13d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 2355da1ebSSage Weil 3355da1ebSSage Weil #include <linux/module.h> 4355da1ebSSage Weil #include <linux/fs.h> 5355da1ebSSage Weil #include <linux/slab.h> 6355da1ebSSage Weil #include <linux/string.h> 7355da1ebSSage Weil #include <linux/uaccess.h> 8355da1ebSSage Weil #include <linux/kernel.h> 9355da1ebSSage Weil #include <linux/writeback.h> 10355da1ebSSage Weil #include <linux/vmalloc.h> 112cdeb1e4SAndreas Gruenbacher #include <linux/xattr.h> 124db658eaSLinus Torvalds #include <linux/posix_acl.h> 133e7fbe9cSYan, Zheng #include <linux/random.h> 14a407846eSYan, Zheng #include <linux/sort.h> 15355da1ebSSage Weil 16355da1ebSSage Weil #include "super.h" 173d14c5d2SYehuda Sadeh #include "mds_client.h" 1899ccbd22SMilosz Tanski #include "cache.h" 193d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 20355da1ebSSage Weil 21355da1ebSSage Weil /* 22355da1ebSSage Weil * Ceph inode operations 23355da1ebSSage Weil * 24355da1ebSSage Weil * Implement basic inode helpers (get, alloc) and inode ops (getattr, 25355da1ebSSage Weil * setattr, etc.), xattr helpers, and helpers for assimilating 26355da1ebSSage Weil * metadata returned by the MDS into our cache. 27355da1ebSSage Weil * 28355da1ebSSage Weil * Also define helpers for doing asynchronous writeback, invalidation, 29355da1ebSSage Weil * and truncation for the benefit of those who can't afford to block 30355da1ebSSage Weil * (typically because they are in the message handler path). 31355da1ebSSage Weil */ 32355da1ebSSage Weil 33355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops; 34355da1ebSSage Weil 353c6f6b79SSage Weil static void ceph_invalidate_work(struct work_struct *work); 363c6f6b79SSage Weil static void ceph_writeback_work(struct work_struct *work); 373c6f6b79SSage Weil static void ceph_vmtruncate_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 { 44ad1fee96SYehuda Sadeh ceph_inode(inode)->i_vino = *(struct ceph_vino *)data; 45ad1fee96SYehuda Sadeh inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data); 46ad1fee96SYehuda Sadeh return 0; 47ad1fee96SYehuda Sadeh } 48ad1fee96SYehuda Sadeh 49355da1ebSSage Weil struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) 50355da1ebSSage Weil { 51355da1ebSSage Weil struct inode *inode; 52355da1ebSSage Weil ino_t t = ceph_vino_to_ino(vino); 53355da1ebSSage Weil 54355da1ebSSage Weil inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino); 55355da1ebSSage Weil if (inode == NULL) 56355da1ebSSage Weil return ERR_PTR(-ENOMEM); 57355da1ebSSage Weil if (inode->i_state & I_NEW) { 58355da1ebSSage Weil dout("get_inode created new inode %p %llx.%llx ino %llx\n", 59355da1ebSSage Weil inode, ceph_vinop(inode), (u64)inode->i_ino); 60355da1ebSSage Weil unlock_new_inode(inode); 61355da1ebSSage Weil } 62355da1ebSSage Weil 63355da1ebSSage Weil dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino, 64355da1ebSSage Weil vino.snap, inode); 65355da1ebSSage Weil return inode; 66355da1ebSSage Weil } 67355da1ebSSage Weil 68355da1ebSSage Weil /* 69355da1ebSSage Weil * get/constuct snapdir inode for a given directory 70355da1ebSSage Weil */ 71355da1ebSSage Weil struct inode *ceph_get_snapdir(struct inode *parent) 72355da1ebSSage Weil { 73355da1ebSSage Weil struct ceph_vino vino = { 74355da1ebSSage Weil .ino = ceph_ino(parent), 75355da1ebSSage Weil .snap = CEPH_SNAPDIR, 76355da1ebSSage Weil }; 77355da1ebSSage Weil struct inode *inode = ceph_get_inode(parent->i_sb, vino); 78b377ff13SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 79355da1ebSSage Weil 80355da1ebSSage Weil BUG_ON(!S_ISDIR(parent->i_mode)); 81355da1ebSSage Weil if (IS_ERR(inode)) 827e34bc52SJulia Lawall return inode; 83355da1ebSSage Weil inode->i_mode = parent->i_mode; 84355da1ebSSage Weil inode->i_uid = parent->i_uid; 85355da1ebSSage Weil inode->i_gid = parent->i_gid; 8638c48b5fSYan, Zheng inode->i_op = &ceph_snapdir_iops; 8738c48b5fSYan, Zheng inode->i_fop = &ceph_snapdir_fops; 88b377ff13SSage Weil ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ 89b377ff13SSage Weil ci->i_rbytes = 0; 90355da1ebSSage Weil return inode; 91355da1ebSSage Weil } 92355da1ebSSage Weil 93355da1ebSSage Weil const struct inode_operations ceph_file_iops = { 94355da1ebSSage Weil .permission = ceph_permission, 95355da1ebSSage Weil .setattr = ceph_setattr, 96355da1ebSSage Weil .getattr = ceph_getattr, 972cdeb1e4SAndreas Gruenbacher .setxattr = generic_setxattr, 982cdeb1e4SAndreas Gruenbacher .getxattr = generic_getxattr, 99355da1ebSSage Weil .listxattr = ceph_listxattr, 1002cdeb1e4SAndreas Gruenbacher .removexattr = generic_removexattr, 1017221fe4cSGuangliang Zhao .get_acl = ceph_get_acl, 10272466d0bSSage Weil .set_acl = ceph_set_acl, 103355da1ebSSage Weil }; 104355da1ebSSage Weil 105355da1ebSSage Weil 106355da1ebSSage Weil /* 107355da1ebSSage Weil * We use a 'frag tree' to keep track of the MDS's directory fragments 108355da1ebSSage Weil * for a given inode (usually there is just a single fragment). We 109355da1ebSSage Weil * need to know when a child frag is delegated to a new MDS, or when 110355da1ebSSage Weil * it is flagged as replicated, so we can direct our requests 111355da1ebSSage Weil * accordingly. 112355da1ebSSage Weil */ 113355da1ebSSage Weil 114355da1ebSSage Weil /* 115355da1ebSSage Weil * find/create a frag in the tree 116355da1ebSSage Weil */ 117355da1ebSSage Weil static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, 118355da1ebSSage Weil u32 f) 119355da1ebSSage Weil { 120355da1ebSSage Weil struct rb_node **p; 121355da1ebSSage Weil struct rb_node *parent = NULL; 122355da1ebSSage Weil struct ceph_inode_frag *frag; 123355da1ebSSage Weil int c; 124355da1ebSSage Weil 125355da1ebSSage Weil p = &ci->i_fragtree.rb_node; 126355da1ebSSage Weil while (*p) { 127355da1ebSSage Weil parent = *p; 128355da1ebSSage Weil frag = rb_entry(parent, struct ceph_inode_frag, node); 129355da1ebSSage Weil c = ceph_frag_compare(f, frag->frag); 130355da1ebSSage Weil if (c < 0) 131355da1ebSSage Weil p = &(*p)->rb_left; 132355da1ebSSage Weil else if (c > 0) 133355da1ebSSage Weil p = &(*p)->rb_right; 134355da1ebSSage Weil else 135355da1ebSSage Weil return frag; 136355da1ebSSage Weil } 137355da1ebSSage Weil 138355da1ebSSage Weil frag = kmalloc(sizeof(*frag), GFP_NOFS); 139355da1ebSSage Weil if (!frag) { 140355da1ebSSage Weil pr_err("__get_or_create_frag ENOMEM on %p %llx.%llx " 141355da1ebSSage Weil "frag %x\n", &ci->vfs_inode, 142355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 143355da1ebSSage Weil return ERR_PTR(-ENOMEM); 144355da1ebSSage Weil } 145355da1ebSSage Weil frag->frag = f; 146355da1ebSSage Weil frag->split_by = 0; 147355da1ebSSage Weil frag->mds = -1; 148355da1ebSSage Weil frag->ndist = 0; 149355da1ebSSage Weil 150355da1ebSSage Weil rb_link_node(&frag->node, parent, p); 151355da1ebSSage Weil rb_insert_color(&frag->node, &ci->i_fragtree); 152355da1ebSSage Weil 153355da1ebSSage Weil dout("get_or_create_frag added %llx.%llx frag %x\n", 154355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 155355da1ebSSage Weil return frag; 156355da1ebSSage Weil } 157355da1ebSSage Weil 158355da1ebSSage Weil /* 159355da1ebSSage Weil * find a specific frag @f 160355da1ebSSage Weil */ 161355da1ebSSage Weil struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) 162355da1ebSSage Weil { 163355da1ebSSage Weil struct rb_node *n = ci->i_fragtree.rb_node; 164355da1ebSSage Weil 165355da1ebSSage Weil while (n) { 166355da1ebSSage Weil struct ceph_inode_frag *frag = 167355da1ebSSage Weil rb_entry(n, struct ceph_inode_frag, node); 168355da1ebSSage Weil int c = ceph_frag_compare(f, frag->frag); 169355da1ebSSage Weil if (c < 0) 170355da1ebSSage Weil n = n->rb_left; 171355da1ebSSage Weil else if (c > 0) 172355da1ebSSage Weil n = n->rb_right; 173355da1ebSSage Weil else 174355da1ebSSage Weil return frag; 175355da1ebSSage Weil } 176355da1ebSSage Weil return NULL; 177355da1ebSSage Weil } 178355da1ebSSage Weil 179355da1ebSSage Weil /* 180355da1ebSSage Weil * Choose frag containing the given value @v. If @pfrag is 181355da1ebSSage Weil * specified, copy the frag delegation info to the caller if 182355da1ebSSage Weil * it is present. 183355da1ebSSage Weil */ 1843e7fbe9cSYan, Zheng static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 1853e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 186355da1ebSSage Weil { 187355da1ebSSage Weil u32 t = ceph_frag_make(0, 0); 188355da1ebSSage Weil struct ceph_inode_frag *frag; 189355da1ebSSage Weil unsigned nway, i; 190355da1ebSSage Weil u32 n; 191355da1ebSSage Weil 192355da1ebSSage Weil if (found) 193355da1ebSSage Weil *found = 0; 194355da1ebSSage Weil 195355da1ebSSage Weil while (1) { 196355da1ebSSage Weil WARN_ON(!ceph_frag_contains_value(t, v)); 197355da1ebSSage Weil frag = __ceph_find_frag(ci, t); 198355da1ebSSage Weil if (!frag) 199355da1ebSSage Weil break; /* t is a leaf */ 200355da1ebSSage Weil if (frag->split_by == 0) { 201355da1ebSSage Weil if (pfrag) 202355da1ebSSage Weil memcpy(pfrag, frag, sizeof(*pfrag)); 203355da1ebSSage Weil if (found) 204355da1ebSSage Weil *found = 1; 205355da1ebSSage Weil break; 206355da1ebSSage Weil } 207355da1ebSSage Weil 208355da1ebSSage Weil /* choose child */ 209355da1ebSSage Weil nway = 1 << frag->split_by; 210355da1ebSSage Weil dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, 211355da1ebSSage Weil frag->split_by, nway); 212355da1ebSSage Weil for (i = 0; i < nway; i++) { 213355da1ebSSage Weil n = ceph_frag_make_child(t, frag->split_by, i); 214355da1ebSSage Weil if (ceph_frag_contains_value(n, v)) { 215355da1ebSSage Weil t = n; 216355da1ebSSage Weil break; 217355da1ebSSage Weil } 218355da1ebSSage Weil } 219355da1ebSSage Weil BUG_ON(i == nway); 220355da1ebSSage Weil } 221355da1ebSSage Weil dout("choose_frag(%x) = %x\n", v, t); 222355da1ebSSage Weil 223355da1ebSSage Weil return t; 224355da1ebSSage Weil } 225355da1ebSSage Weil 2263e7fbe9cSYan, Zheng u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2273e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 2283e7fbe9cSYan, Zheng { 2293e7fbe9cSYan, Zheng u32 ret; 2303e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 2313e7fbe9cSYan, Zheng ret = __ceph_choose_frag(ci, v, pfrag, found); 2323e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 2333e7fbe9cSYan, Zheng return ret; 2343e7fbe9cSYan, Zheng } 2353e7fbe9cSYan, Zheng 236355da1ebSSage Weil /* 237355da1ebSSage Weil * Process dirfrag (delegation) info from the mds. Include leaf 238355da1ebSSage Weil * fragment in tree ONLY if ndist > 0. Otherwise, only 239355da1ebSSage Weil * branches/splits are included in i_fragtree) 240355da1ebSSage Weil */ 241355da1ebSSage Weil static int ceph_fill_dirfrag(struct inode *inode, 242355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo) 243355da1ebSSage Weil { 244355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 245355da1ebSSage Weil struct ceph_inode_frag *frag; 246355da1ebSSage Weil u32 id = le32_to_cpu(dirinfo->frag); 247355da1ebSSage Weil int mds = le32_to_cpu(dirinfo->auth); 248355da1ebSSage Weil int ndist = le32_to_cpu(dirinfo->ndist); 2498d08503cSYan, Zheng int diri_auth = -1; 250355da1ebSSage Weil int i; 251355da1ebSSage Weil int err = 0; 252355da1ebSSage Weil 2538d08503cSYan, Zheng spin_lock(&ci->i_ceph_lock); 2548d08503cSYan, Zheng if (ci->i_auth_cap) 2558d08503cSYan, Zheng diri_auth = ci->i_auth_cap->mds; 2568d08503cSYan, Zheng spin_unlock(&ci->i_ceph_lock); 2578d08503cSYan, Zheng 25842172119SYan, Zheng if (mds == -1) /* CDIR_AUTH_PARENT */ 25942172119SYan, Zheng mds = diri_auth; 26042172119SYan, Zheng 261355da1ebSSage Weil mutex_lock(&ci->i_fragtree_mutex); 2628d08503cSYan, Zheng if (ndist == 0 && mds == diri_auth) { 263355da1ebSSage Weil /* no delegation info needed. */ 264355da1ebSSage Weil frag = __ceph_find_frag(ci, id); 265355da1ebSSage Weil if (!frag) 266355da1ebSSage Weil goto out; 267355da1ebSSage Weil if (frag->split_by == 0) { 268355da1ebSSage Weil /* tree leaf, remove */ 269355da1ebSSage Weil dout("fill_dirfrag removed %llx.%llx frag %x" 270355da1ebSSage Weil " (no ref)\n", ceph_vinop(inode), id); 271355da1ebSSage Weil rb_erase(&frag->node, &ci->i_fragtree); 272355da1ebSSage Weil kfree(frag); 273355da1ebSSage Weil } else { 274355da1ebSSage Weil /* tree branch, keep and clear */ 275355da1ebSSage Weil dout("fill_dirfrag cleared %llx.