1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 23d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 3355da1ebSSage Weil 4355da1ebSSage Weil #include <linux/module.h> 5355da1ebSSage Weil #include <linux/fs.h> 6355da1ebSSage Weil #include <linux/slab.h> 7355da1ebSSage Weil #include <linux/string.h> 8355da1ebSSage Weil #include <linux/uaccess.h> 9355da1ebSSage Weil #include <linux/kernel.h> 10355da1ebSSage Weil #include <linux/writeback.h> 11355da1ebSSage Weil #include <linux/vmalloc.h> 122cdeb1e4SAndreas Gruenbacher #include <linux/xattr.h> 134db658eaSLinus Torvalds #include <linux/posix_acl.h> 143e7fbe9cSYan, Zheng #include <linux/random.h> 15a407846eSYan, Zheng #include <linux/sort.h> 16a35ead31SJeff Layton #include <linux/iversion.h> 17355da1ebSSage Weil 18355da1ebSSage Weil #include "super.h" 193d14c5d2SYehuda Sadeh #include "mds_client.h" 2099ccbd22SMilosz Tanski #include "cache.h" 213d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 22355da1ebSSage Weil 23355da1ebSSage Weil /* 24355da1ebSSage Weil * Ceph inode operations 25355da1ebSSage Weil * 26355da1ebSSage Weil * Implement basic inode helpers (get, alloc) and inode ops (getattr, 27355da1ebSSage Weil * setattr, etc.), xattr helpers, and helpers for assimilating 28355da1ebSSage Weil * metadata returned by the MDS into our cache. 29355da1ebSSage Weil * 30355da1ebSSage Weil * Also define helpers for doing asynchronous writeback, invalidation, 31355da1ebSSage Weil * and truncation for the benefit of those who can't afford to block 32355da1ebSSage Weil * (typically because they are in the message handler path). 33355da1ebSSage Weil */ 34355da1ebSSage Weil 35355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops; 36355da1ebSSage Weil 371cf89a8dSYan, Zheng static void ceph_inode_work(struct work_struct *work); 38355da1ebSSage Weil 39355da1ebSSage Weil /* 40355da1ebSSage Weil * find or create an inode, given the ceph ino number 41355da1ebSSage Weil */ 42ad1fee96SYehuda Sadeh static int ceph_set_ino_cb(struct inode *inode, void *data) 43ad1fee96SYehuda Sadeh { 44ebce3eb2SJeff Layton struct ceph_inode_info *ci = ceph_inode(inode); 45ebce3eb2SJeff Layton 46ebce3eb2SJeff Layton ci->i_vino = *(struct ceph_vino *)data; 47ebce3eb2SJeff Layton inode->i_ino = ceph_vino_to_ino_t(ci->i_vino); 48a35ead31SJeff Layton inode_set_iversion_raw(inode, 0); 49ad1fee96SYehuda Sadeh return 0; 50ad1fee96SYehuda Sadeh } 51ad1fee96SYehuda Sadeh 52355da1ebSSage Weil struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) 53355da1ebSSage Weil { 54355da1ebSSage Weil struct inode *inode; 55355da1ebSSage Weil 56ebce3eb2SJeff Layton inode = iget5_locked(sb, (unsigned long)vino.ino, ceph_ino_compare, 57ebce3eb2SJeff Layton ceph_set_ino_cb, &vino); 58d37b1d99SMarkus Elfring if (!inode) 59355da1ebSSage Weil return ERR_PTR(-ENOMEM); 60355da1ebSSage Weil 61ebce3eb2SJeff Layton dout("get_inode on %llu=%llx.%llx got %p new %d\n", ceph_present_inode(inode), 62ebce3eb2SJeff Layton ceph_vinop(inode), inode, !!(inode->i_state & I_NEW)); 63355da1ebSSage Weil return inode; 64355da1ebSSage Weil } 65355da1ebSSage Weil 66355da1ebSSage Weil /* 67355da1ebSSage Weil * get/constuct snapdir inode for a given directory 68355da1ebSSage Weil */ 69355da1ebSSage Weil struct inode *ceph_get_snapdir(struct inode *parent) 70355da1ebSSage Weil { 71355da1ebSSage Weil struct ceph_vino vino = { 72355da1ebSSage Weil .ino = ceph_ino(parent), 73355da1ebSSage Weil .snap = CEPH_SNAPDIR, 74355da1ebSSage Weil }; 75355da1ebSSage Weil struct inode *inode = ceph_get_inode(parent->i_sb, vino); 76b377ff13SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 77355da1ebSSage Weil 78355da1ebSSage Weil BUG_ON(!S_ISDIR(parent->i_mode)); 79355da1ebSSage Weil if (IS_ERR(inode)) 807e34bc52SJulia Lawall return inode; 81355da1ebSSage Weil inode->i_mode = parent->i_mode; 82355da1ebSSage Weil inode->i_uid = parent->i_uid; 83355da1ebSSage Weil inode->i_gid = parent->i_gid; 84ef915725SLuis Henriques inode->i_mtime = parent->i_mtime; 85ef915725SLuis Henriques inode->i_ctime = parent->i_ctime; 86ef915725SLuis Henriques inode->i_atime = parent->i_atime; 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; 91ef915725SLuis Henriques ci->i_btime = ceph_inode(parent)->i_btime; 92893e456bSJeff Layton 93893e456bSJeff Layton if (inode->i_state & I_NEW) 94893e456bSJeff Layton unlock_new_inode(inode); 95893e456bSJeff Layton 96355da1ebSSage Weil return inode; 97355da1ebSSage Weil } 98355da1ebSSage Weil 99355da1ebSSage Weil const struct inode_operations ceph_file_iops = { 100355da1ebSSage Weil .permission = ceph_permission, 101355da1ebSSage Weil .setattr = ceph_setattr, 102355da1ebSSage Weil .getattr = ceph_getattr, 103355da1ebSSage Weil .listxattr = ceph_listxattr, 1047221fe4cSGuangliang Zhao .get_acl = ceph_get_acl, 10572466d0bSSage Weil .set_acl = ceph_set_acl, 106355da1ebSSage Weil }; 107355da1ebSSage Weil 108355da1ebSSage Weil 109355da1ebSSage Weil /* 110355da1ebSSage Weil * We use a 'frag tree' to keep track of the MDS's directory fragments 111355da1ebSSage Weil * for a given inode (usually there is just a single fragment). We 112355da1ebSSage Weil * need to know when a child frag is delegated to a new MDS, or when 113355da1ebSSage Weil * it is flagged as replicated, so we can direct our requests 114355da1ebSSage Weil * accordingly. 115355da1ebSSage Weil */ 116355da1ebSSage Weil 117355da1ebSSage Weil /* 118355da1ebSSage Weil * find/create a frag in the tree 119355da1ebSSage Weil */ 120355da1ebSSage Weil static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, 121355da1ebSSage Weil u32 f) 122355da1ebSSage Weil { 123355da1ebSSage Weil struct rb_node **p; 124355da1ebSSage Weil struct rb_node *parent = NULL; 125355da1ebSSage Weil struct ceph_inode_frag *frag; 126355da1ebSSage Weil int c; 127355da1ebSSage Weil 128355da1ebSSage Weil p = &ci->i_fragtree.rb_node; 129355da1ebSSage Weil while (*p) { 130355da1ebSSage Weil parent = *p; 131355da1ebSSage Weil frag = rb_entry(parent, struct ceph_inode_frag, node); 132355da1ebSSage Weil c = ceph_frag_compare(f, frag->frag); 133355da1ebSSage Weil if (c < 0) 134355da1ebSSage Weil p = &(*p)->rb_left; 135355da1ebSSage Weil else if (c > 0) 136355da1ebSSage Weil p = &(*p)->rb_right; 137355da1ebSSage Weil else 138355da1ebSSage Weil return frag; 139355da1ebSSage Weil } 140355da1ebSSage Weil 141355da1ebSSage Weil frag = kmalloc(sizeof(*frag), GFP_NOFS); 14251308806SMarkus Elfring if (!frag) 143355da1ebSSage Weil return ERR_PTR(-ENOMEM); 14451308806SMarkus Elfring 145355da1ebSSage Weil frag->frag = f; 146355da1ebSSage Weil frag->split_by = 0; 147355da1ebSSage Weil frag->mds = -1; 148355da1ebSSage Weil frag->ndist = 0; 149355da1ebSSage Weil 150355da1ebSSage Weil rb_link_node(&frag->node, parent, p); 151355da1ebSSage Weil rb_insert_color(&frag->node, &ci->i_fragtree); 152355da1ebSSage Weil 153355da1ebSSage Weil dout("get_or_create_frag added %llx.%llx frag %x\n", 154355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 155355da1ebSSage Weil return frag; 156355da1ebSSage Weil } 157355da1ebSSage Weil 158355da1ebSSage Weil /* 159355da1ebSSage Weil * find a specific frag @f 160355da1ebSSage Weil */ 161355da1ebSSage Weil struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) 162355da1ebSSage Weil { 163355da1ebSSage Weil struct rb_node *n = ci->i_fragtree.rb_node; 164355da1ebSSage Weil 165355da1ebSSage Weil while (n) { 166355da1ebSSage Weil struct ceph_inode_frag *frag = 167355da1ebSSage Weil rb_entry(n, struct ceph_inode_frag, node); 168355da1ebSSage Weil int c = ceph_frag_compare(f, frag->frag); 169355da1ebSSage Weil if (c < 0) 170355da1ebSSage Weil n = n->rb_left; 171355da1ebSSage Weil else if (c > 0) 172355da1ebSSage Weil n = n->rb_right; 173355da1ebSSage Weil else 174355da1ebSSage Weil return frag; 175355da1ebSSage Weil } 176355da1ebSSage Weil return NULL; 177355da1ebSSage Weil } 178355da1ebSSage Weil 179355da1ebSSage Weil /* 180355da1ebSSage Weil * Choose frag containing the given value @v. If @pfrag is 181355da1ebSSage Weil * specified, copy the frag delegation info to the caller if 182355da1ebSSage Weil * it is present. 183355da1ebSSage Weil */ 1843e7fbe9cSYan, Zheng static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 1853e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 186355da1ebSSage Weil { 187355da1ebSSage Weil u32 t = ceph_frag_make(0, 0); 188355da1ebSSage Weil struct ceph_inode_frag *frag; 189355da1ebSSage Weil unsigned nway, i; 190355da1ebSSage Weil u32 n; 191355da1ebSSage Weil 192355da1ebSSage Weil if (found) 193355da1ebSSage Weil *found = 0; 194355da1ebSSage Weil 195355da1ebSSage Weil while (1) { 196355da1ebSSage Weil WARN_ON(!ceph_frag_contains_value(t, v)); 197355da1ebSSage Weil frag = __ceph_find_frag(ci, t); 198355da1ebSSage Weil if (!frag) 199355da1ebSSage Weil break; /* t is a leaf */ 200355da1ebSSage Weil if (frag->split_by == 0) { 201355da1ebSSage Weil if (pfrag) 202355da1ebSSage Weil memcpy(pfrag, frag, sizeof(*pfrag)); 203355da1ebSSage Weil if (found) 204355da1ebSSage Weil *found = 1; 205355da1ebSSage Weil break; 206355da1ebSSage Weil } 207355da1ebSSage Weil 208355da1ebSSage Weil /* choose child */ 209355da1ebSSage Weil nway = 1 << frag->split_by; 210355da1ebSSage Weil dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, 211355da1ebSSage Weil frag->split_by, nway); 212355da1ebSSage Weil for (i = 0; i < nway; i++) { 213355da1ebSSage Weil n = ceph_frag_make_child(t, frag->split_by, i); 214355da1ebSSage Weil if (ceph_frag_contains_value(n, v)) { 215355da1ebSSage Weil t = n; 216355da1ebSSage Weil break; 217355da1ebSSage Weil } 218355da1ebSSage Weil } 219355da1ebSSage Weil BUG_ON(i == nway); 220355da1ebSSage Weil } 221355da1ebSSage Weil dout("choose_frag(%x) = %x\n", v, t); 222355da1ebSSage Weil 223355da1ebSSage Weil return t; 224355da1ebSSage Weil } 225355da1ebSSage Weil 2263e7fbe9cSYan, Zheng u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2273e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 2283e7fbe9cSYan, Zheng { 2293e7fbe9cSYan, Zheng u32 ret; 2303e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 2313e7fbe9cSYan, Zheng ret = __ceph_choose_frag(ci, v, pfrag, found); 2323e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 2333e7fbe9cSYan, Zheng return ret; 2343e7fbe9cSYan, Zheng } 2353e7fbe9cSYan, Zheng 236355da1ebSSage Weil /* 237355da1ebSSage Weil * Process dirfrag (delegation) info from the mds. Include leaf 238355da1ebSSage Weil * fragment in tree ONLY if ndist > 0. Otherwise, only 239355da1ebSSage Weil * branches/splits are included in i_fragtree) 240355da1ebSSage Weil */ 241355da1ebSSage Weil static int ceph_fill_dirfrag(struct inode *inode, 242355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo) 243355da1ebSSage Weil { 244355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 245355da1ebSSage Weil struct ceph_inode_frag *frag; 246355da1ebSSage Weil u32 id = le32_to_cpu(dirinfo->frag); 247355da1ebSSage Weil int mds = le32_to_cpu(dirinfo->auth); 248355da1ebSSage Weil int ndist = le32_to_cpu(dirinfo->ndist); 2498d08503cSYan, Zheng int diri_auth = -1; 250355da1ebSSage Weil int i; 251355da1ebSSage Weil int err = 0; 252355da1ebSSage Weil 2538d08503cSYan, Zheng spin_lock(&ci->i_ceph_lock); 2548d08503cSYan, Zheng if (ci->i_auth_cap) 2558d08503cSYan, Zheng diri_auth = ci->i_auth_cap->mds; 2568d08503cSYan, Zheng spin_unlock(&ci->i_ceph_lock); 2578d08503cSYan, Zheng 25842172119SYan, Zheng if (mds == -1) /* CDIR_AUTH_PARENT */ 25942172119SYan, Zheng mds = diri_auth; 26042172119SYan, Zheng 261355da1ebSSage Weil mutex_lock(&ci->i_fragtree_mutex); 2628d08503cSYan, Zheng if (ndist == 0 && mds == diri_auth) { 263355da1ebSSage Weil /* no delegation info needed. */ 264355da1ebSSage Weil frag = __ceph_find_frag(ci, id); 265355da1ebSSage Weil if (!frag) 266355da1ebSSage Weil goto out; 267355da1ebSSage Weil if (frag->split_by == 0) { 268355da1ebSSage Weil /* tree leaf, remove */ 269355da1ebSSage Weil dout("fill_dirfrag removed %llx.