1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 23d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 3355da1ebSSage Weil 4355da1ebSSage Weil #include <linux/module.h> 5355da1ebSSage Weil #include <linux/fs.h> 6355da1ebSSage Weil #include <linux/slab.h> 7355da1ebSSage Weil #include <linux/string.h> 8355da1ebSSage Weil #include <linux/uaccess.h> 9355da1ebSSage Weil #include <linux/kernel.h> 10355da1ebSSage Weil #include <linux/writeback.h> 11355da1ebSSage Weil #include <linux/vmalloc.h> 122cdeb1e4SAndreas Gruenbacher #include <linux/xattr.h> 134db658eaSLinus Torvalds #include <linux/posix_acl.h> 143e7fbe9cSYan, Zheng #include <linux/random.h> 15a407846eSYan, Zheng #include <linux/sort.h> 16a35ead31SJeff Layton #include <linux/iversion.h> 17355da1ebSSage Weil 18355da1ebSSage Weil #include "super.h" 193d14c5d2SYehuda Sadeh #include "mds_client.h" 2099ccbd22SMilosz Tanski #include "cache.h" 213d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 22355da1ebSSage Weil 23355da1ebSSage Weil /* 24355da1ebSSage Weil * Ceph inode operations 25355da1ebSSage Weil * 26355da1ebSSage Weil * Implement basic inode helpers (get, alloc) and inode ops (getattr, 27355da1ebSSage Weil * setattr, etc.), xattr helpers, and helpers for assimilating 28355da1ebSSage Weil * metadata returned by the MDS into our cache. 29355da1ebSSage Weil * 30355da1ebSSage Weil * Also define helpers for doing asynchronous writeback, invalidation, 31355da1ebSSage Weil * and truncation for the benefit of those who can't afford to block 32355da1ebSSage Weil * (typically because they are in the message handler path). 33355da1ebSSage Weil */ 34355da1ebSSage Weil 35355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops; 36355da1ebSSage Weil 371cf89a8dSYan, Zheng static void ceph_inode_work(struct work_struct *work); 38355da1ebSSage Weil 39355da1ebSSage Weil /* 40355da1ebSSage Weil * find or create an inode, given the ceph ino number 41355da1ebSSage Weil */ 42ad1fee96SYehuda Sadeh static int ceph_set_ino_cb(struct inode *inode, void *data) 43ad1fee96SYehuda Sadeh { 44ad1fee96SYehuda Sadeh ceph_inode(inode)->i_vino = *(struct ceph_vino *)data; 45ad1fee96SYehuda Sadeh inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data); 46a35ead31SJeff Layton inode_set_iversion_raw(inode, 0); 47ad1fee96SYehuda Sadeh return 0; 48ad1fee96SYehuda Sadeh } 49ad1fee96SYehuda Sadeh 50355da1ebSSage Weil struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) 51355da1ebSSage Weil { 52355da1ebSSage Weil struct inode *inode; 53355da1ebSSage Weil ino_t t = ceph_vino_to_ino(vino); 54355da1ebSSage Weil 55355da1ebSSage Weil inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino); 56d37b1d99SMarkus Elfring if (!inode) 57355da1ebSSage Weil return ERR_PTR(-ENOMEM); 58355da1ebSSage Weil if (inode->i_state & I_NEW) { 59355da1ebSSage Weil dout("get_inode created new inode %p %llx.%llx ino %llx\n", 60355da1ebSSage Weil inode, ceph_vinop(inode), (u64)inode->i_ino); 61355da1ebSSage Weil unlock_new_inode(inode); 62355da1ebSSage Weil } 63355da1ebSSage Weil 64355da1ebSSage Weil dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino, 65355da1ebSSage Weil vino.snap, inode); 66355da1ebSSage Weil return inode; 67355da1ebSSage Weil } 68355da1ebSSage Weil 69355da1ebSSage Weil /* 70355da1ebSSage Weil * get/constuct snapdir inode for a given directory 71355da1ebSSage Weil */ 72355da1ebSSage Weil struct inode *ceph_get_snapdir(struct inode *parent) 73355da1ebSSage Weil { 74355da1ebSSage Weil struct ceph_vino vino = { 75355da1ebSSage Weil .ino = ceph_ino(parent), 76355da1ebSSage Weil .snap = CEPH_SNAPDIR, 77355da1ebSSage Weil }; 78355da1ebSSage Weil struct inode *inode = ceph_get_inode(parent->i_sb, vino); 79b377ff13SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 80355da1ebSSage Weil 81355da1ebSSage Weil BUG_ON(!S_ISDIR(parent->i_mode)); 82355da1ebSSage Weil if (IS_ERR(inode)) 837e34bc52SJulia Lawall return inode; 84355da1ebSSage Weil inode->i_mode = parent->i_mode; 85355da1ebSSage Weil inode->i_uid = parent->i_uid; 86355da1ebSSage Weil inode->i_gid = parent->i_gid; 8738c48b5fSYan, Zheng inode->i_op = &ceph_snapdir_iops; 8838c48b5fSYan, Zheng inode->i_fop = &ceph_snapdir_fops; 89b377ff13SSage Weil ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ 90b377ff13SSage Weil ci->i_rbytes = 0; 91355da1ebSSage Weil return inode; 92355da1ebSSage Weil } 93355da1ebSSage Weil 94355da1ebSSage Weil const struct inode_operations ceph_file_iops = { 95355da1ebSSage Weil .permission = ceph_permission, 96355da1ebSSage Weil .setattr = ceph_setattr, 97355da1ebSSage Weil .getattr = ceph_getattr, 98355da1ebSSage Weil .listxattr = ceph_listxattr, 997221fe4cSGuangliang Zhao .get_acl = ceph_get_acl, 10072466d0bSSage Weil .set_acl = ceph_set_acl, 101355da1ebSSage Weil }; 102355da1ebSSage Weil 103355da1ebSSage Weil 104355da1ebSSage Weil /* 105355da1ebSSage Weil * We use a 'frag tree' to keep track of the MDS's directory fragments 106355da1ebSSage Weil * for a given inode (usually there is just a single fragment). We 107355da1ebSSage Weil * need to know when a child frag is delegated to a new MDS, or when 108355da1ebSSage Weil * it is flagged as replicated, so we can direct our requests 109355da1ebSSage Weil * accordingly. 110355da1ebSSage Weil */ 111355da1ebSSage Weil 112355da1ebSSage Weil /* 113355da1ebSSage Weil * find/create a frag in the tree 114355da1ebSSage Weil */ 115355da1ebSSage Weil static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, 116355da1ebSSage Weil u32 f) 117355da1ebSSage Weil { 118355da1ebSSage Weil struct rb_node **p; 119355da1ebSSage Weil struct rb_node *parent = NULL; 120355da1ebSSage Weil struct ceph_inode_frag *frag; 121355da1ebSSage Weil int c; 122355da1ebSSage Weil 123355da1ebSSage Weil p = &ci->i_fragtree.rb_node; 124355da1ebSSage Weil while (*p) { 125355da1ebSSage Weil parent = *p; 126355da1ebSSage Weil frag = rb_entry(parent, struct ceph_inode_frag, node); 127355da1ebSSage Weil c = ceph_frag_compare(f, frag->frag); 128355da1ebSSage Weil if (c < 0) 129355da1ebSSage Weil p = &(*p)->rb_left; 130355da1ebSSage Weil else if (c > 0) 131355da1ebSSage Weil p = &(*p)->rb_right; 132355da1ebSSage Weil else 133355da1ebSSage Weil return frag; 134355da1ebSSage Weil } 135355da1ebSSage Weil 136355da1ebSSage Weil frag = kmalloc(sizeof(*frag), GFP_NOFS); 13751308806SMarkus Elfring if (!frag) 138355da1ebSSage Weil return ERR_PTR(-ENOMEM); 13951308806SMarkus Elfring 140355da1ebSSage Weil frag->frag = f; 141355da1ebSSage Weil frag->split_by = 0; 142355da1ebSSage Weil frag->mds = -1; 143355da1ebSSage Weil frag->ndist = 0; 144355da1ebSSage Weil 145355da1ebSSage Weil rb_link_node(&frag->node, parent, p); 146355da1ebSSage Weil rb_insert_color(&frag->node, &ci->i_fragtree); 147355da1ebSSage Weil 148355da1ebSSage Weil dout("get_or_create_frag added %llx.%llx frag %x\n", 149355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 150355da1ebSSage Weil return frag; 151355da1ebSSage Weil } 152355da1ebSSage Weil 153355da1ebSSage Weil /* 154355da1ebSSage Weil * find a specific frag @f 155355da1ebSSage Weil */ 156355da1ebSSage Weil struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) 157355da1ebSSage Weil { 158355da1ebSSage Weil struct rb_node *n = ci->i_fragtree.rb_node; 159355da1ebSSage Weil 160355da1ebSSage Weil while (n) { 161355da1ebSSage Weil struct ceph_inode_frag *frag = 162355da1ebSSage Weil rb_entry(n, struct ceph_inode_frag, node); 163355da1ebSSage Weil int c = ceph_frag_compare(f, frag->frag); 164355da1ebSSage Weil if (c < 0) 165355da1ebSSage Weil n = n->rb_left; 166355da1ebSSage Weil else if (c > 0) 167355da1ebSSage Weil n = n->rb_right; 168355da1ebSSage Weil else 169355da1ebSSage Weil return frag; 170355da1ebSSage Weil } 171355da1ebSSage Weil return NULL; 172355da1ebSSage Weil } 173355da1ebSSage Weil 174355da1ebSSage Weil /* 175355da1ebSSage Weil * Choose frag containing the given value @v. If @pfrag is 176355da1ebSSage Weil * specified, copy the frag delegation info to the caller if 177355da1ebSSage Weil * it is present. 178355da1ebSSage Weil */ 1793e7fbe9cSYan, Zheng static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 1803e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 181355da1ebSSage Weil { 182355da1ebSSage Weil u32 t = ceph_frag_make(0, 0); 183355da1ebSSage Weil struct ceph_inode_frag *frag; 184355da1ebSSage Weil unsigned nway, i; 185355da1ebSSage Weil u32 n; 186355da1ebSSage Weil 187355da1ebSSage Weil if (found) 188355da1ebSSage Weil *found = 0; 189355da1ebSSage Weil 190355da1ebSSage Weil while (1) { 191355da1ebSSage Weil WARN_ON(!ceph_frag_contains_value(t, v)); 192355da1ebSSage Weil frag = __ceph_find_frag(ci, t); 193355da1ebSSage Weil if (!frag) 194355da1ebSSage Weil break; /* t is a leaf */ 195355da1ebSSage Weil if (frag->split_by == 0) { 196355da1ebSSage Weil if (pfrag) 197355da1ebSSage Weil memcpy(pfrag, frag, sizeof(*pfrag)); 198355da1ebSSage Weil if (found) 199355da1ebSSage Weil *found = 1; 200355da1ebSSage Weil break; 201355da1ebSSage Weil } 202355da1ebSSage Weil 203355da1ebSSage Weil /* choose child */ 204355da1ebSSage Weil nway = 1 << frag->split_by; 205355da1ebSSage Weil dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, 206355da1ebSSage Weil frag->split_by, nway); 207355da1ebSSage Weil for (i = 0; i < nway; i++) { 208355da1ebSSage Weil n = ceph_frag_make_child(t, frag->split_by, i); 209355da1ebSSage Weil if (ceph_frag_contains_value(n, v)) { 210355da1ebSSage Weil t = n; 211355da1ebSSage Weil break; 212355da1ebSSage Weil } 213355da1ebSSage Weil } 214355da1ebSSage Weil BUG_ON(i == nway); 215355da1ebSSage Weil } 216355da1ebSSage Weil dout("choose_frag(%x) = %x\n", v, t); 217355da1ebSSage Weil 218355da1ebSSage Weil return t; 219355da1ebSSage Weil } 220355da1ebSSage Weil 2213e7fbe9cSYan, Zheng u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2223e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 2233e7fbe9cSYan, Zheng { 2243e7fbe9cSYan, Zheng u32 ret; 2253e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 2263e7fbe9cSYan, Zheng ret = __ceph_choose_frag(ci, v, pfrag, found); 2273e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 2283e7fbe9cSYan, Zheng return ret; 2293e7fbe9cSYan, Zheng } 2303e7fbe9cSYan, Zheng 231355da1ebSSage Weil /* 232355da1ebSSage Weil * Process dirfrag (delegation) info from the mds. Include leaf 233355da1ebSSage Weil * fragment in tree ONLY if ndist > 0. Otherwise, only 234355da1ebSSage Weil * branches/splits are included in i_fragtree) 235355da1ebSSage Weil */ 236355da1ebSSage Weil static int ceph_fill_dirfrag(struct inode *inode, 237355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo) 238355da1ebSSage Weil { 239355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 240355da1ebSSage Weil struct ceph_inode_frag *frag; 241355da1ebSSage Weil u32 id = le32_to_cpu(dirinfo->frag); 242355da1ebSSage Weil int mds = le32_to_cpu(dirinfo->auth); 243355da1ebSSage Weil int ndist = le32_to_cpu(dirinfo->ndist); 2448d08503cSYan, Zheng int diri_auth = -1; 245355da1ebSSage Weil int i; 246355da1ebSSage Weil int err = 0; 247355da1ebSSage Weil 2488d08503cSYan, Zheng spin_lock(&ci->i_ceph_lock); 2498d08503cSYan, Zheng if (ci->i_auth_cap) 2508d08503cSYan, Zheng diri_auth = ci->i_auth_cap->mds; 2518d08503cSYan, Zheng spin_unlock(&ci->i_ceph_lock); 2528d08503cSYan, Zheng 25342172119SYan, Zheng if (mds == -1) /* CDIR_AUTH_PARENT */ 25442172119SYan, Zheng mds = diri_auth; 25542172119SYan, Zheng 256355da1ebSSage Weil mutex_lock(&ci->i_fragtree_mutex); 2578d08503cSYan, Zheng if (ndist == 0 && mds == diri_auth) { 258355da1ebSSage Weil /* no delegation info needed. */ 259355da1ebSSage Weil frag = __ceph_find_frag(ci, id); 260355da1ebSSage Weil if (!frag) 261355da1ebSSage Weil goto out; 262355da1ebSSage Weil if (frag->split_by == 0) { 263355da1ebSSage Weil /* tree leaf, remove */ 264355da1ebSSage Weil dout("fill_dirfrag removed %llx.%llx frag %x" 265355da1ebSSage Weil " (no ref)\n", ceph_vinop(inode), id); 266355da1ebSSage Weil rb_erase(&frag->node, &ci->i_fragtree); 267355da1ebSSage Weil kfree(frag); 268355da1ebSSage Weil } else { 269355da1ebSSage Weil /* tree branch, keep and clear */ 270355da1ebSSage Weil dout("fill_dirfrag cleared %llx.%llx frag %x" 271355da1ebSSage Weil " referral\n", ceph_vinop(inode), id); 272355da1ebSSage Weil frag->mds = -1; 273355da1ebSSage Weil frag->ndist = 0; 274355da1ebSSage Weil } 275355da1ebSSage Weil goto out; 276355da1ebSSage Weil } 277355da1ebSSage Weil 278355da1ebSSage Weil 279355da1ebSSage Weil /* find/add this frag to store mds delegation info */ 280355da1ebSSage Weil frag = __get_or_create_frag(ci, id); 281355da1ebSSage Weil if (IS_ERR(frag)) { 282355da1ebSSage Weil /* this is not the end of the world; we can continue 283355da1ebSSage Weil with bad/inaccurate delegation info */ 284355da1ebSSage Weil pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", 285355da1ebSSage Weil ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); 286355da1ebSSage Weil err = -ENOMEM; 287355da1ebSSage Weil goto out; 288355da1ebSSage Weil } 289355da1ebSSage Weil 290355da1ebSSage Weil frag->mds = mds; 291355da1ebSSage Weil frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); 292355da1ebSSage Weil for (i = 0; i < frag->ndist; i++) 293355da1ebSSage Weil frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); 294355da1ebSSage Weil dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", 295355da1ebSSage Weil ceph_vinop(inode), frag->frag, frag->ndist); 296355da1ebSSage Weil 297355da1ebSSage Weil out: 298355da1ebSSage Weil mutex_unlock(&ci->i_fragtree_mutex); 299355da1ebSSage Weil return err; 300355da1ebSSage Weil } 301355da1ebSSage Weil 302a407846eSYan, Zheng static int frag_tree_split_cmp(const void *l, const void *r) 303a407846eSYan, Zheng { 304a407846eSYan, Zheng struct ceph_frag_tree_split *ls = (struct ceph_frag_tree_split*)l; 305a407846eSYan, Zheng struct ceph_frag_tree_split *rs = (struct ceph_frag_tree_split*)r; 306fe2ed425SJeff Layton return ceph_frag_compare(le32_to_cpu(ls->frag), 307fe2ed425SJeff Layton le32_to_cpu(rs->frag)); 308a407846eSYan, Zheng } 309a407846eSYan, Zheng 310a4b7431fSYan, Zheng static bool is_frag_child(u32 f, struct ceph_inode_frag *frag) 311a4b7431fSYan, Zheng { 312a4b7431fSYan, Zheng if (!frag) 313a4b7431fSYan, Zheng return f == ceph_frag_make(0, 0); 314a4b7431fSYan, Zheng if (ceph_frag_bits(f) != ceph_frag_bits(frag->frag) + frag->split_by) 315a4b7431fSYan, Zheng return false; 316a4b7431fSYan, Zheng return ceph_frag_contains_value(frag->frag, ceph_frag_value(f)); 317a4b7431fSYan, Zheng } 318a4b7431fSYan, Zheng 3193e7fbe9cSYan, Zheng static int ceph_fill_fragtree(struct inode *inode, 3203e7fbe9cSYan, Zheng struct ceph_frag_tree_head *fragtree, 3213e7fbe9cSYan, Zheng struct ceph_mds_reply_dirfrag *dirinfo) 3223e7fbe9cSYan, Zheng { 3233e7fbe9cSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 324a4b7431fSYan, Zheng struct ceph_inode_frag *frag, *prev_frag = NULL; 3253e7fbe9cSYan, Zheng struct rb_node *rb_node; 3261b1bc16dSYan, Zheng unsigned i, split_by, nsplits; 3271b1bc16dSYan, Zheng u32 id; 3283e7fbe9cSYan, Zheng bool update = false; 3293e7fbe9cSYan, Zheng 3303e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 3313e7fbe9cSYan, Zheng nsplits = le32_to_cpu(fragtree->nsplits); 3321b1bc16dSYan, Zheng if (nsplits != ci->i_fragtree_nsplits) { 3331b1bc16dSYan, Zheng update = true; 3341b1bc16dSYan, Zheng } else if (nsplits) { 3353e7fbe9cSYan, Zheng i = prandom_u32() % nsplits; 3363e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3373e7fbe9cSYan, Zheng if (!