime); 2102355da1ebSSage Weil mask |= CEPH_SETATTR_ATIME; 2103be70489eSYan, Zheng release |= CEPH_CAP_FILE_SHARED | 2104be70489eSYan, Zheng CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2105355da1ebSSage Weil } 2106355da1ebSSage Weil } 2107c62498d7SJeff Layton if (ia_valid & ATTR_SIZE) { 2108c62498d7SJeff Layton dout("setattr %p size %lld -> %lld\n", inode, 2109c62498d7SJeff Layton inode->i_size, attr->ia_size); 2110c62498d7SJeff Layton if ((issued & CEPH_CAP_FILE_EXCL) && 2111c62498d7SJeff Layton attr->ia_size > inode->i_size) { 2112c62498d7SJeff Layton i_size_write(inode, attr->ia_size); 2113c62498d7SJeff Layton inode->i_blocks = calc_inode_blocks(attr->ia_size); 2114c62498d7SJeff Layton ci->i_reported_size = attr->ia_size; 2115c62498d7SJeff Layton dirtied |= CEPH_CAP_FILE_EXCL; 2116c62498d7SJeff Layton ia_valid |= ATTR_MTIME; 2117c62498d7SJeff Layton } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 2118c62498d7SJeff Layton attr->ia_size != inode->i_size) { 2119c62498d7SJeff Layton req->r_args.setattr.size = cpu_to_le64(attr->ia_size); 2120c62498d7SJeff Layton req->r_args.setattr.old_size = 2121c62498d7SJeff Layton cpu_to_le64(inode->i_size); 2122c62498d7SJeff Layton mask |= CEPH_SETATTR_SIZE; 2123c62498d7SJeff Layton release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL | 2124c62498d7SJeff Layton CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2125c62498d7SJeff Layton } 2126c62498d7SJeff Layton } 2127355da1ebSSage Weil if (ia_valid & ATTR_MTIME) { 212813442b03SDeepa Dinamani dout("setattr %p mtime %lld.%ld -> %lld.%ld\n", inode, 21299bbeab41SArnd Bergmann inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 21309bbeab41SArnd Bergmann attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); 2131355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2132355da1ebSSage Weil ci->i_time_warp_seq++; 2133355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2134355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2135355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 213695582b00SDeepa Dinamani timespec64_compare(&inode->i_mtime, 2137355da1ebSSage Weil &attr->ia_mtime) < 0) { 2138355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2139355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2140355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 214195582b00SDeepa Dinamani !timespec64_equal(&inode->i_mtime, &attr->ia_mtime)) { 21429bbeab41SArnd Bergmann ceph_encode_timespec64(&req->r_args.setattr.mtime, 21439bbeab41SArnd Bergmann &attr->ia_mtime); 2144355da1ebSSage Weil mask |= CEPH_SETATTR_MTIME; 2145be70489eSYan, Zheng release |= CEPH_CAP_FILE_SHARED | 2146be70489eSYan, Zheng CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2147355da1ebSSage Weil } 2148355da1ebSSage Weil } 2149355da1ebSSage Weil 2150355da1ebSSage Weil /* these do nothing */ 2151355da1ebSSage Weil if (ia_valid & ATTR_CTIME) { 2152355da1ebSSage Weil bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| 2153355da1ebSSage Weil ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; 215413442b03SDeepa Dinamani dout("setattr %p ctime %lld.%ld -> %lld.%ld (%s)\n", inode, 21559bbeab41SArnd Bergmann inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 21569bbeab41SArnd Bergmann attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, 2157355da1ebSSage Weil only ? "ctime only" : "ignored"); 2158355da1ebSSage Weil if (only) { 2159355da1ebSSage Weil /* 2160355da1ebSSage Weil * if kernel wants to dirty ctime but nothing else, 2161355da1ebSSage Weil * we need to choose a cap to dirty under, or do 2162355da1ebSSage Weil * a almost-no-op setattr 2163355da1ebSSage Weil */ 2164355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) 2165355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2166355da1ebSSage Weil else if (issued & CEPH_CAP_FILE_EXCL) 2167355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2168355da1ebSSage Weil else if (issued & CEPH_CAP_XATTR_EXCL) 2169355da1ebSSage Weil dirtied |= CEPH_CAP_XATTR_EXCL; 2170355da1ebSSage Weil else 2171355da1ebSSage Weil mask |= CEPH_SETATTR_CTIME; 2172355da1ebSSage Weil } 2173355da1ebSSage Weil } 2174355da1ebSSage Weil if (ia_valid & ATTR_FILE) 2175355da1ebSSage Weil dout("setattr %p ATTR_FILE ... hrm!