%llx frag %x" 270355da1ebSSage Weil " (no ref)\n", ceph_vinop(inode), id); 271355da1ebSSage Weil rb_erase(&frag->node, &ci->i_fragtree); 272355da1ebSSage Weil kfree(frag); 273355da1ebSSage Weil } else { 274355da1ebSSage Weil /* tree branch, keep and clear */ 275355da1ebSSage Weil dout("fill_dirfrag cleared %llx.%llx frag %x" 276355da1ebSSage Weil " referral\n", ceph_vinop(inode), id); 277355da1ebSSage Weil frag->mds = -1; 278355da1ebSSage Weil frag->ndist = 0; 279355da1ebSSage Weil } 280355da1ebSSage Weil goto out; 281355da1ebSSage Weil } 282355da1ebSSage Weil 283355da1ebSSage Weil 284355da1ebSSage Weil /* find/add this frag to store mds delegation info */ 285355da1ebSSage Weil frag = __get_or_create_frag(ci, id); 286355da1ebSSage Weil if (IS_ERR(frag)) { 287355da1ebSSage Weil /* this is not the end of the world; we can continue 288355da1ebSSage Weil with bad/inaccurate delegation info */ 289355da1ebSSage Weil pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", 290355da1ebSSage Weil ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); 291355da1ebSSage Weil err = -ENOMEM; 292355da1ebSSage Weil goto out; 293355da1ebSSage Weil } 294355da1ebSSage Weil 295355da1ebSSage Weil frag->mds = mds; 296355da1ebSSage Weil frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); 297355da1ebSSage Weil for (i = 0; i < frag->ndist; i++) 298355da1ebSSage Weil frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); 299355da1ebSSage Weil dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", 300355da1ebSSage Weil ceph_vinop(inode), frag->frag, frag->ndist); 301355da1ebSSage Weil 302355da1ebSSage Weil out: 303355da1ebSSage Weil mutex_unlock(&ci->i_fragtree_mutex); 304355da1ebSSage Weil return err; 305355da1ebSSage Weil } 306355da1ebSSage Weil 307a407846eSYan, Zheng static int frag_tree_split_cmp(const void *l, const void *r) 308a407846eSYan, Zheng { 309a407846eSYan, Zheng struct ceph_frag_tree_split *ls = (struct ceph_frag_tree_split*)l; 310a407846eSYan, Zheng struct ceph_frag_tree_split *rs = (struct ceph_frag_tree_split*)r; 311fe2ed425SJeff Layton return ceph_frag_compare(le32_to_cpu(ls->frag), 312fe2ed425SJeff Layton le32_to_cpu(rs->frag)); 313a407846eSYan, Zheng } 314a407846eSYan, Zheng 315a4b7431fSYan, Zheng static bool is_frag_child(u32 f, struct ceph_inode_frag *frag) 316a4b7431fSYan, Zheng { 317a4b7431fSYan, Zheng if (!frag) 318a4b7431fSYan, Zheng return f == ceph_frag_make(0, 0); 319a4b7431fSYan, Zheng if (ceph_frag_bits(f) != ceph_frag_bits(frag->frag) + frag->split_by) 320a4b7431fSYan, Zheng return false; 321a4b7431fSYan, Zheng return ceph_frag_contains_value(frag->frag, ceph_frag_value(f)); 322a4b7431fSYan, Zheng } 323a4b7431fSYan, Zheng 3243e7fbe9cSYan, Zheng static int ceph_fill_fragtree(struct inode *inode, 3253e7fbe9cSYan, Zheng struct ceph_frag_tree_head *fragtree, 3263e7fbe9cSYan, Zheng struct ceph_mds_reply_dirfrag *dirinfo) 3273e7fbe9cSYan, Zheng { 3283e7fbe9cSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 329a4b7431fSYan, Zheng struct ceph_inode_frag *frag, *prev_frag = NULL; 3303e7fbe9cSYan, Zheng struct rb_node *rb_node; 3311b1bc16dSYan, Zheng unsigned i, split_by, nsplits; 3321b1bc16dSYan, Zheng u32 id; 3333e7fbe9cSYan, Zheng bool update = false; 3343e7fbe9cSYan, Zheng 3353e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 3363e7fbe9cSYan, Zheng nsplits = le32_to_cpu(fragtree->nsplits); 3371b1bc16dSYan, Zheng if (nsplits != ci->i_fragtree_nsplits) { 3381b1bc16dSYan, Zheng update = true; 3391b1bc16dSYan, Zheng } else if (nsplits) { 3403e7fbe9cSYan, Zheng i = prandom_u32() % nsplits; 3413e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3423e7fbe9cSYan, Zheng if (!__ceph_find_frag(ci, id)) 3433e7fbe9cSYan, Zheng update = true; 3443e7fbe9cSYan, Zheng } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { 3453e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3463e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3473e7fbe9cSYan, Zheng if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) 3483e7fbe9cSYan, Zheng update = true; 3493e7fbe9cSYan, Zheng } 3503e7fbe9cSYan, Zheng if (!update && dirinfo) { 3513e7fbe9cSYan, Zheng id = le32_to_cpu(dirinfo->frag); 3523e7fbe9cSYan, Zheng if (id != __ceph_choose_frag(ci, id, NULL, NULL)) 3533e7fbe9cSYan, Zheng update = true; 3543e7fbe9cSYan, Zheng } 3553e7fbe9cSYan, Zheng if (!update) 3563e7fbe9cSYan, Zheng goto out_unlock; 3573e7fbe9cSYan, Zheng 358a407846eSYan, Zheng if (nsplits > 1) { 359a407846eSYan, Zheng sort(fragtree->splits, nsplits, sizeof(fragtree->splits[0]), 360a407846eSYan, Zheng frag_tree_split_cmp, NULL); 361a407846eSYan, Zheng } 362a407846eSYan, Zheng 3633e7fbe9cSYan, Zheng dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); 3643e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3653e7fbe9cSYan, Zheng for (i = 0; i < nsplits; i++) { 3663e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3671b1bc16dSYan, Zheng split_by = le32_to_cpu(fragtree->splits[i].by); 3681b1bc16dSYan, Zheng if (split_by == 0 || ceph_frag_bits(id) + split_by > 24) { 3691b1bc16dSYan, Zheng pr_err("fill_fragtree %llx.%llx invalid split %d/%u, " 3701b1bc16dSYan, Zheng "frag %x split by %d\n", ceph_vinop(inode), 3711b1bc16dSYan, Zheng i, nsplits, id, split_by); 3721b1bc16dSYan, Zheng continue; 3731b1bc16dSYan, Zheng } 3743e7fbe9cSYan, Zheng frag = NULL; 3753e7fbe9cSYan, Zheng while (rb_node) { 3763e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3773e7fbe9cSYan, Zheng if (ceph_frag_compare(frag->frag, id) >= 0) { 3783e7fbe9cSYan, Zheng if (frag->frag != id) 3793e7fbe9cSYan, Zheng frag = NULL; 3803e7fbe9cSYan, Zheng else 3813e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3823e7fbe9cSYan, Zheng break; 3833e7fbe9cSYan, Zheng } 3843e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 385a4b7431fSYan, Zheng /* delete stale split/leaf node */ 386a4b7431fSYan, Zheng if (frag->split_by > 0 || 387a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 3883e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 3891b1bc16dSYan, Zheng if (frag->split_by > 0) 3901b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 3913e7fbe9cSYan, Zheng kfree(frag); 392a4b7431fSYan, Zheng } 3933e7fbe9cSYan, Zheng frag = NULL; 3943e7fbe9cSYan, Zheng } 3953e7fbe9cSYan, Zheng if (!frag) { 3963e7fbe9cSYan, Zheng frag = __get_or_create_frag(ci, id); 3973e7fbe9cSYan, Zheng if (IS_ERR(frag)) 3983e7fbe9cSYan, Zheng continue; 3993e7fbe9cSYan, Zheng } 4001b1bc16dSYan, Zheng if (frag->split_by == 0) 4011b1bc16dSYan, Zheng ci->i_fragtree_nsplits++; 4021b1bc16dSYan, Zheng frag->split_by = split_by; 4033e7fbe9cSYan, Zheng dout(" frag %x split by %d\n", frag->frag, frag->split_by); 404a4b7431fSYan, Zheng prev_frag = frag; 4053e7fbe9cSYan, Zheng } 4063e7fbe9cSYan, Zheng while (rb_node) { 4073e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 4083e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 409a4b7431fSYan, Zheng /* delete stale split/leaf node */ 410a4b7431fSYan, Zheng if (frag->split_by > 0 || 411a4b7431fSYan, Zheng !is_frag_child(frag->frag, prev_frag)) { 4123e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 4131b1bc16dSYan, Zheng if (frag->split_by > 0) 4141b1bc16dSYan, Zheng ci->i_fragtree_nsplits--; 4153e7fbe9cSYan, Zheng kfree(frag); 4163e7fbe9cSYan, Zheng } 417a4b7431fSYan, Zheng } 4183e7fbe9cSYan, Zheng out_unlock: 4193e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 4203e7fbe9cSYan, Zheng return 0; 4213e7fbe9cSYan, Zheng } 422355da1ebSSage Weil 423355da1ebSSage Weil /* 424355da1ebSSage Weil * initialize a newly allocated inode. 425355da1ebSSage Weil */ 426355da1ebSSage Weil struct inode *ceph_alloc_inode(struct super_block *sb) 427355da1ebSSage Weil { 428355da1ebSSage Weil struct ceph_inode_info *ci; 429355da1ebSSage Weil int i; 430355da1ebSSage Weil 431355da1ebSSage Weil ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); 432355da1ebSSage Weil if (!ci) 433355da1ebSSage Weil return NULL; 434355da1ebSSage Weil 435355da1ebSSage Weil dout("alloc_inode %p\n", &ci->vfs_inode); 436355da1ebSSage Weil 437be655596SSage Weil spin_lock_init(&ci->i_ceph_lock); 438be655596SSage Weil 439355da1ebSSage Weil ci->i_version = 0; 44031c542a1SYan, Zheng ci->i_inline_version = 0; 441355da1ebSSage Weil ci->i_time_warp_seq = 0; 442355da1ebSSage Weil ci->i_ceph_flags = 0; 443fdd4e158SYan, Zheng atomic64_set(&ci->i_ordered_count, 1); 444fdd4e158SYan, Zheng atomic64_set(&ci->i_release_count, 1); 445fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], 0); 446fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], 0); 447355da1ebSSage Weil ci->i_symlink = NULL; 448355da1ebSSage Weil 449fb18a575SLuis Henriques ci->i_max_bytes = 0; 450fb18a575SLuis Henriques ci->i_max_files = 0; 451fb18a575SLuis Henriques 4526c0f3af7SSage Weil memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); 453785892feSJeff Layton memset(&ci->i_cached_layout, 0, sizeof(ci->i_cached_layout)); 45430c156d9SYan, Zheng RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL); 4556c0f3af7SSage Weil 456355da1ebSSage Weil ci->i_fragtree = RB_ROOT; 457355da1ebSSage Weil mutex_init(&ci->i_fragtree_mutex); 458355da1ebSSage Weil 459355da1ebSSage Weil ci->i_xattrs.blob = NULL; 460355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 461355da1ebSSage Weil ci->i_xattrs.dirty = false; 462355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 463355da1ebSSage Weil ci->i_xattrs.count = 0; 464355da1ebSSage Weil ci->i_xattrs.names_size = 0; 465355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 466355da1ebSSage Weil ci->i_xattrs.version = 0; 467355da1ebSSage Weil ci->i_xattrs.index_version = 0; 468355da1ebSSage Weil 469355da1ebSSage Weil ci->i_caps = RB_ROOT; 470355da1ebSSage Weil ci->i_auth_cap = NULL; 471355da1ebSSage Weil ci->i_dirty_caps = 0; 472355da1ebSSage Weil ci->i_flushing_caps = 0; 473355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_dirty_item); 474355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_flushing_item); 475f66fd9f0SYan, Zheng