%llx frag %x" 276355da1ebSSage Weil " referral\n", ceph_vinop(inode), id); 277355da1ebSSage Weil frag->mds = -1; 278355da1ebSSage Weil frag->ndist = 0; 279355da1ebSSage Weil } 280355da1ebSSage Weil goto out; 281355da1ebSSage Weil } 282355da1ebSSage Weil 283355da1ebSSage Weil 284355da1ebSSage Weil /* find/add this frag to store mds delegation info */ 285355da1ebSSage Weil frag = __get_or_create_frag(ci, id); 286355da1ebSSage Weil if (IS_ERR(frag)) { 287355da1ebSSage Weil /* this is not the end of the world; we can continue 288355da1ebSSage Weil with bad/inaccurate delegation info */ 289355da1ebSSage Weil pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", 290355da1ebSSage Weil ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); 291355da1ebSSage Weil err = -ENOMEM; 292355da1ebSSage Weil goto out; 293355da1ebSSage Weil } 294355da1ebSSage Weil 295355da1ebSSage Weil frag->mds = mds; 296355da1ebSSage Weil frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); 297355da1ebSSage Weil for (i = 0; i < frag->ndist; i++) 298355da1ebSSage Weil frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); 299355da1ebSSage Weil dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", 300355da1ebSSage Weil ceph_vinop(inode), frag->frag, frag->ndist); 301355da1ebSSage Weil 302355da1ebSSage Weil out: 303355da1ebSSage Weil mutex_unlock(&ci->i_fragtree_mutex); 304355da1ebSSage Weil return err; 305355da1ebSSage Weil } 306355da1ebSSage Weil 307a407846eSYan, Zheng static int frag_tree_split_cmp(const void *l, const void *r) 308a407846eSYan, Zheng { 309a407846eSYan, Zheng struct ceph_frag_tree_split *ls = (struct ceph_frag_tree_split*)l; 310a407846eSYan, Zheng struct ceph_frag_tree_split *rs = (struct ceph_frag_tree_split*)r; 311a407846eSYan, Zheng return ceph_frag_compare(ls->frag, rs->frag); 312a407846eSYan, Zheng } 313a407846eSYan, Zheng 314a4b7431fSYan, Zheng static bool is_frag_child(u32 f, struct ceph_inode_frag *frag) 315a4b7431fSYan, Zheng { 316a4b7431fSYan, Zheng if (!frag) 317a4b7431fSYan, Zheng return f == ceph_frag_make(0, 0); 318a4b7431fSYan, Zheng if (ceph_frag_bits(f) != ceph_frag_bits(frag->frag) + frag->split_by) 319a4b7431fSYan, Zheng return false; 320a4b7431fSYan, Zheng return ceph_frag_contains_value(frag->frag, ceph_frag_value(f)); 321a4b7431fSYan, Zheng } 322a4b7431fSYan, Zheng 3233e7fbe9cSYan, Zheng static int ceph_fill_fragtree(struct inode *inode, 3243e7fbe9cSYan, Zheng struct ceph_frag_tree_head *fragtree, 3253e7fbe9cSYan, Zheng struct ceph_mds_reply_dirfrag *dirinfo) 3263e7fbe9cSYan, Zheng { 3273e7fbe9cSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 328a4b7431fSYan, Zheng struct ceph_inode_frag *frag, *prev_frag = NULL; 3293e7fbe9cSYan, Zheng struct rb_node *rb_node; 3301b1bc16dSYan, Zheng unsigned i, split_by, nsplits; 3311b1bc16dSYan, Zheng u32 id; 3323e7fbe9cSYan, Zheng bool update = false; 3333e7fbe9cSYan, Zheng 3343e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 3353e7fbe9cSYan, Zheng nsplits = le32_to_cpu(fragtree->nsplits); 3361b1bc16dSYan, Zheng if (nsplits != ci->i_fragtree_nsplits) { 3371b1bc16dSYan, Zheng update = true; 3381b1bc16dSYan, Zheng } else if (nsplits) { 3393e7fbe9cSYan, Zheng i = prandom_u32() % nsplits; 3403e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3413e7fbe9cSYan, Zheng if (!__ceph_find_frag(ci, id)) 3423e7fbe9cSYan, Zheng update = true; 3433e7fbe9cSYan, Zheng } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { 3443e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3453e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3463e7fbe9cSYan, Zheng if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) 3473e7fbe9cSYan, Zheng update = true; 3483e7fbe9cSYan, Zheng } 3493e7fbe9cSYan, Zheng if (!update && dirinfo) { 3503e7fbe9cSYan, Zheng id = le32_to_cpu(dirinfo->frag); 3513e7fbe9cSYan, Zheng if (id != __ceph_choose_frag(ci, id, NULL, NULL)) 3523e7fbe9cSYan, Zheng update = true; 3533e7fbe9cSYan, Zheng } 3543e7fbe9cSYan, Zheng if (!update) 3553e7fbe9cSYan, Zheng goto out_unlock; 3563e7fbe9cSYan, Zheng 357a407846eSYan, Zheng if (nsplits > 1) { 358a407846eSYan, Zheng sort(fragtree->splits, nsplits, sizeof(fragtree->splits[0]), 359a407846eSYan, Zheng frag_tree_split_cmp, NULL); 360a407846eSYan, Zheng } 361a407846eSYan, Zheng 3623e7fbe9cSYan, Zheng dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); 3633e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3643e7fbe9cSYan, Zheng for (i = 0; i < nsplits; i++) { 3653e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3661b1bc16dSYan, Zheng split_by = le32_to_cpu(fragtree->splits[i].by); 3671b1bc16dSYan, Zheng if (split_by == 0 || ceph_frag_bits(id) + split_by > 24) { 3681b1bc16dSYan, Zheng pr_err("fill_fragtree %llx.%llx invalid split %d/%u, " 3691b1bc16dSYan, Zheng "frag %x split by %d\n", ceph_vinop(inode), 3701b1bc16dSYan, Zheng i, nsplits, id, split_by); 3711b1bc16dSYan, Zheng continue; 3721b1bc16dSYan, Zheng } 3733e7fbe9cSYan, Zheng frag = NULL; 3743e7fbe9cSYan, Zheng while (rb_node) { 3753e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3763e7fbe9cSYan, Zheng if (ceph_frag_compare(frag->frag, id) >= 0) { 3773e7fbe9cSYan, Zheng if (frag->frag != id) 3783e7fbe9cSYan, Zheng frag = NULL; 3793e7fbe9cSYan, Zheng else 3803e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3813e7fbe9cSYan, Zheng break; 3823e7fbe9cSYan, Zheng } 3833e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 384a4b7431fSYan, Zheng /* delete stale split/leaf node */ 385a4b7431fSYan, Zheng if (frag->split_by > 0 || 386a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 3873e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 3881b1bc16dSYan, Zheng if (frag->split_by > 0) 3891b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 3903e7fbe9cSYan, Zheng kfree(frag); 391a4b7431fSYan, Zheng } 3923e7fbe9cSYan, Zheng frag = NULL; 3933e7fbe9cSYan, Zheng } 3943e7fbe9cSYan, Zheng if (!frag) { 3953e7fbe9cSYan, Zheng frag = __get_or_create_frag(ci, id); 3963e7fbe9cSYan, Zheng if (IS_ERR(frag)) 3973e7fbe9cSYan, Zheng continue; 3983e7fbe9cSYan, Zheng } 3991b1bc16dSYan, Zheng if (frag->split_by == 0) 4001b1bc16dSYan, Zheng ci->i_fragtree_nsplits++; 4011b1bc16dSYan, Zheng frag->split_by = split_by; 4023e7fbe9cSYan, Zheng dout(" frag %x split by %d\n", frag->frag, frag->split_by); 403a4b7431fSYan, Zheng prev_frag = frag; 4043e7fbe9cSYan, Zheng } 4053e7fbe9cSYan, Zheng while (rb_node) { 4063e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 4073e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 408a4b7431fSYan, Zheng /* delete stale split/leaf node */ 409a4b7431fSYan, Zheng if (frag->split_by > 0 || 410a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 4113e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 4121b1bc16dSYan, Zheng if (frag->split_by > 0) 4131b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 4143e7fbe9cSYan, Zheng kfree(frag); 4153e7fbe9cSYan, Zheng } 416a4b7431fSYan, Zheng } 4173e7fbe9cSYan, Zheng out_unlock: 4183e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 4193e7fbe9cSYan, Zheng return 0; 4203e7fbe9cSYan, Zheng } 421355da1ebSSage Weil 422355da1ebSSage Weil /* 423355da1ebSSage Weil * initialize a newly allocated inode. 424355da1ebSSage Weil */ 425355da1ebSSage Weil struct inode *ceph_alloc_inode(struct super_block *sb) 426355da1ebSSage Weil { 427355da1ebSSage Weil struct ceph_inode_info *ci; 428355da1ebSSage Weil int i; 429355da1ebSSage Weil 430355da1ebSSage Weil ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); 431355da1ebSSage Weil if (!ci) 432355da1ebSSage Weil return NULL; 433355da1ebSSage Weil 434355da1ebSSage Weil dout("alloc_inode %p\n", &ci->vfs_inode); 435355da1ebSSage Weil 436be655596SSage Weil spin_lock_init(&ci->i_ceph_lock); 437be655596SSage Weil 438355da1ebSSage Weil ci->i_version = 0; 43931c542a1SYan, Zheng ci->i_inline_version = 0; 440355da1ebSSage Weil ci->i_time_warp_seq = 0; 441355da1ebSSage Weil ci->i_ceph_flags = 0; 442fdd4e158SYan, Zheng atomic64_set(&ci->i_ordered_count, 1); 443fdd4e158SYan, Zheng atomic64_set(&ci->i_release_count, 1); 444fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], 0); 445fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], 0); 446355da1ebSSage Weil ci->i_symlink = NULL; 447355da1ebSSage Weil 4486c0f3af7SSage Weil memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); 44930c156d9SYan, Zheng RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL); 4506c0f3af7SSage Weil 451355da1ebSSage Weil ci->i_fragtree = RB_ROOT; 452355da1ebSSage Weil mutex_init(&ci->i_fragtree_mutex); 453355da1ebSSage Weil 454355da1ebSSage Weil ci->i_xattrs.blob = NULL; 455355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 456355da1ebSSage Weil ci->i_xattrs.dirty = false; 457355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 458355da1ebSSage Weil ci->i_xattrs.count = 0; 459355da1ebSSage Weil ci->i_xattrs.names_size = 0; 460355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 461355da1ebSSage Weil ci->i_xattrs.version = 0; 462355da1ebSSage Weil ci->i_xattrs.index_version = 0; 463355da1ebSSage Weil 464355da1ebSSage Weil ci->i_caps = RB_ROOT; 465355da1ebSSage Weil ci->i_auth_cap = NULL; 466355da1ebSSage Weil ci->i_dirty_caps = 0; 467355da1ebSSage Weil ci->i_flushing_caps = 0; 468355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_dirty_item); 469355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_flushing_item); 470f66fd9f0SYan, Zheng ci->i_prealloc_cap_flush = NULL; 471553adfd9SYan, Zheng ci->i_cap_flush_tree = RB_ROOT; 472355da1ebSSage Weil init_waitqueue_head(&ci->i_cap_wq); 473355da1ebSSage Weil ci->i_hold_caps_min = 0; 474355da1ebSSage Weil ci->i_hold_caps_max = 0; 475355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_delay_list); 476355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_snaps); 477355da1ebSSage Weil ci->i_head_snapc = NULL; 478355da1ebSSage Weil ci->i_snap_caps = 0; 479355da1ebSSage Weil 480774a6a11SYan, Zheng for (i = 0; i < CEPH_FILE_MODE_BITS; i++) 481355da1ebSSage Weil ci->i_nr_by_mode[i] = 0; 482355da1ebSSage Weil 483b0d7c223SYan, Zheng mutex_init(&ci->i_truncate_mutex); 484355da1ebSSage Weil ci->i_truncate_seq = 0; 485355da1ebSSage Weil ci->i_truncate_size = 0; 486355da1ebSSage Weil ci->i_truncate_pending = 0; 487355da1ebSSage Weil 488355da1ebSSage Weil ci->i_max_size = 0; 489355da1ebSSage Weil ci->i_reported_size = 0; 490355da1ebSSage Weil ci->i_wanted_max_size = 0; 491355da1ebSSage Weil ci->i_requested_max_size = 0; 492355da1ebSSage Weil 493355da1ebSSage Weil ci->i_pin_ref = 0; 494355da1ebSSage Weil ci->i_rd_ref = 0; 495355da1ebSSage Weil ci->i_rdcache_ref = 0; 496355da1ebSSage Weil ci->i_wr_ref = 0; 497d3d0720dSHenry C Chang ci->i_wb_ref = 0; 498355da1ebSSage Weil ci->i_wrbuffer_ref = 0; 499355da1ebSSage Weil ci->i_wrbuffer_ref_head = 0; 500355da1ebSSage Weil ci->i_shared_gen = 0; 501355da1ebSSage Weil ci->i_rdcache_gen = 0; 502355da1ebSSage Weil ci->i_rdcache_revoking = 0; 503355da1ebSSage Weil 504355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_writes); 505355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_dirops); 50668cd5b4bSYan, Zheng INIT_LIST_HEAD(&ci->i_unsafe_iops); 507355da1ebSSage Weil spin_lock_init(&ci->i_unsafe_lock); 508355da1ebSSage Weil 509355da1ebSSage Weil ci->i_snap_realm = NULL; 510355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_realm_item); 511355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_flush_item); 512355da1ebSSage Weil 5133c6f6b79SSage Weil INIT_WORK(&ci->i_wb_work, ceph_writeback_work); 5143c6f6b79SSage Weil INIT_WORK(&ci->i_pg_inv_work, ceph_invalidate_work); 515355da1ebSSage Weil 516355da1ebSSage Weil INIT_WORK(&ci->i_vmtruncate_work, ceph_vmtruncate_work); 517355da1ebSSage Weil 51899ccbd22SMilosz Tanski ceph_fscache_inode_init(ci); 51999ccbd22SMilosz Tanski 520355da1ebSSage Weil return &ci->vfs_inode; 521355da1ebSSage Weil } 522355da1ebSSage Weil 523fa0d7e3dSNick Piggin static void ceph_i_callback(struct rcu_head *head) 524fa0d7e3dSNick Piggin { 525fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 526fa0d7e3dSNick Piggin struct ceph_inode_info *ci = ceph_inode(inode); 527fa0d7e3dSNick Piggin 528fa0d7e3dSNick Piggin kmem_cache_free(ceph_inode_cachep, ci); 529fa0d7e3dSNick Piggin } 530fa0d7e3dSNick Piggin 531355da1ebSSage Weil void ceph_destroy_inode(struct inode *inode) 532355da1ebSSage Weil { 533355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 534355da1ebSSage Weil struct ceph_inode_frag *frag; 535355da1ebSSage Weil struct rb_node *n; 536355da1ebSSage Weil 537355da1ebSSage Weil dout("destroy_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); 538355da1ebSSage Weil 53999ccbd22SMilosz Tanski ceph_fscache_unregister_inode_cookie(ci); 54099ccbd22SMilosz Tanski 541355da1ebSSage Weil ceph_queue_caps_release(inode); 542355da1ebSSage Weil 5438b218b8aSSage Weil /* 5448b218b8aSSage Weil * we may still have a snap_realm reference if there are stray 545d9df2783SYan, Zheng * caps in i_snap_caps. 5468b218b8aSSage Weil */ 5478b218b8aSSage Weil if (ci->i_snap_realm) { 5488b218b8aSSage Weil struct ceph_mds_client *mdsc = 5493d14c5d2SYehuda Sadeh ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; 5508b218b8aSSage Weil struct ceph_snap_realm *realm = ci->i_snap_realm; 5518b218b8aSSage Weil 5528b218b8aSSage Weil dout(" dropping residual ref to snap realm %p\n", realm); 5538b218b8aSSage Weil spin_lock(&realm->inodes_with_caps_lock); 5548b218b8aSSage Weil list_del_init(&ci->i_snap_realm_item); 5558b218b8aSSage Weil spin_unlock(&realm->inodes_with_caps_lock); 5568b218b8aSSage Weil ceph_put_snap_realm(mdsc, realm); 5578b218b8aSSage Weil } 5588b218b8aSSage Weil 559355da1ebSSage Weil kfree(ci->i_symlink); 560355da1ebSSage Weil while ((n = rb_first(&ci->i_fragtree)) != NULL) { 561355da1ebSSage Weil frag = rb_entry(n, struct ceph_inode_frag, node); 562355da1ebSSage Weil rb_erase(n, &ci->i_fragtree); 563355da1ebSSage Weil kfree(frag); 564355da1ebSSage Weil } 5651b1bc16dSYan, Zheng ci->i_fragtree_nsplits = 0; 566355da1ebSSage Weil 567355da1ebSSage Weil __ceph_destroy_xattrs(ci); 568b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 569355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 570b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 571355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 572355da1ebSSage Weil 573779fe0fbSYan, Zheng ceph_put_string(rcu_dereference_raw(ci->i_layout.pool_ns)); 57430c156d9SYan, Zheng 575fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, ceph_i_callback); 576355da1ebSSage Weil } 577355da1ebSSage Weil 5789f12bd11SYan, Zheng int ceph_drop_inode(struct inode *inode) 5799f12bd11SYan, Zheng { 5809f12bd11SYan, Zheng /* 5819f12bd11SYan, Zheng * Positve dentry and corresponding inode are always accompanied 5829f12bd11SYan, Zheng * in MDS reply. So no need to keep inode in the cache after 5839f12bd11SYan, Zheng * dropping all its aliases. 