__ceph_find_frag(ci, id)) 3383e7fbe9cSYan, Zheng update = true; 3393e7fbe9cSYan, Zheng } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { 3403e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3413e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3423e7fbe9cSYan, Zheng if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) 3433e7fbe9cSYan, Zheng update = true; 3443e7fbe9cSYan, Zheng } 3453e7fbe9cSYan, Zheng if (!update && dirinfo) { 3463e7fbe9cSYan, Zheng id = le32_to_cpu(dirinfo->frag); 3473e7fbe9cSYan, Zheng if (id != __ceph_choose_frag(ci, id, NULL, NULL)) 3483e7fbe9cSYan, Zheng update = true; 3493e7fbe9cSYan, Zheng } 3503e7fbe9cSYan, Zheng if (!update) 3513e7fbe9cSYan, Zheng goto out_unlock; 3523e7fbe9cSYan, Zheng 353a407846eSYan, Zheng if (nsplits > 1) { 354a407846eSYan, Zheng sort(fragtree->splits, nsplits, sizeof(fragtree->splits[0]), 355a407846eSYan, Zheng frag_tree_split_cmp, NULL); 356a407846eSYan, Zheng } 357a407846eSYan, Zheng 3583e7fbe9cSYan, Zheng dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); 3593e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3603e7fbe9cSYan, Zheng for (i = 0; i < nsplits; i++) { 3613e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3621b1bc16dSYan, Zheng split_by = le32_to_cpu(fragtree->splits[i].by); 3631b1bc16dSYan, Zheng if (split_by == 0 || ceph_frag_bits(id) + split_by > 24) { 3641b1bc16dSYan, Zheng pr_err("fill_fragtree %llx.%llx invalid split %d/%u, " 3651b1bc16dSYan, Zheng "frag %x split by %d\n", ceph_vinop(inode), 3661b1bc16dSYan, Zheng i, nsplits, id, split_by); 3671b1bc16dSYan, Zheng continue; 3681b1bc16dSYan, Zheng } 3693e7fbe9cSYan, Zheng frag = NULL; 3703e7fbe9cSYan, Zheng while (rb_node) { 3713e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3723e7fbe9cSYan, Zheng if (ceph_frag_compare(frag->frag, id) >= 0) { 3733e7fbe9cSYan, Zheng if (frag->frag != id) 3743e7fbe9cSYan, Zheng frag = NULL; 3753e7fbe9cSYan, Zheng else 3763e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3773e7fbe9cSYan, Zheng break; 3783e7fbe9cSYan, Zheng } 3793e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 380a4b7431fSYan, Zheng /* delete stale split/leaf node */ 381a4b7431fSYan, Zheng if (frag->split_by > 0 || 382a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 3833e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 3841b1bc16dSYan, Zheng if (frag->split_by > 0) 3851b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 3863e7fbe9cSYan, Zheng kfree(frag); 387a4b7431fSYan, Zheng } 3883e7fbe9cSYan, Zheng frag = NULL; 3893e7fbe9cSYan, Zheng } 3903e7fbe9cSYan, Zheng if (!frag) { 3913e7fbe9cSYan, Zheng frag = __get_or_create_frag(ci, id); 3923e7fbe9cSYan, Zheng if (IS_ERR(frag)) 3933e7fbe9cSYan, Zheng continue; 3943e7fbe9cSYan, Zheng } 3951b1bc16dSYan, Zheng if (frag->split_by == 0) 3961b1bc16dSYan, Zheng ci->i_fragtree_nsplits++; 3971b1bc16dSYan, Zheng frag->split_by = split_by; 3983e7fbe9cSYan, Zheng dout(" frag %x split by %d\n", frag->frag, frag->split_by); 399a4b7431fSYan, Zheng prev_frag = frag; 4003e7fbe9cSYan, Zheng } 4013e7fbe9cSYan, Zheng while (rb_node) { 4023e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 4033e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 404a4b7431fSYan, Zheng /* delete stale split/leaf node */ 405a4b7431fSYan, Zheng if (frag->split_by > 0 || 406a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 4073e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 4081b1bc16dSYan, Zheng if (frag->split_by > 0) 4091b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 4103e7fbe9cSYan, Zheng kfree(frag); 4113e7fbe9cSYan, Zheng } 412a4b7431fSYan, Zheng } 4133e7fbe9cSYan, Zheng out_unlock: 4143e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 4153e7fbe9cSYan, Zheng return 0; 4163e7fbe9cSYan, Zheng } 417355da1ebSSage Weil 418355da1ebSSage Weil /* 419355da1ebSSage Weil * initialize a newly allocated inode. 420355da1ebSSage Weil */ 421355da1ebSSage Weil struct inode *ceph_alloc_inode(struct super_block *sb) 422355da1ebSSage Weil { 423355da1ebSSage Weil struct ceph_inode_info *ci; 424355da1ebSSage Weil int i; 425355da1ebSSage Weil 426355da1ebSSage Weil ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); 427355da1ebSSage Weil if (!ci) 428355da1ebSSage Weil return NULL; 429355da1ebSSage Weil 430355da1ebSSage Weil dout("alloc_inode %p\n", &ci->vfs_inode); 431355da1ebSSage Weil 432be655596SSage Weil spin_lock_init(&ci->i_ceph_lock); 433be655596SSage Weil 434355da1ebSSage Weil ci->i_version = 0; 43531c542a1SYan, Zheng ci->i_inline_version = 0; 436355da1ebSSage Weil ci->i_time_warp_seq = 0; 437355da1ebSSage Weil ci->i_ceph_flags = 0; 438fdd4e158SYan, Zheng atomic64_set(&ci->i_ordered_count, 1); 439fdd4e158SYan, Zheng atomic64_set(&ci->i_release_count, 1); 440fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], 0); 441fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], 0); 442355da1ebSSage Weil ci->i_symlink = NULL; 443355da1ebSSage Weil 444fb18a575SLuis Henriques ci->i_max_bytes = 0; 445fb18a575SLuis Henriques ci->i_max_files = 0; 446fb18a575SLuis Henriques 4476c0f3af7SSage Weil memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); 44830c156d9SYan, Zheng RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL); 4496c0f3af7SSage Weil 450355da1ebSSage Weil ci->i_fragtree = RB_ROOT; 451355da1ebSSage Weil mutex_init(&ci->i_fragtree_mutex); 452355da1ebSSage Weil 453355da1ebSSage Weil ci->i_xattrs.blob = NULL; 454355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 455355da1ebSSage Weil ci->i_xattrs.dirty = false; 456355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 457355da1ebSSage Weil ci->i_xattrs.count = 0; 458355da1ebSSage Weil ci->i_xattrs.names_size = 0; 459355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 460355da1ebSSage Weil ci->i_xattrs.version = 0; 461355da1ebSSage Weil ci->i_xattrs.index_version = 0; 462355da1ebSSage Weil 463355da1ebSSage Weil ci->i_caps = RB_ROOT; 464355da1ebSSage Weil ci->i_auth_cap = NULL; 465355da1ebSSage Weil ci->i_dirty_caps = 0; 466355da1ebSSage Weil ci->i_flushing_caps = 0; 467355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_dirty_item); 468355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_flushing_item); 469f66fd9f0SYan, Zheng ci->i_prealloc_cap_flush = NULL; 470e4500b5eSYan, Zheng INIT_LIST_HEAD(&ci->i_cap_flush_list); 471355da1ebSSage Weil init_waitqueue_head(&ci->i_cap_wq); 472355da1ebSSage Weil ci->i_hold_caps_min = 0; 473355da1ebSSage Weil ci->i_hold_caps_max = 0; 474355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_delay_list); 475355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_snaps); 476355da1ebSSage Weil ci->i_head_snapc = NULL; 477355da1ebSSage Weil ci->i_snap_caps = 0; 478355da1ebSSage Weil 479774a6a11SYan, Zheng for (i = 0; i < CEPH_FILE_MODE_BITS; i++) 480355da1ebSSage Weil ci->i_nr_by_mode[i] = 0; 481355da1ebSSage Weil 482b0d7c223SYan, Zheng mutex_init(&ci->i_truncate_mutex); 483355da1ebSSage Weil ci->i_truncate_seq = 0; 484355da1ebSSage Weil ci->i_truncate_size = 0; 485355da1ebSSage Weil ci->i_truncate_pending = 0; 486355da1ebSSage Weil 487355da1ebSSage Weil ci->i_max_size = 0; 488355da1ebSSage Weil ci->i_reported_size = 0; 489355da1ebSSage Weil ci->i_wanted_max_size = 0; 490355da1ebSSage Weil ci->i_requested_max_size = 0; 491355da1ebSSage Weil 492355da1ebSSage Weil ci->i_pin_ref = 0; 493355da1ebSSage Weil ci->i_rd_ref = 0; 494355da1ebSSage Weil ci->i_rdcache_ref = 0; 495355da1ebSSage Weil ci->i_wr_ref = 0; 496d3d0720dSHenry C Chang ci->i_wb_ref = 0; 497355da1ebSSage Weil ci->i_wrbuffer_ref = 0; 498355da1ebSSage Weil ci->i_wrbuffer_ref_head = 0; 49989aa5930SYan, Zheng atomic_set(&ci->i_filelock_ref, 0); 5001e9c2eb6SYan, Zheng atomic_set(&ci->i_shared_gen, 1); 501355da1ebSSage Weil ci->i_rdcache_gen = 0; 502355da1ebSSage Weil ci->i_rdcache_revoking = 0; 503355da1ebSSage Weil 504355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_dirops); 50568cd5b4bSYan, Zheng INIT_LIST_HEAD(&ci->i_unsafe_iops); 506355da1ebSSage Weil spin_lock_init(&ci->i_unsafe_lock); 507355da1ebSSage Weil 508355da1ebSSage Weil ci->i_snap_realm = NULL; 509355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_realm_item); 510355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_flush_item); 511355da1ebSSage Weil 5121cf89a8dSYan, Zheng INIT_WORK(&ci->i_work, ceph_inode_work); 5131cf89a8dSYan, Zheng ci->i_work_mask = 0; 514245ce991SJeff Layton memset(&ci->i_btime, '\0', sizeof(ci->i_btime)); 515355da1ebSSage Weil 51699ccbd22SMilosz Tanski ceph_fscache_inode_init(ci); 51799ccbd22SMilosz Tanski 518f4b97866SYan, Zheng ci->i_meta_err = 0; 519f4b97866SYan, Zheng 520355da1ebSSage Weil return &ci->vfs_inode; 521355da1ebSSage Weil } 522355da1ebSSage Weil 523cfa6d412SAl Viro void ceph_free_inode(struct inode *inode) 524fa0d7e3dSNick Piggin { 525fa0d7e3dSNick Piggin struct ceph_inode_info *ci = ceph_inode(inode); 526fa0d7e3dSNick Piggin 527daf5cc27SAl Viro kfree(ci->i_symlink); 528fa0d7e3dSNick Piggin kmem_cache_free(ceph_inode_cachep, ci); 529fa0d7e3dSNick Piggin } 530fa0d7e3dSNick Piggin 53187bc5b89SYan, Zheng void ceph_evict_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 53787bc5b89SYan, Zheng dout("evict_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); 53887bc5b89SYan, Zheng 53987bc5b89SYan, Zheng truncate_inode_pages_final(&inode->i_data); 54087bc5b89SYan, Zheng clear_inode(inode); 541355da1ebSSage Weil 54299ccbd22SMilosz Tanski ceph_fscache_unregister_inode_cookie(ci); 54399ccbd22SMilosz Tanski 544d6e47819SYan, Zheng __ceph_remove_caps(ci); 545355da1ebSSage Weil 546d557c48dSLuis Henriques if (__ceph_has_any_quota(ci)) 547d557c48dSLuis Henriques ceph_adjust_quota_realms_count(inode, false); 548d557c48dSLuis Henriques 5498b218b8aSSage Weil /* 5508b218b8aSSage Weil * we may still have a snap_realm reference if there are stray 551d9df2783SYan, Zheng * caps in i_snap_caps. 5528b218b8aSSage Weil */ 5538b218b8aSSage Weil if (ci->i_snap_realm) { 5548b218b8aSSage Weil struct ceph_mds_client *mdsc = 55575c9627eSYan, Zheng ceph_inode_to_client(inode)->mdsc; 55675c9627eSYan, Zheng if (ceph_snap(inode) == CEPH_NOSNAP) { 5578b218b8aSSage Weil struct ceph_snap_realm *realm = ci->i_snap_realm; 55875c9627eSYan, Zheng dout(" dropping residual ref to snap realm %p\n", 55975c9627eSYan, Zheng realm); 5608b218b8aSSage Weil spin_lock(&realm->inodes_with_caps_lock); 5618b218b8aSSage Weil list_del_init(&ci->i_snap_realm_item); 562e3161f17SLuis Henriques ci->i_snap_realm = NULL; 563e3161f17SLuis Henriques if (realm->ino == ci->i_vino.ino) 564e3161f17SLuis Henriques realm->inode = NULL; 5658b218b8aSSage Weil spin_unlock(&realm->inodes_with_caps_lock); 5668b218b8aSSage Weil ceph_put_snap_realm(mdsc, realm); 56775c9627eSYan, Zheng } else { 56875c9627eSYan, Zheng ceph_put_snapid_map(mdsc, ci->i_snapid_map); 56975c9627eSYan, Zheng ci->i_snap_realm = NULL; 57075c9627eSYan, Zheng } 5718b218b8aSSage Weil } 5728b218b8aSSage Weil 573355da1ebSSage Weil while ((n = rb_first(&ci->i_fragtree)) != NULL) { 574355da1ebSSage Weil frag = rb_entry(n, struct ceph_inode_frag, node); 575355da1ebSSage Weil rb_erase(n, &ci->i_fragtree); 576355da1ebSSage Weil kfree(frag); 577355da1ebSSage Weil } 5781b1bc16dSYan, Zheng ci->i_fragtree_nsplits = 0; 579355da1ebSSage Weil 580355da1ebSSage Weil __ceph_destroy_xattrs(ci); 581b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 582355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 583b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 584355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 585355da1ebSSage Weil 586779fe0fbSYan, Zheng ceph_put_string(rcu_dereference_raw(ci->i_layout.pool_ns)); 587355da1ebSSage Weil } 588355da1ebSSage Weil 589224a7542SYan, Zheng static inline blkcnt_t calc_inode_blocks(u64 size) 590224a7542SYan, Zheng { 591224a7542SYan, Zheng return (size + (1<<9) - 1) >> 9; 592224a7542SYan, Zheng } 593224a7542SYan, Zheng 594355da1ebSSage Weil /* 595355da1ebSSage Weil * Helpers to fill in size, ctime, mtime, and atime. We have to be 596355da1ebSSage Weil * careful because either the client or MDS may have more up to date 597355da1ebSSage Weil * info, depending on which capabilities are held, and whether 598355da1ebSSage Weil * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime 599355da1ebSSage Weil * and size are monotonically increasing, except when utimes() or 600355da1ebSSage Weil * truncate() increments the corresponding _seq values.) 