\n", inode); 2176355da1ebSSage Weil 2177355da1ebSSage Weil if (dirtied) { 2178f66fd9f0SYan, Zheng inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, 2179f66fd9f0SYan, Zheng &prealloc_cf); 21804ca2fea6SYan, Zheng inode->i_ctime = attr->ia_ctime; 2181355da1ebSSage Weil } 2182355da1ebSSage Weil 2183355da1ebSSage Weil release &= issued; 2184be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 2185604d1b02SYan, Zheng if (lock_snap_rwsem) 2186604d1b02SYan, Zheng up_read(&mdsc->snap_rwsem); 2187355da1ebSSage Weil 2188fca65b4aSSage Weil if (inode_dirty_flags) 2189fca65b4aSSage Weil __mark_inode_dirty(inode, inode_dirty_flags); 2190fca65b4aSSage Weil 21917221fe4cSGuangliang Zhao 2192355da1ebSSage Weil if (mask) { 219370b666c3SSage Weil req->r_inode = inode; 219470b666c3SSage Weil ihold(inode); 2195355da1ebSSage Weil req->r_inode_drop = release; 2196355da1ebSSage Weil req->r_args.setattr.mask = cpu_to_le32(mask); 2197355da1ebSSage Weil req->r_num_caps = 1; 21980ed1e90aSArnd Bergmann req->r_stamp = attr->ia_ctime; 2199752c8bdcSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 2200355da1ebSSage Weil } 2201355da1ebSSage Weil dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, 2202355da1ebSSage Weil ceph_cap_string(dirtied), mask); 2203355da1ebSSage Weil 2204355da1ebSSage Weil ceph_mdsc_put_request(req); 22058179a101SYan, Zheng ceph_free_cap_flush(prealloc_cf); 22068179a101SYan, Zheng 22078179a101SYan, Zheng if (err >= 0 && (mask & CEPH_SETATTR_SIZE)) 2208b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 22098179a101SYan, Zheng 2210355da1ebSSage Weil return err; 2211355da1ebSSage Weil } 2212355da1ebSSage Weil 2213355da1ebSSage Weil /* 2214a26feccaSAndreas Gruenbacher * setattr 2215a26feccaSAndreas Gruenbacher */ 2216549c7297SChristian Brauner int ceph_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, 2217549c7297SChristian Brauner struct iattr *attr) 2218a26feccaSAndreas Gruenbacher { 2219fd5472edSJan Kara struct inode *inode = d_inode(dentry); 222036a4c72dSChengguang Xu struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 2221fd5472edSJan Kara int err; 2222fd5472edSJan Kara 2223fd5472edSJan Kara if (ceph_snap(inode) != CEPH_NOSNAP) 2224fd5472edSJan Kara return -EROFS; 2225fd5472edSJan Kara 22262f221d6fSChristian Brauner err = setattr_prepare(&init_user_ns, dentry, attr); 2227fd5472edSJan Kara if (err != 0) 2228fd5472edSJan Kara return err; 2229fd5472edSJan Kara 22302b83845fSLuis Henriques if ((attr->ia_valid & ATTR_SIZE) && 223136a4c72dSChengguang Xu attr->ia_size > max(inode->i_size, fsc->max_file_size)) 223236a4c72dSChengguang Xu return -EFBIG; 223336a4c72dSChengguang Xu 223436a4c72dSChengguang Xu if ((attr->ia_valid & ATTR_SIZE) && 22352b83845fSLuis Henriques ceph_quota_is_max_bytes_exceeded(inode, attr->ia_size)) 22362b83845fSLuis Henriques return -EDQUOT; 22372b83845fSLuis Henriques 22388179a101SYan, Zheng err = __ceph_setattr(inode, attr); 22398179a101SYan, Zheng 22408179a101SYan, Zheng if (err >= 0 && (attr->ia_valid & ATTR_MODE)) 2241e65ce2a5SChristian Brauner err = posix_acl_chmod(&init_user_ns, inode, attr->ia_mode); 22428179a101SYan, Zheng 22438179a101SYan, Zheng return err; 2244a26feccaSAndreas Gruenbacher } 2245a26feccaSAndreas Gruenbacher 2246a26feccaSAndreas Gruenbacher /* 2247355da1ebSSage Weil * Verify that we have a lease on the given mask. If not, 2248355da1ebSSage Weil * do