5849f12bd11SYan, Zheng */ 5859f12bd11SYan, Zheng return 1; 5869f12bd11SYan, Zheng } 5879f12bd11SYan, Zheng 5889a5530c6SYan, Zheng void ceph_evict_inode(struct inode *inode) 5899a5530c6SYan, Zheng { 5909a5530c6SYan, Zheng /* wait unsafe sync writes */ 5919a5530c6SYan, Zheng ceph_sync_write_wait(inode); 5929a5530c6SYan, Zheng truncate_inode_pages_final(&inode->i_data); 5939a5530c6SYan, Zheng clear_inode(inode); 5949a5530c6SYan, Zheng } 5959a5530c6SYan, Zheng 596224a7542SYan, Zheng static inline blkcnt_t calc_inode_blocks(u64 size) 597224a7542SYan, Zheng { 598224a7542SYan, Zheng return (size + (1<<9) - 1) >> 9; 599224a7542SYan, Zheng } 600224a7542SYan, Zheng 601355da1ebSSage Weil /* 602355da1ebSSage Weil * Helpers to fill in size, ctime, mtime, and atime. We have to be 603355da1ebSSage Weil * careful because either the client or MDS may have more up to date 604355da1ebSSage Weil * info, depending on which capabilities are held, and whether 605355da1ebSSage Weil * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime 606355da1ebSSage Weil * and size are monotonically increasing, except when utimes() or 607355da1ebSSage Weil * truncate() increments the corresponding _seq values.) 608355da1ebSSage Weil */ 609355da1ebSSage Weil int ceph_fill_file_size(struct inode *inode, int issued, 610355da1ebSSage Weil u32 truncate_seq, u64 truncate_size, u64 size) 611355da1ebSSage Weil { 612355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 613355da1ebSSage Weil int queue_trunc = 0; 614355da1ebSSage Weil 615355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || 616355da1ebSSage Weil (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { 617355da1ebSSage Weil dout("size %lld -> %llu\n", inode->i_size, size); 618a3d714c3SYan, Zheng if (size > 0 && S_ISDIR(inode->i_mode)) { 619a3d714c3SYan, Zheng pr_err("fill_file_size non-zero size for directory\n"); 620a3d714c3SYan, Zheng size = 0; 621a3d714c3SYan, Zheng } 62299c88e69SYan, Zheng i_size_write(inode, size); 623224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 624355da1ebSSage Weil ci->i_reported_size = size; 625355da1ebSSage Weil if (truncate_seq != ci->i_truncate_seq) { 626355da1ebSSage Weil dout("truncate_seq %u -> %u\n", 627355da1ebSSage Weil ci->i_truncate_seq, truncate_seq); 628355da1ebSSage Weil ci->i_truncate_seq = truncate_seq; 629b0d7c223SYan, Zheng 630b0d7c223SYan, Zheng /* the MDS should have revoked these caps */ 631b0d7c223SYan, Zheng WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | 632b0d7c223SYan, Zheng CEPH_CAP_FILE_RD | 633b0d7c223SYan, Zheng CEPH_CAP_FILE_WR | 634b0d7c223SYan, Zheng CEPH_CAP_FILE_LAZYIO)); 6353d497d85SYehuda Sadeh /* 6363d497d85SYehuda Sadeh * If we hold relevant caps, or in the case where we're 6373d497d85SYehuda Sadeh * not the only client referencing this file and we 6383d497d85SYehuda Sadeh * don't hold those caps, then we need to check whether 6393d497d85SYehuda Sadeh * the file is either opened or mmaped 6403d497d85SYehuda Sadeh */ 641b0d7c223SYan, Zheng if ((issued & (CEPH_CAP_FILE_CACHE| 642b0d7c223SYan, Zheng CEPH_CAP_FILE_BUFFER)) || 6433d497d85SYehuda Sadeh mapping_mapped(inode->i_mapping) || 6443d497d85SYehuda Sadeh __ceph_caps_file_wanted(ci)) { 645355da1ebSSage Weil ci->i_truncate_pending++; 646355da1ebSSage Weil queue_trunc = 1; 647355da1ebSSage Weil } 648355da1ebSSage Weil } 649355da1ebSSage Weil } 650355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && 651355da1ebSSage Weil ci->i_truncate_size != truncate_size) { 652355da1ebSSage Weil dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, 653355da1ebSSage Weil truncate_size); 654355da1ebSSage Weil ci->i_truncate_size = truncate_size; 655355da1ebSSage Weil } 65699ccbd22SMilosz Tanski 65799ccbd22SMilosz Tanski if (queue_trunc) 65899ccbd22SMilosz Tanski ceph_fscache_invalidate(inode); 65999ccbd22SMilosz Tanski 660355da1ebSSage Weil return queue_trunc; 661355da1ebSSage Weil } 662355da1ebSSage Weil 663355da1ebSSage Weil void ceph_fill_file_time(struct inode *inode, int issued, 664355da1ebSSage Weil u64 time_warp_seq, struct timespec *ctime, 665355da1ebSSage Weil struct timespec *mtime, struct timespec *atime) 666355da1ebSSage Weil { 667355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 668355da1ebSSage Weil int warn = 0; 669355da1ebSSage Weil 670355da1ebSSage Weil if (issued & (CEPH_CAP_FILE_EXCL| 671355da1ebSSage Weil CEPH_CAP_FILE_WR| 672d8672d64SSage Weil CEPH_CAP_FILE_BUFFER| 673d8672d64SSage Weil CEPH_CAP_AUTH_EXCL| 674d8672d64SSage Weil CEPH_CAP_XATTR_EXCL)) { 675355da1ebSSage Weil if (timespec_compare(ctime, &inode->i_ctime) > 0) { 676355da1ebSSage Weil dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n", 677355da1ebSSage Weil inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 678355da1ebSSage Weil ctime->tv_sec, ctime->tv_nsec); 679355da1ebSSage Weil inode->i_ctime = *ctime; 680355da1ebSSage Weil } 681355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { 682355da1ebSSage Weil /* the MDS did a utimes() */ 683355da1ebSSage Weil dout("mtime %ld.%09ld -> %ld.%09ld " 684355da1ebSSage Weil "tw %d -> %d\n", 685355da1ebSSage Weil inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 686355da1ebSSage Weil mtime->tv_sec, mtime->tv_nsec, 687355da1ebSSage Weil ci->i_time_warp_seq, (int)time_warp_seq); 688355da1ebSSage Weil 689355da1ebSSage Weil inode->i_mtime = *mtime; 690355da1ebSSage Weil inode->i_atime = *atime; 691355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 692355da1ebSSage Weil } else if (time_warp_seq == ci->i_time_warp_seq) { 693355da1ebSSage Weil /* nobody did utimes(); take the max */ 694355da1ebSSage Weil if (timespec_compare(mtime, &inode->i_mtime) > 0) { 695355da1ebSSage Weil dout("mtime %ld.%09ld -> %ld.%09ld inc\n", 696355da1ebSSage Weil inode->i_mtime.tv_sec, 697355da1ebSSage Weil inode->i_mtime.tv_nsec, 698355da1ebSSage Weil mtime->tv_sec, mtime->tv_nsec); 699355da1ebSSage Weil inode->i_mtime = *mtime; 700355da1ebSSage Weil } 701355da1ebSSage Weil if (timespec_compare(atime, &inode->i_atime) > 0) { 702355da1ebSSage Weil dout("atime %ld.%09ld -> %ld.%09ld inc\n", 703355da1ebSSage Weil inode->i_atime.tv_sec, 704355da1ebSSage Weil inode->i_atime.tv_nsec, 705355da1ebSSage Weil atime->tv_sec, atime->tv_nsec); 706355da1ebSSage Weil inode->i_atime = *atime; 707355da1ebSSage Weil } 708355da1ebSSage Weil } else if (issued & CEPH_CAP_FILE_EXCL) { 709355da1ebSSage Weil /* we did a utimes(); ignore mds values */ 710355da1ebSSage Weil } else { 711355da1ebSSage Weil warn = 1; 712355da1ebSSage Weil } 713355da1ebSSage Weil } else { 714d8672d64SSage Weil /* we have no write|excl caps; whatever the MDS says is true */ 715355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { 716355da1ebSSage Weil inode->i_ctime = *ctime; 717355da1ebSSage Weil inode->i_mtime = *mtime; 718355da1ebSSage Weil inode->i_atime = *atime; 719355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 720355da1ebSSage Weil } else { 721355da1ebSSage Weil warn = 1; 722355da1ebSSage Weil } 723355da1ebSSage Weil } 724355da1ebSSage Weil if (warn) /* time_warp_seq shouldn't go backwards */ 725355da1ebSSage Weil dout("%p mds time_warp_seq %llu < %u\n", 726355da1ebSSage Weil inode, time_warp_seq, ci->i_time_warp_seq); 727355da1ebSSage Weil } 728355da1ebSSage Weil 729355da1ebSSage Weil /* 730355da1ebSSage Weil * Populate an inode based on info from mds. May be called on new or 731355da1ebSSage Weil * existing inodes. 732355da1ebSSage Weil */ 73301deead0SYan, Zheng static int fill_inode(struct inode *inode, struct page *locked_page, 734355da1ebSSage Weil struct ceph_mds_reply_info_in *iinfo, 735355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo, 736355da1ebSSage Weil struct ceph_mds_session *session, 737355da1ebSSage Weil unsigned long ttl_from, int cap_fmode, 738355da1ebSSage Weil struct ceph_cap_reservation *caps_reservation) 739355da1ebSSage Weil { 740d9df2783SYan, Zheng struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; 741355da1ebSSage Weil struct ceph_mds_reply_inode *info = iinfo->in; 742355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 743f98a128aSYan, Zheng int issued = 0, implemented, new_issued; 744355da1ebSSage Weil struct timespec mtime, atime, ctime; 745355da1ebSSage Weil struct ceph_buffer *xattr_blob = NULL; 746779fe0fbSYan, Zheng struct ceph_string *pool_ns = NULL; 747d9df2783SYan, Zheng struct ceph_cap *new_cap = NULL; 748355da1ebSSage Weil int err = 0; 749d9df2783SYan, Zheng bool wake = false; 750f98a128aSYan, Zheng bool queue_trunc = false; 751f98a128aSYan, Zheng bool new_version = false; 75231c542a1SYan, Zheng bool fill_inline = false; 753355da1ebSSage Weil 754355da1ebSSage Weil dout("fill_inode %p ino %llx.%llx v %llu had %llu\n", 755355da1ebSSage Weil inode, ceph_vinop(inode), le64_to_cpu(info->version), 756355da1ebSSage Weil ci->i_version); 757355da1ebSSage Weil 758d9df2783SYan, Zheng /* prealloc new cap struct */ 759d9df2783SYan, Zheng if (info->cap.caps && ceph_snap(inode) == CEPH_NOSNAP) 760d9df2783SYan, Zheng new_cap = ceph_get_cap(mdsc, caps_reservation); 761d9df2783SYan, Zheng 762355da1ebSSage Weil /* 763355da1ebSSage Weil * prealloc xattr data, if it looks like we'll need it. only 764355da1ebSSage Weil * if len > 4 (meaning there are actually xattrs; the first 4 765355da1ebSSage Weil * bytes are the xattr count). 766355da1ebSSage Weil */ 767355da1ebSSage Weil if (iinfo->xattr_len > 4) { 768b6c1d5b8SSage Weil xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); 769355da1ebSSage Weil if (!xattr_blob) 770355da1ebSSage Weil pr_err("fill_inode ENOMEM xattr blob %d bytes\n", 771355da1ebSSage Weil iinfo->xattr_len); 772355da1ebSSage Weil } 773355da1ebSSage Weil 774779fe0fbSYan, Zheng if (iinfo->pool_ns_len > 0) 775779fe0fbSYan, Zheng pool_ns = ceph_find_or_create_string(iinfo->pool_ns_data, 776779fe0fbSYan, Zheng iinfo->pool_ns_len); 777779fe0fbSYan, Zheng 778be655596SSage Weil spin_lock(&ci->i_ceph_lock); 779355da1ebSSage Weil 780355da1ebSSage Weil /* 781355da1ebSSage Weil * provided version will be odd if inode value is projected, 7828bd59e01SSage Weil * even if stable. skip the update if we have newer stable 7838bd59e01SSage Weil * info (ours>=theirs, e.g. due to racing mds replies), unless 7848bd59e01SSage Weil * we are getting projected (unstable) info (in which case the 7858bd59e01SSage Weil * version is odd, and we want ours>theirs). 7868bd59e01SSage Weil * us them 7878bd59e01SSage Weil * 2 2 skip 7888bd59e01SSage Weil * 3 2 skip 7898bd59e01SSage Weil * 3 3 update 790355da1ebSSage Weil */ 791f98a128aSYan, Zheng if (ci->i_version == 0 || 792f98a128aSYan, Zheng ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 793f98a128aSYan, Zheng le64_to_cpu(info->version) > (ci->i_version & ~1))) 794f98a128aSYan, Zheng new_version = true; 795355da1ebSSage Weil 796355da1ebSSage Weil issued = __ceph_caps_issued(ci, &implemented); 797355da1ebSSage Weil issued |= implemented | __ceph_caps_dirty(ci); 798f98a128aSYan, Zheng new_issued = ~issued & le32_to_cpu(info->cap.caps); 799355da1ebSSage Weil 800355da1ebSSage Weil /* update inode */ 801355da1ebSSage Weil ci->i_version = le64_to_cpu(info->version); 802355da1ebSSage Weil inode->i_version++; 803355da1ebSSage Weil inode->i_rdev = le32_to_cpu(info->rdev); 804f98a128aSYan, Zheng inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; 805355da1ebSSage Weil 806f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && 807f98a128aSYan, Zheng (issued & CEPH_CAP_AUTH_EXCL) == 0) { 808355da1ebSSage Weil inode->i_mode = le32_to_cpu(info->mode); 809ab871b90SEric W. Biederman inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); 810ab871b90SEric W. Biederman inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); 811355da1ebSSage Weil dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, 812bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 813bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid)); 814355da1ebSSage Weil } 815355da1ebSSage Weil 816f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && 817f98a128aSYan, Zheng (issued & CEPH_CAP_LINK_EXCL) == 0) 818bfe86848SMiklos Szeredi set_nlink(inode, le32_to_cpu(info->nlink)); 819355da1ebSSage Weil 820f98a128aSYan, Zheng if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { 821355da1ebSSage Weil /* be careful with mtime, atime, size */ 822355da1ebSSage Weil ceph_decode_timespec(&atime, &info->atime); 823355da1ebSSage Weil ceph_decode_timespec(&mtime, &info->mtime); 824355da1ebSSage Weil ceph_decode_timespec(&ctime, &info->ctime); 825f98a128aSYan, Zheng ceph_fill_file_time(inode, issued, 826f98a128aSYan, Zheng le32_to_cpu(info->time_warp_seq), 827f98a128aSYan, Zheng &ctime, &mtime, &atime); 828f98a128aSYan, Zheng } 829f98a128aSYan, Zheng 830f98a128aSYan, Zheng if (new_version || 831f98a128aSYan, Zheng (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { 8327627151eSYan, Zheng s64 old_pool = ci->i_layout.pool_id; 833779fe0fbSYan, Zheng struct ceph_string *old_ns; 834779fe0fbSYan, Zheng 8357627151eSYan, Zheng ceph_file_layout_from_legacy(&ci->i_layout, &info->layout); 836779fe0fbSYan, Zheng old_ns = rcu_dereference_protected(ci->i_layout.pool_ns, 