601355da1ebSSage Weil */ 602355da1ebSSage Weil int ceph_fill_file_size(struct inode *inode, int issued, 603355da1ebSSage Weil u32 truncate_seq, u64 truncate_size, u64 size) 604355da1ebSSage Weil { 605355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 606355da1ebSSage Weil int queue_trunc = 0; 607355da1ebSSage Weil 608355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || 609355da1ebSSage Weil (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { 610355da1ebSSage Weil dout("size %lld -> %llu\n", inode->i_size, size); 611a3d714c3SYan, Zheng if (size > 0 && S_ISDIR(inode->i_mode)) { 612a3d714c3SYan, Zheng pr_err("fill_file_size non-zero size for directory\n"); 613a3d714c3SYan, Zheng size = 0; 614a3d714c3SYan, Zheng } 61599c88e69SYan, Zheng i_size_write(inode, size); 616224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 617355da1ebSSage Weil ci->i_reported_size = size; 618355da1ebSSage Weil if (truncate_seq != ci->i_truncate_seq) { 619355da1ebSSage Weil dout("truncate_seq %u -> %u\n", 620355da1ebSSage Weil ci->i_truncate_seq, truncate_seq); 621355da1ebSSage Weil ci->i_truncate_seq = truncate_seq; 622b0d7c223SYan, Zheng 623b0d7c223SYan, Zheng /* the MDS should have revoked these caps */ 624b0d7c223SYan, Zheng WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | 625b0d7c223SYan, Zheng CEPH_CAP_FILE_RD | 626b0d7c223SYan, Zheng CEPH_CAP_FILE_WR | 627b0d7c223SYan, Zheng CEPH_CAP_FILE_LAZYIO)); 6283d497d85SYehuda Sadeh /* 6293d497d85SYehuda Sadeh * If we hold relevant caps, or in the case where we're 6303d497d85SYehuda Sadeh * not the only client referencing this file and we 6313d497d85SYehuda Sadeh * don't hold those caps, then we need to check whether 6323d497d85SYehuda Sadeh * the file is either opened or mmaped 6333d497d85SYehuda Sadeh */ 634b0d7c223SYan, Zheng if ((issued & (CEPH_CAP_FILE_CACHE| 635b0d7c223SYan, Zheng CEPH_CAP_FILE_BUFFER)) || 6363d497d85SYehuda Sadeh mapping_mapped(inode->i_mapping) || 6373d497d85SYehuda Sadeh __ceph_caps_file_wanted(ci)) { 638355da1ebSSage Weil ci->i_truncate_pending++; 639355da1ebSSage Weil queue_trunc = 1; 640355da1ebSSage Weil } 641355da1ebSSage Weil } 642355da1ebSSage Weil } 643355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && 644355da1ebSSage Weil ci->i_truncate_size != truncate_size) { 645355da1ebSSage Weil dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, 646355da1ebSSage Weil truncate_size); 647355da1ebSSage Weil ci->i_truncate_size = truncate_size; 648355da1ebSSage Weil } 64999ccbd22SMilosz Tanski 65099ccbd22SMilosz Tanski if (queue_trunc) 65199ccbd22SMilosz Tanski ceph_fscache_invalidate(inode); 65299ccbd22SMilosz Tanski 653355da1ebSSage Weil return queue_trunc; 654355da1ebSSage Weil } 655355da1ebSSage Weil 656355da1ebSSage Weil void ceph_fill_file_time(struct inode *inode, int issued, 6579bbeab41SArnd Bergmann u64 time_warp_seq, struct timespec64 *ctime, 6589bbeab41SArnd Bergmann struct timespec64 *mtime, struct timespec64 *atime) 659355da1ebSSage Weil { 660355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 661355da1ebSSage Weil int warn = 0; 662355da1ebSSage Weil 663355da1ebSSage Weil if (issued & (CEPH_CAP_FILE_EXCL| 664355da1ebSSage Weil CEPH_CAP_FILE_WR| 665d8672d64SSage Weil CEPH_CAP_FILE_BUFFER| 666d8672d64SSage Weil CEPH_CAP_AUTH_EXCL| 667d8672d64SSage Weil CEPH_CAP_XATTR_EXCL)) { 668ffdeec7aSYan, Zheng if (ci->i_version == 0 || 6699bbeab41SArnd Bergmann timespec64_compare(ctime, &inode->i_ctime) > 0) { 67013442b03SDeepa Dinamani dout("ctime %lld.%09ld -> %lld.%09ld inc w/ cap\n", 6719bbeab41SArnd Bergmann inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 6729bbeab41SArnd Bergmann ctime->tv_sec, ctime->tv_nsec); 6739bbeab41SArnd Bergmann inode->i_ctime = *ctime; 674355da1ebSSage Weil } 675ffdeec7aSYan, Zheng if (ci->i_version == 0 || 676ffdeec7aSYan, Zheng ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { 677355da1ebSSage Weil /* the MDS did a utimes() */ 67813442b03SDeepa Dinamani dout("mtime %lld.%09ld -> %lld.%09ld " 679355da1ebSSage Weil "tw %d -> %d\n", 6809bbeab41SArnd Bergmann inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 6819bbeab41SArnd Bergmann mtime->tv_sec, mtime->tv_nsec, 682355da1ebSSage Weil ci->i_time_warp_seq, (int)time_warp_seq); 683355da1ebSSage Weil 6849bbeab41SArnd Bergmann inode->i_mtime = *mtime; 6859bbeab41SArnd Bergmann inode->i_atime = *atime; 686355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 687355da1ebSSage Weil } else if (time_warp_seq == ci->i_time_warp_seq) { 688355da1ebSSage Weil /* nobody did utimes(); take the max */ 6899bbeab41SArnd Bergmann if (timespec64_compare(mtime, &inode->i_mtime) > 0) { 69013442b03SDeepa Dinamani dout("mtime %lld.%09ld -> %lld.%09ld inc\n", 6919bbeab41SArnd Bergmann inode->i_mtime.tv_sec, 692355da1ebSSage Weil inode->i_mtime.tv_nsec, 6939bbeab41SArnd Bergmann mtime->tv_sec, mtime->tv_nsec); 6949bbeab41SArnd Bergmann inode->i_mtime = *mtime; 695355da1ebSSage Weil } 6969bbeab41SArnd Bergmann if (timespec64_compare(atime, &inode->i_atime) > 0) { 69713442b03SDeepa Dinamani dout("atime %lld.%09ld -> %lld.%09ld inc\n", 6989bbeab41SArnd Bergmann inode->i_atime.tv_sec, 699355da1ebSSage Weil inode->i_atime.tv_nsec, 7009bbeab41SArnd Bergmann atime->tv_sec, atime->tv_nsec); 7019bbeab41SArnd Bergmann inode->i_atime = *atime; 702355da1ebSSage Weil } 703355da1ebSSage Weil } else if (issued & CEPH_CAP_FILE_EXCL) { 704355da1ebSSage Weil /* we did a utimes(); ignore mds values */ 705355da1ebSSage Weil } else { 706355da1ebSSage Weil warn = 1; 707355da1ebSSage Weil } 708355da1ebSSage Weil } else { 709d8672d64SSage Weil /* we have no write|excl caps; whatever the MDS says is true */ 710355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { 7119bbeab41SArnd Bergmann inode->i_ctime = *ctime; 7129bbeab41SArnd Bergmann inode->i_mtime = *mtime; 7139bbeab41SArnd Bergmann inode->i_atime = *atime; 714355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 715355da1ebSSage Weil } else { 716355da1ebSSage Weil warn = 1; 717355da1ebSSage Weil } 718355da1ebSSage Weil } 719355da1ebSSage Weil if (warn) /* time_warp_seq shouldn't go backwards */ 720355da1ebSSage Weil dout("%p mds time_warp_seq %llu < %u\n", 721355da1ebSSage Weil inode, time_warp_seq, ci->i_time_warp_seq); 722355da1ebSSage Weil } 723355da1ebSSage Weil 724355da1ebSSage Weil /* 725355da1ebSSage Weil * Populate an inode based on info from mds. May be called on new or 726355da1ebSSage Weil * existing inodes. 727355da1ebSSage Weil */ 72801deead0SYan, Zheng static int fill_inode(struct inode *inode, struct page *locked_page, 729355da1ebSSage Weil struct ceph_mds_reply_info_in *iinfo, 730355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo, 731355da1ebSSage Weil struct ceph_mds_session *session, 732355da1ebSSage Weil unsigned long ttl_from, int cap_fmode, 733355da1ebSSage Weil struct ceph_cap_reservation *caps_reservation) 734355da1ebSSage Weil { 735d9df2783SYan, Zheng struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; 736355da1ebSSage Weil struct ceph_mds_reply_inode *info = iinfo->in; 737355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 7382af54a72SYan, Zheng int issued, new_issued, info_caps; 7399bbeab41SArnd Bergmann struct timespec64 mtime, atime, ctime; 740355da1ebSSage Weil struct ceph_buffer *xattr_blob = NULL; 741af8a85a4SLuis Henriques struct ceph_buffer *old_blob = NULL; 742779fe0fbSYan, Zheng struct ceph_string *pool_ns = NULL; 743d9df2783SYan, Zheng struct ceph_cap *new_cap = NULL; 744355da1ebSSage Weil int err = 0; 745d9df2783SYan, Zheng bool wake = false; 746f98a128aSYan, Zheng bool queue_trunc = false; 747f98a128aSYan, Zheng bool new_version = false; 74831c542a1SYan, Zheng bool fill_inline = false; 749355da1ebSSage Weil 750355da1ebSSage Weil dout("fill_inode %p ino %llx.%llx v %llu had %llu\n", 751355da1ebSSage Weil inode, ceph_vinop(inode), le64_to_cpu(info->version), 752355da1ebSSage Weil ci->i_version); 753355da1ebSSage Weil 7542af54a72SYan, Zheng info_caps = le32_to_cpu(info->cap.caps); 7552af54a72SYan, Zheng 756d9df2783SYan, Zheng /* prealloc new cap struct */ 7572af54a72SYan, Zheng if (info_caps && ceph_snap(inode) == CEPH_NOSNAP) 758d9df2783SYan, Zheng new_cap = ceph_get_cap(mdsc, caps_reservation); 759d9df2783SYan, Zheng 760355da1ebSSage Weil /* 761355da1ebSSage Weil * prealloc xattr data, if it looks like we'll need it. only 762355da1ebSSage Weil * if len > 4 (meaning there are actually xattrs; the first 4 763355da1ebSSage Weil * bytes are the xattr count). 764355da1ebSSage Weil */ 765355da1ebSSage Weil if (iinfo->xattr_len > 4) { 766b6c1d5b8SSage Weil xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); 767355da1ebSSage Weil if (!xattr_blob) 768355da1ebSSage Weil pr_err("fill_inode ENOMEM xattr blob %d bytes\n", 769355da1ebSSage Weil iinfo->xattr_len); 770355da1ebSSage Weil } 771355da1ebSSage Weil 772779fe0fbSYan, Zheng if (iinfo->pool_ns_len > 0) 773779fe0fbSYan, Zheng pool_ns = ceph_find_or_create_string(iinfo->pool_ns_data, 774779fe0fbSYan, Zheng iinfo->pool_ns_len); 775779fe0fbSYan, Zheng 77675c9627eSYan, Zheng if (ceph_snap(inode) != CEPH_NOSNAP && !ci->i_snapid_map) 77775c9627eSYan, Zheng ci->i_snapid_map = ceph_get_snapid_map(mdsc, ceph_snap(inode)); 77875c9627eSYan, Zheng 779be655596SSage Weil spin_lock(&ci->i_ceph_lock); 780355da1ebSSage Weil 781355da1ebSSage Weil /* 782355da1ebSSage Weil * provided version will be odd if inode value is projected, 7838bd59e01SSage Weil * even if stable. skip the update if we have newer stable 7848bd59e01SSage Weil * info (ours>=theirs, e.g. due to racing mds replies), unless 7858bd59e01SSage Weil * we are getting projected (unstable) info (in which case the 7868bd59e01SSage Weil * version is odd, and we want ours>theirs). 7878bd59e01SSage Weil * us them 7888bd59e01SSage Weil * 2 2 skip 7898bd59e01SSage Weil * 3 2 skip 7908bd59e01SSage Weil * 3 3 update 791355da1ebSSage Weil */ 792f98a128aSYan, Zheng if (ci->i_version == 0 || 793f98a128aSYan, Zheng ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 794f98a128aSYan, Zheng le64_to_cpu(info->version) > (ci->i_version & ~1))) 795f98a128aSYan, Zheng new_version = true; 796355da1ebSSage Weil 797a35ead31SJeff Layton /* Update change_attribute */ 798a35ead31SJeff Layton inode_set_max_iversion_raw(inode, iinfo->change_attr); 799a35ead31SJeff Layton 8002af54a72SYan, Zheng __ceph_caps_issued(ci, &issued); 8012af54a72SYan, Zheng issued |= __ceph_caps_dirty(ci); 8022af54a72SYan, Zheng new_issued = ~issued & info_caps; 803355da1ebSSage Weil 804355da1ebSSage Weil /* update inode */ 805355da1ebSSage Weil inode->i_rdev = le32_to_cpu(info->rdev); 80675067034SLuis Henriques /* directories have fl_stripe_unit set to zero */ 80775067034SLuis Henriques if (le32_to_cpu(info->layout.fl_stripe_unit)) 80875067034SLuis Henriques inode->i_blkbits = 80975067034SLuis Henriques fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; 81075067034SLuis Henriques else 81175067034SLuis Henriques inode->i_blkbits = CEPH_BLOCK_SHIFT; 812355da1ebSSage Weil 813d557c48dSLuis Henriques __ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files); 814fb18a575SLuis Henriques 815f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && 816f98a128aSYan, Zheng (issued & CEPH_CAP_AUTH_EXCL) == 0) { 817355da1ebSSage Weil inode->i_mode = le32_to_cpu(info->mode); 818ab871b90SEric W. Biederman inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); 819ab871b90SEric W. Biederman inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); 820355da1ebSSage Weil dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, 821bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 822bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid)); 823245ce991SJeff Layton ceph_decode_timespec64(&ci->i_btime, &iinfo->btime); 824193e7b37SDavid Disseldorp ceph_decode_timespec64(&ci->i_snap_btime, &iinfo->snap_btime); 825355da1ebSSage Weil } 826355da1ebSSage Weil 827f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && 828f98a128aSYan, Zheng (issued & CEPH_CAP_LINK_EXCL) == 0) 829bfe86848SMiklos Szeredi set_nlink(inode, le32_to_cpu(info->nlink)); 830355da1ebSSage Weil 831f98a128aSYan, Zheng if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { 832355da1ebSSage Weil /* be careful with mtime, atime, size */ 8339bbeab41SArnd Bergmann ceph_decode_timespec64(&atime, &info->atime); 8349bbeab41SArnd Bergmann ceph_decode_timespec64(&mtime, &info->mtime); 8359bbeab41SArnd Bergmann ceph_decode_timespec64(&ctime, &info->ctime); 836f98a128aSYan, Zheng ceph_fill_file_time(inode, issued, 837f98a128aSYan, Zheng le32_to_cpu(info->time_warp_seq), 838f98a128aSYan, Zheng &ctime, &mtime, &atime); 839f98a128aSYan, Zheng } 840f98a128aSYan, Zheng 8412af54a72SYan, Zheng if (new_version || (info_caps & CEPH_CAP_FILE_SHARED)) { 8422af54a72SYan, Zheng ci->i_files = le64_to_cpu(info->files); 8432af54a72SYan, Zheng ci->i_subdirs = le64_to_cpu(info->subdirs); 8442af54a72SYan, Zheng } 8452af54a72SYan, Zheng 846f98a128aSYan, Zheng if (new_version || 847f98a128aSYan, Zheng (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { 8487627151eSYan, Zheng s64 old_pool = ci->i_layout.pool_id; 849779fe0fbSYan, Zheng struct ceph_string *old_ns; 850779fe0fbSYan, Zheng 8517627151eSYan, Zheng ceph_file_layout_from_legacy(&ci->i_layout, &info->layout); 852779fe0fbSYan, Zheng old_ns = rcu_dereference_protected(ci->i_layout.pool_ns, 853779fe0fbSYan, Zheng lockdep_is_held(&ci->i_ceph_lock)); 854779fe0fbSYan, Zheng rcu_assign_pointer(ci->i_layout.pool_ns, pool_ns); 855779fe0fbSYan, Zheng 856779fe0fbSYan, Zheng if (ci->i_layout.pool_id != old_pool || pool_ns != old_ns) 85710183a69SYan, Zheng ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; 85810183a69SYan, Zheng 859779fe0fbSYan, Zheng pool_ns = old_ns; 860f98a128aSYan, Zheng 861355da1ebSSage Weil queue_trunc = ceph_fill_file_size(inode, issued, 862355da1ebSSage Weil le32_to_cpu(info->truncate_seq), 863355da1ebSSage Weil le64_to_cpu(info->truncate_size), 864355da1ebSSage Weil le64_to_cpu(info->size)); 865f98a128aSYan, Zheng /* only update max_size on auth cap */ 866f98a128aSYan, Zheng if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 867f98a128aSYan, Zheng ci->i_max_size != le64_to_cpu(info->max_size)) { 868f98a128aSYan, Zheng dout("max_size %lld -> %llu\n", ci->i_max_size, 869f98a128aSYan, Zheng le64_to_cpu(info->max_size)); 870f98a128aSYan, Zheng ci->i_max_size = le64_to_cpu(info->max_size); 871f98a128aSYan, Zheng } 872f98a128aSYan, Zheng } 873355da1ebSSage Weil 87449a9f4f6SYan, Zheng /* layout and rstat are not tracked by capability, update them if 87549a9f4f6SYan, Zheng * the inode info is from auth mds */ 87649a9f4f6SYan, Zheng if (new_version || (info->cap.flags & CEPH_CAP_FLAG_AUTH)) { 87749a9f4f6SYan, Zheng if (S_ISDIR(inode->i_mode)) { 87849a9f4f6SYan, Zheng ci->i_dir_layout = iinfo->dir_layout; 87949a9f4f6SYan, Zheng ci->i_rbytes = le64_to_cpu(info->rbytes); 88049a9f4f6SYan, Zheng ci->i_rfiles = le64_to_cpu(info->rfiles); 88149a9f4f6SYan, Zheng ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); 88208796873SYan, Zheng ci->i_dir_pin = iinfo->dir_pin; 8839bbeab41SArnd Bergmann ceph_decode_timespec64(&ci->i_rctime, &info->rctime); 88449a9f4f6SYan, Zheng } 88549a9f4f6SYan, Zheng } 88649a9f4f6SYan, Zheng 887355da1ebSSage Weil /* xattrs */ 888355da1ebSSage Weil /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ 889508b32d8SYan, Zheng if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && 890355da1ebSSage Weil le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { 891355da1ebSSage Weil if (ci->i_xattrs.blob) 892af8a85a4SLuis Henriques old_blob = ci->i_xattrs.blob; 893355da1ebSSage Weil ci->i_xattrs.blob = xattr_blob; 894355da1ebSSage Weil if (xattr_blob) 895355da1ebSSage Weil memcpy(ci->i_xattrs.blob->vec.iov_base, 896355da1ebSSage Weil iinfo->xattr_data, iinfo->xattr_len); 897355da1ebSSage Weil ci->i_xattrs.version = le64_to_cpu(info->xattr_version); 8987221fe4cSGuangliang Zhao ceph_forget_all_cached_acls(inode); 899ac6713ccSYan, Zheng ceph_security_invalidate_secctx(inode); 900a6424e48SSage Weil xattr_blob = NULL; 901355da1ebSSage Weil } 902355da1ebSSage Weil 903ffdeec7aSYan, Zheng /* finally update i_version */ 904aae1a442SYan, Zheng if (le64_to_cpu(info->version) > ci->i_version) 905ffdeec7aSYan, Zheng ci->i_version = le64_to_cpu(info->version); 906ffdeec7aSYan, Zheng 907355da1ebSSage Weil inode->i_mapping->a_ops = &ceph_aops; 908355da1ebSSage Weil 909355da1ebSSage Weil switch (inode->i_mode & S_IFMT) { 910355da1ebSSage Weil case S_IFIFO: 911355da1ebSSage Weil case S_IFBLK: 912355da1ebSSage Weil case S_IFCHR: 913355da1ebSSage Weil case S_IFSOCK: 9145ba72e60SYan, Zheng inode->i_blkbits = PAGE_SHIFT; 915355da1ebSSage Weil init_special_inode(inode, inode->i_mode, inode->i_rdev); 916355da1ebSSage Weil inode->i_op = &ceph_file_iops; 917355da1ebSSage Weil break; 918355da1ebSSage Weil case S_IFREG: 919355da1ebSSage Weil inode->i_op = &ceph_file_iops; 920355da1ebSSage Weil inode->i_fop = &ceph_file_fops; 921355da1ebSSage Weil break; 922355da1ebSSage Weil case S_IFLNK: 923355da1ebSSage Weil inode->i_op = &ceph_symlink_iops; 924355da1ebSSage Weil if (!ci->i_symlink) { 925810339ecSXi Wang u32 symlen = iinfo->symlink_len; 926355da1ebSSage Weil char *sym; 927355da1ebSSage Weil 928be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 929355da1ebSSage Weil 930224a7542SYan, Zheng if (symlen != i_size_read(inode)) { 931224a7542SYan, Zheng pr_err("fill_inode %llx.