a getattr against an mds. 2249355da1ebSSage Weil */ 225001deead0SYan, Zheng int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 225101deead0SYan, Zheng int mask, bool force) 2252355da1ebSSage Weil { 22533d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 22543d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 2255355da1ebSSage Weil struct ceph_mds_request *req; 225649a9f4f6SYan, Zheng int mode; 2257355da1ebSSage Weil int err; 2258355da1ebSSage Weil 2259355da1ebSSage Weil if (ceph_snap(inode) == CEPH_SNAPDIR) { 2260355da1ebSSage Weil dout("do_getattr inode %p SNAPDIR\n", inode); 2261355da1ebSSage Weil return 0; 2262355da1ebSSage Weil } 2263355da1ebSSage Weil 226401deead0SYan, Zheng dout("do_getattr inode %p mask %s mode 0%o\n", 226501deead0SYan, Zheng inode, ceph_cap_string(mask), inode->i_mode); 22661af16d54SXiubo Li if (!force && ceph_caps_issued_mask_metric(ceph_inode(inode), mask, 1)) 2267355da1ebSSage Weil return 0; 2268355da1ebSSage Weil 226949a9f4f6SYan, Zheng mode = (mask & CEPH_STAT_RSTAT) ? USE_AUTH_MDS : USE_ANY_MDS; 227049a9f4f6SYan, Zheng req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, mode); 2271355da1ebSSage Weil if (IS_ERR(req)) 2272355da1ebSSage Weil return PTR_ERR(req); 227370b666c3SSage Weil req->r_inode = inode; 227470b666c3SSage Weil ihold(inode); 2275355da1ebSSage Weil req->r_num_caps = 1; 2276355da1ebSSage Weil req->r_args.getattr.mask = cpu_to_le32(mask); 227701deead0SYan, Zheng req->r_locked_page = locked_page; 2278355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 227901deead0SYan, Zheng if (locked_page && err == 0) { 228001deead0SYan, Zheng u64 inline_version = req->r_reply_info.targeti.inline_version; 228101deead0SYan, Zheng if (inline_version == 0) { 228201deead0SYan, Zheng /* the reply is supposed to contain inline data */ 228301deead0SYan, Zheng err = -EINVAL; 228401deead0SYan, Zheng } else if (inline_version == CEPH_INLINE_NONE) { 228501deead0SYan, Zheng err = -ENODATA; 228601deead0SYan, Zheng } else { 228701deead0SYan, Zheng err = req->r_reply_info.targeti.inline_len; 228801deead0SYan, Zheng } 228901deead0SYan, Zheng } 2290355da1ebSSage Weil ceph_mdsc_put_request(req); 2291355da1ebSSage Weil dout("do_getattr result=%d\n", err); 2292355da1ebSSage Weil return err; 2293355da1ebSSage Weil } 2294355da1ebSSage Weil 2295355da1ebSSage Weil 2296355da1ebSSage Weil /* 2297355da1ebSSage Weil * Check inode permissions. We verify we have a valid value for 2298355da1ebSSage Weil * the AUTH cap, then call the generic handler. 2299355da1ebSSage Weil */ 2300549c7297SChristian Brauner int ceph_permission(struct user_namespace *mnt_userns, struct inode *inode, 2301549c7297SChristian Brauner int mask) 2302355da1ebSSage Weil { 2303b74c79e9SNick Piggin int err; 2304b74c79e9SNick Piggin 230510556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 2306b74c79e9SNick Piggin return -ECHILD; 2307b74c79e9SNick Piggin 2308508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); 2309355da1ebSSage Weil 2310355da1ebSSage Weil if (!err) 231147291baaSChristian Brauner err = generic_permission(&init_user_ns, inode, mask); 2312355da1ebSSage Weil return err; 2313355da1ebSSage Weil } 2314355da1ebSSage Weil 2315428bb68aSJeff Layton /* Craft a mask of needed caps given a set of requested statx attrs. */ 231604fabb11SJeff Layton static int statx_to_caps(u32 want, umode_t mode) 2317428bb68aSJeff Layton { 2318428bb68aSJeff Layton int mask = 0; 2319428bb68aSJeff Layton 232058981784SJeff Layton if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME)) 2321428bb68aSJeff Layton mask |= CEPH_CAP_AUTH_SHARED; 2322428bb68aSJeff Layton 232304fabb11SJeff Layton if (want & (STATX_NLINK|STATX_CTIME)) { 232404fabb11SJeff Layton /* 232504fabb11SJeff Layton * The link count for directories depends on inode->i_subdirs, 232604fabb11SJeff