837779fe0fbSYan, Zheng lockdep_is_held(&ci->i_ceph_lock)); 838779fe0fbSYan, Zheng rcu_assign_pointer(ci->i_layout.pool_ns, pool_ns); 839779fe0fbSYan, Zheng 840779fe0fbSYan, Zheng if (ci->i_layout.pool_id != old_pool || pool_ns != old_ns) 8417627151eSYan, Zheng ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; 84210183a69SYan, Zheng 843779fe0fbSYan, Zheng pool_ns = old_ns; 844779fe0fbSYan, Zheng 845355da1ebSSage Weil queue_trunc = ceph_fill_file_size(inode, issued, 846355da1ebSSage Weil le32_to_cpu(info->truncate_seq), 847355da1ebSSage Weil le64_to_cpu(info->truncate_size), 848355da1ebSSage Weil le64_to_cpu(info->size)); 849f98a128aSYan, Zheng /* only update max_size on auth cap */ 850f98a128aSYan, Zheng if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 851f98a128aSYan, Zheng ci->i_max_size != le64_to_cpu(info->max_size)) { 852f98a128aSYan, Zheng dout("max_size %lld -> %llu\n", ci->i_max_size, 853f98a128aSYan, Zheng le64_to_cpu(info->max_size)); 854f98a128aSYan, Zheng ci->i_max_size = le64_to_cpu(info->max_size); 855f98a128aSYan, Zheng } 856f98a128aSYan, Zheng } 857355da1ebSSage Weil 858355da1ebSSage Weil /* xattrs */ 859355da1ebSSage Weil /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ 860508b32d8SYan, Zheng if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && 861355da1ebSSage Weil le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { 862355da1ebSSage Weil if (ci->i_xattrs.blob) 863355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 864355da1ebSSage Weil ci->i_xattrs.blob = xattr_blob; 865355da1ebSSage Weil if (xattr_blob) 866355da1ebSSage Weil memcpy(ci->i_xattrs.blob->vec.iov_base, 867355da1ebSSage Weil iinfo->xattr_data, iinfo->xattr_len); 868355da1ebSSage Weil ci->i_xattrs.version = le64_to_cpu(info->xattr_version); 8697221fe4cSGuangliang Zhao ceph_forget_all_cached_acls(inode); 870a6424e48SSage Weil xattr_blob = NULL; 871355da1ebSSage Weil } 872355da1ebSSage Weil 873355da1ebSSage Weil inode->i_mapping->a_ops = &ceph_aops; 874355da1ebSSage Weil 875355da1ebSSage Weil switch (inode->i_mode & S_IFMT) { 876355da1ebSSage Weil case S_IFIFO: 877355da1ebSSage Weil case S_IFBLK: 878355da1ebSSage Weil case S_IFCHR: 879355da1ebSSage Weil case S_IFSOCK: 880355da1ebSSage Weil init_special_inode(inode, inode->i_mode, inode->i_rdev); 881355da1ebSSage Weil inode->i_op = &ceph_file_iops; 882355da1ebSSage Weil break; 883355da1ebSSage Weil case S_IFREG: 884355da1ebSSage Weil inode->i_op = &ceph_file_iops; 885355da1ebSSage Weil inode->i_fop = &ceph_file_fops; 886355da1ebSSage Weil break; 887355da1ebSSage Weil case S_IFLNK: 888355da1ebSSage Weil inode->i_op = &ceph_symlink_iops; 889355da1ebSSage Weil if (!ci->i_symlink) { 890810339ecSXi Wang u32 symlen = iinfo->symlink_len; 891355da1ebSSage Weil char *sym; 892355da1ebSSage Weil 893be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 894355da1ebSSage Weil 895224a7542SYan, Zheng if (symlen != i_size_read(inode)) { 896224a7542SYan, Zheng pr_err("fill_inode %llx.%llx BAD symlink " 897224a7542SYan, Zheng "size %lld\n", ceph_vinop(inode), 898224a7542SYan, Zheng i_size_read(inode)); 899224a7542SYan, Zheng i_size_write(inode, symlen); 900224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(symlen); 901224a7542SYan, Zheng } 902810339ecSXi Wang 903355da1ebSSage Weil err = -ENOMEM; 904810339ecSXi Wang sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); 905355da1ebSSage Weil if (!sym) 906355da1ebSSage Weil goto out; 907355da1ebSSage Weil 908be655596SSage Weil spin_lock(&ci->i_ceph_lock); 909355da1ebSSage Weil if (!ci->i_symlink) 910355da1ebSSage Weil ci->i_symlink = sym; 911355da1ebSSage Weil else 912355da1ebSSage Weil kfree(sym); /* lost a race */ 913355da1ebSSage Weil } 914ac194dccSAl Viro inode->i_link = ci->i_symlink; 915355da1ebSSage Weil break; 916355da1ebSSage Weil case S_IFDIR: 917355da1ebSSage Weil inode->i_op = &ceph_dir_iops; 918355da1ebSSage Weil inode->i_fop = &ceph_dir_fops; 919355da1ebSSage Weil 92014303d20SSage Weil ci->i_dir_layout = iinfo->dir_layout; 92114303d20SSage Weil 922355da1ebSSage Weil ci->i_files = le64_to_cpu(info->files); 923355da1ebSSage Weil ci->i_subdirs = le64_to_cpu(info->subdirs); 924355da1ebSSage Weil ci->i_rbytes = le64_to_cpu(info->rbytes); 925355da1ebSSage Weil ci->i_rfiles = le64_to_cpu(info->rfiles); 926355da1ebSSage Weil ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); 927355da1ebSSage Weil ceph_decode_timespec(&ci->i_rctime, &info->rctime); 928355da1ebSSage Weil break; 929355da1ebSSage Weil default: 930355da1ebSSage Weil pr_err("fill_inode %llx.%llx BAD mode 0%o\n", 931355da1ebSSage Weil ceph_vinop(inode), inode->i_mode); 932355da1ebSSage Weil } 933355da1ebSSage Weil 934355da1ebSSage Weil /* were we issued a capability? */ 935355da1ebSSage Weil if (info->cap.caps) { 936355da1ebSSage Weil if (ceph_snap(inode) == CEPH_NOSNAP) { 9372f92b3d0SYan, Zheng unsigned caps = le32_to_cpu(info->cap.caps); 938355da1ebSSage Weil ceph_add_cap(inode, session, 939355da1ebSSage Weil le64_to_cpu(info->cap.cap_id), 9402f92b3d0SYan, Zheng cap_fmode, caps, 941355da1ebSSage Weil le32_to_cpu(info->cap.wanted), 942355da1ebSSage Weil le32_to_cpu(info->cap.seq), 943355da1ebSSage Weil le32_to_cpu(info->cap.mseq), 944355da1ebSSage Weil le64_to_cpu(info->cap.realm), 945d9df2783SYan, Zheng info->cap.flags, &new_cap); 9462f92b3d0SYan, Zheng 9472f92b3d0SYan, Zheng /* set dir completion flag? */ 9482f92b3d0SYan, Zheng if (S_ISDIR(inode->i_mode) && 9492f92b3d0SYan, Zheng ci->i_files == 0 && ci->i_subdirs == 0 && 9502f92b3d0SYan, Zheng (caps & CEPH_CAP_FILE_SHARED) && 9512f92b3d0SYan, Zheng (issued & CEPH_CAP_FILE_EXCL) == 0 && 9522f92b3d0SYan, Zheng !__ceph_dir_is_complete(ci)) { 9532f92b3d0SYan, Zheng dout(" marking %p complete (empty)\n", inode); 954fdd4e158SYan, Zheng i_size_write(inode, 0); 9552f92b3d0SYan, Zheng __ceph_dir_set_complete(ci, 956fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count), 957fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count)); 9582f92b3d0SYan, Zheng } 9592f92b3d0SYan, Zheng 960d9df2783SYan, Zheng wake = true; 961355da1ebSSage Weil } else { 962355da1ebSSage Weil dout(" %p got snap_caps %s\n", inode, 963355da1ebSSage Weil ceph_cap_string(le32_to_cpu(info->cap.caps))); 964355da1ebSSage Weil ci->i_snap_caps |= le32_to_cpu(info->cap.caps); 965355da1ebSSage Weil if (cap_fmode >= 0) 966355da1ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 967355da1ebSSage Weil } 96804d000ebSSage Weil } else if (cap_fmode >= 0) { 969f3ae1b97SFabian Frederick pr_warn("mds issued no caps on %llx.%llx\n", 97004d000ebSSage Weil ceph_vinop(inode)); 97104d000ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 972355da1ebSSage Weil } 97331c542a1SYan, Zheng 97431c542a1SYan, Zheng if (iinfo->inline_version > 0 && 97531c542a1SYan, Zheng iinfo->inline_version >= ci->i_inline_version) { 97631c542a1SYan, Zheng int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; 97731c542a1SYan, Zheng ci->i_inline_version = iinfo->inline_version; 97831c542a1SYan, Zheng if (ci->i_inline_version != CEPH_INLINE_NONE && 97901deead0SYan, Zheng (locked_page || 98001deead0SYan, Zheng (le32_to_cpu(info->cap.caps) & cache_caps))) 98131c542a1SYan, Zheng fill_inline = true; 98231c542a1SYan, Zheng } 98331c542a1SYan, Zheng 984355da1ebSSage Weil spin_unlock(&ci->i_ceph_lock); 985355da1ebSSage Weil 98631c542a1SYan, Zheng if (fill_inline) 98701deead0SYan, Zheng ceph_fill_inline_data(inode, locked_page, 98831c542a1SYan, Zheng iinfo->inline_data, iinfo->inline_len); 98931c542a1SYan, Zheng 990d9df2783SYan, Zheng if (wake) 991d9df2783SYan, Zheng wake_up_all(&ci->i_cap_wq); 992d9df2783SYan, Zheng 993355da1ebSSage Weil /* queue truncate if we saw i_size decrease */ 994355da1ebSSage Weil if (queue_trunc) 995355da1ebSSage Weil ceph_queue_vmtruncate(inode); 996355da1ebSSage Weil 997355da1ebSSage Weil /* populate frag tree */ 9983e7fbe9cSYan, Zheng if (S_ISDIR(inode->i_mode)) 9993e7fbe9cSYan, Zheng ceph_fill_fragtree(inode, &info->fragtree, dirinfo); 1000355da1ebSSage Weil 1001355da1ebSSage Weil /* update delegation info? */ 1002355da1ebSSage Weil if (dirinfo) 1003355da1ebSSage Weil ceph_fill_dirfrag(inode, dirinfo); 1004355da1ebSSage Weil 1005355da1ebSSage Weil err = 0; 1006355da1ebSSage Weil out: 1007d9df2783SYan, Zheng if (new_cap) 1008d9df2783SYan, Zheng ceph_put_cap(mdsc, new_cap); 1009b6c1d5b8SSage Weil if (xattr_blob) 1010355da1ebSSage Weil ceph_buffer_put(xattr_blob); 1011779fe0fbSYan, Zheng ceph_put_string(pool_ns); 1012355da1ebSSage Weil return err; 1013355da1ebSSage Weil } 1014355da1ebSSage Weil 1015355da1ebSSage Weil /* 1016355da1ebSSage Weil * caller should hold session s_mutex. 1017355da1ebSSage Weil */ 1018355da1ebSSage Weil static void update_dentry_lease(struct dentry *dentry, 1019355da1ebSSage Weil struct ceph_mds_reply_lease *lease, 1020355da1ebSSage Weil struct ceph_mds_session *session, 1021355da1ebSSage Weil unsigned long from_time) 1022355da1ebSSage Weil { 1023355da1ebSSage Weil struct ceph_dentry_info *di = ceph_dentry(dentry); 1024355da1ebSSage Weil long unsigned duration = le32_to_cpu(lease->duration_ms); 1025355da1ebSSage Weil long unsigned ttl = from_time + (duration * HZ) / 1000; 1026355da1ebSSage Weil long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; 1027355da1ebSSage Weil struct inode *dir; 1028355da1ebSSage Weil 1029355da1ebSSage Weil /* only track leases on regular dentries */ 1030355da1ebSSage Weil if (dentry->d_op != &ceph_dentry_ops) 1031355da1ebSSage Weil return; 1032355da1ebSSage Weil 1033355da1ebSSage Weil spin_lock(&dentry->d_lock); 10342f90b852SSage Weil dout("update_dentry_lease %p duration %lu ms ttl %lu\n", 10352f90b852SSage Weil dentry, duration, ttl); 1036355da1ebSSage Weil 1037355da1ebSSage Weil /* make lease_rdcache_gen match directory */ 10382b0143b5SDavid Howells dir = d_inode(dentry->d_parent); 1039355da1ebSSage Weil di->lease_shared_gen = ceph_inode(dir)->i_shared_gen; 1040355da1ebSSage Weil 10412f90b852SSage Weil if (duration == 0) 1042355da1ebSSage Weil goto out_unlock; 1043355da1ebSSage Weil 1044355da1ebSSage Weil if (di->lease_gen == session->s_cap_gen && 10459b16f03cSMiklos Szeredi time_before(ttl, di->time)) 1046355da1ebSSage Weil goto out_unlock; /* we already have a newer lease. */ 1047355da1ebSSage Weil 1048355da1ebSSage Weil if (di->lease_session && di->lease_session != session) 1049355da1ebSSage Weil goto out_unlock; 1050355da1ebSSage Weil 1051355da1ebSSage Weil ceph_dentry_lru_touch(dentry); 1052355da1ebSSage Weil 1053355da1ebSSage Weil if (!di->lease_session) 1054355da1ebSSage Weil di->lease_session = ceph_get_mds_session(session); 1055355da1ebSSage Weil di->lease_gen = session->s_cap_gen; 1056355da1ebSSage Weil di->lease_seq = le32_to_cpu(lease->seq); 1057355da1ebSSage Weil di->lease_renew_after = half_ttl; 1058355da1ebSSage Weil di->lease_renew_from = 0; 10599b16f03cSMiklos Szeredi di->time = ttl; 1060355da1ebSSage Weil out_unlock: 1061355da1ebSSage Weil spin_unlock(&dentry->d_lock); 1062355da1ebSSage Weil return; 1063355da1ebSSage Weil } 1064355da1ebSSage Weil 1065355da1ebSSage Weil /* 10661cd3935bSSage Weil * splice a dentry to an inode. 10671cd3935bSSage Weil * caller must hold directory i_mutex for this to be safe. 10681cd3935bSSage Weil */ 1069f7380af0SAl Viro static struct dentry *splice_dentry(struct dentry *dn, struct inode *in) 10701cd3935bSSage Weil { 10711cd3935bSSage Weil struct dentry *realdn; 10721cd3935bSSage Weil 10732b0143b5SDavid Howells BUG_ON(d_inode(dn)); 10741cd3935bSSage Weil 10751cd3935bSSage Weil /* dn must be unhashed */ 10761cd3935bSSage Weil if (!d_unhashed(dn)) 10771cd3935bSSage Weil d_drop(dn); 107841d28bcaSAl Viro realdn = d_splice_alias(in, dn); 10791cd3935bSSage Weil if (IS_ERR(realdn)) { 1080d69ed05aSSage Weil pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", 1081d69ed05aSSage Weil PTR_ERR(realdn), dn, in, ceph_vinop(in)); 10821cd3935bSSage Weil dn = realdn; /* note realdn contains the error */ 10831cd3935bSSage Weil goto out; 10841cd3935bSSage Weil } else if (realdn) { 10851cd3935bSSage Weil dout("dn %p (%d) spliced with %p (%d) " 10861cd3935bSSage Weil "inode %p ino %llx.%llx\n", 108784d08fa8SAl Viro dn, d_count(dn), 108884d08fa8SAl Viro realdn, d_count(realdn), 10892b0143b5SDavid Howells d_inode(realdn), ceph_vinop(d_inode(realdn))); 10901cd3935bSSage Weil dput(dn); 10911cd3935bSSage Weil dn = realdn; 10921cd3935bSSage Weil } else { 10931cd3935bSSage Weil BUG_ON(!ceph_dentry(dn)); 10941cd3935bSSage Weil dout("dn %p attached to %p ino %llx.%llx\n", 10952b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn))); 10961cd3935bSSage Weil } 10971cd3935bSSage Weil out: 10981cd3935bSSage Weil return dn; 10991cd3935bSSage Weil } 11001cd3935bSSage Weil 11011cd3935bSSage Weil /* 1102355da1ebSSage Weil * Incorporate results into the local cache. This is either just 1103355da1ebSSage Weil * one inode, or a directory, dentry, and possibly linked-to inode (e.g., 1104355da1ebSSage Weil * after a lookup). 1105355da1ebSSage Weil * 1106355da1ebSSage Weil * A reply may contain 1107355da1ebSSage Weil * a directory inode along with a dentry. 1108355da1ebSSage Weil * and/or a target inode 1109355da1ebSSage Weil * 1110355da1ebSSage Weil * Called with snap_rwsem (read). 