%llx BAD symlink " 932224a7542SYan, Zheng "size %lld\n", ceph_vinop(inode), 933224a7542SYan, Zheng i_size_read(inode)); 934224a7542SYan, Zheng i_size_write(inode, symlen); 935224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(symlen); 936224a7542SYan, Zheng } 937810339ecSXi Wang 938355da1ebSSage Weil err = -ENOMEM; 939810339ecSXi Wang sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); 940355da1ebSSage Weil if (!sym) 941355da1ebSSage Weil goto out; 942355da1ebSSage Weil 943be655596SSage Weil spin_lock(&ci->i_ceph_lock); 944355da1ebSSage Weil if (!ci->i_symlink) 945355da1ebSSage Weil ci->i_symlink = sym; 946355da1ebSSage Weil else 947355da1ebSSage Weil kfree(sym); /* lost a race */ 948355da1ebSSage Weil } 949ac194dccSAl Viro inode->i_link = ci->i_symlink; 950355da1ebSSage Weil break; 951355da1ebSSage Weil case S_IFDIR: 952355da1ebSSage Weil inode->i_op = &ceph_dir_iops; 953355da1ebSSage Weil inode->i_fop = &ceph_dir_fops; 954355da1ebSSage Weil break; 955355da1ebSSage Weil default: 956355da1ebSSage Weil pr_err("fill_inode %llx.%llx BAD mode 0%o\n", 957355da1ebSSage Weil ceph_vinop(inode), inode->i_mode); 958355da1ebSSage Weil } 959355da1ebSSage Weil 960355da1ebSSage Weil /* were we issued a capability? */ 9612af54a72SYan, Zheng if (info_caps) { 962355da1ebSSage Weil if (ceph_snap(inode) == CEPH_NOSNAP) { 963355da1ebSSage Weil ceph_add_cap(inode, session, 964355da1ebSSage Weil le64_to_cpu(info->cap.cap_id), 9652af54a72SYan, Zheng cap_fmode, info_caps, 966355da1ebSSage Weil le32_to_cpu(info->cap.wanted), 967355da1ebSSage Weil le32_to_cpu(info->cap.seq), 968355da1ebSSage Weil le32_to_cpu(info->cap.mseq), 969355da1ebSSage Weil le64_to_cpu(info->cap.realm), 970d9df2783SYan, Zheng info->cap.flags, &new_cap); 9712f92b3d0SYan, Zheng 9722f92b3d0SYan, Zheng /* set dir completion flag? */ 9732f92b3d0SYan, Zheng if (S_ISDIR(inode->i_mode) && 9742f92b3d0SYan, Zheng ci->i_files == 0 && ci->i_subdirs == 0 && 9752af54a72SYan, Zheng (info_caps & CEPH_CAP_FILE_SHARED) && 9762f92b3d0SYan, Zheng (issued & CEPH_CAP_FILE_EXCL) == 0 && 9772f92b3d0SYan, Zheng !__ceph_dir_is_complete(ci)) { 9782f92b3d0SYan, Zheng dout(" marking %p complete (empty)\n", inode); 979fdd4e158SYan, Zheng i_size_write(inode, 0); 9802f92b3d0SYan, Zheng __ceph_dir_set_complete(ci, 981fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count), 982fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count)); 9832f92b3d0SYan, Zheng } 9842f92b3d0SYan, Zheng 985d9df2783SYan, Zheng wake = true; 986355da1ebSSage Weil } else { 987355da1ebSSage Weil dout(" %p got snap_caps %s\n", inode, 9882af54a72SYan, Zheng ceph_cap_string(info_caps)); 9892af54a72SYan, Zheng ci->i_snap_caps |= info_caps; 990355da1ebSSage Weil if (cap_fmode >= 0) 991355da1ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 992355da1ebSSage Weil } 99304d000ebSSage Weil } else if (cap_fmode >= 0) { 994f3ae1b97SFabian Frederick pr_warn("mds issued no caps on %llx.%llx\n", 99504d000ebSSage Weil ceph_vinop(inode)); 99604d000ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 997355da1ebSSage Weil } 99831c542a1SYan, Zheng 99931c542a1SYan, Zheng if (iinfo->inline_version > 0 && 100031c542a1SYan, Zheng iinfo->inline_version >= ci->i_inline_version) { 100131c542a1SYan, Zheng int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; 100231c542a1SYan, Zheng ci->i_inline_version = iinfo->inline_version; 100331c542a1SYan, Zheng if (ci->i_inline_version != CEPH_INLINE_NONE && 10042af54a72SYan, Zheng (locked_page || (info_caps & cache_caps))) 100531c542a1SYan, Zheng fill_inline = true; 100631c542a1SYan, Zheng } 100731c542a1SYan, Zheng 1008355da1ebSSage Weil spin_unlock(&ci->i_ceph_lock); 1009355da1ebSSage Weil 101031c542a1SYan, Zheng if (fill_inline) 101101deead0SYan, Zheng ceph_fill_inline_data(inode, locked_page, 101231c542a1SYan, Zheng iinfo->inline_data, iinfo->inline_len); 101331c542a1SYan, Zheng 1014d9df2783SYan, Zheng if (wake) 1015d9df2783SYan, Zheng wake_up_all(&ci->i_cap_wq); 1016d9df2783SYan, Zheng 1017355da1ebSSage Weil /* queue truncate if we saw i_size decrease */ 1018355da1ebSSage Weil if (queue_trunc) 1019355da1ebSSage Weil ceph_queue_vmtruncate(inode); 1020355da1ebSSage Weil 1021355da1ebSSage Weil /* populate frag tree */ 10223e7fbe9cSYan, Zheng if (S_ISDIR(inode->i_mode)) 10233e7fbe9cSYan, Zheng ceph_fill_fragtree(inode, &info->fragtree, dirinfo); 1024355da1ebSSage Weil 1025355da1ebSSage Weil /* update delegation info? */ 1026355da1ebSSage Weil if (dirinfo) 1027355da1ebSSage Weil ceph_fill_dirfrag(inode, dirinfo); 1028355da1ebSSage Weil 1029355da1ebSSage Weil err = 0; 1030355da1ebSSage Weil out: 1031d9df2783SYan, Zheng if (new_cap) 1032d9df2783SYan, Zheng ceph_put_cap(mdsc, new_cap); 1033af8a85a4SLuis Henriques ceph_buffer_put(old_blob); 1034355da1ebSSage Weil ceph_buffer_put(xattr_blob); 1035779fe0fbSYan, Zheng ceph_put_string(pool_ns); 1036355da1ebSSage Weil return err; 1037355da1ebSSage Weil } 1038355da1ebSSage Weil 1039355da1ebSSage Weil /* 1040543212b3SYan, Zheng * caller should hold session s_mutex and dentry->d_lock. 1041355da1ebSSage Weil */ 1042543212b3SYan, Zheng static void __update_dentry_lease(struct inode *dir, struct dentry *dentry, 1043355da1ebSSage Weil struct ceph_mds_reply_lease *lease, 1044355da1ebSSage Weil struct ceph_mds_session *session, 1045f5d55f03SJeff Layton unsigned long from_time, 1046543212b3SYan, Zheng struct ceph_mds_session **old_lease_session) 1047355da1ebSSage Weil { 1048355da1ebSSage Weil struct ceph_dentry_info *di = ceph_dentry(dentry); 1049355da1ebSSage Weil long unsigned duration = le32_to_cpu(lease->duration_ms); 1050355da1ebSSage Weil long unsigned ttl = from_time + (duration * HZ) / 1000; 1051355da1ebSSage Weil long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; 1052355da1ebSSage Weil 10532f90b852SSage Weil dout("update_dentry_lease %p duration %lu ms ttl %lu\n", 10542f90b852SSage Weil dentry, duration, ttl); 1055355da1ebSSage Weil 105618fc8abdSAl Viro /* only track leases on regular dentries */ 105718fc8abdSAl Viro if (ceph_snap(dir) != CEPH_NOSNAP) 1058543212b3SYan, Zheng return; 105918fc8abdSAl Viro 106097aeb6bfSYan, Zheng di->lease_shared_gen = atomic_read(&ceph_inode(dir)->i_shared_gen); 106137c4efc1SYan, Zheng if (duration == 0) { 106237c4efc1SYan, Zheng __ceph_dentry_dir_lease_touch(di); 1063543212b3SYan, Zheng return; 106437c4efc1SYan, Zheng } 1065355da1ebSSage Weil 1066355da1ebSSage Weil if (di->lease_gen == session->s_cap_gen && 10679b16f03cSMiklos Szeredi time_before(ttl, di->time)) 1068543212b3SYan, Zheng return; /* we already have a newer lease. */ 1069355da1ebSSage Weil 1070481f001fSYan, Zheng if (di->lease_session && di->lease_session != session) { 1071543212b3SYan, Zheng *old_lease_session = di->lease_session; 1072481f001fSYan, Zheng di->lease_session = NULL; 1073481f001fSYan, Zheng } 1074355da1ebSSage Weil 1075355da1ebSSage Weil if (!di->lease_session) 1076355da1ebSSage Weil di->lease_session = ceph_get_mds_session(session); 1077355da1ebSSage Weil di->lease_gen = session->s_cap_gen; 1078355da1ebSSage Weil di->lease_seq = le32_to_cpu(lease->seq); 1079355da1ebSSage Weil di->lease_renew_after = half_ttl; 1080355da1ebSSage Weil di->lease_renew_from = 0; 10819b16f03cSMiklos Szeredi di->time = ttl; 108237c4efc1SYan, Zheng 108337c4efc1SYan, Zheng __ceph_dentry_lease_touch(di); 1084543212b3SYan, Zheng } 1085543212b3SYan, Zheng 1086543212b3SYan, Zheng static inline void update_dentry_lease(struct inode *dir, struct dentry *dentry, 1087543212b3SYan, Zheng struct ceph_mds_reply_lease *lease, 1088543212b3SYan, Zheng struct ceph_mds_session *session, 1089543212b3SYan, Zheng unsigned long from_time) 1090543212b3SYan, Zheng { 1091543212b3SYan, Zheng struct ceph_mds_session *old_lease_session = NULL; 1092543212b3SYan, Zheng spin_lock(&dentry->d_lock); 1093543212b3SYan, Zheng __update_dentry_lease(dir, dentry, lease, session, from_time, 1094543212b3SYan, Zheng &old_lease_session); 1095543212b3SYan, Zheng spin_unlock(&dentry->d_lock); 1096543212b3SYan, Zheng if (old_lease_session) 1097543212b3SYan, Zheng ceph_put_mds_session(old_lease_session); 1098543212b3SYan, Zheng } 1099543212b3SYan, Zheng 1100543212b3SYan, Zheng /* 1101543212b3SYan, Zheng * update dentry lease without having parent inode locked 1102543212b3SYan, Zheng */ 1103543212b3SYan, Zheng static void update_dentry_lease_careful(struct dentry *dentry, 1104543212b3SYan, Zheng struct ceph_mds_reply_lease *lease, 1105543212b3SYan, Zheng struct ceph_mds_session *session, 1106543212b3SYan, Zheng unsigned long from_time, 1107543212b3SYan, Zheng char *dname, u32 dname_len, 1108543212b3SYan, Zheng struct ceph_vino *pdvino, 1109543212b3SYan, Zheng struct ceph_vino *ptvino) 1110543212b3SYan, Zheng 1111543212b3SYan, Zheng { 1112543212b3SYan, Zheng struct inode *dir; 1113543212b3SYan, Zheng struct ceph_mds_session *old_lease_session = NULL; 1114543212b3SYan, Zheng 1115543212b3SYan, Zheng spin_lock(&dentry->d_lock); 1116543212b3SYan, Zheng /* make sure dentry's name matches target */ 1117543212b3SYan, Zheng if (dentry->d_name.len != dname_len || 1118543212b3SYan, Zheng memcmp(dentry->d_name.name, dname, dname_len)) 1119543212b3SYan, Zheng goto out_unlock; 1120543212b3SYan, Zheng 1121543212b3SYan, Zheng dir = d_inode(dentry->d_parent); 1122543212b3SYan, Zheng /* make sure parent matches dvino */ 1123543212b3SYan, Zheng if (!ceph_ino_compare(dir, pdvino)) 1124543212b3SYan, Zheng goto out_unlock; 1125543212b3SYan, Zheng 1126543212b3SYan, Zheng /* make sure dentry's inode matches target. NULL ptvino means that 1127543212b3SYan, Zheng * we expect a negative dentry */ 1128543212b3SYan, Zheng if (ptvino) { 1129543212b3SYan, Zheng if (d_really_is_negative(dentry)) 1130543212b3SYan, Zheng goto out_unlock; 1131543212b3SYan, Zheng if (!ceph_ino_compare(d_inode(dentry), ptvino)) 1132543212b3SYan, Zheng goto out_unlock; 1133543212b3SYan, Zheng } else { 1134543212b3SYan, Zheng if (d_really_is_positive(dentry)) 1135543212b3SYan, Zheng goto out_unlock; 1136543212b3SYan, Zheng } 1137543212b3SYan, Zheng 1138543212b3SYan, Zheng __update_dentry_lease(dir, dentry, lease, session, 1139543212b3SYan, Zheng from_time, &old_lease_session); 1140355da1ebSSage Weil out_unlock: 1141355da1ebSSage Weil spin_unlock(&dentry->d_lock); 1142481f001fSYan, Zheng if (old_lease_session) 1143481f001fSYan, Zheng ceph_put_mds_session(old_lease_session); 1144355da1ebSSage Weil } 1145355da1ebSSage Weil 1146355da1ebSSage Weil /* 11471cd3935bSSage Weil * splice a dentry to an inode. 11481cd3935bSSage Weil * caller must hold directory i_mutex for this to be safe. 11491cd3935bSSage Weil */ 11502bf996acSYan, Zheng static int splice_dentry(struct dentry **pdn, struct inode *in) 11511cd3935bSSage Weil { 11522bf996acSYan, Zheng struct dentry *dn = *pdn; 11531cd3935bSSage Weil struct dentry *realdn; 11541cd3935bSSage Weil 11552b0143b5SDavid Howells BUG_ON(d_inode(dn)); 11561cd3935bSSage Weil 11575495c2d0SYan, Zheng if (S_ISDIR(in->i_mode)) { 11585495c2d0SYan, Zheng /* If inode is directory, d_splice_alias() below will remove 11595495c2d0SYan, Zheng * 'realdn' from its origin parent. We need to ensure that 11605495c2d0SYan, Zheng * origin parent's readdir cache will not reference 'realdn' 11615495c2d0SYan, Zheng */ 11625495c2d0SYan, Zheng realdn = d_find_any_alias(in); 11635495c2d0SYan, Zheng if (realdn) { 11645495c2d0SYan, Zheng struct ceph_dentry_info *di = ceph_dentry(realdn); 11655495c2d0SYan, Zheng spin_lock(&realdn->d_lock); 11665495c2d0SYan, Zheng 11675495c2d0SYan, Zheng realdn->d_op->d_prune(realdn); 11685495c2d0SYan, Zheng 11695495c2d0SYan, Zheng di->time = jiffies; 11705495c2d0SYan, Zheng di->lease_shared_gen = 0; 11715495c2d0SYan, Zheng di->offset = 0; 11725495c2d0SYan, Zheng 11735495c2d0SYan, Zheng spin_unlock(&realdn->d_lock); 11745495c2d0SYan, Zheng dput(realdn); 11755495c2d0SYan, Zheng } 11765495c2d0SYan, Zheng } 11775495c2d0SYan, Zheng 11781cd3935bSSage Weil /* dn must be unhashed */ 11791cd3935bSSage Weil if (!d_unhashed(dn)) 11801cd3935bSSage Weil d_drop(dn); 118141d28bcaSAl Viro realdn = d_splice_alias(in, dn); 11821cd3935bSSage Weil if (IS_ERR(realdn)) { 1183d69ed05aSSage Weil pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", 1184d69ed05aSSage Weil PTR_ERR(realdn), dn, in, ceph_vinop(in)); 11852bf996acSYan, Zheng return PTR_ERR(realdn); 11862bf996acSYan, Zheng } 11872bf996acSYan, Zheng 11882bf996acSYan, Zheng if (realdn) { 11891cd3935bSSage Weil dout("dn %p (%d) spliced with %p (%d) " 11901cd3935bSSage Weil "inode %p ino %llx.%llx\n", 119184d08fa8SAl Viro dn, d_count(dn), 119284d08fa8SAl Viro realdn, d_count(realdn), 11932b0143b5SDavid Howells d_inode(realdn), ceph_vinop(d_inode(realdn))); 11941cd3935bSSage Weil dput(dn); 11952bf996acSYan, Zheng *pdn = realdn; 11961cd3935bSSage Weil } else { 11971cd3935bSSage Weil BUG_ON(!ceph_dentry(dn)); 11981cd3935bSSage Weil dout("dn %p attached to %p ino %llx.