ci->i_prealloc_cap_flush = NULL; 476e4500b5eSYan, Zheng INIT_LIST_HEAD(&ci->i_cap_flush_list); 477355da1ebSSage Weil init_waitqueue_head(&ci->i_cap_wq); 478355da1ebSSage Weil ci->i_hold_caps_max = 0; 479355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_delay_list); 480355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_snaps); 481355da1ebSSage Weil ci->i_head_snapc = NULL; 482355da1ebSSage Weil ci->i_snap_caps = 0; 483355da1ebSSage Weil 484719a2514SYan, Zheng ci->i_last_rd = ci->i_last_wr = jiffies - 3600 * HZ; 485774a6a11SYan, Zheng for (i = 0; i < CEPH_FILE_MODE_BITS; i++) 486355da1ebSSage Weil ci->i_nr_by_mode[i] = 0; 487355da1ebSSage Weil 488b0d7c223SYan, Zheng mutex_init(&ci->i_truncate_mutex); 489355da1ebSSage Weil ci->i_truncate_seq = 0; 490355da1ebSSage Weil ci->i_truncate_size = 0; 491355da1ebSSage Weil ci->i_truncate_pending = 0; 492355da1ebSSage Weil 493355da1ebSSage Weil ci->i_max_size = 0; 494355da1ebSSage Weil ci->i_reported_size = 0; 495355da1ebSSage Weil ci->i_wanted_max_size = 0; 496355da1ebSSage Weil ci->i_requested_max_size = 0; 497355da1ebSSage Weil 498355da1ebSSage Weil ci->i_pin_ref = 0; 499355da1ebSSage Weil ci->i_rd_ref = 0; 500355da1ebSSage Weil ci->i_rdcache_ref = 0; 501355da1ebSSage Weil ci->i_wr_ref = 0; 502d3d0720dSHenry C Chang ci->i_wb_ref = 0; 503f85122afSJeff Layton ci->i_fx_ref = 0; 504355da1ebSSage Weil ci->i_wrbuffer_ref = 0; 505355da1ebSSage Weil ci->i_wrbuffer_ref_head = 0; 50689aa5930SYan, Zheng atomic_set(&ci->i_filelock_ref, 0); 5071e9c2eb6SYan, Zheng atomic_set(&ci->i_shared_gen, 1); 508355da1ebSSage Weil ci->i_rdcache_gen = 0; 509355da1ebSSage Weil ci->i_rdcache_revoking = 0; 510355da1ebSSage Weil 511355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_dirops); 51268cd5b4bSYan, Zheng INIT_LIST_HEAD(&ci->i_unsafe_iops); 513355da1ebSSage Weil spin_lock_init(&ci->i_unsafe_lock); 514355da1ebSSage Weil 515355da1ebSSage Weil ci->i_snap_realm = NULL; 516355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_realm_item); 517355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_flush_item); 518355da1ebSSage Weil 5191cf89a8dSYan, Zheng INIT_WORK(&ci->i_work, ceph_inode_work); 5201cf89a8dSYan, Zheng ci->i_work_mask = 0; 521245ce991SJeff Layton memset(&ci->i_btime, '\0', sizeof(ci->i_btime)); 522355da1ebSSage Weil 52399ccbd22SMilosz Tanski ceph_fscache_inode_init(ci); 52499ccbd22SMilosz Tanski 525f4b97866SYan, Zheng ci->i_meta_err = 0; 526f4b97866SYan, Zheng 527355da1ebSSage Weil return &ci->vfs_inode; 528355da1ebSSage Weil } 529355da1ebSSage Weil 530cfa6d412SAl Viro void ceph_free_inode(struct inode *inode) 531fa0d7e3dSNick Piggin { 532fa0d7e3dSNick Piggin struct ceph_inode_info *ci = ceph_inode(inode); 533fa0d7e3dSNick Piggin 534daf5cc27SAl Viro kfree(ci->i_symlink); 535fa0d7e3dSNick Piggin kmem_cache_free(ceph_inode_cachep, ci); 536fa0d7e3dSNick Piggin } 537fa0d7e3dSNick Piggin 53887bc5b89SYan, Zheng void ceph_evict_inode(struct inode *inode) 539355da1ebSSage Weil { 540355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 541355da1ebSSage Weil struct ceph_inode_frag *frag; 542355da1ebSSage Weil struct rb_node *n; 543355da1ebSSage Weil 54487bc5b89SYan, Zheng dout("evict_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); 54587bc5b89SYan, Zheng 54687bc5b89SYan, Zheng truncate_inode_pages_final(&inode->i_data); 54787bc5b89SYan, Zheng clear_inode(inode); 548355da1ebSSage Weil 54999ccbd22SMilosz Tanski ceph_fscache_unregister_inode_cookie(ci); 55099ccbd22SMilosz Tanski 551d6e47819SYan, Zheng __ceph_remove_caps(ci); 552355da1ebSSage Weil 553d557c48dSLuis Henriques if (__ceph_has_any_quota(ci)) 554d557c48dSLuis Henriques ceph_adjust_quota_realms_count(inode, false); 555d557c48dSLuis Henriques 5568b218b8aSSage Weil /* 5578b218b8aSSage Weil * we may still have a snap_realm reference if there are stray 558d9df2783SYan, Zheng * caps in i_snap_caps. 5598b218b8aSSage Weil */ 5608b218b8aSSage Weil if (ci->i_snap_realm) { 5612678da88SXiubo Li struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); 56275c9627eSYan, Zheng if (ceph_snap(inode) == CEPH_NOSNAP) { 5638b218b8aSSage Weil struct ceph_snap_realm *realm = ci->i_snap_realm; 56475c9627eSYan, Zheng dout(" dropping residual ref to snap realm %p\n", 56575c9627eSYan, Zheng realm); 5668b218b8aSSage Weil spin_lock(&realm->inodes_with_caps_lock); 5678b218b8aSSage Weil list_del_init(&ci->i_snap_realm_item); 568e3161f17SLuis Henriques ci->i_snap_realm = NULL; 569e3161f17SLuis Henriques if (realm->ino == ci->i_vino.ino) 570e3161f17SLuis Henriques realm->inode = NULL; 5718b218b8aSSage Weil spin_unlock(&realm->inodes_with_caps_lock); 5728b218b8aSSage Weil ceph_put_snap_realm(mdsc, realm); 57375c9627eSYan, Zheng } else { 57475c9627eSYan, Zheng ceph_put_snapid_map(mdsc, ci->i_snapid_map); 57575c9627eSYan, Zheng ci->i_snap_realm = NULL; 57675c9627eSYan, Zheng } 5778b218b8aSSage Weil } 5788b218b8aSSage Weil 579355da1ebSSage Weil while ((n = rb_first(&ci->i_fragtree)) != NULL) { 580355da1ebSSage Weil frag = rb_entry(n, struct ceph_inode_frag, node); 581355da1ebSSage Weil rb_erase(n, &ci->i_fragtree); 582355da1ebSSage Weil kfree(frag); 583355da1ebSSage Weil } 5841b1bc16dSYan, Zheng ci->i_fragtree_nsplits = 0; 585355da1ebSSage Weil 586355da1ebSSage Weil __ceph_destroy_xattrs(ci); 587b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 588355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 589b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 590355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 591355da1ebSSage Weil 592779fe0fbSYan, Zheng ceph_put_string(rcu_dereference_raw(ci->i_layout.pool_ns)); 593785892feSJeff Layton ceph_put_string(rcu_dereference_raw(ci->i_cached_layout.pool_ns)); 594355da1ebSSage Weil } 595355da1ebSSage Weil 596224a7542SYan, Zheng static inline blkcnt_t calc_inode_blocks(u64 size) 597224a7542SYan, Zheng { 598224a7542SYan, Zheng return (size + (1<<9) - 1) >> 9; 599224a7542SYan, Zheng } 600224a7542SYan, Zheng 601355da1ebSSage Weil /* 602355da1ebSSage Weil * Helpers to fill in size, ctime, mtime, and atime. We have to be 603355da1ebSSage Weil * careful because either the client or MDS may have more up to date 604355da1ebSSage Weil * info, depending on which capabilities are held, and whether 605355da1ebSSage Weil * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime 606355da1ebSSage Weil * and size are monotonically increasing, except when utimes() or 607355da1ebSSage Weil * truncate() increments the corresponding _seq values.) 608355da1ebSSage Weil */ 609355da1ebSSage Weil int ceph_fill_file_size(struct inode *inode, int issued, 610355da1ebSSage Weil u32 truncate_seq, u64 truncate_size, u64 size) 611355da1ebSSage Weil { 612355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 613355da1ebSSage Weil int queue_trunc = 0; 614355da1ebSSage Weil 615355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || 616355da1ebSSage Weil (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { 617355da1ebSSage Weil dout("size %lld -> %llu\n", inode->i_size, size); 618a3d714c3SYan, Zheng if (size > 0 && S_ISDIR(inode->i_mode)) { 619a3d714c3SYan, Zheng pr_err("fill_file_size non-zero size for directory\n"); 620a3d714c3SYan, Zheng size = 0; 621a3d714c3SYan, Zheng } 62299c88e69SYan, Zheng i_size_write(inode, size); 623224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 624355da1ebSSage Weil ci->i_reported_size = size; 625355da1ebSSage Weil if (truncate_seq != ci->i_truncate_seq) { 626355da1ebSSage Weil dout("truncate_seq %u -> %u\n", 627355da1ebSSage Weil ci->i_truncate_seq, truncate_seq); 628355da1ebSSage Weil ci->i_truncate_seq = truncate_seq; 629b0d7c223SYan, Zheng 630b0d7c223SYan, Zheng /* the MDS should have revoked these caps */ 631b0d7c223SYan, Zheng WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | 632b0d7c223SYan, Zheng CEPH_CAP_FILE_RD | 633b0d7c223SYan, Zheng CEPH_CAP_FILE_WR | 634b0d7c223SYan, Zheng CEPH_CAP_FILE_LAZYIO)); 6353d497d85SYehuda Sadeh /* 6363d497d85SYehuda Sadeh * If we hold relevant caps, or in the case where we're 6373d497d85SYehuda Sadeh * not the only client referencing this file and we 6383d497d85SYehuda Sadeh * don't hold those caps, then we need to check whether 6393d497d85SYehuda Sadeh * the file is either opened or mmaped 6403d497d85SYehuda Sadeh */ 641b0d7c223SYan, Zheng if ((issued & (CEPH_CAP_FILE_CACHE| 642b0d7c223SYan, Zheng CEPH_CAP_FILE_BUFFER)) || 6433d497d85SYehuda Sadeh mapping_mapped(inode->i_mapping) || 644719a2514SYan, Zheng __ceph_is_file_opened(ci)) { 645355da1ebSSage Weil ci->i_truncate_pending++; 646355da1ebSSage Weil queue_trunc = 1; 647355da1ebSSage Weil } 648355da1ebSSage Weil } 649355da1ebSSage Weil } 650355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && 651355da1ebSSage Weil ci->i_truncate_size != truncate_size) { 652355da1ebSSage Weil dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, 653355da1ebSSage Weil truncate_size); 654355da1ebSSage Weil ci->i_truncate_size = truncate_size; 655355da1ebSSage Weil } 65699ccbd22SMilosz Tanski 65799ccbd22SMilosz Tanski if (queue_trunc) 65899ccbd22SMilosz Tanski ceph_fscache_invalidate(inode); 65999ccbd22SMilosz Tanski 660355da1ebSSage Weil return queue_trunc; 661355da1ebSSage Weil } 662355da1ebSSage Weil 663355da1ebSSage Weil void ceph_fill_file_time(struct inode *inode, int issued, 6649bbeab41SArnd Bergmann u64 time_warp_seq, struct timespec64 *ctime, 6659bbeab41SArnd Bergmann struct timespec64 *mtime, struct timespec64 *atime) 666355da1ebSSage Weil { 667355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 668355da1ebSSage Weil int warn = 0; 669355da1ebSSage Weil 670355da1ebSSage Weil if (issued & (CEPH_CAP_FILE_EXCL| 671355da1ebSSage Weil CEPH_CAP_FILE_WR| 672d8672d64SSage Weil CEPH_CAP_FILE_BUFFER| 673d8672d64SSage Weil CEPH_CAP_AUTH_EXCL| 674d8672d64SSage Weil CEPH_CAP_XATTR_EXCL)) { 675ffdeec7aSYan, Zheng if (ci->i_version == 0 || 6769bbeab41SArnd Bergmann timespec64_compare(ctime, &inode->i_ctime) > 0) { 67713442b03SDeepa Dinamani dout("ctime %lld.%09ld -> %lld.%09ld inc w/ cap\n", 6789bbeab41SArnd Bergmann inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 6799bbeab41SArnd Bergmann ctime->tv_sec, ctime->tv_nsec); 6809bbeab41SArnd Bergmann inode->i_ctime = *ctime; 681355da1ebSSage Weil } 682ffdeec7aSYan, Zheng if (ci->i_version == 0 || 683ffdeec7aSYan, Zheng ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { 684355da1ebSSage Weil /* the MDS did a utimes() */ 68513442b03SDeepa Dinamani dout("mtime %lld.%09ld -> %lld.%09ld " 686355da1ebSSage Weil "tw %d -> %d\n", 6879bbeab41SArnd Bergmann inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 6889bbeab41SArnd Bergmann mtime->tv_sec, mtime->tv_nsec, 689355da1ebSSage Weil ci->i_time_warp_seq, (int)time_warp_seq); 690355da1ebSSage Weil 6919bbeab41SArnd Bergmann inode->i_mtime = *mtime; 6929bbeab41SArnd Bergmann inode->i_atime = *atime; 693355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 694355da1ebSSage Weil } else if (time_warp_seq == ci->i_time_warp_seq) { 695355da1ebSSage Weil /* nobody did utimes(); take the max */ 6969bbeab41SArnd Bergmann if (timespec64_compare(mtime, &inode->i_mtime) > 0) { 69713442b03SDeepa Dinamani dout("mtime %lld.