1111355da1ebSSage Weil */ 1112355da1ebSSage Weil int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, 1113355da1ebSSage Weil struct ceph_mds_session *session) 1114355da1ebSSage Weil { 1115355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1116355da1ebSSage Weil struct inode *in = NULL; 1117355da1ebSSage Weil struct ceph_vino vino; 11183d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(sb); 1119355da1ebSSage Weil int err = 0; 1120355da1ebSSage Weil 1121355da1ebSSage Weil dout("fill_trace %p is_dentry %d is_target %d\n", req, 1122355da1ebSSage Weil rinfo->head->is_dentry, rinfo->head->is_target); 1123355da1ebSSage Weil 1124355da1ebSSage Weil #if 0 1125355da1ebSSage Weil /* 1126355da1ebSSage Weil * Debugging hook: 1127355da1ebSSage Weil * 1128355da1ebSSage Weil * If we resend completed ops to a recovering mds, we get no 1129355da1ebSSage Weil * trace. Since that is very rare, pretend this is the case 1130355da1ebSSage Weil * to ensure the 'no trace' handlers in the callers behave. 1131355da1ebSSage Weil * 1132355da1ebSSage Weil * Fill in inodes unconditionally to avoid breaking cap 1133355da1ebSSage Weil * invariants. 1134355da1ebSSage Weil */ 1135355da1ebSSage Weil if (rinfo->head->op & CEPH_MDS_OP_WRITE) { 1136355da1ebSSage Weil pr_info("fill_trace faking empty trace on %lld %s\n", 1137355da1ebSSage Weil req->r_tid, ceph_mds_op_name(rinfo->head->op)); 1138355da1ebSSage Weil if (rinfo->head->is_dentry) { 1139355da1ebSSage Weil rinfo->head->is_dentry = 0; 1140355da1ebSSage Weil err = fill_inode(req->r_locked_dir, 1141355da1ebSSage Weil &rinfo->diri, rinfo->dirfrag, 1142355da1ebSSage Weil session, req->r_request_started, -1); 1143355da1ebSSage Weil } 1144355da1ebSSage Weil if (rinfo->head->is_target) { 1145355da1ebSSage Weil rinfo->head->is_target = 0; 1146355da1ebSSage Weil ininfo = rinfo->targeti.in; 1147355da1ebSSage Weil vino.ino = le64_to_cpu(ininfo->ino); 1148355da1ebSSage Weil vino.snap = le64_to_cpu(ininfo->snapid); 1149355da1ebSSage Weil in = ceph_get_inode(sb, vino); 1150355da1ebSSage Weil err = fill_inode(in, &rinfo->targeti, NULL, 1151355da1ebSSage Weil session, req->r_request_started, 1152355da1ebSSage Weil req->r_fmode); 1153355da1ebSSage Weil iput(in); 1154355da1ebSSage Weil } 1155355da1ebSSage Weil } 1156355da1ebSSage Weil #endif 1157355da1ebSSage Weil 1158355da1ebSSage Weil if (!rinfo->head->is_target && !rinfo->head->is_dentry) { 1159355da1ebSSage Weil dout("fill_trace reply is empty!\n"); 1160167c9e35SSage Weil if (rinfo->head->result == 0 && req->r_locked_dir) 1161167c9e35SSage Weil ceph_invalidate_dir_request(req); 1162355da1ebSSage Weil return 0; 1163355da1ebSSage Weil } 1164355da1ebSSage Weil 1165355da1ebSSage Weil if (rinfo->head->is_dentry) { 11665b1daecdSSage Weil struct inode *dir = req->r_locked_dir; 11675b1daecdSSage Weil 11686c5e50faSSage Weil if (dir) { 116901deead0SYan, Zheng err = fill_inode(dir, NULL, 117001deead0SYan, Zheng &rinfo->diri, rinfo->dirfrag, 11715b1daecdSSage Weil session, req->r_request_started, -1, 11725b1daecdSSage Weil &req->r_caps_reservation); 11735b1daecdSSage Weil if (err < 0) 117419913b4eSYan, Zheng goto done; 11756c5e50faSSage Weil } else { 11766c5e50faSSage Weil WARN_ON_ONCE(1); 11776c5e50faSSage Weil } 117819913b4eSYan, Zheng 117919913b4eSYan, Zheng if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) { 118019913b4eSYan, Zheng struct qstr dname; 118119913b4eSYan, Zheng struct dentry *dn, *parent; 118219913b4eSYan, Zheng 118319913b4eSYan, Zheng BUG_ON(!rinfo->head->is_target); 118419913b4eSYan, Zheng BUG_ON(req->r_dentry); 118519913b4eSYan, Zheng 118619913b4eSYan, Zheng parent = d_find_any_alias(dir); 118719913b4eSYan, Zheng BUG_ON(!parent); 118819913b4eSYan, Zheng 118919913b4eSYan, Zheng dname.name = rinfo->dname; 119019913b4eSYan, Zheng dname.len = rinfo->dname_len; 119119913b4eSYan, Zheng dname.hash = full_name_hash(dname.name, dname.len); 119219913b4eSYan, Zheng vino.ino = le64_to_cpu(rinfo->targeti.in->ino); 119319913b4eSYan, Zheng vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 119419913b4eSYan, Zheng retry_lookup: 119519913b4eSYan, Zheng dn = d_lookup(parent, &dname); 119619913b4eSYan, Zheng dout("d_lookup on parent=%p name=%.*s got %p\n", 119719913b4eSYan, Zheng parent, dname.len, dname.name, dn); 119819913b4eSYan, Zheng 119919913b4eSYan, Zheng if (!dn) { 120019913b4eSYan, Zheng dn = d_alloc(parent, &dname); 120119913b4eSYan, Zheng dout("d_alloc %p '%.*s' = %p\n", parent, 120219913b4eSYan, Zheng dname.len, dname.name, dn); 120319913b4eSYan, Zheng if (dn == NULL) { 120419913b4eSYan, Zheng dput(parent); 120519913b4eSYan, Zheng err = -ENOMEM; 120619913b4eSYan, Zheng goto done; 120719913b4eSYan, Zheng } 120819913b4eSYan, Zheng err = ceph_init_dentry(dn); 120919913b4eSYan, Zheng if (err < 0) { 121019913b4eSYan, Zheng dput(dn); 121119913b4eSYan, Zheng dput(parent); 121219913b4eSYan, Zheng goto done; 121319913b4eSYan, Zheng } 12142b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 12152b0143b5SDavid Howells (ceph_ino(d_inode(dn)) != vino.ino || 12162b0143b5SDavid Howells ceph_snap(d_inode(dn)) != vino.snap)) { 121719913b4eSYan, Zheng dout(" dn %p points to wrong inode %p\n", 12182b0143b5SDavid Howells dn, d_inode(dn)); 121919913b4eSYan, Zheng d_delete(dn); 122019913b4eSYan, Zheng dput(dn); 122119913b4eSYan, Zheng goto retry_lookup; 122219913b4eSYan, Zheng } 122319913b4eSYan, Zheng 122419913b4eSYan, Zheng req->r_dentry = dn; 122519913b4eSYan, Zheng dput(parent); 122619913b4eSYan, Zheng } 12275b1daecdSSage Weil } 12285b1daecdSSage Weil 122986b58d13SYan, Zheng if (rinfo->head->is_target) { 123086b58d13SYan, Zheng vino.ino = le64_to_cpu(rinfo->targeti.in->ino); 123186b58d13SYan, Zheng vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 123286b58d13SYan, Zheng 123386b58d13SYan, Zheng in = ceph_get_inode(sb, vino); 123486b58d13SYan, Zheng if (IS_ERR(in)) { 123586b58d13SYan, Zheng err = PTR_ERR(in); 123686b58d13SYan, Zheng goto done; 123786b58d13SYan, Zheng } 123886b58d13SYan, Zheng req->r_target_inode = in; 123986b58d13SYan, Zheng 124001deead0SYan, Zheng err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL, 124186b58d13SYan, Zheng session, req->r_request_started, 124248193012SYan, Zheng (!req->r_aborted && rinfo->head->result == 0) ? 124386b58d13SYan, Zheng req->r_fmode : -1, 124486b58d13SYan, Zheng &req->r_caps_reservation); 124586b58d13SYan, Zheng if (err < 0) { 124686b58d13SYan, Zheng pr_err("fill_inode badness %p %llx.%llx\n", 124786b58d13SYan, Zheng in, ceph_vinop(in)); 124886b58d13SYan, Zheng goto done; 124986b58d13SYan, Zheng } 125086b58d13SYan, Zheng } 125186b58d13SYan, Zheng 12529358c6d4SSage Weil /* 12539358c6d4SSage Weil * ignore null lease/binding on snapdir ENOENT, or else we 12549358c6d4SSage Weil * will have trouble splicing in the virtual snapdir later 12559358c6d4SSage Weil */ 12569358c6d4SSage Weil if (rinfo->head->is_dentry && !req->r_aborted && 12576c5e50faSSage Weil req->r_locked_dir && 12589358c6d4SSage Weil (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, 12593d14c5d2SYehuda Sadeh fsc->mount_options->snapdir_name, 12609358c6d4SSage Weil req->r_dentry->d_name.len))) { 1261355da1ebSSage Weil /* 1262355da1ebSSage Weil * lookup link rename : null -> possibly existing inode 1263355da1ebSSage Weil * mknod symlink mkdir : null -> new inode 1264355da1ebSSage Weil * unlink : linked -> null 1265355da1ebSSage Weil */ 1266355da1ebSSage Weil struct inode *dir = req->r_locked_dir; 1267355da1ebSSage Weil struct dentry *dn = req->r_dentry; 1268355da1ebSSage Weil bool have_dir_cap, have_lease; 1269355da1ebSSage Weil 1270355da1ebSSage Weil BUG_ON(!dn); 1271355da1ebSSage Weil BUG_ON(!dir); 12722b0143b5SDavid Howells BUG_ON(d_inode(dn->d_parent) != dir); 1273355da1ebSSage Weil BUG_ON(ceph_ino(dir) != 1274355da1ebSSage Weil le64_to_cpu(rinfo->diri.in->ino)); 1275355da1ebSSage Weil BUG_ON(ceph_snap(dir) != 1276355da1ebSSage Weil le64_to_cpu(rinfo->diri.in->snapid)); 1277355da1ebSSage Weil 1278355da1ebSSage Weil /* do we have a lease on the whole dir? */ 1279355da1ebSSage Weil have_dir_cap = 1280355da1ebSSage Weil (le32_to_cpu(rinfo->diri.in->cap.caps) & 1281355da1ebSSage Weil CEPH_CAP_FILE_SHARED); 1282355da1ebSSage Weil 1283355da1ebSSage Weil /* do we have a dn lease? */ 1284355da1ebSSage Weil have_lease = have_dir_cap || 12852f90b852SSage Weil le32_to_cpu(rinfo->dlease->duration_ms); 1286355da1ebSSage Weil if (!have_lease) 1287355da1ebSSage Weil dout("fill_trace no dentry lease or dir cap\n"); 1288355da1ebSSage Weil 1289355da1ebSSage Weil /* rename? */ 1290355da1ebSSage Weil if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { 12910a8a70f9SYan, Zheng struct inode *olddir = req->r_old_dentry_dir; 12920a8a70f9SYan, Zheng BUG_ON(!olddir); 12930a8a70f9SYan, Zheng 1294a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1295355da1ebSSage Weil req->r_old_dentry, 1296a455589fSAl Viro req->r_old_dentry, 1297a455589fSAl Viro dn, dn); 1298355da1ebSSage Weil dout("fill_trace doing d_move %p -> %p\n", 1299355da1ebSSage Weil req->r_old_dentry, dn); 1300c10f5e12SSage Weil 1301fdd4e158SYan, Zheng /* d_move screws up sibling dentries' offsets */ 1302fdd4e158SYan, Zheng ceph_dir_clear_ordered(dir); 1303fdd4e158SYan, Zheng ceph_dir_clear_ordered(olddir); 1304fdd4e158SYan, Zheng 1305355da1ebSSage Weil d_move(req->r_old_dentry, dn); 1306a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1307355da1ebSSage Weil req->r_old_dentry, 1308a455589fSAl Viro req->r_old_dentry, 1309a455589fSAl Viro dn, dn); 131081a6cf2dSSage Weil 1311c4a29f26SSage Weil /* ensure target dentry is invalidated, despite 1312c4a29f26SSage Weil rehashing bug in vfs_rename_dir */ 131381a6cf2dSSage Weil ceph_invalidate_dentry_lease(dn); 131481a6cf2dSSage Weil 131509adc80cSSage Weil dout("dn %p gets new offset %lld\n", req->r_old_dentry, 13161cd3935bSSage Weil ceph_dentry(req->r_old_dentry)->offset); 131781a6cf2dSSage Weil 1318355da1ebSSage Weil dn = req->r_old_dentry; /* use old_dentry */ 1319355da1ebSSage Weil } 1320355da1ebSSage Weil 1321355da1ebSSage Weil /* null dentry? */ 1322355da1ebSSage Weil if (!rinfo->head->is_target) { 1323355da1ebSSage Weil dout("fill_trace null dentry\n"); 13242b0143b5SDavid Howells if (d_really_is_positive(dn)) { 132570db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 1326355da1ebSSage Weil dout("d_delete %p\n", dn); 1327355da1ebSSage Weil d_delete(dn); 1328355da1ebSSage Weil } else { 1329355da1ebSSage Weil if (have_lease && d_unhashed(dn)) 1330f8b31710SAl Viro d_add(dn, NULL); 1331355da1ebSSage Weil update_dentry_lease(dn, rinfo->dlease, 1332355da1ebSSage Weil session, 1333355da1ebSSage Weil req->r_request_started); 1334355da1ebSSage Weil } 1335355da1ebSSage Weil goto done; 1336355da1ebSSage Weil } 1337355da1ebSSage Weil 1338355da1ebSSage Weil /* attach proper inode */ 13392b0143b5SDavid Howells if (d_really_is_negative(dn)) { 134070db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 134186b58d13SYan, Zheng ihold(in); 1342f7380af0SAl Viro dn = splice_dentry(dn, in); 1343355da1ebSSage Weil if (IS_ERR(dn)) { 1344355da1ebSSage Weil err = PTR_ERR(dn); 1345355da1ebSSage Weil goto done; 1346355da1ebSSage Weil } 1347355da1ebSSage Weil req->r_dentry = dn; /* may have spliced */ 13482b0143b5SDavid Howells } else if (d_really_is_positive(dn) && d_inode(dn) != in) { 1349355da1ebSSage Weil dout(" %p links to %p %llx.%llx, not %llx.%llx\n", 13502b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn)), 135186b58d13SYan, Zheng ceph_vinop(in)); 1352200fd27cSYan, Zheng d_invalidate(dn); 1353355da1ebSSage Weil have_lease = false; 1354355da1ebSSage Weil } 1355355da1ebSSage Weil 1356355da1ebSSage Weil if (have_lease) 1357355da1ebSSage Weil update_dentry_lease(dn, rinfo->dlease, session, 1358355da1ebSSage Weil req->r_request_started); 1359355da1ebSSage Weil dout(" final dn %p\n", dn); 136086b58d13SYan, Zheng } else if (!req->r_aborted && 136186b58d13SYan, Zheng (req->r_op == CEPH_MDS_OP_LOOKUPSNAP || 136286b58d13SYan, Zheng req->r_op == CEPH_MDS_OP_MKSNAP)) { 1363355da1ebSSage Weil struct dentry *dn = req->r_dentry; 13640a8a70f9SYan, Zheng struct inode *dir = req->r_locked_dir; 1365355da1ebSSage Weil 1366355da1ebSSage Weil /* fill out a snapdir LOOKUPSNAP dentry */ 1367355da1ebSSage Weil BUG_ON(!dn); 13680a8a70f9SYan, Zheng BUG_ON(!dir); 13690a8a70f9SYan, Zheng BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); 1370355da1ebSSage Weil dout(" linking snapped dir %p to dn %p\n", in, dn); 137170db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 137286b58d13SYan, Zheng ihold(in); 1373f7380af0SAl Viro dn = splice_dentry(dn, in); 1374355da1ebSSage Weil if (IS_ERR(dn)) { 1375355da1ebSSage Weil err = PTR_ERR(dn); 1376355da1ebSSage Weil goto done; 1377355da1ebSSage Weil } 1378355da1ebSSage Weil req->r_dentry = dn; /* may have spliced */ 1379355da1ebSSage Weil } 1380355da1ebSSage Weil done: 1381355da1ebSSage Weil dout("fill_trace done err=%d\n", err); 1382355da1ebSSage Weil return err; 1383355da1ebSSage Weil } 1384355da1ebSSage Weil 1385355da1ebSSage Weil /* 1386355da1ebSSage Weil * Prepopulate our cache with readdir results, leases, etc. 1387355da1ebSSage Weil */ 138879f9f99aSSage Weil static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, 138979f9f99aSSage Weil struct ceph_mds_session *session) 139079f9f99aSSage Weil { 139179f9f99aSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 139279f9f99aSSage Weil int i, err = 0; 139379f9f99aSSage Weil 139479f9f99aSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 13952a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 139679f9f99aSSage Weil struct ceph_vino vino; 139779f9f99aSSage Weil struct inode *in; 139879f9f99aSSage Weil int rc; 139979f9f99aSSage Weil 