%llx\n", 11992b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn))); 12001cd3935bSSage Weil } 12012bf996acSYan, Zheng return 0; 12021cd3935bSSage Weil } 12031cd3935bSSage Weil 12041cd3935bSSage Weil /* 1205355da1ebSSage Weil * Incorporate results into the local cache. This is either just 1206355da1ebSSage Weil * one inode, or a directory, dentry, and possibly linked-to inode (e.g., 1207355da1ebSSage Weil * after a lookup). 1208355da1ebSSage Weil * 1209355da1ebSSage Weil * A reply may contain 1210355da1ebSSage Weil * a directory inode along with a dentry. 1211355da1ebSSage Weil * and/or a target inode 1212355da1ebSSage Weil * 1213355da1ebSSage Weil * Called with snap_rwsem (read). 1214355da1ebSSage Weil */ 1215f5a03b08SJeff Layton int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req) 1216355da1ebSSage Weil { 1217f5a03b08SJeff Layton struct ceph_mds_session *session = req->r_session; 1218355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1219355da1ebSSage Weil struct inode *in = NULL; 1220f5d55f03SJeff Layton struct ceph_vino tvino, dvino; 12213d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(sb); 1222355da1ebSSage Weil int err = 0; 1223355da1ebSSage Weil 1224355da1ebSSage Weil dout("fill_trace %p is_dentry %d is_target %d\n", req, 1225355da1ebSSage Weil rinfo->head->is_dentry, rinfo->head->is_target); 1226355da1ebSSage Weil 1227355da1ebSSage Weil if (!rinfo->head->is_target && !rinfo->head->is_dentry) { 1228355da1ebSSage Weil dout("fill_trace reply is empty!\n"); 12293dd69aabSJeff Layton if (rinfo->head->result == 0 && req->r_parent) 1230167c9e35SSage Weil ceph_invalidate_dir_request(req); 1231355da1ebSSage Weil return 0; 1232355da1ebSSage Weil } 1233355da1ebSSage Weil 1234355da1ebSSage Weil if (rinfo->head->is_dentry) { 12353dd69aabSJeff Layton struct inode *dir = req->r_parent; 12365b1daecdSSage Weil 12376c5e50faSSage Weil if (dir) { 123801deead0SYan, Zheng err = fill_inode(dir, NULL, 123901deead0SYan, Zheng &rinfo->diri, rinfo->dirfrag, 12405b1daecdSSage Weil session, req->r_request_started, -1, 12415b1daecdSSage Weil &req->r_caps_reservation); 12425b1daecdSSage Weil if (err < 0) 124319913b4eSYan, Zheng goto done; 12446c5e50faSSage Weil } else { 12456c5e50faSSage Weil WARN_ON_ONCE(1); 12466c5e50faSSage Weil } 124719913b4eSYan, Zheng 124874c9e6bfSYan, Zheng if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME && 124974c9e6bfSYan, Zheng test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 125074c9e6bfSYan, Zheng !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { 125119913b4eSYan, Zheng struct qstr dname; 125219913b4eSYan, Zheng struct dentry *dn, *parent; 125319913b4eSYan, Zheng 125419913b4eSYan, Zheng BUG_ON(!rinfo->head->is_target); 125519913b4eSYan, Zheng BUG_ON(req->r_dentry); 125619913b4eSYan, Zheng 125719913b4eSYan, Zheng parent = d_find_any_alias(dir); 125819913b4eSYan, Zheng BUG_ON(!parent); 125919913b4eSYan, Zheng 126019913b4eSYan, Zheng dname.name = rinfo->dname; 126119913b4eSYan, Zheng dname.len = rinfo->dname_len; 12628387ff25SLinus Torvalds dname.hash = full_name_hash(parent, dname.name, dname.len); 1263f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1264f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 126519913b4eSYan, Zheng retry_lookup: 126619913b4eSYan, Zheng dn = d_lookup(parent, &dname); 126719913b4eSYan, Zheng dout("d_lookup on parent=%p name=%.*s got %p\n", 126819913b4eSYan, Zheng parent, dname.len, dname.name, dn); 126919913b4eSYan, Zheng 127019913b4eSYan, Zheng if (!dn) { 127119913b4eSYan, Zheng dn = d_alloc(parent, &dname); 127219913b4eSYan, Zheng dout("d_alloc %p '%.*s' = %p\n", parent, 127319913b4eSYan, Zheng dname.len, dname.name, dn); 1274d37b1d99SMarkus Elfring if (!dn) { 127519913b4eSYan, Zheng dput(parent); 127619913b4eSYan, Zheng err = -ENOMEM; 127719913b4eSYan, Zheng goto done; 127819913b4eSYan, Zheng } 1279ad5cb123SAl Viro err = 0; 12802b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 1281f5d55f03SJeff Layton (ceph_ino(d_inode(dn)) != tvino.ino || 1282f5d55f03SJeff Layton ceph_snap(d_inode(dn)) != tvino.snap)) { 128319913b4eSYan, Zheng dout(" dn %p points to wrong inode %p\n", 12842b0143b5SDavid Howells dn, d_inode(dn)); 1285933ad2c9SYan, Zheng ceph_dir_clear_ordered(dir); 128619913b4eSYan, Zheng d_delete(dn); 128719913b4eSYan, Zheng dput(dn); 128819913b4eSYan, Zheng goto retry_lookup; 128919913b4eSYan, Zheng } 129019913b4eSYan, Zheng 129119913b4eSYan, Zheng req->r_dentry = dn; 129219913b4eSYan, Zheng dput(parent); 129319913b4eSYan, Zheng } 12945b1daecdSSage Weil } 12955b1daecdSSage Weil 129686b58d13SYan, Zheng if (rinfo->head->is_target) { 1297f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1298f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 129986b58d13SYan, Zheng 1300f5d55f03SJeff Layton in = ceph_get_inode(sb, tvino); 130186b58d13SYan, Zheng if (IS_ERR(in)) { 130286b58d13SYan, Zheng err = PTR_ERR(in); 130386b58d13SYan, Zheng goto done; 130486b58d13SYan, Zheng } 130586b58d13SYan, Zheng req->r_target_inode = in; 130686b58d13SYan, Zheng 130701deead0SYan, Zheng err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL, 130886b58d13SYan, Zheng session, req->r_request_started, 1309bc2de10dSJeff Layton (!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && 1310bc2de10dSJeff Layton rinfo->head->result == 0) ? req->r_fmode : -1, 131186b58d13SYan, Zheng &req->r_caps_reservation); 131286b58d13SYan, Zheng if (err < 0) { 131386b58d13SYan, Zheng pr_err("fill_inode badness %p %llx.%llx\n", 131486b58d13SYan, Zheng in, ceph_vinop(in)); 131586b58d13SYan, Zheng goto done; 131686b58d13SYan, Zheng } 131786b58d13SYan, Zheng } 131886b58d13SYan, Zheng 13199358c6d4SSage Weil /* 13209358c6d4SSage Weil * ignore null lease/binding on snapdir ENOENT, or else we 13219358c6d4SSage Weil * will have trouble splicing in the virtual snapdir later 13229358c6d4SSage Weil */ 13233dd69aabSJeff Layton if (rinfo->head->is_dentry && 1324bc2de10dSJeff Layton !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && 13253dd69aabSJeff Layton test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 13269358c6d4SSage Weil (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, 13273d14c5d2SYehuda Sadeh fsc->mount_options->snapdir_name, 13289358c6d4SSage Weil req->r_dentry->d_name.len))) { 1329355da1ebSSage Weil /* 1330355da1ebSSage Weil * lookup link rename : null -> possibly existing inode 1331355da1ebSSage Weil * mknod symlink mkdir : null -> new inode 1332355da1ebSSage Weil * unlink : linked -> null 1333355da1ebSSage Weil */ 13343dd69aabSJeff Layton struct inode *dir = req->r_parent; 1335355da1ebSSage Weil struct dentry *dn = req->r_dentry; 1336355da1ebSSage Weil bool have_dir_cap, have_lease; 1337355da1ebSSage Weil 1338355da1ebSSage Weil BUG_ON(!dn); 1339355da1ebSSage Weil BUG_ON(!dir); 13402b0143b5SDavid Howells BUG_ON(d_inode(dn->d_parent) != dir); 1341f5d55f03SJeff Layton 1342f5d55f03SJeff Layton dvino.ino = le64_to_cpu(rinfo->diri.in->ino); 1343f5d55f03SJeff Layton dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); 1344f5d55f03SJeff Layton 1345f5d55f03SJeff Layton BUG_ON(ceph_ino(dir) != dvino.ino); 1346f5d55f03SJeff Layton BUG_ON(ceph_snap(dir) != dvino.snap); 1347355da1ebSSage Weil 1348355da1ebSSage Weil /* do we have a lease on the whole dir? */ 1349355da1ebSSage Weil have_dir_cap = 1350355da1ebSSage Weil (le32_to_cpu(rinfo->diri.in->cap.caps) & 1351355da1ebSSage Weil CEPH_CAP_FILE_SHARED); 1352355da1ebSSage Weil 1353355da1ebSSage Weil /* do we have a dn lease? */ 1354355da1ebSSage Weil have_lease = have_dir_cap || 13552f90b852SSage Weil le32_to_cpu(rinfo->dlease->duration_ms); 1356355da1ebSSage Weil if (!have_lease) 1357355da1ebSSage Weil dout("fill_trace no dentry lease or dir cap\n"); 1358355da1ebSSage Weil 1359355da1ebSSage Weil /* rename? */ 1360355da1ebSSage Weil if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { 13610a8a70f9SYan, Zheng struct inode *olddir = req->r_old_dentry_dir; 13620a8a70f9SYan, Zheng BUG_ON(!olddir); 13630a8a70f9SYan, Zheng 1364a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1365355da1ebSSage Weil req->r_old_dentry, 1366a455589fSAl Viro req->r_old_dentry, 1367a455589fSAl Viro dn, dn); 1368355da1ebSSage Weil dout("fill_trace doing d_move %p -> %p\n", 1369355da1ebSSage Weil req->r_old_dentry, dn); 1370c10f5e12SSage Weil 1371fdd4e158SYan, Zheng /* d_move screws up sibling dentries' offsets */ 1372fdd4e158SYan, Zheng ceph_dir_clear_ordered(dir); 1373fdd4e158SYan, Zheng ceph_dir_clear_ordered(olddir); 1374fdd4e158SYan, Zheng 1375355da1ebSSage Weil d_move(req->r_old_dentry, dn); 1376a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1377355da1ebSSage Weil req->r_old_dentry, 1378a455589fSAl Viro req->r_old_dentry, 1379a455589fSAl Viro dn, dn); 138081a6cf2dSSage Weil 1381c4a29f26SSage Weil /* ensure target dentry is invalidated, despite 1382c4a29f26SSage Weil rehashing bug in vfs_rename_dir */ 138381a6cf2dSSage Weil ceph_invalidate_dentry_lease(dn); 138481a6cf2dSSage Weil 138509adc80cSSage Weil dout("dn %p gets new offset %lld\n", req->r_old_dentry, 13861cd3935bSSage Weil ceph_dentry(req->r_old_dentry)->offset); 138781a6cf2dSSage Weil 13882bf996acSYan, Zheng /* swap r_dentry and r_old_dentry in case that 13892bf996acSYan, Zheng * splice_dentry() gets called later. This is safe 13902bf996acSYan, Zheng * because no other place will use them */ 13912bf996acSYan, Zheng req->r_dentry = req->r_old_dentry; 13922bf996acSYan, Zheng req->r_old_dentry = dn; 13932bf996acSYan, Zheng dn = req->r_dentry; 1394355da1ebSSage Weil } 1395355da1ebSSage Weil 1396355da1ebSSage Weil /* null dentry? */ 1397355da1ebSSage Weil if (!rinfo->head->is_target) { 1398355da1ebSSage Weil dout("fill_trace null dentry\n"); 13992b0143b5SDavid Howells if (d_really_is_positive(dn)) { 1400355da1ebSSage Weil dout("d_delete %p\n", dn); 14015495c2d0SYan, Zheng ceph_dir_clear_ordered(dir); 1402355da1ebSSage Weil d_delete(dn); 140380d025ffSJeff Layton } else if (have_lease) { 140480d025ffSJeff Layton if (d_unhashed(dn)) 1405f8b31710SAl Viro d_add(dn, NULL); 1406543212b3SYan, Zheng update_dentry_lease(dir, dn, 1407543212b3SYan, Zheng rinfo->dlease, session, 1408543212b3SYan, Zheng req->r_request_started); 1409355da1ebSSage Weil } 1410355da1ebSSage Weil goto done; 1411355da1ebSSage Weil } 1412355da1ebSSage Weil 1413355da1ebSSage Weil /* attach proper inode */ 14142b0143b5SDavid Howells if (d_really_is_negative(dn)) { 141570db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 141686b58d13SYan, Zheng ihold(in); 14172bf996acSYan, Zheng err = splice_dentry(&req->r_dentry, in); 14182bf996acSYan, Zheng if (err < 0) 1419355da1ebSSage Weil goto done; 14202bf996acSYan, Zheng dn = req->r_dentry; /* may have spliced */ 14212b0143b5SDavid Howells } else if (d_really_is_positive(dn) && d_inode(dn) != in) { 1422355da1ebSSage Weil dout(" %p links to %p %llx.%llx, not %llx.%llx\n", 14232b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn)), 142486b58d13SYan, Zheng ceph_vinop(in)); 1425200fd27cSYan, Zheng d_invalidate(dn); 1426355da1ebSSage Weil have_lease = false; 1427355da1ebSSage Weil } 1428355da1ebSSage Weil 1429f5d55f03SJeff Layton if (have_lease) { 1430543212b3SYan, Zheng update_dentry_lease(dir, dn, 1431543212b3SYan, Zheng rinfo->dlease, session, 1432543212b3SYan, Zheng req->r_request_started); 1433f5d55f03SJeff Layton } 1434355da1ebSSage Weil dout(" final dn %p\n", dn); 1435bc2de10dSJeff Layton } else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP || 1436bc2de10dSJeff Layton req->r_op == CEPH_MDS_OP_MKSNAP) && 1437bc2de10dSJeff Layton !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { 14383dd69aabSJeff Layton struct inode *dir = req->r_parent; 1439355da1ebSSage Weil 1440355da1ebSSage Weil /* fill out a snapdir LOOKUPSNAP dentry */ 14410a8a70f9SYan, Zheng BUG_ON(!dir); 14420a8a70f9SYan, Zheng BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); 14432bf996acSYan, Zheng BUG_ON(!req->r_dentry); 14442bf996acSYan, Zheng dout(" linking snapped dir %p to dn %p\n", in, req->r_dentry); 144570db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 144686b58d13SYan, Zheng ihold(in); 14472bf996acSYan, Zheng err = splice_dentry(&req->r_dentry, in); 14482bf996acSYan, Zheng if (err < 0) 1449355da1ebSSage Weil goto done; 1450543212b3SYan, Zheng } else if (rinfo->head->is_dentry && req->r_dentry) { 1451543212b3SYan, Zheng /* parent inode is not locked, be carefull */ 1452cdde7c43SJeff Layton struct ceph_vino *ptvino = NULL; 1453cdde7c43SJeff Layton dvino.ino = le64_to_cpu(rinfo->diri.in->ino); 1454cdde7c43SJeff Layton dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); 1455cdde7c43SJeff Layton if (rinfo->head->is_target) { 1456cdde7c43SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1457cdde7c43SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 1458cdde7c43SJeff Layton ptvino = &tvino; 1459cdde7c43SJeff Layton } 1460543212b3SYan, Zheng update_dentry_lease_careful(req->r_dentry, rinfo->dlease, 1461543212b3SYan, Zheng session, req->r_request_started, 1462543212b3SYan, Zheng rinfo->dname, rinfo->dname_len, 1463543212b3SYan, Zheng &dvino, ptvino); 1464355da1ebSSage Weil } 1465355da1ebSSage Weil done: 1466355da1ebSSage Weil dout("fill_trace done err=%d\n", err); 1467355da1ebSSage Weil return err; 1468355da1ebSSage Weil } 1469355da1ebSSage Weil 1470355da1ebSSage Weil /* 1471355da1ebSSage Weil * Prepopulate our cache with readdir results, leases, etc. 1472355da1ebSSage Weil */ 147379f9f99aSSage Weil static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, 147479f9f99aSSage Weil struct ceph_mds_session *session) 147579f9f99aSSage Weil { 147679f9f99aSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 147779f9f99aSSage Weil int i, err = 0; 147879f9f99aSSage Weil 147979f9f99aSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 14802a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 148179f9f99aSSage Weil struct ceph_vino vino; 148279f9f99aSSage Weil struct inode *in; 148379f9f99aSSage Weil int rc; 148479f9f99aSSage Weil 14852a5beea3SYan, Zheng vino.ino = le64_to_cpu(rde->inode.in->ino); 14862a5beea3SYan, Zheng vino.snap = le64_to_cpu(rde->inode.in->snapid); 148779f9f99aSSage Weil 148879f9f99aSSage Weil in = ceph_get_inode(req->r_dentry->d_sb, vino); 148979f9f99aSSage Weil if (IS_ERR(in)) { 149079f9f99aSSage Weil err = PTR_ERR(in); 149179f9f99aSSage Weil dout("new_inode badness got %d\n", err); 149279f9f99aSSage Weil continue; 149379f9f99aSSage Weil } 14942a5beea3SYan, Zheng rc = fill_inode(in, NULL, &rde->inode, NULL, session, 149579f9f99aSSage Weil req->r_request_started, -1, 149679f9f99aSSage Weil &req->r_caps_reservation); 149779f9f99aSSage Weil if (rc < 0) { 149879f9f99aSSage Weil