%09ld -> %lld.%09ld inc\n", 6989bbeab41SArnd Bergmann inode->i_mtime.tv_sec, 699355da1ebSSage Weil inode->i_mtime.tv_nsec, 7009bbeab41SArnd Bergmann mtime->tv_sec, mtime->tv_nsec); 7019bbeab41SArnd Bergmann inode->i_mtime = *mtime; 702355da1ebSSage Weil } 7039bbeab41SArnd Bergmann if (timespec64_compare(atime, &inode->i_atime) > 0) { 70413442b03SDeepa Dinamani dout("atime %lld.%09ld -> %lld.%09ld inc\n", 7059bbeab41SArnd Bergmann inode->i_atime.tv_sec, 706355da1ebSSage Weil inode->i_atime.tv_nsec, 7079bbeab41SArnd Bergmann atime->tv_sec, atime->tv_nsec); 7089bbeab41SArnd Bergmann inode->i_atime = *atime; 709355da1ebSSage Weil } 710355da1ebSSage Weil } else if (issued & CEPH_CAP_FILE_EXCL) { 711355da1ebSSage Weil /* we did a utimes(); ignore mds values */ 712355da1ebSSage Weil } else { 713355da1ebSSage Weil warn = 1; 714355da1ebSSage Weil } 715355da1ebSSage Weil } else { 716d8672d64SSage Weil /* we have no write|excl caps; whatever the MDS says is true */ 717355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { 7189bbeab41SArnd Bergmann inode->i_ctime = *ctime; 7199bbeab41SArnd Bergmann inode->i_mtime = *mtime; 7209bbeab41SArnd Bergmann inode->i_atime = *atime; 721355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 722355da1ebSSage Weil } else { 723355da1ebSSage Weil warn = 1; 724355da1ebSSage Weil } 725355da1ebSSage Weil } 726355da1ebSSage Weil if (warn) /* time_warp_seq shouldn't go backwards */ 727355da1ebSSage Weil dout("%p mds time_warp_seq %llu < %u\n", 728355da1ebSSage Weil inode, time_warp_seq, ci->i_time_warp_seq); 729355da1ebSSage Weil } 730355da1ebSSage Weil 731355da1ebSSage Weil /* 732355da1ebSSage Weil * Populate an inode based on info from mds. May be called on new or 733355da1ebSSage Weil * existing inodes. 734355da1ebSSage Weil */ 735966c7160SJeff Layton int ceph_fill_inode(struct inode *inode, struct page *locked_page, 736355da1ebSSage Weil struct ceph_mds_reply_info_in *iinfo, 737355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo, 73857c21994SJeff Layton struct ceph_mds_session *session, int cap_fmode, 739355da1ebSSage Weil struct ceph_cap_reservation *caps_reservation) 740355da1ebSSage Weil { 7412678da88SXiubo Li struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); 742355da1ebSSage Weil struct ceph_mds_reply_inode *info = iinfo->in; 743355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 7442af54a72SYan, Zheng int issued, new_issued, info_caps; 7459bbeab41SArnd Bergmann struct timespec64 mtime, atime, ctime; 746355da1ebSSage Weil struct ceph_buffer *xattr_blob = NULL; 747af8a85a4SLuis Henriques struct ceph_buffer *old_blob = NULL; 748779fe0fbSYan, Zheng struct ceph_string *pool_ns = NULL; 749d9df2783SYan, Zheng struct ceph_cap *new_cap = NULL; 750355da1ebSSage Weil int err = 0; 751d9df2783SYan, Zheng bool wake = false; 752f98a128aSYan, Zheng bool queue_trunc = false; 753f98a128aSYan, Zheng bool new_version = false; 75431c542a1SYan, Zheng bool fill_inline = false; 755355da1ebSSage Weil 756966c7160SJeff Layton dout("%s %p ino %llx.%llx v %llu had %llu\n", __func__, 757355da1ebSSage Weil inode, ceph_vinop(inode), le64_to_cpu(info->version), 758355da1ebSSage Weil ci->i_version); 759355da1ebSSage Weil 7602af54a72SYan, Zheng info_caps = le32_to_cpu(info->cap.caps); 7612af54a72SYan, Zheng 762d9df2783SYan, Zheng /* prealloc new cap struct */ 7639a6bed4fSJeff Layton if (info_caps && ceph_snap(inode) == CEPH_NOSNAP) { 764d9df2783SYan, Zheng new_cap = ceph_get_cap(mdsc, caps_reservation); 7659a6bed4fSJeff Layton if (!new_cap) 7669a6bed4fSJeff Layton return -ENOMEM; 7679a6bed4fSJeff Layton } 768d9df2783SYan, Zheng 769355da1ebSSage Weil /* 770355da1ebSSage Weil * prealloc xattr data, if it looks like we'll need it. only 771355da1ebSSage Weil * if len > 4 (meaning there are actually xattrs; the first 4 772355da1ebSSage Weil * bytes are the xattr count). 773355da1ebSSage Weil */ 774355da1ebSSage Weil if (iinfo->xattr_len > 4) { 775b6c1d5b8SSage Weil xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); 776355da1ebSSage Weil if (!xattr_blob) 777966c7160SJeff Layton pr_err("%s ENOMEM xattr blob %d bytes\n", __func__, 778355da1ebSSage Weil iinfo->xattr_len); 779355da1ebSSage Weil } 780355da1ebSSage Weil 781779fe0fbSYan, Zheng if (iinfo->pool_ns_len > 0) 782779fe0fbSYan, Zheng pool_ns = ceph_find_or_create_string(iinfo->pool_ns_data, 783779fe0fbSYan, Zheng iinfo->pool_ns_len); 784779fe0fbSYan, Zheng 78575c9627eSYan, Zheng if (ceph_snap(inode) != CEPH_NOSNAP && !ci->i_snapid_map) 78675c9627eSYan, Zheng ci->i_snapid_map = ceph_get_snapid_map(mdsc, ceph_snap(inode)); 78775c9627eSYan, Zheng 788be655596SSage Weil spin_lock(&ci->i_ceph_lock); 789355da1ebSSage Weil 790355da1ebSSage Weil /* 791355da1ebSSage Weil * provided version will be odd if inode value is projected, 7928bd59e01SSage Weil * even if stable. skip the update if we have newer stable 7938bd59e01SSage Weil * info (ours>=theirs, e.g. due to racing mds replies), unless 7948bd59e01SSage Weil * we are getting projected (unstable) info (in which case the 7958bd59e01SSage Weil * version is odd, and we want ours>theirs). 7968bd59e01SSage Weil * us them 7978bd59e01SSage Weil * 2 2 skip 7988bd59e01SSage Weil * 3 2 skip 7998bd59e01SSage Weil * 3 3 update 800355da1ebSSage Weil */ 801f98a128aSYan, Zheng if (ci->i_version == 0 || 802f98a128aSYan, Zheng ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 803f98a128aSYan, Zheng le64_to_cpu(info->version) > (ci->i_version & ~1))) 804f98a128aSYan, Zheng new_version = true; 805355da1ebSSage Weil 806a35ead31SJeff Layton /* Update change_attribute */ 807a35ead31SJeff Layton inode_set_max_iversion_raw(inode, iinfo->change_attr); 808a35ead31SJeff Layton 8092af54a72SYan, Zheng __ceph_caps_issued(ci, &issued); 8102af54a72SYan, Zheng issued |= __ceph_caps_dirty(ci); 8112af54a72SYan, Zheng new_issued = ~issued & info_caps; 812355da1ebSSage Weil 813355da1ebSSage Weil /* update inode */ 814355da1ebSSage Weil inode->i_rdev = le32_to_cpu(info->rdev); 81575067034SLuis Henriques /* directories have fl_stripe_unit set to zero */ 81675067034SLuis Henriques if (le32_to_cpu(info->layout.fl_stripe_unit)) 81775067034SLuis Henriques inode->i_blkbits = 81875067034SLuis Henriques fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; 81975067034SLuis Henriques else 82075067034SLuis Henriques inode->i_blkbits = CEPH_BLOCK_SHIFT; 821355da1ebSSage Weil 822d557c48dSLuis Henriques __ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files); 823fb18a575SLuis Henriques 824f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && 825f98a128aSYan, Zheng (issued & CEPH_CAP_AUTH_EXCL) == 0) { 826355da1ebSSage Weil inode->i_mode = le32_to_cpu(info->mode); 827ab871b90SEric W. Biederman inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); 828ab871b90SEric W. Biederman inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); 829355da1ebSSage Weil dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, 830bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 831bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid)); 832245ce991SJeff Layton ceph_decode_timespec64(&ci->i_btime, &iinfo->btime); 833193e7b37SDavid Disseldorp ceph_decode_timespec64(&ci->i_snap_btime, &iinfo->snap_btime); 834355da1ebSSage Weil } 835355da1ebSSage Weil 836f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && 837f98a128aSYan, Zheng (issued & CEPH_CAP_LINK_EXCL) == 0) 838bfe86848SMiklos Szeredi set_nlink(inode, le32_to_cpu(info->nlink)); 839355da1ebSSage Weil 840f98a128aSYan, Zheng if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { 841355da1ebSSage Weil /* be careful with mtime, atime, size */ 8429bbeab41SArnd Bergmann ceph_decode_timespec64(&atime, &info->atime); 8439bbeab41SArnd Bergmann ceph_decode_timespec64(&mtime, &info->mtime); 8449bbeab41SArnd Bergmann ceph_decode_timespec64(&ctime, &info->ctime); 845f98a128aSYan, Zheng ceph_fill_file_time(inode, issued, 846f98a128aSYan, Zheng le32_to_cpu(info->time_warp_seq), 847f98a128aSYan, Zheng &ctime, &mtime, &atime); 848f98a128aSYan, Zheng } 849f98a128aSYan, Zheng 8502af54a72SYan, Zheng if (new_version || (info_caps & CEPH_CAP_FILE_SHARED)) { 8512af54a72SYan, Zheng ci->i_files = le64_to_cpu(info->files); 8522af54a72SYan, Zheng ci->i_subdirs = le64_to_cpu(info->subdirs); 8532af54a72SYan, Zheng } 8542af54a72SYan, Zheng 855f98a128aSYan, Zheng if (new_version || 856f98a128aSYan, Zheng (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { 8577627151eSYan, Zheng s64 old_pool = ci->i_layout.pool_id; 858779fe0fbSYan, Zheng struct ceph_string *old_ns; 859779fe0fbSYan, Zheng 8607627151eSYan, Zheng ceph_file_layout_from_legacy(&ci->i_layout, &info->layout); 861779fe0fbSYan, Zheng old_ns = rcu_dereference_protected(ci->i_layout.pool_ns, 862779fe0fbSYan, Zheng lockdep_is_held(&ci->i_ceph_lock)); 863779fe0fbSYan, Zheng rcu_assign_pointer(ci->i_layout.pool_ns, pool_ns); 864779fe0fbSYan, Zheng 865779fe0fbSYan, Zheng if (ci->i_layout.pool_id != old_pool || pool_ns != old_ns) 86610183a69SYan, Zheng ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; 86710183a69SYan, Zheng 868779fe0fbSYan, Zheng pool_ns = old_ns; 869f98a128aSYan, Zheng 870355da1ebSSage Weil queue_trunc = ceph_fill_file_size(inode, issued, 871355da1ebSSage Weil le32_to_cpu(info->truncate_seq), 872355da1ebSSage Weil le64_to_cpu(info->truncate_size), 873355da1ebSSage Weil le64_to_cpu(info->size)); 874f98a128aSYan, Zheng /* only update max_size on auth cap */ 875f98a128aSYan, Zheng if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 876f98a128aSYan, Zheng ci->i_max_size != le64_to_cpu(info->max_size)) { 877f98a128aSYan, Zheng dout("max_size %lld -> %llu\n", ci->i_max_size, 878f98a128aSYan, Zheng le64_to_cpu(info->max_size)); 879f98a128aSYan, Zheng ci->i_max_size = le64_to_cpu(info->max_size); 880f98a128aSYan, Zheng } 881f98a128aSYan, Zheng } 882355da1ebSSage Weil 88349a9f4f6SYan, Zheng /* layout and rstat are not tracked by capability, update them if 88449a9f4f6SYan, Zheng * the inode info is from auth mds */ 88549a9f4f6SYan, Zheng if (new_version || (info->cap.flags & CEPH_CAP_FLAG_AUTH)) { 88649a9f4f6SYan, Zheng if (S_ISDIR(inode->i_mode)) { 88749a9f4f6SYan, Zheng ci->i_dir_layout = iinfo->dir_layout; 88849a9f4f6SYan, Zheng ci->i_rbytes = le64_to_cpu(info->rbytes); 88949a9f4f6SYan, Zheng ci->i_rfiles = le64_to_cpu(info->rfiles); 89049a9f4f6SYan, Zheng ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); 89108796873SYan, Zheng ci->i_dir_pin = iinfo->dir_pin; 8929bbeab41SArnd Bergmann ceph_decode_timespec64(&ci->i_rctime, &info->rctime); 89349a9f4f6SYan, Zheng } 89449a9f4f6SYan, Zheng } 89549a9f4f6SYan, Zheng 896355da1ebSSage Weil /* xattrs */ 897355da1ebSSage Weil /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ 898508b32d8SYan, Zheng