14002a5beea3SYan, Zheng vino.ino = le64_to_cpu(rde->inode.in->ino); 14012a5beea3SYan, Zheng vino.snap = le64_to_cpu(rde->inode.in->snapid); 140279f9f99aSSage Weil 140379f9f99aSSage Weil in = ceph_get_inode(req->r_dentry->d_sb, vino); 140479f9f99aSSage Weil if (IS_ERR(in)) { 140579f9f99aSSage Weil err = PTR_ERR(in); 140679f9f99aSSage Weil dout("new_inode badness got %d\n", err); 140779f9f99aSSage Weil continue; 140879f9f99aSSage Weil } 14092a5beea3SYan, Zheng rc = fill_inode(in, NULL, &rde->inode, NULL, session, 141079f9f99aSSage Weil req->r_request_started, -1, 141179f9f99aSSage Weil &req->r_caps_reservation); 141279f9f99aSSage Weil if (rc < 0) { 141379f9f99aSSage Weil pr_err("fill_inode badness on %p got %d\n", in, rc); 141479f9f99aSSage Weil err = rc; 141579f9f99aSSage Weil } 1416209ae762SYan, Zheng iput(in); 141779f9f99aSSage Weil } 141879f9f99aSSage Weil 141979f9f99aSSage Weil return err; 142079f9f99aSSage Weil } 142179f9f99aSSage Weil 1422fdd4e158SYan, Zheng void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) 1423fdd4e158SYan, Zheng { 1424fdd4e158SYan, Zheng if (ctl->page) { 1425fdd4e158SYan, Zheng kunmap(ctl->page); 142609cbfeafSKirill A. Shutemov put_page(ctl->page); 1427fdd4e158SYan, Zheng ctl->page = NULL; 1428fdd4e158SYan, Zheng } 1429fdd4e158SYan, Zheng } 1430fdd4e158SYan, Zheng 1431fdd4e158SYan, Zheng static int fill_readdir_cache(struct inode *dir, struct dentry *dn, 1432fdd4e158SYan, Zheng struct ceph_readdir_cache_control *ctl, 1433fdd4e158SYan, Zheng struct ceph_mds_request *req) 1434fdd4e158SYan, Zheng { 1435fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(dir); 143609cbfeafSKirill A. Shutemov unsigned nsize = PAGE_SIZE / sizeof(struct dentry*); 1437fdd4e158SYan, Zheng unsigned idx = ctl->index % nsize; 1438fdd4e158SYan, Zheng pgoff_t pgoff = ctl->index / nsize; 1439fdd4e158SYan, Zheng 1440fdd4e158SYan, Zheng if (!ctl->page || pgoff != page_index(ctl->page)) { 1441fdd4e158SYan, Zheng ceph_readdir_cache_release(ctl); 1442af5e5eb5SYan, Zheng if (idx == 0) 1443fdd4e158SYan, Zheng ctl->page = grab_cache_page(&dir->i_data, pgoff); 1444af5e5eb5SYan, Zheng else 1445af5e5eb5SYan, Zheng ctl->page = find_lock_page(&dir->i_data, pgoff); 1446fdd4e158SYan, Zheng if (!ctl->page) { 1447fdd4e158SYan, Zheng ctl->index = -1; 1448af5e5eb5SYan, Zheng return idx == 0 ? -ENOMEM : 0; 1449fdd4e158SYan, Zheng } 1450fdd4e158SYan, Zheng /* reading/filling the cache are serialized by 1451fdd4e158SYan, Zheng * i_mutex, no need to use page lock */ 1452fdd4e158SYan, Zheng unlock_page(ctl->page); 1453fdd4e158SYan, Zheng ctl->dentries = kmap(ctl->page); 1454af5e5eb5SYan, Zheng if (idx == 0) 145509cbfeafSKirill A. Shutemov memset(ctl->dentries, 0, PAGE_SIZE); 1456fdd4e158SYan, Zheng } 1457fdd4e158SYan, Zheng 1458fdd4e158SYan, Zheng if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && 1459fdd4e158SYan, Zheng req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { 1460fdd4e158SYan, Zheng dout("readdir cache dn %p idx %d\n", dn, ctl->index); 1461fdd4e158SYan, Zheng ctl->dentries[idx] = dn; 1462fdd4e158SYan, Zheng ctl->index++; 1463fdd4e158SYan, Zheng } else { 1464fdd4e158SYan, Zheng dout("disable readdir cache\n"); 1465fdd4e158SYan, Zheng ctl->index = -1; 1466fdd4e158SYan, Zheng } 1467fdd4e158SYan, Zheng return 0; 1468fdd4e158SYan, Zheng } 1469fdd4e158SYan, Zheng 1470355da1ebSSage Weil int ceph_readdir_prepopulate(struct ceph_mds_request *req, 1471355da1ebSSage Weil struct ceph_mds_session *session) 1472355da1ebSSage Weil { 1473355da1ebSSage Weil struct dentry *parent = req->r_dentry; 1474f3c4ebe6SYan, Zheng struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); 1475355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1476355da1ebSSage Weil struct qstr dname; 1477355da1ebSSage Weil struct dentry *dn; 1478355da1ebSSage Weil struct inode *in; 1479315f2408SYan, Zheng int err = 0, skipped = 0, ret, i; 1480355da1ebSSage Weil struct inode *snapdir = NULL; 1481355da1ebSSage Weil struct ceph_mds_request_head *rhead = req->r_request->front.iov_base; 148281c6aea5SYan, Zheng u32 frag = le32_to_cpu(rhead->args.readdir.frag); 1483f3c4ebe6SYan, Zheng u32 last_hash = 0; 1484f3c4ebe6SYan, Zheng u32 fpos_offset; 1485fdd4e158SYan, Zheng struct ceph_readdir_cache_control cache_ctl = {}; 1486fdd4e158SYan, Zheng 1487fdd4e158SYan, Zheng if (req->r_aborted) 1488fdd4e158SYan, Zheng return readdir_prepopulate_inodes_only(req, session); 148981c6aea5SYan, Zheng 1490f3c4ebe6SYan, Zheng if (rinfo->hash_order && req->r_path2) { 1491f3c4ebe6SYan, Zheng last_hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 1492f3c4ebe6SYan, Zheng req->r_path2, strlen(req->r_path2)); 1493f3c4ebe6SYan, Zheng last_hash = ceph_frag_value(last_hash); 1494f3c4ebe6SYan, Zheng } 1495f3c4ebe6SYan, Zheng 149681c6aea5SYan, Zheng if (rinfo->dir_dir && 149781c6aea5SYan, Zheng le32_to_cpu(rinfo->dir_dir->frag) != frag) { 149881c6aea5SYan, Zheng dout("readdir_prepopulate got new frag %x -> %x\n", 149981c6aea5SYan, Zheng frag, le32_to_cpu(rinfo->dir_dir->frag)); 150081c6aea5SYan, Zheng frag = le32_to_cpu(rinfo->dir_dir->frag); 1501f3c4ebe6SYan, Zheng if (!rinfo->hash_order) 1502fdd4e158SYan, Zheng req->r_readdir_offset = 2; 150381c6aea5SYan, Zheng } 1504355da1ebSSage Weil 1505355da1ebSSage Weil if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { 15062b0143b5SDavid Howells snapdir = ceph_get_snapdir(d_inode(parent)); 1507355da1ebSSage Weil parent = d_find_alias(snapdir); 1508355da1ebSSage Weil dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", 1509355da1ebSSage Weil rinfo->dir_nr, parent); 1510355da1ebSSage Weil } else { 1511355da1ebSSage Weil dout("readdir_prepopulate %d items under dn %p\n", 1512355da1ebSSage Weil rinfo->dir_nr, parent); 1513355da1ebSSage Weil if (rinfo->dir_dir) 15142b0143b5SDavid Howells ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); 1515355da1ebSSage Weil } 1516355da1ebSSage Weil 1517fdd4e158SYan, Zheng if (ceph_frag_is_leftmost(frag) && req->r_readdir_offset == 2) { 1518fdd4e158SYan, Zheng /* note dir version at start of readdir so we can tell 1519fdd4e158SYan, Zheng * if any dentries get dropped */ 1520fdd4e158SYan, Zheng req->r_dir_release_cnt = atomic64_read(&ci->i_release_count); 1521fdd4e158SYan, Zheng req->r_dir_ordered_cnt = atomic64_read(&ci->i_ordered_count); 1522fdd4e158SYan, Zheng req->r_readdir_cache_idx = 0; 1523fdd4e158SYan, Zheng } 1524fdd4e158SYan, Zheng 1525fdd4e158SYan, Zheng cache_ctl.index = req->r_readdir_cache_idx; 1526f3c4ebe6SYan, Zheng fpos_offset = req->r_readdir_offset; 1527fdd4e158SYan, Zheng 152886b58d13SYan, Zheng /* FIXME: release caps/leases if error occurs */ 1529355da1ebSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 15302a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 1531355da1ebSSage Weil struct ceph_vino vino; 1532355da1ebSSage Weil 15332a5beea3SYan, Zheng dname.name = rde->name; 15342a5beea3SYan, Zheng dname.len = rde->name_len; 1535355da1ebSSage Weil dname.hash = full_name_hash(dname.name, dname.len); 1536355da1ebSSage Weil 15372a5beea3SYan, Zheng vino.ino = le64_to_cpu(rde->inode.in->ino); 15382a5beea3SYan, Zheng vino.snap = le64_to_cpu(rde->inode.in->snapid); 1539355da1ebSSage Weil 1540f3c4ebe6SYan, Zheng if (rinfo->hash_order) { 1541f3c4ebe6SYan, Zheng u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 1542f3c4ebe6SYan, Zheng rde->name, rde->name_len); 1543f3c4ebe6SYan, Zheng hash = ceph_frag_value(hash); 1544f3c4ebe6SYan, Zheng if (hash != last_hash) 1545f3c4ebe6SYan, Zheng fpos_offset = 2; 1546f3c4ebe6SYan, Zheng last_hash = hash; 1547f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(hash, fpos_offset++, true); 1548f3c4ebe6SYan, Zheng } else { 1549f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(frag, fpos_offset++, false); 1550f3c4ebe6SYan, Zheng } 1551355da1ebSSage Weil 1552355da1ebSSage Weil retry_lookup: 1553355da1ebSSage Weil dn = d_lookup(parent, &dname); 1554355da1ebSSage Weil dout("d_lookup on parent=%p name=%.*s got %p\n", 1555355da1ebSSage Weil parent, dname.len, dname.name, dn); 1556355da1ebSSage Weil 1557355da1ebSSage Weil if (!dn) { 1558355da1ebSSage Weil dn = d_alloc(parent, &dname); 1559355da1ebSSage Weil dout("d_alloc %p '%.*s' = %p\n", parent, 1560355da1ebSSage Weil dname.len, dname.name, dn); 1561355da1ebSSage Weil if (dn == NULL) { 1562355da1ebSSage Weil dout("d_alloc badness\n"); 1563355da1ebSSage Weil err = -ENOMEM; 1564355da1ebSSage Weil goto out; 1565355da1ebSSage Weil } 156686b58d13SYan, Zheng ret = ceph_init_dentry(dn); 156786b58d13SYan, Zheng if (ret < 0) { 15688c696737SSage Weil dput(dn); 156986b58d13SYan, Zheng err = ret; 1570355da1ebSSage Weil goto out; 15718c696737SSage Weil } 15722b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 15732b0143b5SDavid Howells (ceph_ino(d_inode(dn)) != vino.ino || 15742b0143b5SDavid Howells ceph_snap(d_inode(dn)) != vino.snap)) { 1575355da1ebSSage Weil dout(" dn %p points to wrong inode %p\n", 15762b0143b5SDavid Howells dn, d_inode(dn)); 1577355da1ebSSage Weil d_delete(dn); 1578355da1ebSSage Weil dput(dn); 1579355da1ebSSage Weil goto retry_lookup; 1580355da1ebSSage Weil } 1581355da1ebSSage Weil 1582355da1ebSSage Weil /* inode */ 15832b0143b5SDavid Howells if (d_really_is_positive(dn)) { 15842b0143b5SDavid Howells in = d_inode(dn); 1585355da1ebSSage Weil } else { 1586355da1ebSSage Weil in = ceph_get_inode(parent->d_sb, vino); 1587ac1f12efSDan Carpenter if (IS_ERR(in)) { 1588355da1ebSSage Weil dout("new_inode badness\n"); 15892744c171SAl Viro d_drop(dn); 1590355da1ebSSage Weil dput(dn); 1591ac1f12efSDan Carpenter err = PTR_ERR(in); 1592355da1ebSSage Weil goto out; 1593355da1ebSSage Weil } 1594355da1ebSSage Weil } 1595355da1ebSSage Weil 15962a5beea3SYan, Zheng ret = fill_inode(in, NULL, &rde->inode, NULL, session, 1597355da1ebSSage Weil req->r_request_started, -1, 1598fdd4e158SYan, Zheng &req->r_caps_reservation); 1599fdd4e158SYan, Zheng if (ret < 0) { 1600355da1ebSSage Weil pr_err("fill_inode badness on %p\n", in); 16012b0143b5SDavid Howells if (d_really_is_negative(dn)) 160286b58d13SYan, Zheng iput(in); 160386b58d13SYan, Zheng d_drop(dn); 1604fdd4e158SYan, Zheng err = ret; 1605d69ed05aSSage Weil goto next_item; 1606355da1ebSSage Weil } 160786b58d13SYan, Zheng 16082b0143b5SDavid Howells if (d_really_is_negative(dn)) { 1609315f2408SYan, Zheng struct dentry *realdn; 1610315f2408SYan, Zheng 1611315f2408SYan, Zheng if (ceph_security_xattr_deadlock(in)) { 1612315f2408SYan, Zheng dout(" skip splicing dn %p to inode %p" 1613315f2408SYan, Zheng " (security xattr deadlock)\n", dn, in); 1614315f2408SYan, Zheng iput(in); 1615315f2408SYan, Zheng skipped++; 1616315f2408SYan, Zheng goto next_item; 1617315f2408SYan, Zheng } 1618315f2408SYan, Zheng 1619315f2408SYan, Zheng realdn = splice_dentry(dn, in); 16205cba372cSYan, Zheng if (IS_ERR(realdn)) { 16215cba372cSYan, Zheng err = PTR_ERR(realdn); 16225cba372cSYan, Zheng d_drop(dn); 162386b58d13SYan, Zheng dn = NULL; 162486b58d13SYan, Zheng goto next_item; 162586b58d13SYan, Zheng } 16265cba372cSYan, Zheng dn = realdn; 162786b58d13SYan, Zheng } 162886b58d13SYan, Zheng 1629f3c4ebe6SYan, Zheng ceph_dentry(dn)->offset = rde->offset; 163086b58d13SYan, Zheng 16312a5beea3SYan, Zheng update_dentry_lease(dn, rde->lease, req->r_session, 1632d69ed05aSSage Weil req->r_request_started); 1633fdd4e158SYan, Zheng 1634315f2408SYan, Zheng if (err == 0 && skipped == 0 && cache_ctl.index >= 0) { 1635fdd4e158SYan, Zheng ret = fill_readdir_cache(d_inode(parent), dn, 1636fdd4e158SYan, Zheng &cache_ctl, req); 1637fdd4e158SYan, Zheng if (ret < 0) 1638fdd4e158SYan, Zheng err = ret; 1639fdd4e158SYan, Zheng } 1640d69ed05aSSage Weil next_item: 1641d69ed05aSSage Weil if (dn) 1642355da1ebSSage Weil dput(dn); 1643355da1ebSSage Weil } 1644355da1ebSSage Weil out: 1645315f2408SYan, Zheng if (err == 0 && skipped == 0) { 1646fdd4e158SYan, Zheng req->r_did_prepopulate = true; 1647fdd4e158SYan, Zheng req->r_readdir_cache_idx = cache_ctl.index; 1648fdd4e158SYan, Zheng } 1649fdd4e158SYan, Zheng ceph_readdir_cache_release(&cache_ctl); 1650355da1ebSSage Weil if (snapdir) { 1651355da1ebSSage Weil iput(snapdir); 1652355da1ebSSage Weil dput(parent); 1653355da1ebSSage Weil } 1654355da1ebSSage Weil dout("readdir_prepopulate done\n"); 1655355da1ebSSage Weil return err; 1656355da1ebSSage Weil } 1657355da1ebSSage Weil 1658355da1ebSSage Weil int ceph_inode_set_size(struct inode *inode, loff_t size) 1659355da1ebSSage Weil { 1660355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1661355da1ebSSage Weil int ret = 0; 1662355da1ebSSage Weil 1663be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1664355da1ebSSage Weil dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); 166599c88e69SYan, Zheng i_size_write(inode, size); 1666224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 1667355da1ebSSage Weil 1668355da1ebSSage Weil /* tell the MDS if we are approaching max_size */ 1669355da1ebSSage Weil if ((size << 1) >= ci->i_max_size && 1670355da1ebSSage Weil (ci->i_reported_size << 1) < ci->i_max_size) 1671355da1ebSSage Weil ret = 1; 1672355da1ebSSage Weil 1673be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1674355da1ebSSage Weil return ret; 1675355da1ebSSage Weil } 1676355da1ebSSage Weil 1677355da1ebSSage Weil /* 1678355da1ebSSage Weil * Write back inode data in a worker thread. (This can't be done 1679355da1ebSSage Weil * in the message handler context.) 