pr_err("fill_inode badness on %p got %d\n", in, rc); 149979f9f99aSSage Weil err = rc; 150079f9f99aSSage Weil } 15013e1d0452SYan, Zheng /* avoid calling iput_final() in mds dispatch threads */ 15023e1d0452SYan, Zheng ceph_async_iput(in); 150379f9f99aSSage Weil } 150479f9f99aSSage Weil 150579f9f99aSSage Weil return err; 150679f9f99aSSage Weil } 150779f9f99aSSage Weil 1508fdd4e158SYan, Zheng void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) 1509fdd4e158SYan, Zheng { 1510fdd4e158SYan, Zheng if (ctl->page) { 1511fdd4e158SYan, Zheng kunmap(ctl->page); 151209cbfeafSKirill A. Shutemov put_page(ctl->page); 1513fdd4e158SYan, Zheng ctl->page = NULL; 1514fdd4e158SYan, Zheng } 1515fdd4e158SYan, Zheng } 1516fdd4e158SYan, Zheng 1517fdd4e158SYan, Zheng static int fill_readdir_cache(struct inode *dir, struct dentry *dn, 1518fdd4e158SYan, Zheng struct ceph_readdir_cache_control *ctl, 1519fdd4e158SYan, Zheng struct ceph_mds_request *req) 1520fdd4e158SYan, Zheng { 1521fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(dir); 152209cbfeafSKirill A. Shutemov unsigned nsize = PAGE_SIZE / sizeof(struct dentry*); 1523fdd4e158SYan, Zheng unsigned idx = ctl->index % nsize; 1524fdd4e158SYan, Zheng pgoff_t pgoff = ctl->index / nsize; 1525fdd4e158SYan, Zheng 1526fdd4e158SYan, Zheng if (!ctl->page || pgoff != page_index(ctl->page)) { 1527fdd4e158SYan, Zheng ceph_readdir_cache_release(ctl); 1528af5e5eb5SYan, Zheng if (idx == 0) 1529fdd4e158SYan, Zheng ctl->page = grab_cache_page(&dir->i_data, pgoff); 1530af5e5eb5SYan, Zheng else 1531af5e5eb5SYan, Zheng ctl->page = find_lock_page(&dir->i_data, pgoff); 1532fdd4e158SYan, Zheng if (!ctl->page) { 1533fdd4e158SYan, Zheng ctl->index = -1; 1534af5e5eb5SYan, Zheng return idx == 0 ? -ENOMEM : 0; 1535fdd4e158SYan, Zheng } 1536fdd4e158SYan, Zheng /* reading/filling the cache are serialized by 1537fdd4e158SYan, Zheng * i_mutex, no need to use page lock */ 1538fdd4e158SYan, Zheng unlock_page(ctl->page); 1539fdd4e158SYan, Zheng ctl->dentries = kmap(ctl->page); 1540af5e5eb5SYan, Zheng if (idx == 0) 154109cbfeafSKirill A. Shutemov memset(ctl->dentries, 0, PAGE_SIZE); 1542fdd4e158SYan, Zheng } 1543fdd4e158SYan, Zheng 1544fdd4e158SYan, Zheng if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && 1545fdd4e158SYan, Zheng req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { 1546fdd4e158SYan, Zheng dout("readdir cache dn %p idx %d\n", dn, ctl->index); 1547fdd4e158SYan, Zheng ctl->dentries[idx] = dn; 1548fdd4e158SYan, Zheng ctl->index++; 1549fdd4e158SYan, Zheng } else { 1550fdd4e158SYan, Zheng dout("disable readdir cache\n"); 1551fdd4e158SYan, Zheng ctl->index = -1; 1552fdd4e158SYan, Zheng } 1553fdd4e158SYan, Zheng return 0; 1554fdd4e158SYan, Zheng } 1555fdd4e158SYan, Zheng 1556355da1ebSSage Weil int ceph_readdir_prepopulate(struct ceph_mds_request *req, 1557355da1ebSSage Weil struct ceph_mds_session *session) 1558355da1ebSSage Weil { 1559355da1ebSSage Weil struct dentry *parent = req->r_dentry; 1560f3c4ebe6SYan, Zheng struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); 1561355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1562355da1ebSSage Weil struct qstr dname; 1563355da1ebSSage Weil struct dentry *dn; 1564355da1ebSSage Weil struct inode *in; 1565315f2408SYan, Zheng int err = 0, skipped = 0, ret, i; 1566355da1ebSSage Weil struct ceph_mds_request_head *rhead = req->r_request->front.iov_base; 156781c6aea5SYan, Zheng u32 frag = le32_to_cpu(rhead->args.readdir.frag); 1568f3c4ebe6SYan, Zheng u32 last_hash = 0; 1569f3c4ebe6SYan, Zheng u32 fpos_offset; 1570fdd4e158SYan, Zheng struct ceph_readdir_cache_control cache_ctl = {}; 1571fdd4e158SYan, Zheng 1572bc2de10dSJeff Layton if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) 1573fdd4e158SYan, Zheng return readdir_prepopulate_inodes_only(req, session); 157481c6aea5SYan, Zheng 157579162547SYan, Zheng if (rinfo->hash_order) { 157679162547SYan, Zheng if (req->r_path2) { 1577f3c4ebe6SYan, Zheng last_hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 157879162547SYan, Zheng req->r_path2, 157979162547SYan, Zheng strlen(req->r_path2)); 1580f3c4ebe6SYan, Zheng last_hash = ceph_frag_value(last_hash); 158179162547SYan, Zheng } else if (rinfo->offset_hash) { 158279162547SYan, Zheng /* mds understands offset_hash */ 158379162547SYan, Zheng WARN_ON_ONCE(req->r_readdir_offset != 2); 158479162547SYan, Zheng last_hash = le32_to_cpu(rhead->args.readdir.offset_hash); 158579162547SYan, Zheng } 1586f3c4ebe6SYan, Zheng } 1587f3c4ebe6SYan, Zheng 158881c6aea5SYan, Zheng if (rinfo->dir_dir && 158981c6aea5SYan, Zheng le32_to_cpu(rinfo->dir_dir->frag) != frag) { 159081c6aea5SYan, Zheng dout("readdir_prepopulate got new frag %x -> %x\n", 159181c6aea5SYan, Zheng frag, le32_to_cpu(rinfo->dir_dir->frag)); 159281c6aea5SYan, Zheng frag = le32_to_cpu(rinfo->dir_dir->frag); 1593f3c4ebe6SYan, Zheng if (!rinfo->hash_order) 1594fdd4e158SYan, Zheng req->r_readdir_offset = 2; 159581c6aea5SYan, Zheng } 1596355da1ebSSage Weil 1597355da1ebSSage Weil if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { 1598355da1ebSSage Weil dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", 1599355da1ebSSage Weil rinfo->dir_nr, parent); 1600355da1ebSSage Weil } else { 1601355da1ebSSage Weil dout("readdir_prepopulate %d items under dn %p\n", 1602355da1ebSSage Weil rinfo->dir_nr, parent); 1603355da1ebSSage Weil if (rinfo->dir_dir) 16042b0143b5SDavid Howells ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); 1605355da1ebSSage Weil 16068d45b911SYan, Zheng if (ceph_frag_is_leftmost(frag) && 16078d45b911SYan, Zheng req->r_readdir_offset == 2 && 160879162547SYan, Zheng !(rinfo->hash_order && last_hash)) { 16098d45b911SYan, Zheng /* note dir version at start of readdir so we can 16108d45b911SYan, Zheng * tell if any dentries get dropped */ 16118d45b911SYan, Zheng req->r_dir_release_cnt = 16128d45b911SYan, Zheng atomic64_read(&ci->i_release_count); 16138d45b911SYan, Zheng req->r_dir_ordered_cnt = 16148d45b911SYan, Zheng atomic64_read(&ci->i_ordered_count); 1615fdd4e158SYan, Zheng req->r_readdir_cache_idx = 0; 1616fdd4e158SYan, Zheng } 16178d45b911SYan, Zheng } 1618fdd4e158SYan, Zheng 1619fdd4e158SYan, Zheng cache_ctl.index = req->r_readdir_cache_idx; 1620f3c4ebe6SYan, Zheng fpos_offset = req->r_readdir_offset; 1621fdd4e158SYan, Zheng 162286b58d13SYan, Zheng /* FIXME: release caps/leases if error occurs */ 1623355da1ebSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 16242a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 1625543212b3SYan, Zheng struct ceph_vino tvino; 1626355da1ebSSage Weil 16272a5beea3SYan, Zheng dname.name = rde->name; 16282a5beea3SYan, Zheng dname.len = rde->name_len; 16298387ff25SLinus Torvalds dname.hash = full_name_hash(parent, dname.name, dname.len); 1630355da1ebSSage Weil 1631f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rde->inode.in->ino); 1632f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rde->inode.in->snapid); 1633355da1ebSSage Weil 1634f3c4ebe6SYan, Zheng if (rinfo->hash_order) { 1635f3c4ebe6SYan, Zheng u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 1636f3c4ebe6SYan, Zheng rde->name, rde->name_len); 1637f3c4ebe6SYan, Zheng hash = ceph_frag_value(hash); 1638f3c4ebe6SYan, Zheng if (hash != last_hash) 1639f3c4ebe6SYan, Zheng fpos_offset = 2; 1640f3c4ebe6SYan, Zheng last_hash = hash; 1641f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(hash, fpos_offset++, true); 1642f3c4ebe6SYan, Zheng } else { 1643f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(frag, fpos_offset++, false); 1644f3c4ebe6SYan, Zheng } 1645355da1ebSSage Weil 1646355da1ebSSage Weil retry_lookup: 1647355da1ebSSage Weil dn = d_lookup(parent, &dname); 1648355da1ebSSage Weil dout("d_lookup on parent=%p name=%.*s got %p\n", 1649355da1ebSSage Weil parent, dname.len, dname.name, dn); 1650355da1ebSSage Weil 1651355da1ebSSage Weil if (!dn) { 1652355da1ebSSage Weil dn = d_alloc(parent, &dname); 1653355da1ebSSage Weil dout("d_alloc %p '%.*s' = %p\n", parent, 1654355da1ebSSage Weil dname.len, dname.name, dn); 1655d37b1d99SMarkus Elfring if (!dn) { 1656355da1ebSSage Weil dout("d_alloc badness\n"); 1657355da1ebSSage Weil err = -ENOMEM; 1658355da1ebSSage Weil goto out; 1659355da1ebSSage Weil } 16602b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 1661f5d55f03SJeff Layton (ceph_ino(d_inode(dn)) != tvino.ino || 1662f5d55f03SJeff Layton ceph_snap(d_inode(dn)) != tvino.snap)) { 16635495c2d0SYan, Zheng struct ceph_dentry_info *di = ceph_dentry(dn); 1664355da1ebSSage Weil dout(" dn %p points to wrong inode %p\n", 16652b0143b5SDavid Howells dn, d_inode(dn)); 16665495c2d0SYan, Zheng 16675495c2d0SYan, Zheng spin_lock(&dn->d_lock); 16685495c2d0SYan, Zheng if (di->offset > 0 && 16695495c2d0SYan, Zheng di->lease_shared_gen == 16705495c2d0SYan, Zheng atomic_read(&ci->i_shared_gen)) { 1671933ad2c9SYan, Zheng __ceph_dir_clear_ordered(ci); 16725495c2d0SYan, Zheng di->offset = 0; 16735495c2d0SYan, Zheng } 16745495c2d0SYan, Zheng spin_unlock(&dn->d_lock); 16755495c2d0SYan, Zheng 1676355da1ebSSage Weil d_delete(dn); 1677355da1ebSSage Weil dput(dn); 1678355da1ebSSage Weil goto retry_lookup; 1679355da1ebSSage Weil } 1680355da1ebSSage Weil 1681355da1ebSSage Weil /* inode */ 16822b0143b5SDavid Howells if (d_really_is_positive(dn)) { 16832b0143b5SDavid Howells in = d_inode(dn); 1684355da1ebSSage Weil } else { 1685f5d55f03SJeff Layton in = ceph_get_inode(parent->d_sb, tvino); 1686ac1f12efSDan Carpenter if (IS_ERR(in)) { 1687355da1ebSSage Weil dout("new_inode badness\n"); 16882744c171SAl Viro d_drop(dn); 1689355da1ebSSage Weil dput(dn); 1690ac1f12efSDan Carpenter err = PTR_ERR(in); 1691355da1ebSSage Weil goto out; 1692355da1ebSSage Weil } 1693355da1ebSSage Weil } 1694355da1ebSSage Weil 16952a5beea3SYan, Zheng ret = fill_inode(in, NULL, &rde->inode, NULL, session, 1696355da1ebSSage Weil req->r_request_started, -1, 1697fdd4e158SYan, Zheng &req->r_caps_reservation); 1698fdd4e158SYan, Zheng if (ret < 0) { 1699355da1ebSSage Weil pr_err("fill_inode badness on %p\n", in); 17003e1d0452SYan, Zheng if (d_really_is_negative(dn)) { 17013e1d0452SYan, Zheng /* avoid calling iput_final() in mds 17023e1d0452SYan, Zheng * dispatch threads */ 17033e1d0452SYan, Zheng ceph_async_iput(in); 17043e1d0452SYan, Zheng } 170586b58d13SYan, Zheng d_drop(dn); 1706fdd4e158SYan, Zheng err = ret; 1707d69ed05aSSage Weil goto next_item; 1708355da1ebSSage Weil } 170986b58d13SYan, Zheng 17102b0143b5SDavid Howells if (d_really_is_negative(dn)) { 1711315f2408SYan, Zheng if (ceph_security_xattr_deadlock(in)) { 1712315f2408SYan, Zheng dout(" skip splicing dn %p to inode %p" 1713315f2408SYan, Zheng " (security xattr deadlock)\n", dn, in); 17143e1d0452SYan, Zheng ceph_async_iput(in); 1715315f2408SYan, Zheng skipped++; 1716315f2408SYan, Zheng goto next_item; 1717315f2408SYan, Zheng } 1718315f2408SYan, Zheng 17192bf996acSYan, Zheng err = splice_dentry(&dn, in); 17202bf996acSYan, Zheng if (err < 0) 172186b58d13SYan, Zheng goto next_item; 172286b58d13SYan, Zheng } 172386b58d13SYan, Zheng 1724f3c4ebe6SYan, Zheng ceph_dentry(dn)->offset = rde->offset; 172586b58d13SYan, Zheng 1726543212b3SYan, Zheng update_dentry_lease(d_inode(parent), dn, 1727543212b3SYan, Zheng rde->lease, req->r_session, 1728543212b3SYan, Zheng req->r_request_started); 1729fdd4e158SYan, Zheng 1730315f2408SYan, Zheng if (err == 0 && skipped == 0 && cache_ctl.index >= 0) { 1731fdd4e158SYan, Zheng ret = fill_readdir_cache(d_inode(parent), dn, 1732fdd4e158SYan, Zheng &cache_ctl, req); 1733fdd4e158SYan, Zheng if (ret < 0) 1734fdd4e158SYan, Zheng err = ret; 1735fdd4e158SYan, Zheng } 1736d69ed05aSSage Weil next_item: 1737355da1ebSSage Weil dput(dn); 1738355da1ebSSage Weil } 1739355da1ebSSage Weil out: 1740315f2408SYan, Zheng if (err == 0 && skipped == 0) { 1741bc2de10dSJeff Layton set_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags); 1742fdd4e158SYan, Zheng req->r_readdir_cache_idx = cache_ctl.index; 1743fdd4e158SYan, Zheng } 1744fdd4e158SYan, Zheng ceph_readdir_cache_release(&cache_ctl); 1745355da1ebSSage Weil dout("readdir_prepopulate done\n"); 1746355da1ebSSage Weil return err; 1747355da1ebSSage Weil } 1748355da1ebSSage Weil 1749efb0ca76SYan, Zheng bool ceph_inode_set_size(struct inode *inode, loff_t size) 1750355da1ebSSage Weil { 1751355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1752efb0ca76SYan, Zheng bool ret; 1753355da1ebSSage Weil 1754be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1755355da1ebSSage Weil dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); 175699c88e69SYan, Zheng i_size_write(inode, size); 1757224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 1758355da1ebSSage Weil 1759efb0ca76SYan, Zheng ret = __ceph_should_report_size(ci); 1760355da1ebSSage Weil 1761be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1762355da1ebSSage Weil return ret; 1763355da1ebSSage Weil } 1764355da1ebSSage Weil 1765355da1ebSSage Weil /* 17663e1d0452SYan, Zheng * Put reference to inode, but avoid calling iput_final() in current thread. 17673e1d0452SYan, Zheng * iput_final() may wait for reahahead pages. The wait can cause deadlock in 17683e1d0452SYan, Zheng * some contexts. 17693e1d0452SYan, Zheng */ 17703e1d0452SYan, Zheng void ceph_async_iput(struct inode *inode) 17713e1d0452SYan, Zheng { 17723e1d0452SYan, Zheng if (!inode) 17733e1d0452SYan, Zheng return; 17743e1d0452SYan, Zheng for (;;) { 17753e1d0452SYan, Zheng if (atomic_add_unless(&inode->i_count, -1, 1)) 17763e1d0452SYan, Zheng break; 17773e1d0452SYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 17783e1d0452SYan, Zheng &ceph_inode(inode)->i_work)) 17793e1d0452SYan, Zheng break; 17803e1d0452SYan, Zheng /* queue work failed, i_count must be at least 2 */ 17813e1d0452SYan, Zheng } 17823e1d0452SYan, Zheng } 17833e1d0452SYan, Zheng 17843e1d0452SYan, Zheng /* 1785355da1ebSSage Weil * Write back inode data in a worker thread. (This can't be done 1786355da1ebSSage Weil * in the message handler context.) 