if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && 899355da1ebSSage Weil le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { 900355da1ebSSage Weil if (ci->i_xattrs.blob) 901af8a85a4SLuis Henriques old_blob = ci->i_xattrs.blob; 902355da1ebSSage Weil ci->i_xattrs.blob = xattr_blob; 903355da1ebSSage Weil if (xattr_blob) 904355da1ebSSage Weil memcpy(ci->i_xattrs.blob->vec.iov_base, 905355da1ebSSage Weil iinfo->xattr_data, iinfo->xattr_len); 906355da1ebSSage Weil ci->i_xattrs.version = le64_to_cpu(info->xattr_version); 9077221fe4cSGuangliang Zhao ceph_forget_all_cached_acls(inode); 908ac6713ccSYan, Zheng ceph_security_invalidate_secctx(inode); 909a6424e48SSage Weil xattr_blob = NULL; 910355da1ebSSage Weil } 911355da1ebSSage Weil 912ffdeec7aSYan, Zheng /* finally update i_version */ 913aae1a442SYan, Zheng if (le64_to_cpu(info->version) > ci->i_version) 914ffdeec7aSYan, Zheng ci->i_version = le64_to_cpu(info->version); 915ffdeec7aSYan, Zheng 916355da1ebSSage Weil inode->i_mapping->a_ops = &ceph_aops; 917355da1ebSSage Weil 918355da1ebSSage Weil switch (inode->i_mode & S_IFMT) { 919355da1ebSSage Weil case S_IFIFO: 920355da1ebSSage Weil case S_IFBLK: 921355da1ebSSage Weil case S_IFCHR: 922355da1ebSSage Weil case S_IFSOCK: 9235ba72e60SYan, Zheng inode->i_blkbits = PAGE_SHIFT; 924355da1ebSSage Weil init_special_inode(inode, inode->i_mode, inode->i_rdev); 925355da1ebSSage Weil inode->i_op = &ceph_file_iops; 926355da1ebSSage Weil break; 927355da1ebSSage Weil case S_IFREG: 928355da1ebSSage Weil inode->i_op = &ceph_file_iops; 929355da1ebSSage Weil inode->i_fop = &ceph_file_fops; 930355da1ebSSage Weil break; 931355da1ebSSage Weil case S_IFLNK: 932355da1ebSSage Weil inode->i_op = &ceph_symlink_iops; 933355da1ebSSage Weil if (!ci->i_symlink) { 934810339ecSXi Wang u32 symlen = iinfo->symlink_len; 935355da1ebSSage Weil char *sym; 936355da1ebSSage Weil 937be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 938355da1ebSSage Weil 939224a7542SYan, Zheng if (symlen != i_size_read(inode)) { 940966c7160SJeff Layton pr_err("%s %llx.%llx BAD symlink " 941966c7160SJeff Layton "size %lld\n", __func__, 942966c7160SJeff Layton ceph_vinop(inode), 943224a7542SYan, Zheng i_size_read(inode)); 944224a7542SYan, Zheng i_size_write(inode, symlen); 945224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(symlen); 946224a7542SYan, Zheng } 947810339ecSXi Wang 948355da1ebSSage Weil err = -ENOMEM; 949810339ecSXi Wang sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); 950355da1ebSSage Weil if (!sym) 951355da1ebSSage Weil goto out; 952355da1ebSSage Weil 953be655596SSage Weil spin_lock(&ci->i_ceph_lock); 954355da1ebSSage Weil if (!ci->i_symlink) 955355da1ebSSage Weil ci->i_symlink = sym; 956355da1ebSSage Weil else 957355da1ebSSage Weil kfree(sym); /* lost a race */ 958355da1ebSSage Weil } 959ac194dccSAl Viro inode->i_link = ci->i_symlink; 960355da1ebSSage Weil break; 961355da1ebSSage Weil case S_IFDIR: 962355da1ebSSage Weil inode->i_op = &ceph_dir_iops; 963355da1ebSSage Weil inode->i_fop = &ceph_dir_fops; 964355da1ebSSage Weil break; 965355da1ebSSage Weil default: 966966c7160SJeff Layton pr_err("%s %llx.%llx BAD mode 0%o\n", __func__, 967355da1ebSSage Weil ceph_vinop(inode), inode->i_mode); 968355da1ebSSage Weil } 969355da1ebSSage Weil 970355da1ebSSage Weil /* were we issued a capability? */ 9712af54a72SYan, Zheng if (info_caps) { 972355da1ebSSage Weil if (ceph_snap(inode) == CEPH_NOSNAP) { 973355da1ebSSage Weil ceph_add_cap(inode, session, 974355da1ebSSage Weil le64_to_cpu(info->cap.cap_id), 975135e671eSYan, Zheng info_caps, 976355da1ebSSage Weil le32_to_cpu(info->cap.wanted), 977355da1ebSSage Weil le32_to_cpu(info->cap.seq), 978355da1ebSSage Weil le32_to_cpu(info->cap.mseq), 979355da1ebSSage Weil le64_to_cpu(info->cap.realm), 980d9df2783SYan, Zheng info->cap.flags, &new_cap); 9812f92b3d0SYan, Zheng 9822f92b3d0SYan, Zheng /* set dir completion flag? */ 9832f92b3d0SYan, Zheng if (S_ISDIR(inode->i_mode) && 9842f92b3d0SYan, Zheng ci->i_files == 0 && ci->i_subdirs == 0 && 9852af54a72SYan, Zheng (info_caps & CEPH_CAP_FILE_SHARED) && 9862f92b3d0SYan, Zheng (issued & CEPH_CAP_FILE_EXCL) == 0 && 9872f92b3d0SYan, Zheng !__ceph_dir_is_complete(ci)) { 9882f92b3d0SYan, Zheng dout(" marking %p complete (empty)\n", inode); 989fdd4e158SYan, Zheng i_size_write(inode, 0); 9902f92b3d0SYan, Zheng __ceph_dir_set_complete(ci, 991fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count), 992fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count)); 9932f92b3d0SYan, Zheng } 9942f92b3d0SYan, Zheng 995d9df2783SYan, Zheng wake = true; 996355da1ebSSage Weil } else { 997355da1ebSSage Weil dout(" %p got snap_caps %s\n", inode, 9982af54a72SYan, Zheng ceph_cap_string(info_caps)); 9992af54a72SYan, Zheng ci->i_snap_caps |= info_caps; 1000355da1ebSSage Weil } 1001355da1ebSSage Weil } 100231c542a1SYan, Zheng 100331c542a1SYan, Zheng if (iinfo->inline_version > 0 && 100431c542a1SYan, Zheng iinfo->inline_version >= ci->i_inline_version) { 100531c542a1SYan, Zheng int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; 100631c542a1SYan, Zheng ci->i_inline_version = iinfo->inline_version; 100731c542a1SYan, Zheng if (ci->i_inline_version != CEPH_INLINE_NONE && 10082af54a72SYan, Zheng (locked_page || (info_caps & cache_caps))) 100931c542a1SYan, Zheng fill_inline = true; 101031c542a1SYan, Zheng } 101131c542a1SYan, Zheng 1012719a2514SYan, Zheng if (cap_fmode >= 0) { 1013719a2514SYan, Zheng if (!info_caps) 1014719a2514SYan, Zheng pr_warn("mds issued no caps on %llx.%llx\n", 1015719a2514SYan, Zheng ceph_vinop(inode)); 1016719a2514SYan, Zheng __ceph_touch_fmode(ci, mdsc, cap_fmode); 1017719a2514SYan, Zheng } 1018719a2514SYan, Zheng 1019355da1ebSSage Weil spin_unlock(&ci->i_ceph_lock); 1020355da1ebSSage Weil 102131c542a1SYan, Zheng if (fill_inline) 102201deead0SYan, Zheng ceph_fill_inline_data(inode, locked_page, 102331c542a1SYan, Zheng iinfo->inline_data, iinfo->inline_len); 102431c542a1SYan, Zheng 1025d9df2783SYan, Zheng if (wake) 1026d9df2783SYan, Zheng wake_up_all(&ci->i_cap_wq); 1027d9df2783SYan, Zheng 1028355da1ebSSage Weil /* queue truncate if we saw i_size decrease */ 1029355da1ebSSage Weil if (queue_trunc) 1030355da1ebSSage Weil ceph_queue_vmtruncate(inode); 1031355da1ebSSage Weil 1032355da1ebSSage Weil /* populate frag tree */ 10333e7fbe9cSYan, Zheng if (S_ISDIR(inode->i_mode)) 10343e7fbe9cSYan, Zheng ceph_fill_fragtree(inode, &info->fragtree, dirinfo); 1035355da1ebSSage Weil 1036355da1ebSSage Weil /* update delegation info? */ 1037355da1ebSSage Weil if (dirinfo) 1038355da1ebSSage Weil ceph_fill_dirfrag(inode, dirinfo); 1039355da1ebSSage Weil 1040355da1ebSSage Weil err = 0; 1041355da1ebSSage Weil out: 1042d9df2783SYan, Zheng if (new_cap) 1043d9df2783SYan, Zheng ceph_put_cap(mdsc, new_cap); 1044af8a85a4SLuis Henriques ceph_buffer_put(old_blob); 1045355da1ebSSage Weil ceph_buffer_put(xattr_blob); 1046779fe0fbSYan, Zheng ceph_put_string(pool_ns); 1047355da1ebSSage Weil return err; 1048355da1ebSSage Weil } 1049355da1ebSSage Weil 1050355da1ebSSage Weil /* 1051543212b3SYan, Zheng * caller should hold session s_mutex and dentry->d_lock. 1052355da1ebSSage Weil */ 1053543212b3SYan, Zheng static void __update_dentry_lease(struct inode *dir, struct dentry *dentry, 1054355da1ebSSage Weil struct ceph_mds_reply_lease *lease, 1055355da1ebSSage Weil struct ceph_mds_session *session, 1056f5d55f03SJeff Layton unsigned long from_time, 1057543212b3SYan, Zheng struct ceph_mds_session **old_lease_session) 1058355da1ebSSage Weil { 1059355da1ebSSage Weil struct ceph_dentry_info *di = ceph_dentry(dentry); 1060f5e17aedSJeff Layton unsigned mask = le16_to_cpu(lease->mask); 1061355da1ebSSage Weil long unsigned duration = le32_to_cpu(lease->duration_ms); 1062355da1ebSSage Weil long unsigned ttl = from_time + (duration * HZ) / 1000; 1063355da1ebSSage Weil long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; 1064355da1ebSSage Weil 10652f90b852SSage Weil dout("update_dentry_lease %p duration %lu ms ttl %lu\n", 10662f90b852SSage Weil dentry, duration, ttl); 1067355da1ebSSage Weil 106818fc8abdSAl Viro /* only track leases on regular dentries */ 106918fc8abdSAl Viro if (ceph_snap(dir) != CEPH_NOSNAP) 1070543212b3SYan, Zheng return; 107118fc8abdSAl Viro 1072f5e17aedSJeff Layton if (mask & CEPH_LEASE_PRIMARY_LINK) 1073f5e17aedSJeff Layton di->flags |= CEPH_DENTRY_PRIMARY_LINK; 1074f5e17aedSJeff Layton else 1075f5e17aedSJeff Layton di->flags &= ~CEPH_DENTRY_PRIMARY_LINK; 1076f5e17aedSJeff Layton 107797aeb6bfSYan, Zheng di->lease_shared_gen = atomic_read(&ceph_inode(dir)->i_shared_gen); 1078f5e17aedSJeff Layton if (!(mask & CEPH_LEASE_VALID)) { 107937c4efc1SYan, Zheng __ceph_dentry_dir_lease_touch(di); 1080543212b3SYan, Zheng return; 108137c4efc1SYan, Zheng } 1082355da1ebSSage Weil 1083355da1ebSSage Weil if (di->lease_gen == session->s_cap_gen && 10849b16f03cSMiklos Szeredi time_before(ttl, di->time)) 1085543212b3SYan, Zheng return; /* we already have a newer lease. */ 1086355da1ebSSage Weil 1087481f001fSYan, Zheng if (di->lease_session && di->lease_session != session) { 1088543212b3SYan, Zheng *old_lease_session = di->lease_session; 1089481f001fSYan, Zheng di->lease_session = NULL; 1090481f001fSYan, Zheng } 1091355da1ebSSage Weil 1092355da1ebSSage Weil if (!di->lease_session) 1093355da1ebSSage Weil di->lease_session = ceph_get_mds_session(session); 1094355da1ebSSage Weil di->lease_gen = session->s_cap_gen; 1095355da1ebSSage Weil di->lease_seq = le32_to_cpu(lease->seq); 1096355da1ebSSage Weil di->lease_renew_after = half_ttl; 1097355da1ebSSage Weil di->lease_renew_from = 0; 10989b16f03cSMiklos Szeredi di->time = ttl; 109937c4efc1SYan, Zheng 110037c4efc1SYan, Zheng __ceph_dentry_lease_touch(di); 1101543212b3SYan, Zheng } 1102543212b3SYan, Zheng 1103543212b3SYan, Zheng static inline void update_dentry_lease(struct inode *dir, 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 { 1108543212b3SYan, Zheng struct ceph_mds_session *old_lease_session = NULL; 1109543212b3SYan, Zheng spin_lock(&dentry->d_lock); 1110543212b3SYan, Zheng __update_dentry_lease(dir, dentry, lease, session, from_time, 1111543212b3SYan, Zheng &old_lease_session); 1112543212b3SYan, Zheng spin_unlock(&dentry->d_lock); 1113543212b3SYan, Zheng if (old_lease_session) 1114543212b3SYan, Zheng ceph_put_mds_session(old_lease_session); 1115543212b3SYan, Zheng } 1116543212b3SYan, Zheng 1117543212b3SYan, Zheng /* 1118543212b3SYan, Zheng * update dentry lease without having parent inode locked 1119543212b3SYan, Zheng */ 1120543212b3SYan, Zheng static void update_dentry_lease_careful(struct dentry *dentry, 1121543212b3SYan, Zheng struct ceph_mds_reply_lease *lease, 1122543212b3SYan, Zheng struct ceph_mds_session *session, 1123543212b3SYan, Zheng unsigned long from_time, 1124543212b3SYan, Zheng char *dname, u32 dname_len, 1125543212b3SYan, Zheng struct ceph_vino *pdvino, 1126543212b3SYan, Zheng struct ceph_vino *ptvino) 1127543212b3SYan, Zheng 1128543212b3SYan, Zheng { 