1680355da1ebSSage Weil */ 16813c6f6b79SSage Weil void ceph_queue_writeback(struct inode *inode) 16823c6f6b79SSage Weil { 168315a2015fSSage Weil ihold(inode); 16843c6f6b79SSage Weil if (queue_work(ceph_inode_to_client(inode)->wb_wq, 16853c6f6b79SSage Weil &ceph_inode(inode)->i_wb_work)) { 16862c27c9a5SSage Weil dout("ceph_queue_writeback %p\n", inode); 16873c6f6b79SSage Weil } else { 16882c27c9a5SSage Weil dout("ceph_queue_writeback %p failed\n", inode); 168915a2015fSSage Weil iput(inode); 16903c6f6b79SSage Weil } 16913c6f6b79SSage Weil } 16923c6f6b79SSage Weil 16933c6f6b79SSage Weil static void ceph_writeback_work(struct work_struct *work) 1694355da1ebSSage Weil { 1695355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1696355da1ebSSage Weil i_wb_work); 1697355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1698355da1ebSSage Weil 1699355da1ebSSage Weil dout("writeback %p\n", inode); 1700355da1ebSSage Weil filemap_fdatawrite(&inode->i_data); 1701355da1ebSSage Weil iput(inode); 1702355da1ebSSage Weil } 1703355da1ebSSage Weil 1704355da1ebSSage Weil /* 17053c6f6b79SSage Weil * queue an async invalidation 17063c6f6b79SSage Weil */ 17073c6f6b79SSage Weil void ceph_queue_invalidate(struct inode *inode) 17083c6f6b79SSage Weil { 170915a2015fSSage Weil ihold(inode); 17103c6f6b79SSage Weil if (queue_work(ceph_inode_to_client(inode)->pg_inv_wq, 17113c6f6b79SSage Weil &ceph_inode(inode)->i_pg_inv_work)) { 17123c6f6b79SSage Weil dout("ceph_queue_invalidate %p\n", inode); 17133c6f6b79SSage Weil } else { 17143c6f6b79SSage Weil dout("ceph_queue_invalidate %p failed\n", inode); 171515a2015fSSage Weil iput(inode); 17163c6f6b79SSage Weil } 17173c6f6b79SSage Weil } 17183c6f6b79SSage Weil 17193c6f6b79SSage Weil /* 1720355da1ebSSage Weil * Invalidate inode pages in a worker thread. (This can't be done 1721355da1ebSSage Weil * in the message handler context.) 1722355da1ebSSage Weil */ 17233c6f6b79SSage Weil static void ceph_invalidate_work(struct work_struct *work) 1724355da1ebSSage Weil { 1725355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1726355da1ebSSage Weil i_pg_inv_work); 1727355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 17286c93df5dSYan, Zheng struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 1729355da1ebSSage Weil u32 orig_gen; 1730355da1ebSSage Weil int check = 0; 1731355da1ebSSage Weil 1732b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 17336c93df5dSYan, Zheng 17346c93df5dSYan, Zheng if (ACCESS_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) { 17356c93df5dSYan, Zheng pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n", 17366c93df5dSYan, Zheng inode, ceph_ino(inode)); 17376c93df5dSYan, Zheng mapping_set_error(inode->i_mapping, -EIO); 17386c93df5dSYan, Zheng truncate_pagecache(inode, 0); 17396c93df5dSYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 17406c93df5dSYan, Zheng goto out; 17416c93df5dSYan, Zheng } 17426c93df5dSYan, Zheng 1743be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1744355da1ebSSage Weil dout("invalidate_pages %p gen %d revoking %d\n", inode, 1745355da1ebSSage Weil ci->i_rdcache_gen, ci->i_rdcache_revoking); 1746cd045cb4SSage Weil if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { 17479563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 17489563f88cSYan, Zheng check = 1; 1749be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1750b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1751355da1ebSSage Weil goto out; 1752355da1ebSSage Weil } 1753355da1ebSSage Weil orig_gen = ci->i_rdcache_gen; 1754be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1755355da1ebSSage Weil 17569abd4db7SYan, Zheng if (invalidate_inode_pages2(inode->i_mapping) < 0) { 17579abd4db7SYan, Zheng pr_err("invalidate_pages %p fails\n", inode); 17589abd4db7SYan, Zheng } 1759355da1ebSSage Weil 1760be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1761cd045cb4SSage Weil if (orig_gen == ci->i_rdcache_gen && 1762cd045cb4SSage Weil orig_gen == ci->i_rdcache_revoking) { 1763355da1ebSSage Weil dout("invalidate_pages %p gen %d successful\n", inode, 1764355da1ebSSage Weil ci->i_rdcache_gen); 1765cd045cb4SSage Weil ci->i_rdcache_revoking--; 1766355da1ebSSage Weil check = 1; 1767355da1ebSSage Weil } else { 1768cd045cb4SSage Weil dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", 1769cd045cb4SSage Weil inode, orig_gen, ci->i_rdcache_gen, 1770cd045cb4SSage Weil ci->i_rdcache_revoking); 17719563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 17729563f88cSYan, Zheng check = 1; 1773355da1ebSSage Weil } 1774be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1775b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 17769563f88cSYan, Zheng out: 1777355da1ebSSage Weil if (check) 1778355da1ebSSage Weil ceph_check_caps(ci, 0, NULL); 1779355da1ebSSage Weil iput(inode); 1780355da1ebSSage Weil } 1781355da1ebSSage Weil 1782355da1ebSSage Weil 1783355da1ebSSage Weil /* 17843f99969fSYan, Zheng * called by trunc_wq; 1785355da1ebSSage Weil * 1786355da1ebSSage Weil * We also truncate in a separate thread as well. 1787355da1ebSSage Weil */ 17883c6f6b79SSage Weil static void ceph_vmtruncate_work(struct work_struct *work) 1789355da1ebSSage Weil { 1790355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1791355da1ebSSage Weil i_vmtruncate_work); 1792355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1793355da1ebSSage Weil 1794355da1ebSSage Weil dout("vmtruncate_work %p\n", inode); 1795b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 1796355da1ebSSage Weil iput(inode); 1797355da1ebSSage Weil } 1798355da1ebSSage Weil 1799355da1ebSSage Weil /* 18003c6f6b79SSage Weil * Queue an async vmtruncate. If we fail to queue work, we will handle 18013c6f6b79SSage Weil * the truncation the next time we call __ceph_do_pending_vmtruncate. 18023c6f6b79SSage Weil */ 18033c6f6b79SSage Weil void ceph_queue_vmtruncate(struct inode *inode) 18043c6f6b79SSage Weil { 18053c6f6b79SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 18063c6f6b79SSage Weil 180715a2015fSSage Weil ihold(inode); 180899ccbd22SMilosz Tanski 1809640ef79dSCheng Renquan if (queue_work(ceph_sb_to_client(inode->i_sb)->trunc_wq, 18103c6f6b79SSage Weil &ci->i_vmtruncate_work)) { 18113c6f6b79SSage Weil dout("ceph_queue_vmtruncate %p\n", inode); 18123c6f6b79SSage Weil } else { 18133c6f6b79SSage Weil dout("ceph_queue_vmtruncate %p failed, pending=%d\n", 18143c6f6b79SSage Weil inode, ci->i_truncate_pending); 181515a2015fSSage Weil iput(inode); 18163c6f6b79SSage Weil } 18173c6f6b79SSage Weil } 18183c6f6b79SSage Weil 18193c6f6b79SSage Weil /* 1820355da1ebSSage Weil * Make sure any pending truncation is applied before doing anything 1821355da1ebSSage Weil * that may depend on it. 1822355da1ebSSage Weil */ 1823b415bf4fSYan, Zheng void __ceph_do_pending_vmtruncate(struct inode *inode) 1824355da1ebSSage Weil { 1825355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1826355da1ebSSage Weil u64 to; 1827a85f50b6SYan, Zheng int wrbuffer_refs, finish = 0; 1828355da1ebSSage Weil 1829b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1830355da1ebSSage Weil retry: 1831be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1832355da1ebSSage Weil if (ci->i_truncate_pending == 0) { 1833355da1ebSSage Weil dout("__do_pending_vmtruncate %p none pending\n", inode); 1834be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1835b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1836355da1ebSSage Weil return; 1837355da1ebSSage Weil } 1838355da1ebSSage Weil 1839355da1ebSSage Weil /* 1840355da1ebSSage Weil * make sure any dirty snapped pages are flushed before we 1841355da1ebSSage Weil * possibly truncate them.. so write AND block! 1842355da1ebSSage Weil */ 1843355da1ebSSage Weil if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { 1844355da1ebSSage Weil dout("__do_pending_vmtruncate %p flushing snaps first\n", 1845355da1ebSSage Weil inode); 1846be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1847355da1ebSSage Weil filemap_write_and_wait_range(&inode->i_data, 0, 1848355da1ebSSage Weil inode->i_sb->s_maxbytes); 1849355da1ebSSage Weil goto retry; 1850355da1ebSSage Weil } 1851355da1ebSSage Weil 1852b0d7c223SYan, Zheng /* there should be no reader or writer */ 1853b0d7c223SYan, Zheng WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); 1854b0d7c223SYan, Zheng 1855355da1ebSSage Weil to = ci->i_truncate_size; 1856355da1ebSSage Weil wrbuffer_refs = ci->i_wrbuffer_ref; 1857355da1ebSSage Weil dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, 1858355da1ebSSage Weil ci->i_truncate_pending, to); 1859be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1860355da1ebSSage Weil 18614e217b5dSYan, Zheng truncate_pagecache(inode, to); 1862355da1ebSSage Weil 1863be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1864a85f50b6SYan, Zheng if (to == ci->i_truncate_size) { 1865a85f50b6SYan, Zheng ci->i_truncate_pending = 0; 1866a85f50b6SYan, Zheng finish = 1; 1867a85f50b6SYan, Zheng } 1868be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1869a85f50b6SYan, Zheng if (!finish) 1870a85f50b6SYan, Zheng goto retry; 1871355da1ebSSage Weil 1872b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1873b0d7c223SYan, Zheng 1874355da1ebSSage Weil if (wrbuffer_refs == 0) 1875355da1ebSSage Weil ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL); 1876a85f50b6SYan, Zheng 187703066f23SYehuda Sadeh wake_up_all(&ci->i_cap_wq); 1878355da1ebSSage Weil } 1879355da1ebSSage Weil 1880355da1ebSSage Weil /* 1881355da1ebSSage Weil * symlinks 1882355da1ebSSage Weil */ 1883355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops = { 1884355da1ebSSage Weil .readlink = generic_readlink, 18856b255391SAl Viro .get_link = simple_get_link, 18860b932672SYan, Zheng .setattr = ceph_setattr, 18870b932672SYan, Zheng .getattr = ceph_getattr, 18882cdeb1e4SAndreas Gruenbacher .setxattr = generic_setxattr, 18892cdeb1e4SAndreas Gruenbacher .getxattr = generic_getxattr, 18900b932672SYan, Zheng .listxattr = ceph_listxattr, 18912cdeb1e4SAndreas Gruenbacher .removexattr = generic_removexattr, 1892355da1ebSSage Weil }; 1893355da1ebSSage Weil 1894a26feccaSAndreas Gruenbacher int __ceph_setattr(struct inode *inode, struct iattr *attr) 1895355da1ebSSage Weil { 1896355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1897355da1ebSSage Weil const unsigned int ia_valid = attr->ia_valid; 1898355da1ebSSage Weil struct ceph_mds_request *req; 1899a26feccaSAndreas Gruenbacher struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; 1900f66fd9f0SYan, Zheng struct ceph_cap_flush *prealloc_cf; 1901355da1ebSSage Weil int issued; 1902355da1ebSSage Weil int release = 0, dirtied = 0; 1903355da1ebSSage Weil int mask = 0; 1904355da1ebSSage Weil int err = 0; 1905fca65b4aSSage Weil int inode_dirty_flags = 0; 1906604d1b02SYan, Zheng bool lock_snap_rwsem = false; 1907355da1ebSSage Weil 1908355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 1909355da1ebSSage Weil return -EROFS; 1910355da1ebSSage Weil 1911355da1ebSSage Weil err = inode_change_ok(inode, attr); 1912355da1ebSSage Weil if (err != 0) 1913355da1ebSSage Weil return err; 1914355da1ebSSage Weil 1915f66fd9f0SYan, Zheng prealloc_cf = ceph_alloc_cap_flush(); 1916f66fd9f0SYan, Zheng if (!prealloc_cf) 1917f66fd9f0SYan, Zheng return -ENOMEM; 1918f66fd9f0SYan, Zheng 1919355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, 1920355da1ebSSage Weil USE_AUTH_MDS); 1921f66fd9f0SYan, Zheng if (IS_ERR(req)) { 1922f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 1923355da1ebSSage Weil return PTR_ERR(req); 1924f66fd9f0SYan, Zheng } 1925355da1ebSSage Weil 1926be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1927355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 1928604d1b02SYan, Zheng 1929604d1b02SYan, Zheng if (!ci->i_head_snapc && 1930604d1b02SYan, Zheng (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { 1931604d1b02SYan, Zheng lock_snap_rwsem = true; 1932604d1b02SYan, Zheng if (!down_read_trylock(&mdsc->snap_rwsem)) { 1933604d1b02SYan, Zheng spin_unlock(&ci->i_ceph_lock); 1934604d1b02SYan, Zheng down_read(&mdsc->snap_rwsem); 1935604d1b02SYan, Zheng spin_lock(&ci->i_ceph_lock); 1936604d1b02SYan, Zheng issued = __ceph_caps_issued(ci, NULL); 1937604d1b02SYan, Zheng } 1938604d1b02SYan, Zheng } 1939604d1b02SYan, Zheng 1940355da1ebSSage Weil dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); 1941355da1ebSSage Weil 1942355da1ebSSage Weil if (ia_valid & ATTR_UID) { 1943355da1ebSSage Weil dout("setattr %p uid %d -> %d\n", inode, 1944bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 1945bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 1946355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1947355da1ebSSage Weil inode->i_uid = attr->ia_uid; 1948355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1949355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1950ab871b90SEric W. Biederman !uid_eq(attr->ia_uid, inode->i_uid)) { 1951ab871b90SEric W. Biederman req->r_args.setattr.uid = cpu_to_le32( 1952ab871b90SEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 1953355da1ebSSage Weil mask |= CEPH_SETATTR_UID; 1954355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1955355da1ebSSage Weil } 1956355da1ebSSage Weil } 1957355da1ebSSage Weil if (ia_valid & ATTR_GID) { 1958355da1ebSSage Weil dout("setattr %p gid %d -> %d\n", inode, 1959bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid), 1960bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 1961355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1962355da1ebSSage