1787355da1ebSSage Weil */ 17883c6f6b79SSage Weil void ceph_queue_writeback(struct inode *inode) 17893c6f6b79SSage Weil { 17901cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 17911cf89a8dSYan, Zheng set_bit(CEPH_I_WORK_WRITEBACK, &ci->i_work_mask); 17921cf89a8dSYan, Zheng 179315a2015fSSage Weil ihold(inode); 17941cf89a8dSYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 17951cf89a8dSYan, Zheng &ci->i_work)) { 17962c27c9a5SSage Weil dout("ceph_queue_writeback %p\n", inode); 17973c6f6b79SSage Weil } else { 17981cf89a8dSYan, Zheng dout("ceph_queue_writeback %p already queued, mask=%lx\n", 17991cf89a8dSYan, Zheng inode, ci->i_work_mask); 180015a2015fSSage Weil iput(inode); 18013c6f6b79SSage Weil } 18023c6f6b79SSage Weil } 18033c6f6b79SSage Weil 1804355da1ebSSage Weil /* 18053c6f6b79SSage Weil * queue an async invalidation 18063c6f6b79SSage Weil */ 18073c6f6b79SSage Weil void ceph_queue_invalidate(struct inode *inode) 18083c6f6b79SSage Weil { 18091cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 18101cf89a8dSYan, Zheng set_bit(CEPH_I_WORK_INVALIDATE_PAGES, &ci->i_work_mask); 18111cf89a8dSYan, Zheng 181215a2015fSSage Weil ihold(inode); 18131cf89a8dSYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 18141cf89a8dSYan, Zheng &ceph_inode(inode)->i_work)) { 18153c6f6b79SSage Weil dout("ceph_queue_invalidate %p\n", inode); 18163c6f6b79SSage Weil } else { 18171cf89a8dSYan, Zheng dout("ceph_queue_invalidate %p already queued, mask=%lx\n", 18181cf89a8dSYan, Zheng inode, ci->i_work_mask); 181915a2015fSSage Weil iput(inode); 18203c6f6b79SSage Weil } 18213c6f6b79SSage Weil } 18223c6f6b79SSage Weil 18233c6f6b79SSage Weil /* 18241cf89a8dSYan, Zheng * Queue an async vmtruncate. If we fail to queue work, we will handle 18251cf89a8dSYan, Zheng * the truncation the next time we call __ceph_do_pending_vmtruncate. 1826355da1ebSSage Weil */ 18271cf89a8dSYan, Zheng void ceph_queue_vmtruncate(struct inode *inode) 1828355da1ebSSage Weil { 18291cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 18301cf89a8dSYan, Zheng set_bit(CEPH_I_WORK_VMTRUNCATE, &ci->i_work_mask); 18311cf89a8dSYan, Zheng 18321cf89a8dSYan, Zheng ihold(inode); 18331cf89a8dSYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 18341cf89a8dSYan, Zheng &ci->i_work)) { 18351cf89a8dSYan, Zheng dout("ceph_queue_vmtruncate %p\n", inode); 18361cf89a8dSYan, Zheng } else { 18371cf89a8dSYan, Zheng dout("ceph_queue_vmtruncate %p already queued, mask=%lx\n", 18381cf89a8dSYan, Zheng inode, ci->i_work_mask); 18391cf89a8dSYan, Zheng iput(inode); 18401cf89a8dSYan, Zheng } 18411cf89a8dSYan, Zheng } 18421cf89a8dSYan, Zheng 18431cf89a8dSYan, Zheng static void ceph_do_invalidate_pages(struct inode *inode) 18441cf89a8dSYan, Zheng { 18451cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 18466c93df5dSYan, Zheng struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 1847355da1ebSSage Weil u32 orig_gen; 1848355da1ebSSage Weil int check = 0; 1849355da1ebSSage Weil 1850b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 18516c93df5dSYan, Zheng 185252953d55SSeraphime Kirkovski if (READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) { 18536c93df5dSYan, Zheng pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n", 18546c93df5dSYan, Zheng inode, ceph_ino(inode)); 18556c93df5dSYan, Zheng mapping_set_error(inode->i_mapping, -EIO); 18566c93df5dSYan, Zheng truncate_pagecache(inode, 0); 18576c93df5dSYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 18586c93df5dSYan, Zheng goto out; 18596c93df5dSYan, Zheng } 18606c93df5dSYan, Zheng 1861be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1862355da1ebSSage Weil dout("invalidate_pages %p gen %d revoking %d\n", inode, 1863355da1ebSSage Weil ci->i_rdcache_gen, ci->i_rdcache_revoking); 1864cd045cb4SSage Weil if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { 18659563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 18669563f88cSYan, Zheng check = 1; 1867be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1868b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1869355da1ebSSage Weil goto out; 1870355da1ebSSage Weil } 1871355da1ebSSage Weil orig_gen = ci->i_rdcache_gen; 1872be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1873355da1ebSSage Weil 18749abd4db7SYan, Zheng if (invalidate_inode_pages2(inode->i_mapping) < 0) { 18759abd4db7SYan, Zheng pr_err("invalidate_pages %p fails\n", inode); 18769abd4db7SYan, Zheng } 1877355da1ebSSage Weil 1878be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1879cd045cb4SSage Weil if (orig_gen == ci->i_rdcache_gen && 1880cd045cb4SSage Weil orig_gen == ci->i_rdcache_revoking) { 1881355da1ebSSage Weil dout("invalidate_pages %p gen %d successful\n", inode, 1882355da1ebSSage Weil ci->i_rdcache_gen); 1883cd045cb4SSage Weil ci->i_rdcache_revoking--; 1884355da1ebSSage Weil check = 1; 1885355da1ebSSage Weil } else { 1886cd045cb4SSage Weil dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", 1887cd045cb4SSage Weil inode, orig_gen, ci->i_rdcache_gen, 1888cd045cb4SSage Weil ci->i_rdcache_revoking); 18899563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 18909563f88cSYan, Zheng check = 1; 1891355da1ebSSage Weil } 1892be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1893b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 18949563f88cSYan, Zheng out: 1895355da1ebSSage Weil if (check) 1896355da1ebSSage Weil ceph_check_caps(ci, 0, NULL); 18973c6f6b79SSage Weil } 18983c6f6b79SSage Weil 18993c6f6b79SSage Weil /* 1900355da1ebSSage Weil * Make sure any pending truncation is applied before doing anything 1901355da1ebSSage Weil * that may depend on it. 1902355da1ebSSage Weil */ 1903b415bf4fSYan, Zheng void __ceph_do_pending_vmtruncate(struct inode *inode) 1904355da1ebSSage Weil { 1905355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1906355da1ebSSage Weil u64 to; 1907a85f50b6SYan, Zheng int wrbuffer_refs, finish = 0; 1908355da1ebSSage Weil 1909b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1910355da1ebSSage Weil retry: 1911be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1912355da1ebSSage Weil if (ci->i_truncate_pending == 0) { 1913355da1ebSSage Weil dout("__do_pending_vmtruncate %p none pending\n", inode); 1914be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1915b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1916355da1ebSSage Weil return; 1917355da1ebSSage Weil } 1918355da1ebSSage Weil 1919355da1ebSSage Weil /* 1920355da1ebSSage Weil * make sure any dirty snapped pages are flushed before we 1921355da1ebSSage Weil * possibly truncate them.. so write AND block! 1922355da1ebSSage Weil */ 1923355da1ebSSage Weil if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { 1924c8fd0d37SYan, Zheng spin_unlock(&ci->i_ceph_lock); 1925355da1ebSSage Weil dout("__do_pending_vmtruncate %p flushing snaps first\n", 1926355da1ebSSage Weil inode); 1927355da1ebSSage Weil filemap_write_and_wait_range(&inode->i_data, 0, 1928355da1ebSSage Weil inode->i_sb->s_maxbytes); 1929355da1ebSSage Weil goto retry; 1930355da1ebSSage Weil } 1931355da1ebSSage Weil 1932b0d7c223SYan, Zheng /* there should be no reader or writer */ 1933b0d7c223SYan, Zheng WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); 1934b0d7c223SYan, Zheng 1935355da1ebSSage Weil to = ci->i_truncate_size; 1936355da1ebSSage Weil wrbuffer_refs = ci->i_wrbuffer_ref; 1937355da1ebSSage Weil dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, 1938355da1ebSSage Weil ci->i_truncate_pending, to); 1939be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1940355da1ebSSage Weil 19414e217b5dSYan, Zheng truncate_pagecache(inode, to); 1942355da1ebSSage Weil 1943be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1944a85f50b6SYan, Zheng if (to == ci->i_truncate_size) { 1945a85f50b6SYan, Zheng ci->i_truncate_pending = 0; 1946a85f50b6SYan, Zheng finish = 1; 1947a85f50b6SYan, Zheng } 1948be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1949a85f50b6SYan, Zheng if (!finish) 1950a85f50b6SYan, Zheng goto retry; 1951355da1ebSSage Weil 1952b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1953b0d7c223SYan, Zheng 1954355da1ebSSage Weil if (wrbuffer_refs == 0) 1955355da1ebSSage Weil ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL); 1956a85f50b6SYan, Zheng 195703066f23SYehuda Sadeh wake_up_all(&ci->i_cap_wq); 1958355da1ebSSage Weil } 1959355da1ebSSage Weil 19601cf89a8dSYan, Zheng static void ceph_inode_work(struct work_struct *work) 19611cf89a8dSYan, Zheng { 19621cf89a8dSYan, Zheng struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 19631cf89a8dSYan, Zheng i_work); 19641cf89a8dSYan, Zheng struct inode *inode = &ci->vfs_inode; 19651cf89a8dSYan, Zheng 19661cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_WRITEBACK, &ci->i_work_mask)) { 19671cf89a8dSYan, Zheng dout("writeback %p\n", inode); 19681cf89a8dSYan, Zheng filemap_fdatawrite(&inode->i_data); 19691cf89a8dSYan, Zheng } 19701cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_INVALIDATE_PAGES, &ci->i_work_mask)) 19711cf89a8dSYan, Zheng ceph_do_invalidate_pages(inode); 19721cf89a8dSYan, Zheng 19731cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_VMTRUNCATE, &ci->i_work_mask)) 19741cf89a8dSYan, Zheng __ceph_do_pending_vmtruncate(inode); 19751cf89a8dSYan, Zheng 19761cf89a8dSYan, Zheng iput(inode); 19771cf89a8dSYan, Zheng } 19781cf89a8dSYan, Zheng 1979355da1ebSSage Weil /* 1980355da1ebSSage Weil * symlinks 1981355da1ebSSage Weil */ 1982355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops = { 19836b255391SAl Viro .get_link = simple_get_link, 19840b932672SYan, Zheng .setattr = ceph_setattr, 19850b932672SYan, Zheng .getattr = ceph_getattr, 19860b932672SYan, Zheng .listxattr = ceph_listxattr, 1987355da1ebSSage Weil }; 1988355da1ebSSage Weil 1989a26feccaSAndreas Gruenbacher int __ceph_setattr(struct inode *inode, struct iattr *attr) 1990355da1ebSSage Weil { 1991355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1992c62498d7SJeff Layton unsigned int ia_valid = attr->ia_valid; 1993355da1ebSSage Weil struct ceph_mds_request *req; 1994a26feccaSAndreas Gruenbacher struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; 1995f66fd9f0SYan, Zheng struct ceph_cap_flush *prealloc_cf; 1996355da1ebSSage Weil int issued; 1997355da1ebSSage Weil int release = 0, dirtied = 0; 1998355da1ebSSage Weil int mask = 0; 1999355da1ebSSage Weil int err = 0; 2000fca65b4aSSage Weil int inode_dirty_flags = 0; 2001604d1b02SYan, Zheng bool lock_snap_rwsem = false; 2002355da1ebSSage Weil 2003f66fd9f0SYan, Zheng prealloc_cf = ceph_alloc_cap_flush(); 2004f66fd9f0SYan, Zheng if (!prealloc_cf) 2005f66fd9f0SYan, Zheng return -ENOMEM; 2006f66fd9f0SYan, Zheng 2007355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, 2008355da1ebSSage Weil USE_AUTH_MDS); 2009f66fd9f0SYan, Zheng if (IS_ERR(req)) { 2010f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 2011355da1ebSSage Weil return PTR_ERR(req); 2012f66fd9f0SYan, Zheng } 2013355da1ebSSage Weil 2014be655596SSage Weil spin_lock(&ci->i_ceph_lock); 2015355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 2016604d1b02SYan, Zheng 2017604d1b02SYan, Zheng if (!ci->i_head_snapc && 2018604d1b02SYan, Zheng (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { 2019604d1b02SYan, Zheng lock_snap_rwsem = true; 2020604d1b02SYan, Zheng if (!down_read_trylock(&mdsc->snap_rwsem)) { 2021604d1b02SYan, Zheng spin_unlock(&ci->i_ceph_lock); 2022604d1b02SYan, Zheng down_read(&mdsc->snap_rwsem); 2023604d1b02SYan, Zheng spin_lock(&ci->i_ceph_lock); 2024604d1b02SYan, Zheng issued = __ceph_caps_issued(ci, NULL); 2025604d1b02SYan, Zheng } 2026604d1b02SYan, Zheng } 2027604d1b02SYan, Zheng 2028355da1ebSSage Weil dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); 2029355da1ebSSage Weil 2030355da1ebSSage Weil if (ia_valid & ATTR_UID) { 2031355da1ebSSage Weil dout("setattr %p uid %d -> %d\n", inode, 2032bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 2033bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 2034355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2035355da1ebSSage Weil inode->i_uid = attr->ia_uid; 2036355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2037355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2038ab871b90SEric W. Biederman !uid_eq(attr->ia_uid, inode->i_uid)) { 2039ab871b90SEric W. Biederman req->r_args.setattr.uid = cpu_to_le32( 2040ab871b90SEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 2041355da1ebSSage Weil mask |= CEPH_SETATTR_UID; 2042355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2043355da1ebSSage Weil } 2044355da1ebSSage Weil } 2045355da1ebSSage Weil if (ia_valid & ATTR_GID) { 2046355da1ebSSage Weil dout("setattr %p gid %d -> %d\n", inode, 2047bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid), 2048bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 2049355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2050355da1ebSSage Weil inode->i_gid = attr->ia_gid; 2051355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2052355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2053ab871b90SEric W. Biederman !gid_eq(attr->ia_gid, inode->i_gid)) { 2054ab871b90SEric W. Biederman req->r_args.setattr.gid = cpu_to_le32( 2055ab871b90SEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 2056355da1ebSSage Weil mask |= CEPH_SETATTR_GID; 2057355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2058355da1ebSSage Weil } 2059355da1ebSSage Weil } 2060355da1ebSSage Weil if (ia_valid & ATTR_MODE) { 2061355da1ebSSage Weil dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, 2062355da1ebSSage Weil attr->ia_mode); 2063355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2064355da1ebSSage Weil inode->i_mode = attr->ia_mode; 2065355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2066355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2067355da1ebSSage Weil attr->ia_mode != inode->i_mode) { 20687221fe4cSGuangliang Zhao inode->i_mode = attr->ia_mode; 2069355da1ebSSage Weil req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); 2070355da1ebSSage Weil mask |= CEPH_SETATTR_MODE; 2071355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2072355da1ebSSage Weil } 2073355da1ebSSage Weil } 2074355da1ebSSage Weil 2075355da1ebSSage Weil if (ia_valid & ATTR_ATIME) { 207613442b03SDeepa Dinamani dout("setattr %p atime %lld.%ld -> %lld.