Layton * and that is only updated when Fs caps are held. 232704fabb11SJeff Layton */ 232804fabb11SJeff Layton if (S_ISDIR(mode)) 232904fabb11SJeff Layton mask |= CEPH_CAP_FILE_SHARED; 233004fabb11SJeff Layton else 2331428bb68aSJeff Layton mask |= CEPH_CAP_LINK_SHARED; 233204fabb11SJeff Layton } 2333428bb68aSJeff Layton 2334428bb68aSJeff Layton if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE| 2335428bb68aSJeff Layton STATX_BLOCKS)) 2336428bb68aSJeff Layton mask |= CEPH_CAP_FILE_SHARED; 2337428bb68aSJeff Layton 2338428bb68aSJeff Layton if (want & (STATX_CTIME)) 2339428bb68aSJeff Layton mask |= CEPH_CAP_XATTR_SHARED; 2340428bb68aSJeff Layton 2341428bb68aSJeff Layton return mask; 2342428bb68aSJeff Layton } 2343428bb68aSJeff Layton 2344355da1ebSSage Weil /* 2345428bb68aSJeff Layton * Get all the attributes. If we have sufficient caps for the requested attrs, 2346428bb68aSJeff Layton * then we can avoid talking to the MDS at all. 2347355da1ebSSage Weil */ 2348549c7297SChristian Brauner int ceph_getattr(struct user_namespace *mnt_userns, const struct path *path, 2349549c7297SChristian Brauner struct kstat *stat, u32 request_mask, unsigned int flags) 2350355da1ebSSage Weil { 2351a528d35eSDavid Howells struct inode *inode = d_inode(path->dentry); 2352232d4b01SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 235358981784SJeff Layton u32 valid_mask = STATX_BASIC_STATS; 2354428bb68aSJeff Layton int err = 0; 2355355da1ebSSage Weil 2356428bb68aSJeff Layton /* Skip the getattr altogether if we're asked not to sync */ 2357428bb68aSJeff Layton if (!(flags & AT_STATX_DONT_SYNC)) { 235804fabb11SJeff Layton err = ceph_do_getattr(inode, 235904fabb11SJeff Layton statx_to_caps(request_mask, inode->i_mode), 2360428bb68aSJeff Layton flags & AT_STATX_FORCE_SYNC); 2361428bb68aSJeff Layton if (err) 2362428bb68aSJeff Layton return err; 2363428bb68aSJeff Layton } 2364428bb68aSJeff Layton 23650d56a451SChristian Brauner generic_fillattr(&init_user_ns, inode, stat); 2366ebce3eb2SJeff Layton stat->ino = ceph_present_inode(inode); 236758981784SJeff Layton 236858981784SJeff Layton /* 236958981784SJeff Layton * btime on newly-allocated inodes is 0, so if this is still set to 237058981784SJeff Layton * that, then assume that it's not valid. 237158981784SJeff Layton */ 237258981784SJeff Layton if (ci->i_btime.tv_sec || ci->i_btime.tv_nsec) { 237358981784SJeff Layton stat->btime = ci->i_btime; 237458981784SJeff Layton valid_mask |= STATX_BTIME; 237558981784SJeff Layton } 237658981784SJeff Layton 237775c9627eSYan, Zheng if (ceph_snap(inode) == CEPH_NOSNAP) 237875c9627eSYan, Zheng stat->dev = inode->i_sb->s_dev; 2379355da1ebSSage Weil else 238075c9627eSYan, Zheng stat->dev = ci->i_snapid_map ? ci->i_snapid_map->dev : 0; 238175c9627eSYan, Zheng 2382232d4b01SSage Weil if (S_ISDIR(inode->i_mode)) { 23831c1266bbSYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), 23841c1266bbSYehuda Sadeh RBYTES)) 2385232d4b01SSage Weil stat->size = ci->i_rbytes; 23861c1266bbSYehuda Sadeh else 23871c1266bbSYehuda Sadeh stat->size = ci->i_files + ci->i_subdirs; 2388232d4b01SSage Weil stat->blocks = 0; 2389355da1ebSSage Weil stat->blksize = 65536; 23908c6286f1SLuis Henriques /* 23918c6286f1SLuis Henriques * Some applications rely on the number of st_nlink 23928c6286f1SLuis Henriques * value on directories to be either 0 (if unlinked) 23938c6286f1SLuis Henriques * or 2 + number of subdirectories. 23948c6286f1SLuis Henriques */ 23958c6286f1SLuis Henriques if (stat->nlink == 1) 23968c6286f1SLuis Henriques /* '.' + '..' + subdirs */ 23978c6286f1SLuis Henriques stat->nlink = 1 + 1 + ci->i_subdirs; 2398355da1ebSSage Weil } 2399428bb68aSJeff Layton 240058981784SJeff Layton stat->result_mask = request_mask & valid_mask; 2401355da1ebSSage Weil return err; 2402355da1ebSSage Weil } 2403