Weil inode->i_gid = attr->ia_gid; 1963355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1964355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1965ab871b90SEric W. Biederman !gid_eq(attr->ia_gid, inode->i_gid)) { 1966ab871b90SEric W. Biederman req->r_args.setattr.gid = cpu_to_le32( 1967ab871b90SEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 1968355da1ebSSage Weil mask |= CEPH_SETATTR_GID; 1969355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1970355da1ebSSage Weil } 1971355da1ebSSage Weil } 1972355da1ebSSage Weil if (ia_valid & ATTR_MODE) { 1973355da1ebSSage Weil dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, 1974355da1ebSSage Weil attr->ia_mode); 1975355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1976355da1ebSSage Weil inode->i_mode = attr->ia_mode; 1977355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1978355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1979355da1ebSSage Weil attr->ia_mode != inode->i_mode) { 19807221fe4cSGuangliang Zhao inode->i_mode = attr->ia_mode; 1981355da1ebSSage Weil req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); 1982355da1ebSSage Weil mask |= CEPH_SETATTR_MODE; 1983355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1984355da1ebSSage Weil } 1985355da1ebSSage Weil } 1986355da1ebSSage Weil 1987355da1ebSSage Weil if (ia_valid & ATTR_ATIME) { 1988355da1ebSSage Weil dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode, 1989355da1ebSSage Weil inode->i_atime.tv_sec, inode->i_atime.tv_nsec, 1990355da1ebSSage Weil attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); 1991355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 1992355da1ebSSage Weil ci->i_time_warp_seq++; 1993355da1ebSSage Weil inode->i_atime = attr->ia_atime; 1994355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1995355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 1996355da1ebSSage Weil timespec_compare(&inode->i_atime, 1997355da1ebSSage Weil &attr->ia_atime) < 0) { 1998355da1ebSSage Weil inode->i_atime = attr->ia_atime; 1999355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2000355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 2001355da1ebSSage Weil !timespec_equal(&inode->i_atime, &attr->ia_atime)) { 2002355da1ebSSage Weil ceph_encode_timespec(&req->r_args.setattr.atime, 2003355da1ebSSage Weil &attr->ia_atime); 2004355da1ebSSage Weil mask |= CEPH_SETATTR_ATIME; 2005355da1ebSSage Weil release |= CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD | 2006355da1ebSSage Weil CEPH_CAP_FILE_WR; 2007355da1ebSSage Weil } 2008355da1ebSSage Weil } 2009355da1ebSSage Weil if (ia_valid & ATTR_MTIME) { 2010355da1ebSSage Weil dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode, 2011355da1ebSSage Weil inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 2012355da1ebSSage Weil attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); 2013355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2014355da1ebSSage Weil ci->i_time_warp_seq++; 2015355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2016355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2017355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 2018355da1ebSSage Weil timespec_compare(&inode->i_mtime, 2019355da1ebSSage Weil &attr->ia_mtime) < 0) { 2020355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2021355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2022355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 2023355da1ebSSage Weil !timespec_equal(&inode->i_mtime, &attr->ia_mtime)) { 2024355da1ebSSage Weil ceph_encode_timespec(&req->r_args.setattr.mtime, 2025355da1ebSSage Weil &attr->ia_mtime); 2026355da1ebSSage Weil mask |= CEPH_SETATTR_MTIME; 2027355da1ebSSage Weil release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | 2028355da1ebSSage Weil CEPH_CAP_FILE_WR; 2029355da1ebSSage Weil } 2030355da1ebSSage Weil } 2031355da1ebSSage Weil if (ia_valid & ATTR_SIZE) { 2032355da1ebSSage Weil dout("setattr %p size %lld -> %lld\n", inode, 2033355da1ebSSage Weil inode->i_size, attr->ia_size); 2034355da1ebSSage Weil if ((issued & CEPH_CAP_FILE_EXCL) && 2035355da1ebSSage Weil attr->ia_size > inode->i_size) { 203699c88e69SYan, Zheng i_size_write(inode, attr->ia_size); 2037224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(attr->ia_size); 2038355da1ebSSage Weil inode->i_ctime = attr->ia_ctime; 2039355da1ebSSage Weil ci->i_reported_size = attr->ia_size; 2040355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2041355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 2042355da1ebSSage Weil attr->ia_size != inode->i_size) { 2043355da1ebSSage Weil req->r_args.setattr.size = cpu_to_le64(attr->ia_size); 2044355da1ebSSage Weil req->r_args.setattr.old_size = 2045355da1ebSSage Weil cpu_to_le64(inode->i_size); 2046355da1ebSSage Weil mask |= CEPH_SETATTR_SIZE; 2047355da1ebSSage Weil release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | 2048355da1ebSSage Weil CEPH_CAP_FILE_WR; 2049355da1ebSSage Weil } 2050355da1ebSSage Weil } 2051355da1ebSSage Weil 2052355da1ebSSage Weil /* these do nothing */ 2053355da1ebSSage Weil if (ia_valid & ATTR_CTIME) { 2054355da1ebSSage Weil bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| 2055355da1ebSSage Weil ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; 2056355da1ebSSage Weil dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode, 2057355da1ebSSage Weil inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 2058355da1ebSSage Weil attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, 2059355da1ebSSage Weil only ? "ctime only" : "ignored"); 2060355da1ebSSage Weil inode->i_ctime = attr->ia_ctime; 2061355da1ebSSage Weil if (only) { 2062355da1ebSSage Weil /* 2063355da1ebSSage Weil * if kernel wants to dirty ctime but nothing else, 2064355da1ebSSage Weil * we need to choose a cap to dirty under, or do 2065355da1ebSSage Weil * a almost-no-op setattr 2066355da1ebSSage Weil */ 2067355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) 2068355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2069355da1ebSSage Weil else if (issued & CEPH_CAP_FILE_EXCL) 2070355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2071355da1ebSSage Weil else if (issued & CEPH_CAP_XATTR_EXCL) 2072355da1ebSSage Weil dirtied |= CEPH_CAP_XATTR_EXCL; 2073355da1ebSSage Weil else 2074355da1ebSSage Weil mask |= CEPH_SETATTR_CTIME; 2075355da1ebSSage Weil } 2076355da1ebSSage Weil } 2077355da1ebSSage Weil if (ia_valid & ATTR_FILE) 2078355da1ebSSage Weil dout("setattr %p ATTR_FILE ... hrm!\n", inode); 2079355da1ebSSage Weil 2080355da1ebSSage Weil if (dirtied) { 2081f66fd9f0SYan, Zheng inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, 2082f66fd9f0SYan, Zheng &prealloc_cf); 20838bbd4714SDeepa Dinamani inode->i_ctime = current_fs_time(inode->i_sb); 2084355da1ebSSage Weil } 2085355da1ebSSage Weil 2086355da1ebSSage Weil release &= issued; 2087be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 2088604d1b02SYan, Zheng if (lock_snap_rwsem) 2089604d1b02SYan, Zheng up_read(&mdsc->snap_rwsem); 2090355da1ebSSage Weil 2091fca65b4aSSage Weil if (inode_dirty_flags) 2092fca65b4aSSage Weil __mark_inode_dirty(inode, inode_dirty_flags); 2093fca65b4aSSage Weil 20947221fe4cSGuangliang Zhao if (ia_valid & ATTR_MODE) { 20954db658eaSLinus Torvalds err = posix_acl_chmod(inode, attr->ia_mode); 20967221fe4cSGuangliang Zhao if (err) 20977221fe4cSGuangliang Zhao goto out_put; 20987221fe4cSGuangliang Zhao } 20997221fe4cSGuangliang Zhao 2100355da1ebSSage Weil if (mask) { 210170b666c3SSage Weil req->r_inode = inode; 210270b666c3SSage Weil ihold(inode); 2103355da1ebSSage Weil req->r_inode_drop = release; 2104355da1ebSSage Weil req->r_args.setattr.mask = cpu_to_le32(mask); 2105355da1ebSSage Weil req->r_num_caps = 1; 2106752c8bdcSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 2107355da1ebSSage Weil } 2108355da1ebSSage Weil dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, 2109355da1ebSSage Weil ceph_cap_string(dirtied), mask); 2110355da1ebSSage Weil 2111355da1ebSSage Weil ceph_mdsc_put_request(req); 2112b0d7c223SYan, Zheng if (mask & CEPH_SETATTR_SIZE) 2113b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 2114f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 2115355da1ebSSage Weil return err; 21167221fe4cSGuangliang Zhao out_put: 2117355da1ebSSage Weil ceph_mdsc_put_request(req); 2118f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 2119355da1ebSSage Weil return err; 2120355da1ebSSage Weil } 2121355da1ebSSage Weil 2122355da1ebSSage Weil /* 2123a26feccaSAndreas Gruenbacher * setattr 2124a26feccaSAndreas Gruenbacher */ 2125a26feccaSAndreas Gruenbacher int ceph_setattr(struct dentry *dentry, struct iattr *attr) 2126a26feccaSAndreas Gruenbacher { 2127a26feccaSAndreas Gruenbacher return __ceph_setattr(d_inode(dentry), attr); 2128a26feccaSAndreas Gruenbacher } 2129a26feccaSAndreas Gruenbacher 2130a26feccaSAndreas Gruenbacher /* 2131355da1ebSSage Weil * Verify that we have a lease on the given mask. If not, 2132355da1ebSSage Weil * do a getattr against an mds. 2133355da1ebSSage Weil */ 213401deead0SYan, Zheng int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 213501deead0SYan, Zheng int mask, bool force) 2136355da1ebSSage Weil { 21373d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 21383d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 2139355da1ebSSage Weil struct ceph_mds_request *req; 2140355da1ebSSage Weil int err; 2141355da1ebSSage Weil 2142355da1ebSSage Weil if (ceph_snap(inode) == CEPH_SNAPDIR) { 2143355da1ebSSage Weil dout("do_getattr inode %p SNAPDIR\n", inode); 2144355da1ebSSage Weil return 0; 2145355da1ebSSage Weil } 2146355da1ebSSage Weil 214701deead0SYan, Zheng dout("do_getattr inode %p mask %s mode 0%o\n", 214801deead0SYan, Zheng inode, ceph_cap_string(mask), inode->i_mode); 2149508b32d8SYan, Zheng if (!force && ceph_caps_issued_mask(ceph_inode(inode), mask, 1)) 2150355da1ebSSage Weil return 0; 2151355da1ebSSage Weil 2152355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS); 2153355da1ebSSage Weil if (IS_ERR(req)) 2154355da1ebSSage Weil return PTR_ERR(req); 215570b666c3SSage Weil req->r_inode = inode; 215670b666c3SSage Weil ihold(inode); 2157355da1ebSSage Weil req->r_num_caps = 1; 2158355da1ebSSage Weil req->r_args.getattr.mask = cpu_to_le32(mask); 215901deead0SYan, Zheng req->r_locked_page = locked_page; 2160355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 216101deead0SYan, Zheng if (locked_page && err == 0) { 216201deead0SYan, Zheng u64 inline_version = req->r_reply_info.targeti.inline_version; 216301deead0SYan, Zheng if (inline_version == 0) { 216401deead0SYan, Zheng /* the reply is supposed to contain inline data */ 216501deead0SYan, Zheng err = -EINVAL; 216601deead0SYan, Zheng } else if (inline_version == CEPH_INLINE_NONE) { 216701deead0SYan, Zheng err = -ENODATA; 216801deead0SYan, Zheng } else { 216901deead0SYan, Zheng err = req->r_reply_info.targeti.inline_len; 217001deead0SYan, Zheng } 217101deead0SYan, Zheng } 2172355da1ebSSage Weil ceph_mdsc_put_request(req); 2173355da1ebSSage Weil dout("do_getattr result=%d\n", err); 2174355da1ebSSage Weil return err; 2175355da1ebSSage Weil } 2176355da1ebSSage Weil 2177355da1ebSSage Weil 2178355da1ebSSage Weil /* 2179355da1ebSSage Weil * Check inode permissions. We verify we have a valid value for 2180355da1ebSSage Weil * the AUTH cap, then call the generic handler. 2181355da1ebSSage Weil */ 218210556cb2SAl Viro int ceph_permission(struct inode *inode, int mask) 2183355da1ebSSage Weil { 2184b74c79e9SNick Piggin int err; 2185b74c79e9SNick Piggin 218610556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 2187b74c79e9SNick Piggin return -ECHILD; 2188b74c79e9SNick Piggin 2189508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); 2190355da1ebSSage Weil 2191355da1ebSSage Weil if (!err) 21922830ba7fSAl Viro err = generic_permission(inode, mask); 2193355da1ebSSage Weil return err; 2194355da1ebSSage Weil } 2195355da1ebSSage Weil 2196355da1ebSSage Weil /* 2197355da1ebSSage Weil * Get all attributes. Hopefully somedata we'll have a statlite() 2198355da1ebSSage Weil * and can limit the fields we require to be accurate. 2199355da1ebSSage Weil */ 2200355da1ebSSage Weil int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, 2201355da1ebSSage Weil struct kstat *stat) 2202355da1ebSSage Weil { 22032b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 2204232d4b01SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 2205355da1ebSSage Weil int err; 2206355da1ebSSage Weil 2207508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL, false); 2208355da1ebSSage Weil if (!err) { 2209355da1ebSSage Weil generic_fillattr(inode, stat); 2210ad1fee96SYehuda Sadeh stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino); 2211355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 2212355da1ebSSage Weil stat->dev = ceph_snap(inode); 2213355da1ebSSage Weil else 2214355da1ebSSage Weil stat->dev = 0; 2215232d4b01SSage Weil if (S_ISDIR(inode->i_mode)) { 22161c1266bbSYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), 22171c1266bbSYehuda Sadeh RBYTES)) 2218232d4b01SSage Weil stat->size = ci->i_rbytes; 22191c1266bbSYehuda Sadeh else 22201c1266bbSYehuda Sadeh stat->size = ci->i_files + ci->i_subdirs; 2221232d4b01SSage Weil stat->blocks = 0; 2222355da1ebSSage Weil stat->blksize = 65536; 2223355da1ebSSage Weil } 2224232d4b01SSage Weil } 2225355da1ebSSage Weil return err; 2226355da1ebSSage Weil } 2227