%ld\n", inode, 20779bbeab41SArnd Bergmann inode->i_atime.tv_sec, inode->i_atime.tv_nsec, 20789bbeab41SArnd Bergmann attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); 2079355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2080355da1ebSSage Weil ci->i_time_warp_seq++; 2081355da1ebSSage Weil inode->i_atime = attr->ia_atime; 2082355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2083355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 208495582b00SDeepa Dinamani timespec64_compare(&inode->i_atime, 2085355da1ebSSage Weil &attr->ia_atime) < 0) { 2086355da1ebSSage Weil inode->i_atime = attr->ia_atime; 2087355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2088355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 208995582b00SDeepa Dinamani !timespec64_equal(&inode->i_atime, &attr->ia_atime)) { 20909bbeab41SArnd Bergmann ceph_encode_timespec64(&req->r_args.setattr.atime, 20919bbeab41SArnd Bergmann &attr->ia_atime); 2092355da1ebSSage Weil mask |= CEPH_SETATTR_ATIME; 2093be70489eSYan, Zheng release |= CEPH_CAP_FILE_SHARED | 2094be70489eSYan, Zheng CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2095355da1ebSSage Weil } 2096355da1ebSSage Weil } 2097c62498d7SJeff Layton if (ia_valid & ATTR_SIZE) { 2098c62498d7SJeff Layton dout("setattr %p size %lld -> %lld\n", inode, 2099c62498d7SJeff Layton inode->i_size, attr->ia_size); 2100c62498d7SJeff Layton if ((issued & CEPH_CAP_FILE_EXCL) && 2101c62498d7SJeff Layton attr->ia_size > inode->i_size) { 2102c62498d7SJeff Layton i_size_write(inode, attr->ia_size); 2103c62498d7SJeff Layton inode->i_blocks = calc_inode_blocks(attr->ia_size); 2104c62498d7SJeff Layton ci->i_reported_size = attr->ia_size; 2105c62498d7SJeff Layton dirtied |= CEPH_CAP_FILE_EXCL; 2106c62498d7SJeff Layton ia_valid |= ATTR_MTIME; 2107c62498d7SJeff Layton } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 2108c62498d7SJeff Layton attr->ia_size != inode->i_size) { 2109c62498d7SJeff Layton req->r_args.setattr.size = cpu_to_le64(attr->ia_size); 2110c62498d7SJeff Layton req->r_args.setattr.old_size = 2111c62498d7SJeff Layton cpu_to_le64(inode->i_size); 2112c62498d7SJeff Layton mask |= CEPH_SETATTR_SIZE; 2113c62498d7SJeff Layton release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL | 2114c62498d7SJeff Layton CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2115c62498d7SJeff Layton } 2116c62498d7SJeff Layton } 2117355da1ebSSage Weil if (ia_valid & ATTR_MTIME) { 211813442b03SDeepa Dinamani dout("setattr %p mtime %lld.%ld -> %lld.%ld\n", inode, 21199bbeab41SArnd Bergmann inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 21209bbeab41SArnd Bergmann attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); 2121355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2122355da1ebSSage Weil ci->i_time_warp_seq++; 2123355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2124355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2125355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 212695582b00SDeepa Dinamani timespec64_compare(&inode->i_mtime, 2127355da1ebSSage Weil &attr->ia_mtime) < 0) { 2128355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2129355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2130355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 213195582b00SDeepa Dinamani !timespec64_equal(&inode->i_mtime, &attr->ia_mtime)) { 21329bbeab41SArnd Bergmann ceph_encode_timespec64(&req->r_args.setattr.mtime, 21339bbeab41SArnd Bergmann &attr->ia_mtime); 2134355da1ebSSage Weil mask |= CEPH_SETATTR_MTIME; 2135be70489eSYan, Zheng release |= CEPH_CAP_FILE_SHARED | 2136be70489eSYan, Zheng CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2137355da1ebSSage Weil } 2138355da1ebSSage Weil } 2139355da1ebSSage Weil 2140355da1ebSSage Weil /* these do nothing */ 2141355da1ebSSage Weil if (ia_valid & ATTR_CTIME) { 2142355da1ebSSage Weil bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| 2143355da1ebSSage Weil ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; 214413442b03SDeepa Dinamani dout("setattr %p ctime %lld.%ld -> %lld.%ld (%s)\n", inode, 21459bbeab41SArnd Bergmann inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 21469bbeab41SArnd Bergmann attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, 2147355da1ebSSage Weil only ? "ctime only" : "ignored"); 2148355da1ebSSage Weil if (only) { 2149355da1ebSSage Weil /* 2150355da1ebSSage Weil * if kernel wants to dirty ctime but nothing else, 2151355da1ebSSage Weil * we need to choose a cap to dirty under, or do 2152355da1ebSSage Weil * a almost-no-op setattr 2153355da1ebSSage Weil */ 2154355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) 2155355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2156355da1ebSSage Weil else if (issued & CEPH_CAP_FILE_EXCL) 2157355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2158355da1ebSSage Weil else if (issued & CEPH_CAP_XATTR_EXCL) 2159355da1ebSSage Weil dirtied |= CEPH_CAP_XATTR_EXCL; 2160355da1ebSSage Weil else 2161355da1ebSSage Weil mask |= CEPH_SETATTR_CTIME; 2162355da1ebSSage Weil } 2163355da1ebSSage Weil } 2164355da1ebSSage Weil if (ia_valid & ATTR_FILE) 2165355da1ebSSage Weil dout("setattr %p ATTR_FILE ... hrm!\n", inode); 2166355da1ebSSage Weil 2167355da1ebSSage Weil if (dirtied) { 2168f66fd9f0SYan, Zheng inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, 2169f66fd9f0SYan, Zheng &prealloc_cf); 21704ca2fea6SYan, Zheng inode->i_ctime = attr->ia_ctime; 2171355da1ebSSage Weil } 2172355da1ebSSage Weil 2173355da1ebSSage Weil release &= issued; 2174be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 2175604d1b02SYan, Zheng if (lock_snap_rwsem) 2176604d1b02SYan, Zheng up_read(&mdsc->snap_rwsem); 2177355da1ebSSage Weil 2178fca65b4aSSage Weil if (inode_dirty_flags) 2179fca65b4aSSage Weil __mark_inode_dirty(inode, inode_dirty_flags); 2180fca65b4aSSage Weil 21817221fe4cSGuangliang Zhao 2182355da1ebSSage Weil if (mask) { 218370b666c3SSage Weil req->r_inode = inode; 218470b666c3SSage Weil ihold(inode); 2185355da1ebSSage Weil req->r_inode_drop = release; 2186355da1ebSSage Weil req->r_args.setattr.mask = cpu_to_le32(mask); 2187355da1ebSSage Weil req->r_num_caps = 1; 21880ed1e90aSArnd Bergmann req->r_stamp = attr->ia_ctime; 2189752c8bdcSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 2190355da1ebSSage Weil } 2191355da1ebSSage Weil dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, 2192355da1ebSSage Weil ceph_cap_string(dirtied), mask); 2193355da1ebSSage Weil 2194355da1ebSSage Weil ceph_mdsc_put_request(req); 21958179a101SYan, Zheng ceph_free_cap_flush(prealloc_cf); 21968179a101SYan, Zheng 21978179a101SYan, Zheng if (err >= 0 && (mask & CEPH_SETATTR_SIZE)) 2198b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 21998179a101SYan, Zheng 2200355da1ebSSage Weil return err; 2201355da1ebSSage Weil } 2202355da1ebSSage Weil 2203355da1ebSSage Weil /* 2204a26feccaSAndreas Gruenbacher * setattr 2205a26feccaSAndreas Gruenbacher */ 2206a26feccaSAndreas Gruenbacher int ceph_setattr(struct dentry *dentry, struct iattr *attr) 2207a26feccaSAndreas Gruenbacher { 2208fd5472edSJan Kara struct inode *inode = d_inode(dentry); 220936a4c72dSChengguang Xu struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 2210fd5472edSJan Kara int err; 2211fd5472edSJan Kara 2212fd5472edSJan Kara if (ceph_snap(inode) != CEPH_NOSNAP) 2213fd5472edSJan Kara return -EROFS; 2214fd5472edSJan Kara 221531051c85SJan Kara err = setattr_prepare(dentry, attr); 2216fd5472edSJan Kara if (err != 0) 2217fd5472edSJan Kara return err; 2218fd5472edSJan Kara 22192b83845fSLuis Henriques if ((attr->ia_valid & ATTR_SIZE) && 222036a4c72dSChengguang Xu attr->ia_size > max(inode->i_size, fsc->max_file_size)) 222136a4c72dSChengguang Xu return -EFBIG; 222236a4c72dSChengguang Xu 222336a4c72dSChengguang Xu if ((attr->ia_valid & ATTR_SIZE) && 22242b83845fSLuis Henriques ceph_quota_is_max_bytes_exceeded(inode, attr->ia_size)) 22252b83845fSLuis Henriques return -EDQUOT; 22262b83845fSLuis Henriques 22278179a101SYan, Zheng err = __ceph_setattr(inode, attr); 22288179a101SYan, Zheng 22298179a101SYan, Zheng if (err >= 0 && (attr->ia_valid & ATTR_MODE)) 22308179a101SYan, Zheng err = posix_acl_chmod(inode, attr->ia_mode); 22318179a101SYan, Zheng 22328179a101SYan, Zheng return err; 2233a26feccaSAndreas Gruenbacher } 2234a26feccaSAndreas Gruenbacher 2235a26feccaSAndreas Gruenbacher /* 2236355da1ebSSage Weil * Verify that we have a lease on the given mask. If not, 2237355da1ebSSage Weil * do a getattr against an mds. 2238355da1ebSSage Weil */ 223901deead0SYan, Zheng int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 224001deead0SYan, Zheng int mask, bool force) 2241355da1ebSSage Weil { 22423d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 22433d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 2244355da1ebSSage Weil struct ceph_mds_request *req; 224549a9f4f6SYan, Zheng int mode; 2246355da1ebSSage Weil int err; 2247355da1ebSSage Weil 2248355da1ebSSage Weil if (ceph_snap(inode) == CEPH_SNAPDIR) { 2249355da1ebSSage Weil dout("do_getattr inode %p SNAPDIR\n", inode); 2250355da1ebSSage Weil return 0; 2251355da1ebSSage Weil } 2252355da1ebSSage Weil 225301deead0SYan, Zheng dout("do_getattr inode %p mask %s mode 0%o\n", 225401deead0SYan, Zheng inode, ceph_cap_string(mask), inode->i_mode); 2255508b32d8SYan, Zheng if (!force && ceph_caps_issued_mask(ceph_inode(inode), mask, 1)) 2256355da1ebSSage Weil return 0; 2257355da1ebSSage Weil 225849a9f4f6SYan, Zheng mode = (mask & CEPH_STAT_RSTAT) ? USE_AUTH_MDS : USE_ANY_MDS; 225949a9f4f6SYan, Zheng req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, mode); 2260355da1ebSSage Weil if (IS_ERR(req)) 2261355da1ebSSage Weil return PTR_ERR(req); 226270b666c3SSage Weil req->r_inode = inode; 226370b666c3SSage Weil ihold(inode); 2264355da1ebSSage Weil req->r_num_caps = 1; 2265355da1ebSSage Weil req->r_args.getattr.mask = cpu_to_le32(mask); 226601deead0SYan, Zheng req->r_locked_page = locked_page; 2267355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 226801deead0SYan, Zheng if (locked_page && err == 0) { 226901deead0SYan, Zheng u64 inline_version = req->r_reply_info.targeti.inline_version; 227001deead0SYan, Zheng if (inline_version == 0) { 227101deead0SYan, Zheng /* the reply is supposed to contain inline data */ 227201deead0SYan, Zheng err = -EINVAL; 227301deead0SYan, Zheng } else if (inline_version == CEPH_INLINE_NONE) { 227401deead0SYan, Zheng err = -ENODATA; 227501deead0SYan, Zheng } else { 227601deead0SYan, Zheng err = req->r_reply_info.targeti.inline_len; 227701deead0SYan, Zheng } 227801deead0SYan, Zheng } 2279355da1ebSSage Weil ceph_mdsc_put_request(req); 2280355da1ebSSage Weil dout("do_getattr result=%d\n", err); 2281355da1ebSSage Weil return err; 2282355da1ebSSage Weil } 2283355da1ebSSage Weil 2284355da1ebSSage Weil 2285355da1ebSSage Weil /* 2286355da1ebSSage Weil * Check inode permissions. We verify we have a valid value for 2287355da1ebSSage Weil * the AUTH cap, then call the generic handler. 2288355da1ebSSage Weil */ 228910556cb2SAl Viro int ceph_permission(struct inode *inode, int mask) 2290355da1ebSSage Weil { 2291b74c79e9SNick Piggin int err; 2292b74c79e9SNick Piggin 229310556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 2294b74c79e9SNick Piggin return -ECHILD; 2295b74c79e9SNick Piggin 2296508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); 2297355da1ebSSage Weil 2298355da1ebSSage Weil if (!err) 22992830ba7fSAl Viro err = generic_permission(inode, mask); 2300355da1ebSSage Weil return err; 2301355da1ebSSage Weil } 2302355da1ebSSage Weil 2303428bb68aSJeff Layton /* Craft a mask of needed caps given a set of requested statx attrs. */ 2304428bb68aSJeff Layton static int statx_to_caps(u32 want) 2305428bb68aSJeff Layton { 2306428bb68aSJeff Layton int mask = 0; 2307428bb68aSJeff Layton 230858981784SJeff Layton if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME)) 2309428bb68aSJeff Layton mask |= CEPH_CAP_AUTH_SHARED; 2310428bb68aSJeff Layton 2311428bb68aSJeff Layton if (want & (STATX_NLINK|STATX_CTIME)) 2312428bb68aSJeff Layton mask |= CEPH_CAP_LINK_SHARED; 2313428bb68aSJeff Layton 2314428bb68aSJeff Layton if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE| 2315428bb68aSJeff Layton STATX_BLOCKS)) 2316428bb68aSJeff Layton mask |= CEPH_CAP_FILE_SHARED; 2317428bb68aSJeff Layton 2318428bb68aSJeff Layton if (want & (STATX_CTIME)) 2319428bb68aSJeff Layton mask |= CEPH_CAP_XATTR_SHARED; 2320428bb68aSJeff Layton 2321428bb68aSJeff Layton return mask; 2322428bb68aSJeff Layton } 2323428bb68aSJeff Layton 2324355da1ebSSage Weil /* 2325428bb68aSJeff Layton * Get all the attributes. If we have sufficient caps for the requested attrs, 2326428bb68aSJeff Layton * then we can avoid talking to the MDS at all. 2327355da1ebSSage Weil */ 2328a528d35eSDavid Howells int ceph_getattr(const struct path *path, struct kstat *stat, 2329a528d35eSDavid Howells u32 request_mask, unsigned int flags) 2330355da1ebSSage Weil { 2331a528d35eSDavid Howells struct inode *inode = d_inode(path->dentry); 2332232d4b01SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 233358981784SJeff Layton u32 valid_mask = STATX_BASIC_STATS; 2334428bb68aSJeff Layton int err = 0; 2335355da1ebSSage Weil 2336428bb68aSJeff Layton /* Skip the getattr altogether if we're asked not to sync */ 2337428bb68aSJeff Layton if (!(flags & AT_STATX_DONT_SYNC)) { 2338428bb68aSJeff Layton err = ceph_do_getattr(inode, statx_to_caps(request_mask), 2339428bb68aSJeff Layton flags & AT_STATX_FORCE_SYNC); 2340428bb68aSJeff Layton if (err) 2341428bb68aSJeff Layton return err; 2342428bb68aSJeff Layton } 2343428bb68aSJeff Layton 2344355da1ebSSage Weil generic_fillattr(inode, stat); 2345ad1fee96SYehuda Sadeh stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino); 234658981784SJeff Layton 234758981784SJeff Layton /* 234858981784SJeff Layton * btime on newly-allocated inodes is 0, so if this is still set to 234958981784SJeff Layton * that, then assume that it's not valid. 235058981784SJeff Layton */ 235158981784SJeff Layton if (ci->i_btime.tv_sec || ci->i_btime.tv_nsec) { 235258981784SJeff Layton stat->btime = ci->i_btime; 235358981784SJeff Layton valid_mask |= STATX_BTIME; 235458981784SJeff Layton } 235558981784SJeff Layton 235675c9627eSYan, Zheng if (ceph_snap(inode) == CEPH_NOSNAP) 235775c9627eSYan, Zheng stat->dev = inode->i_sb->s_dev; 2358355da1ebSSage Weil else 235975c9627eSYan, Zheng stat->dev = ci->i_snapid_map ? ci->i_snapid_map->dev : 0; 236075c9627eSYan, Zheng 2361232d4b01SSage Weil if (S_ISDIR(inode->i_mode)) { 23621c1266bbSYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), 23631c1266bbSYehuda Sadeh RBYTES)) 2364232d4b01SSage Weil stat->size = ci->i_rbytes; 23651c1266bbSYehuda Sadeh else 23661c1266bbSYehuda Sadeh stat->size = ci->i_files + ci->i_subdirs; 2367232d4b01SSage Weil stat->blocks = 0; 2368355da1ebSSage Weil stat->blksize = 65536; 23698c6286f1SLuis Henriques /* 23708c6286f1SLuis Henriques * Some applications rely on the number of st_nlink 23718c6286f1SLuis Henriques * value on directories to be either 0 (if unlinked) 23728c6286f1SLuis Henriques * or 2 + number of subdirectories. 23738c6286f1SLuis Henriques */ 23748c6286f1SLuis Henriques if (stat->nlink == 1) 23758c6286f1SLuis Henriques /* '.' + '..' + subdirs */ 23768c6286f1SLuis Henriques stat->nlink = 1 + 1 + ci->i_subdirs; 2377355da1ebSSage Weil } 2378428bb68aSJeff Layton 237958981784SJeff Layton stat->result_mask = request_mask & valid_mask; 2380355da1ebSSage Weil return err; 2381355da1ebSSage Weil } 2382