1129543212b3SYan, Zheng struct inode *dir; 1130543212b3SYan, Zheng struct ceph_mds_session *old_lease_session = NULL; 1131543212b3SYan, Zheng 1132543212b3SYan, Zheng spin_lock(&dentry->d_lock); 1133543212b3SYan, Zheng /* make sure dentry's name matches target */ 1134543212b3SYan, Zheng if (dentry->d_name.len != dname_len || 1135543212b3SYan, Zheng memcmp(dentry->d_name.name, dname, dname_len)) 1136543212b3SYan, Zheng goto out_unlock; 1137543212b3SYan, Zheng 1138543212b3SYan, Zheng dir = d_inode(dentry->d_parent); 1139543212b3SYan, Zheng /* make sure parent matches dvino */ 1140543212b3SYan, Zheng if (!ceph_ino_compare(dir, pdvino)) 1141543212b3SYan, Zheng goto out_unlock; 1142543212b3SYan, Zheng 1143543212b3SYan, Zheng /* make sure dentry's inode matches target. NULL ptvino means that 1144543212b3SYan, Zheng * we expect a negative dentry */ 1145543212b3SYan, Zheng if (ptvino) { 1146543212b3SYan, Zheng if (d_really_is_negative(dentry)) 1147543212b3SYan, Zheng goto out_unlock; 1148543212b3SYan, Zheng if (!ceph_ino_compare(d_inode(dentry), ptvino)) 1149543212b3SYan, Zheng goto out_unlock; 1150543212b3SYan, Zheng } else { 1151543212b3SYan, Zheng if (d_really_is_positive(dentry)) 1152543212b3SYan, Zheng goto out_unlock; 1153543212b3SYan, Zheng } 1154543212b3SYan, Zheng 1155543212b3SYan, Zheng __update_dentry_lease(dir, dentry, lease, session, 1156543212b3SYan, Zheng from_time, &old_lease_session); 1157355da1ebSSage Weil out_unlock: 1158355da1ebSSage Weil spin_unlock(&dentry->d_lock); 1159481f001fSYan, Zheng if (old_lease_session) 1160481f001fSYan, Zheng ceph_put_mds_session(old_lease_session); 1161355da1ebSSage Weil } 1162355da1ebSSage Weil 1163355da1ebSSage Weil /* 11641cd3935bSSage Weil * splice a dentry to an inode. 11651cd3935bSSage Weil * caller must hold directory i_mutex for this to be safe. 11661cd3935bSSage Weil */ 11672bf996acSYan, Zheng static int splice_dentry(struct dentry **pdn, struct inode *in) 11681cd3935bSSage Weil { 11692bf996acSYan, Zheng struct dentry *dn = *pdn; 11701cd3935bSSage Weil struct dentry *realdn; 11711cd3935bSSage Weil 11722b0143b5SDavid Howells BUG_ON(d_inode(dn)); 11731cd3935bSSage Weil 11745495c2d0SYan, Zheng if (S_ISDIR(in->i_mode)) { 11755495c2d0SYan, Zheng /* If inode is directory, d_splice_alias() below will remove 11765495c2d0SYan, Zheng * 'realdn' from its origin parent. We need to ensure that 11775495c2d0SYan, Zheng * origin parent's readdir cache will not reference 'realdn' 11785495c2d0SYan, Zheng */ 11795495c2d0SYan, Zheng realdn = d_find_any_alias(in); 11805495c2d0SYan, Zheng if (realdn) { 11815495c2d0SYan, Zheng struct ceph_dentry_info *di = ceph_dentry(realdn); 11825495c2d0SYan, Zheng spin_lock(&realdn->d_lock); 11835495c2d0SYan, Zheng 11845495c2d0SYan, Zheng realdn->d_op->d_prune(realdn); 11855495c2d0SYan, Zheng 11865495c2d0SYan, Zheng di->time = jiffies; 11875495c2d0SYan, Zheng di->lease_shared_gen = 0; 11885495c2d0SYan, Zheng di->offset = 0; 11895495c2d0SYan, Zheng 11905495c2d0SYan, Zheng spin_unlock(&realdn->d_lock); 11915495c2d0SYan, Zheng dput(realdn); 11925495c2d0SYan, Zheng } 11935495c2d0SYan, Zheng } 11945495c2d0SYan, Zheng 11951cd3935bSSage Weil /* dn must be unhashed */ 11961cd3935bSSage Weil if (!d_unhashed(dn)) 11971cd3935bSSage Weil d_drop(dn); 119841d28bcaSAl Viro realdn = d_splice_alias(in, dn); 11991cd3935bSSage Weil if (IS_ERR(realdn)) { 1200d69ed05aSSage Weil pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", 1201d69ed05aSSage Weil PTR_ERR(realdn), dn, in, ceph_vinop(in)); 12022bf996acSYan, Zheng return PTR_ERR(realdn); 12032bf996acSYan, Zheng } 12042bf996acSYan, Zheng 12052bf996acSYan, Zheng if (realdn) { 12061cd3935bSSage Weil dout("dn %p (%d) spliced with %p (%d) " 12071cd3935bSSage Weil "inode %p ino %llx.%llx\n", 120884d08fa8SAl Viro dn, d_count(dn), 120984d08fa8SAl Viro realdn, d_count(realdn), 12102b0143b5SDavid Howells d_inode(realdn), ceph_vinop(d_inode(realdn))); 12111cd3935bSSage Weil dput(dn); 12122bf996acSYan, Zheng *pdn = realdn; 12131cd3935bSSage Weil } else { 12141cd3935bSSage Weil BUG_ON(!ceph_dentry(dn)); 12151cd3935bSSage Weil dout("dn %p attached to %p ino %llx.%llx\n", 12162b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn))); 12171cd3935bSSage Weil } 12182bf996acSYan, Zheng return 0; 12191cd3935bSSage Weil } 12201cd3935bSSage Weil 12211cd3935bSSage Weil /* 1222355da1ebSSage Weil * Incorporate results into the local cache. This is either just 1223355da1ebSSage Weil * one inode, or a directory, dentry, and possibly linked-to inode (e.g., 1224355da1ebSSage Weil * after a lookup). 1225355da1ebSSage Weil * 1226355da1ebSSage Weil * A reply may contain 1227355da1ebSSage Weil * a directory inode along with a dentry. 1228355da1ebSSage Weil * and/or a target inode 1229355da1ebSSage Weil * 1230355da1ebSSage Weil * Called with snap_rwsem (read). 1231355da1ebSSage Weil */ 1232f5a03b08SJeff Layton int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req) 1233355da1ebSSage Weil { 1234f5a03b08SJeff Layton struct ceph_mds_session *session = req->r_session; 1235355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1236355da1ebSSage Weil struct inode *in = NULL; 1237f5d55f03SJeff Layton struct ceph_vino tvino, dvino; 12383d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(sb); 1239355da1ebSSage Weil int err = 0; 1240355da1ebSSage Weil 1241355da1ebSSage Weil dout("fill_trace %p is_dentry %d is_target %d\n", req, 1242355da1ebSSage Weil rinfo->head->is_dentry, rinfo->head->is_target); 1243355da1ebSSage Weil 1244355da1ebSSage Weil if (!rinfo->head->is_target && !rinfo->head->is_dentry) { 1245355da1ebSSage Weil dout("fill_trace reply is empty!\n"); 12463dd69aabSJeff Layton if (rinfo->head->result == 0 && req->r_parent) 1247167c9e35SSage Weil ceph_invalidate_dir_request(req); 1248355da1ebSSage Weil return 0; 1249355da1ebSSage Weil } 1250355da1ebSSage Weil 1251355da1ebSSage Weil if (rinfo->head->is_dentry) { 12523dd69aabSJeff Layton struct inode *dir = req->r_parent; 12535b1daecdSSage Weil 12546c5e50faSSage Weil if (dir) { 1255966c7160SJeff Layton err = ceph_fill_inode(dir, NULL, &rinfo->diri, 1256966c7160SJeff Layton rinfo->dirfrag, session, -1, 12575b1daecdSSage Weil &req->r_caps_reservation); 12585b1daecdSSage Weil if (err < 0) 125919913b4eSYan, Zheng goto done; 12606c5e50faSSage Weil } else { 12616c5e50faSSage Weil WARN_ON_ONCE(1); 12626c5e50faSSage Weil } 126319913b4eSYan, Zheng 126474c9e6bfSYan, Zheng if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME && 126574c9e6bfSYan, Zheng test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 126674c9e6bfSYan, Zheng !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { 126719913b4eSYan, Zheng struct qstr dname; 126819913b4eSYan, Zheng struct dentry *dn, *parent; 126919913b4eSYan, Zheng 127019913b4eSYan, Zheng BUG_ON(!rinfo->head->is_target); 127119913b4eSYan, Zheng BUG_ON(req->r_dentry); 127219913b4eSYan, Zheng 127319913b4eSYan, Zheng parent = d_find_any_alias(dir); 127419913b4eSYan, Zheng BUG_ON(!parent); 127519913b4eSYan, Zheng 127619913b4eSYan, Zheng dname.name = rinfo->dname; 127719913b4eSYan, Zheng dname.len = rinfo->dname_len; 12788387ff25SLinus Torvalds dname.hash = full_name_hash(parent, dname.name, dname.len); 1279f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1280f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 128119913b4eSYan, Zheng retry_lookup: 128219913b4eSYan, Zheng dn = d_lookup(parent, &dname); 128319913b4eSYan, Zheng dout("d_lookup on parent=%p name=%.*s got %p\n", 128419913b4eSYan, Zheng parent, dname.len, dname.name, dn); 128519913b4eSYan, Zheng 128619913b4eSYan, Zheng if (!dn) { 128719913b4eSYan, Zheng dn = d_alloc(parent, &dname); 128819913b4eSYan, Zheng dout("d_alloc %p '%.*s' = %p\n", parent, 128919913b4eSYan, Zheng dname.len, dname.name, dn); 1290d37b1d99SMarkus Elfring if (!dn) { 129119913b4eSYan, Zheng dput(parent); 129219913b4eSYan, Zheng err = -ENOMEM; 129319913b4eSYan, Zheng goto done; 129419913b4eSYan, Zheng } 1295ad5cb123SAl Viro err = 0; 12962b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 1297f5d55f03SJeff Layton (ceph_ino(d_inode(dn)) != tvino.ino || 1298f5d55f03SJeff Layton ceph_snap(d_inode(dn)) != tvino.snap)) { 129919913b4eSYan, Zheng dout(" dn %p points to wrong inode %p\n", 13002b0143b5SDavid Howells dn, d_inode(dn)); 1301933ad2c9SYan, Zheng ceph_dir_clear_ordered(dir); 130219913b4eSYan, Zheng d_delete(dn); 130319913b4eSYan, Zheng dput(dn); 130419913b4eSYan, Zheng goto retry_lookup; 130519913b4eSYan, Zheng } 130619913b4eSYan, Zheng 130719913b4eSYan, Zheng req->r_dentry = dn; 130819913b4eSYan, Zheng dput(parent); 130919913b4eSYan, Zheng } 13105b1daecdSSage Weil } 13115b1daecdSSage Weil 131286b58d13SYan, Zheng if (rinfo->head->is_target) { 1313f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1314f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 131586b58d13SYan, Zheng 1316f5d55f03SJeff Layton in = ceph_get_inode(sb, tvino); 131786b58d13SYan, Zheng if (IS_ERR(in)) { 131886b58d13SYan, Zheng err = PTR_ERR(in); 131986b58d13SYan, Zheng goto done; 132086b58d13SYan, Zheng } 132186b58d13SYan, Zheng 1322966c7160SJeff Layton err = ceph_fill_inode(in, req->r_locked_page, &rinfo->targeti, 1323966c7160SJeff Layton NULL, session, 1324bc2de10dSJeff Layton (!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && 13253bb48b41SJeff Layton !test_bit(CEPH_MDS_R_ASYNC, &req->r_req_flags) && 1326bc2de10dSJeff Layton rinfo->head->result == 0) ? req->r_fmode : -1, 132786b58d13SYan, Zheng &req->r_caps_reservation); 132886b58d13SYan, Zheng if (err < 0) { 1329966c7160SJeff Layton pr_err("ceph_fill_inode badness %p %llx.%llx\n", 133086b58d13SYan, Zheng in, ceph_vinop(in)); 1331893e456bSJeff Layton if (in->i_state & I_NEW) 1332893e456bSJeff Layton discard_new_inode(in); 133386b58d13SYan, Zheng goto done; 133486b58d13SYan, Zheng } 1335893e456bSJeff Layton req->r_target_inode = in; 1336893e456bSJeff Layton if (in->i_state & I_NEW) 1337893e456bSJeff Layton unlock_new_inode(in); 133886b58d13SYan, Zheng } 133986b58d13SYan, Zheng 13409358c6d4SSage Weil /* 13419358c6d4SSage Weil * ignore null lease/binding on snapdir ENOENT, or else we 13429358c6d4SSage Weil * will have trouble splicing in the virtual snapdir later 13439358c6d4SSage Weil */ 13443dd69aabSJeff Layton if (rinfo->head->is_dentry && 1345bc2de10dSJeff Layton !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && 13463dd69aabSJeff Layton test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 13479358c6d4SSage Weil (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, 13483d14c5d2SYehuda Sadeh fsc->mount_options->snapdir_name, 13499358c6d4SSage Weil req->r_dentry->d_name.len))) { 1350355da1ebSSage Weil /* 1351355da1ebSSage Weil * lookup link rename : null -> possibly existing inode 1352355da1ebSSage Weil * mknod symlink mkdir : null -> new inode 1353355da1ebSSage Weil * unlink : linked -> null 1354355da1ebSSage Weil */ 13553dd69aabSJeff Layton struct inode *dir = req->r_parent; 1356355da1ebSSage Weil struct dentry *dn = req->r_dentry; 1357355da1ebSSage Weil bool have_dir_cap, have_lease; 1358355da1ebSSage Weil 1359355da1ebSSage Weil BUG_ON(!dn); 1360355da1ebSSage Weil BUG_ON(!dir); 13612b0143b5SDavid Howells BUG_ON(d_inode(dn->d_parent) != dir); 1362f5d55f03SJeff Layton 1363f5d55f03SJeff Layton dvino.ino = le64_to_cpu(rinfo->diri.in->ino); 1364f5d55f03SJeff Layton dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); 1365f5d55f03SJeff Layton 1366f5d55f03SJeff Layton BUG_ON(ceph_ino(dir) != dvino.ino); 1367f5d55f03SJeff Layton BUG_ON(ceph_snap(dir) != dvino.snap); 1368355da1ebSSage Weil 1369355da1ebSSage Weil /* do we have a lease on the whole dir? */ 1370355da1ebSSage Weil have_dir_cap = 1371355da1ebSSage Weil (le32_to_cpu(rinfo->diri.in->cap.caps) & 1372355da1ebSSage Weil CEPH_CAP_FILE_SHARED); 1373355da1ebSSage Weil 1374355da1ebSSage Weil /* do we have a dn lease? */ 1375355da1ebSSage Weil have_lease = have_dir_cap || 13762f90b852SSage Weil le32_to_cpu(rinfo->dlease->duration_ms); 1377355da1ebSSage Weil if (!have_lease) 1378355da1ebSSage Weil dout("fill_trace no dentry lease or dir cap\n"); 1379355da1ebSSage Weil 1380355da1ebSSage Weil /* rename? */ 1381355da1ebSSage Weil if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { 13820a8a70f9SYan, Zheng struct inode *olddir = req->r_old_dentry_dir; 13830a8a70f9SYan, Zheng BUG_ON(!olddir); 13840a8a70f9SYan, Zheng 1385a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1386355da1ebSSage Weil req->r_old_dentry, 1387a455589fSAl Viro req->r_old_dentry, 1388a455589fSAl Viro dn, dn); 1389355da1ebSSage Weil dout("fill_trace doing d_move %p -> %p\n", 1390355da1ebSSage Weil req->r_old_dentry, dn); 1391c10f5e12SSage Weil 1392fdd4e158SYan, Zheng /* d_move screws up sibling dentries' offsets */ 1393fdd4e158SYan, Zheng ceph_dir_clear_ordered(dir); 1394fdd4e158SYan, Zheng ceph_dir_clear_ordered(olddir); 1395fdd4e158SYan, Zheng 1396355da1ebSSage Weil d_move(req->r_old_dentry, dn); 1397a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1398355da1ebSSage Weil req->r_old_dentry, 1399a455589fSAl Viro req->r_old_dentry, 1400a455589fSAl Viro dn, dn); 140181a6cf2dSSage Weil 1402c4a29f26SSage Weil /* ensure target dentry is invalidated, despite 1403c4a29f26SSage Weil rehashing bug in vfs_rename_dir */ 140481a6cf2dSSage Weil ceph_invalidate_dentry_lease(dn); 140581a6cf2dSSage Weil 140609adc80cSSage Weil dout("dn %p gets new offset %lld\n", req->r_old_dentry, 14071cd3935bSSage Weil ceph_dentry(req->r_old_dentry)->offset); 140881a6cf2dSSage Weil 14092bf996acSYan, Zheng /* swap r_dentry and r_old_dentry in case that 14102bf996acSYan, Zheng * splice_dentry() gets called later. This is safe 14112bf996acSYan, Zheng * because no other place will use them */ 14122bf996acSYan, Zheng req->r_dentry = req->r_old_dentry; 14132bf996acSYan, Zheng req->r_old_dentry = dn; 14142bf996acSYan, Zheng dn = req->r_dentry; 1415355da1ebSSage Weil } 1416355da1ebSSage Weil 1417355da1ebSSage Weil /* null dentry? */ 1418355da1ebSSage Weil if (!rinfo->head->is_target) { 1419355da1ebSSage Weil dout("fill_trace null dentry\n"); 14202b0143b5SDavid Howells if (d_really_is_positive(dn)) { 1421355da1ebSSage Weil dout("d_delete %p\n", dn); 14225495c2d0SYan, Zheng ceph_dir_clear_ordered(dir); 1423355da1ebSSage Weil d_delete(dn); 142480d025ffSJeff Layton } else if (have_lease) { 142580d025ffSJeff Layton if (d_unhashed(dn)) 1426f8b31710SAl Viro d_add(dn, NULL); 1427543212b3SYan, Zheng update_dentry_lease(dir, dn, 1428543212b3SYan, Zheng rinfo->dlease, session, 1429543212b3SYan, Zheng req->r_request_started); 1430355da1ebSSage Weil } 1431355da1ebSSage Weil goto done; 1432355da1ebSSage Weil } 1433355da1ebSSage Weil 1434355da1ebSSage Weil /* attach proper inode */ 14352b0143b5SDavid Howells if (d_really_is_negative(dn)) { 143670db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 143786b58d13SYan, Zheng ihold(in); 14382bf996acSYan, Zheng err = splice_dentry(&req->r_dentry, in); 14392bf996acSYan, Zheng if (err < 0) 1440355da1ebSSage Weil goto done; 14412bf996acSYan, Zheng dn = req->r_dentry; /* may have spliced */ 14422b0143b5SDavid Howells } else if (d_really_is_positive(dn) && d_inode(dn) != in) { 1443355da1ebSSage Weil dout(" %p links to %p %llx.%llx, not %llx.%llx\n", 14442b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn)), 144586b58d13SYan, Zheng ceph_vinop(in)); 1446200fd27cSYan, Zheng d_invalidate(dn); 1447355da1ebSSage Weil have_lease = false; 1448355da1ebSSage Weil } 1449355da1ebSSage Weil 1450f5d55f03SJeff Layton if (have_lease) { 1451543212b3SYan, Zheng update_dentry_lease(dir, dn, 1452543212b3SYan, Zheng rinfo->dlease, session, 1453543212b3SYan, Zheng req->r_request_started); 1454f5d55f03SJeff Layton } 1455355da1ebSSage Weil dout(" final dn %p\n", dn); 1456bc2de10dSJeff Layton } else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP || 1457bc2de10dSJeff Layton req->r_op == CEPH_MDS_OP_MKSNAP) && 14581f08529cSAl Viro test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && 1459bc2de10dSJeff Layton !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { 14603dd69aabSJeff Layton struct inode *dir = req->r_parent; 1461355da1ebSSage Weil 1462355da1ebSSage Weil /* fill out a snapdir LOOKUPSNAP dentry */ 14630a8a70f9SYan, Zheng BUG_ON(!dir); 14640a8a70f9SYan, Zheng BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); 14652bf996acSYan, Zheng BUG_ON(!req->r_dentry); 14662bf996acSYan, Zheng dout(" linking snapped dir %p to dn %p\n", in, req->r_dentry); 146770db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 146886b58d13SYan, Zheng ihold(in); 14692bf996acSYan, Zheng err = splice_dentry(&req->r_dentry, in); 14702bf996acSYan, Zheng if (err < 0) 1471355da1ebSSage Weil goto done; 1472543212b3SYan, Zheng } else if (rinfo->head->is_dentry && req->r_dentry) { 1473543212b3SYan, Zheng /* parent inode is not locked, be carefull */ 1474cdde7c43SJeff Layton struct ceph_vino *ptvino = NULL; 1475cdde7c43SJeff Layton dvino.ino = le64_to_cpu(rinfo->diri.in->ino); 1476cdde7c43SJeff Layton dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); 1477cdde7c43SJeff Layton if (rinfo->head->is_target) { 1478cdde7c43SJeff Layton tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); 1479cdde7c43SJeff Layton tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 1480cdde7c43SJeff Layton ptvino = &tvino; 1481cdde7c43SJeff Layton } 1482543212b3SYan, Zheng update_dentry_lease_careful(req->r_dentry, rinfo->dlease, 1483543212b3SYan, Zheng session, req->r_request_started, 1484543212b3SYan, Zheng rinfo->dname, rinfo->dname_len, 1485543212b3SYan, Zheng &dvino, ptvino); 1486355da1ebSSage Weil } 1487355da1ebSSage Weil done: 1488355da1ebSSage Weil dout("fill_trace done err=%d\n", err); 1489355da1ebSSage Weil return err; 1490355da1ebSSage Weil } 1491355da1ebSSage Weil 1492355da1ebSSage Weil /* 1493355da1ebSSage Weil * Prepopulate our cache with readdir results, leases, etc. 1494355da1ebSSage Weil */ 149579f9f99aSSage Weil static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, 149679f9f99aSSage Weil struct ceph_mds_session *session) 149779f9f99aSSage Weil { 149879f9f99aSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 149979f9f99aSSage Weil int i, err = 0; 150079f9f99aSSage Weil 150179f9f99aSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 15022a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 150379f9f99aSSage Weil struct ceph_vino vino; 150479f9f99aSSage Weil struct inode *in; 150579f9f99aSSage Weil int rc; 150679f9f99aSSage Weil 15072a5beea3SYan, Zheng vino.ino = le64_to_cpu(rde->inode.in->ino); 15082a5beea3SYan, Zheng vino.snap = le64_to_cpu(rde->inode.in->snapid); 150979f9f99aSSage Weil 151079f9f99aSSage Weil in = ceph_get_inode(req->r_dentry->d_sb, vino); 151179f9f99aSSage Weil if (IS_ERR(in)) { 151279f9f99aSSage Weil err = PTR_ERR(in); 151379f9f99aSSage Weil dout("new_inode badness got %d\n", err); 151479f9f99aSSage Weil continue; 151579f9f99aSSage Weil } 1516966c7160SJeff Layton rc = ceph_fill_inode(in, NULL, &rde->inode, NULL, session, 151757c21994SJeff Layton -1, &req->r_caps_reservation); 151879f9f99aSSage Weil if (rc < 0) { 1519966c7160SJeff Layton pr_err("ceph_fill_inode badness on %p got %d\n", 1520966c7160SJeff Layton in, rc); 152179f9f99aSSage Weil err = rc; 1522893e456bSJeff Layton if (in->i_state & I_NEW) { 1523893e456bSJeff Layton ihold(in); 1524893e456bSJeff Layton discard_new_inode(in); 152579f9f99aSSage Weil } 1526893e456bSJeff Layton } else if (in->i_state & I_NEW) { 1527893e456bSJeff Layton unlock_new_inode(in); 1528893e456bSJeff Layton } 1529893e456bSJeff Layton 15303e1d0452SYan, Zheng /* avoid calling iput_final() in mds dispatch threads */ 15313e1d0452SYan, Zheng ceph_async_iput(in); 153279f9f99aSSage Weil } 153379f9f99aSSage Weil 153479f9f99aSSage Weil return err; 153579f9f99aSSage Weil } 153679f9f99aSSage Weil 1537fdd4e158SYan, Zheng void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) 1538fdd4e158SYan, Zheng { 1539fdd4e158SYan, Zheng if (ctl->page) { 1540fdd4e158SYan, Zheng kunmap(ctl->page); 154109cbfeafSKirill A. Shutemov put_page(ctl->page); 1542fdd4e158SYan, Zheng ctl->page = NULL; 1543fdd4e158SYan, Zheng } 1544fdd4e158SYan, Zheng } 1545fdd4e158SYan, Zheng 1546fdd4e158SYan, Zheng static int fill_readdir_cache(struct inode *dir, struct dentry *dn, 1547fdd4e158SYan, Zheng struct ceph_readdir_cache_control *ctl, 1548fdd4e158SYan, Zheng struct ceph_mds_request *req) 1549fdd4e158SYan, Zheng { 1550fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(dir); 155109cbfeafSKirill A. Shutemov unsigned nsize = PAGE_SIZE / sizeof(struct dentry*); 1552fdd4e158SYan, Zheng unsigned idx = ctl->index % nsize; 1553fdd4e158SYan, Zheng pgoff_t pgoff = ctl->index / nsize; 1554fdd4e158SYan, Zheng 1555fdd4e158SYan, Zheng if (!ctl->page || pgoff != page_index(ctl->page)) { 1556fdd4e158SYan, Zheng ceph_readdir_cache_release(ctl); 1557af5e5eb5SYan, Zheng if (idx == 0) 1558fdd4e158SYan, Zheng ctl->page = grab_cache_page(&dir->i_data, pgoff); 1559af5e5eb5SYan, Zheng else 1560af5e5eb5SYan, Zheng ctl->page = find_lock_page(&dir->i_data, pgoff); 1561fdd4e158SYan, Zheng if (!ctl->page) { 1562fdd4e158SYan, Zheng ctl->index = -1; 1563af5e5eb5SYan, Zheng return idx == 0 ? -ENOMEM : 0; 1564fdd4e158SYan, Zheng } 1565fdd4e158SYan, Zheng /* reading/filling the cache are serialized by 1566fdd4e158SYan, Zheng * i_mutex, no need to use page lock */ 1567fdd4e158SYan, Zheng unlock_page(ctl->page); 1568fdd4e158SYan, Zheng ctl->dentries = kmap(ctl->page); 1569af5e5eb5SYan, Zheng if (idx == 0) 157009cbfeafSKirill A. Shutemov memset(ctl->dentries, 0, PAGE_SIZE); 1571fdd4e158SYan, Zheng } 1572fdd4e158SYan, Zheng 1573fdd4e158SYan, Zheng if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && 1574fdd4e158SYan, Zheng req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { 1575fdd4e158SYan, Zheng dout("readdir cache dn %p idx %d\n", dn, ctl->index); 1576fdd4e158SYan, Zheng ctl->dentries[idx] = dn; 1577fdd4e158SYan, Zheng ctl->index++; 1578fdd4e158SYan, Zheng } else { 1579fdd4e158SYan, Zheng dout("disable readdir cache\n"); 1580fdd4e158SYan, Zheng ctl->index = -1; 1581fdd4e158SYan, Zheng } 1582fdd4e158SYan, Zheng return 0; 1583fdd4e158SYan, Zheng } 1584fdd4e158SYan, Zheng 1585355da1ebSSage Weil int ceph_readdir_prepopulate(struct ceph_mds_request *req, 1586355da1ebSSage Weil struct ceph_mds_session *session) 1587355da1ebSSage Weil { 1588355da1ebSSage Weil struct dentry *parent = req->r_dentry; 1589f3c4ebe6SYan, Zheng struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); 1590355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1591355da1ebSSage Weil struct qstr dname; 1592355da1ebSSage Weil struct dentry *dn; 1593355da1ebSSage Weil struct inode *in; 1594315f2408SYan, Zheng int err = 0, skipped = 0, ret, i; 1595355da1ebSSage Weil struct ceph_mds_request_head *rhead = req->r_request->front.iov_base; 159681c6aea5SYan, Zheng u32 frag = le32_to_cpu(rhead->args.readdir.frag); 1597f3c4ebe6SYan, Zheng u32 last_hash = 0; 1598f3c4ebe6SYan, Zheng u32 fpos_offset; 1599fdd4e158SYan, Zheng struct ceph_readdir_cache_control cache_ctl = {}; 1600fdd4e158SYan, Zheng 1601bc2de10dSJeff Layton if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) 1602fdd4e158SYan, Zheng return readdir_prepopulate_inodes_only(req, session); 160381c6aea5SYan, Zheng 160479162547SYan, Zheng if (rinfo->hash_order) { 160579162547SYan, Zheng if (req->r_path2) { 1606f3c4ebe6SYan, Zheng last_hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 160779162547SYan, Zheng req->r_path2, 160879162547SYan, Zheng strlen(req->r_path2)); 1609f3c4ebe6SYan, Zheng last_hash = ceph_frag_value(last_hash); 161079162547SYan, Zheng } else if (rinfo->offset_hash) { 161179162547SYan, Zheng /* mds understands offset_hash */ 161279162547SYan, Zheng WARN_ON_ONCE(req->r_readdir_offset != 2); 161379162547SYan, Zheng last_hash = le32_to_cpu(rhead->args.readdir.offset_hash); 161479162547SYan, Zheng } 1615f3c4ebe6SYan, Zheng } 1616f3c4ebe6SYan, Zheng 161781c6aea5SYan, Zheng if (rinfo->dir_dir && 161881c6aea5SYan, Zheng le32_to_cpu(rinfo->dir_dir->frag) != frag) { 161981c6aea5SYan, Zheng dout("readdir_prepopulate got new frag %x -> %x\n", 162081c6aea5SYan, Zheng frag, le32_to_cpu(rinfo->dir_dir->frag)); 162181c6aea5SYan, Zheng frag = le32_to_cpu(rinfo->dir_dir->frag); 1622f3c4ebe6SYan, Zheng if (!rinfo->hash_order) 1623fdd4e158SYan, Zheng req->r_readdir_offset = 2; 162481c6aea5SYan, Zheng } 1625355da1ebSSage Weil 1626355da1ebSSage Weil if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { 1627355da1ebSSage Weil dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", 1628355da1ebSSage Weil rinfo->dir_nr, parent); 1629355da1ebSSage Weil } else { 1630355da1ebSSage Weil dout("readdir_prepopulate %d items under dn %p\n", 1631355da1ebSSage Weil rinfo->dir_nr, parent); 1632355da1ebSSage Weil if (rinfo->dir_dir) 16332b0143b5SDavid Howells ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); 1634355da1ebSSage Weil 16358d45b911SYan, Zheng if (ceph_frag_is_leftmost(frag) && 16368d45b911SYan, Zheng req->r_readdir_offset == 2 && 163779162547SYan, Zheng !(rinfo->hash_order && last_hash)) { 16388d45b911SYan, Zheng /* note dir version at start of readdir so we can 16398d45b911SYan, Zheng * tell if any dentries get dropped */ 16408d45b911SYan, Zheng req->r_dir_release_cnt = 16418d45b911SYan, Zheng atomic64_read(&ci->i_release_count); 16428d45b911SYan, Zheng req->r_dir_ordered_cnt = 16438d45b911SYan, Zheng atomic64_read(&ci->i_ordered_count); 1644fdd4e158SYan, Zheng req->r_readdir_cache_idx = 0; 1645fdd4e158SYan, Zheng } 16468d45b911SYan, Zheng } 1647fdd4e158SYan, Zheng 1648fdd4e158SYan, Zheng cache_ctl.index = req->r_readdir_cache_idx; 1649f3c4ebe6SYan, Zheng fpos_offset = req->r_readdir_offset; 1650fdd4e158SYan, Zheng 165186b58d13SYan, Zheng /* FIXME: release caps/leases if error occurs */ 1652355da1ebSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 16532a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 1654543212b3SYan, Zheng struct ceph_vino tvino; 1655355da1ebSSage Weil 16562a5beea3SYan, Zheng dname.name = rde->name; 16572a5beea3SYan, Zheng dname.len = rde->name_len; 16588387ff25SLinus Torvalds dname.hash = full_name_hash(parent, dname.name, dname.len); 1659355da1ebSSage Weil 1660f5d55f03SJeff Layton tvino.ino = le64_to_cpu(rde->inode.in->ino); 1661f5d55f03SJeff Layton tvino.snap = le64_to_cpu(rde->inode.in->snapid); 1662355da1ebSSage Weil 1663f3c4ebe6SYan, Zheng if (rinfo->hash_order) { 1664f3c4ebe6SYan, Zheng u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 1665f3c4ebe6SYan, Zheng rde->name, rde->name_len); 1666f3c4ebe6SYan, Zheng hash = ceph_frag_value(hash); 1667f3c4ebe6SYan, Zheng if (hash != last_hash) 1668f3c4ebe6SYan, Zheng fpos_offset = 2; 1669f3c4ebe6SYan, Zheng last_hash = hash; 1670f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(hash, fpos_offset++, true); 1671f3c4ebe6SYan, Zheng } else { 1672f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(frag, fpos_offset++, false); 1673f3c4ebe6SYan, Zheng } 1674355da1ebSSage Weil 1675355da1ebSSage Weil retry_lookup: 1676355da1ebSSage Weil dn = d_lookup(parent, &dname); 1677355da1ebSSage Weil dout("d_lookup on parent=%p name=%.*s got %p\n", 1678355da1ebSSage Weil parent, dname.len, dname.name, dn); 1679355da1ebSSage Weil 1680355da1ebSSage Weil if (!dn) { 1681355da1ebSSage Weil dn = d_alloc(parent, &dname); 1682355da1ebSSage Weil dout("d_alloc %p '%.*s' = %p\n", parent, 1683355da1ebSSage Weil dname.len, dname.name, dn); 1684d37b1d99SMarkus Elfring if (!dn) { 1685355da1ebSSage Weil dout("d_alloc badness\n"); 1686355da1ebSSage Weil err = -ENOMEM; 1687355da1ebSSage Weil goto out; 1688355da1ebSSage Weil } 16892b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 1690f5d55f03SJeff Layton (ceph_ino(d_inode(dn)) != tvino.ino || 1691f5d55f03SJeff Layton ceph_snap(d_inode(dn)) != tvino.snap)) { 16925495c2d0SYan, Zheng struct ceph_dentry_info *di = ceph_dentry(dn); 1693355da1ebSSage Weil dout(" dn %p points to wrong inode %p\n", 16942b0143b5SDavid Howells dn, d_inode(dn)); 16955495c2d0SYan, Zheng 16965495c2d0SYan, Zheng spin_lock(&dn->d_lock); 16975495c2d0SYan, Zheng if (di->offset > 0 && 16985495c2d0SYan, Zheng di->lease_shared_gen == 16995495c2d0SYan, Zheng atomic_read(&ci->i_shared_gen)) { 1700933ad2c9SYan, Zheng __ceph_dir_clear_ordered(ci); 17015495c2d0SYan, Zheng di->offset = 0; 17025495c2d0SYan, Zheng } 17035495c2d0SYan, Zheng spin_unlock(&dn->d_lock); 17045495c2d0SYan, Zheng 1705355da1ebSSage Weil d_delete(dn); 1706355da1ebSSage Weil dput(dn); 1707355da1ebSSage Weil goto retry_lookup; 1708355da1ebSSage Weil } 1709355da1ebSSage Weil 1710355da1ebSSage Weil /* inode */ 17112b0143b5SDavid Howells if (d_really_is_positive(dn)) { 17122b0143b5SDavid Howells in = d_inode(dn); 1713355da1ebSSage Weil } else { 1714f5d55f03SJeff Layton in = ceph_get_inode(parent->d_sb, tvino); 1715ac1f12efSDan Carpenter if (IS_ERR(in)) { 1716355da1ebSSage Weil dout("new_inode badness\n"); 17172744c171SAl Viro d_drop(dn); 1718355da1ebSSage Weil dput(dn); 1719ac1f12efSDan Carpenter err = PTR_ERR(in); 1720355da1ebSSage Weil goto out; 1721355da1ebSSage Weil } 1722355da1ebSSage Weil } 1723355da1ebSSage Weil 1724966c7160SJeff Layton ret = ceph_fill_inode(in, NULL, &rde->inode, NULL, session, 172557c21994SJeff Layton -1, &req->r_caps_reservation); 1726fdd4e158SYan, Zheng if (ret < 0) { 1727966c7160SJeff Layton pr_err("ceph_fill_inode badness on %p\n", in); 17283e1d0452SYan, Zheng if (d_really_is_negative(dn)) { 17293e1d0452SYan, Zheng /* avoid calling iput_final() in mds 17303e1d0452SYan, Zheng * dispatch threads */ 1731893e456bSJeff Layton if (in->i_state & I_NEW) { 1732893e456bSJeff Layton ihold(in); 1733893e456bSJeff Layton discard_new_inode(in); 1734893e456bSJeff Layton } 17353e1d0452SYan, Zheng ceph_async_iput(in); 17363e1d0452SYan, Zheng } 173786b58d13SYan, Zheng d_drop(dn); 1738fdd4e158SYan, Zheng err = ret; 1739d69ed05aSSage Weil goto next_item; 1740355da1ebSSage Weil } 1741893e456bSJeff Layton if (in->i_state & I_NEW) 1742893e456bSJeff Layton unlock_new_inode(in); 174386b58d13SYan, Zheng 17442b0143b5SDavid Howells if (d_really_is_negative(dn)) { 1745315f2408SYan, Zheng if (ceph_security_xattr_deadlock(in)) { 1746315f2408SYan, Zheng dout(" skip splicing dn %p to inode %p" 1747315f2408SYan, Zheng " (security xattr deadlock)\n", dn, in); 17483e1d0452SYan, Zheng ceph_async_iput(in); 1749315f2408SYan, Zheng skipped++; 1750315f2408SYan, Zheng goto next_item; 1751315f2408SYan, Zheng } 1752315f2408SYan, Zheng 17532bf996acSYan, Zheng err = splice_dentry(&dn, in); 17542bf996acSYan, Zheng if (err < 0) 175586b58d13SYan, Zheng goto next_item; 175686b58d13SYan, Zheng } 175786b58d13SYan, Zheng 1758f3c4ebe6SYan, Zheng ceph_dentry(dn)->offset = rde->offset; 175986b58d13SYan, Zheng 1760543212b3SYan, Zheng update_dentry_lease(d_inode(parent), dn, 1761543212b3SYan, Zheng rde->lease, req->r_session, 1762543212b3SYan, Zheng req->r_request_started); 1763fdd4e158SYan, Zheng 1764315f2408SYan, Zheng if (err == 0 && skipped == 0 && cache_ctl.index >= 0) { 1765fdd4e158SYan, Zheng ret = fill_readdir_cache(d_inode(parent), dn, 1766fdd4e158SYan, Zheng &cache_ctl, req); 1767fdd4e158SYan, Zheng if (ret < 0) 1768fdd4e158SYan, Zheng err = ret; 1769fdd4e158SYan, Zheng } 1770d69ed05aSSage Weil next_item: 1771355da1ebSSage Weil dput(dn); 1772355da1ebSSage Weil } 1773355da1ebSSage Weil out: 1774315f2408SYan, Zheng if (err == 0 && skipped == 0) { 1775bc2de10dSJeff Layton set_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags); 1776fdd4e158SYan, Zheng req->r_readdir_cache_idx = cache_ctl.index; 1777fdd4e158SYan, Zheng } 1778fdd4e158SYan, Zheng ceph_readdir_cache_release(&cache_ctl); 1779355da1ebSSage Weil dout("readdir_prepopulate done\n"); 1780355da1ebSSage Weil return err; 1781355da1ebSSage Weil } 1782355da1ebSSage Weil 1783efb0ca76SYan, Zheng bool ceph_inode_set_size(struct inode *inode, loff_t size) 1784355da1ebSSage Weil { 1785355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1786efb0ca76SYan, Zheng bool ret; 1787355da1ebSSage Weil 1788be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1789355da1ebSSage Weil dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); 179099c88e69SYan, Zheng i_size_write(inode, size); 1791224a7542SYan, Zheng inode->i_blocks = calc_inode_blocks(size); 1792355da1ebSSage Weil 1793efb0ca76SYan, Zheng ret = __ceph_should_report_size(ci); 1794355da1ebSSage Weil 1795be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1796355da1ebSSage Weil return ret; 1797355da1ebSSage Weil } 1798355da1ebSSage Weil 1799355da1ebSSage Weil /* 18003e1d0452SYan, Zheng * Put reference to inode, but avoid calling iput_final() in current thread. 18013e1d0452SYan, Zheng * iput_final() may wait for reahahead pages. The wait can cause deadlock in 18023e1d0452SYan, Zheng * some contexts. 18033e1d0452SYan, Zheng */ 18043e1d0452SYan, Zheng void ceph_async_iput(struct inode *inode) 18053e1d0452SYan, Zheng { 18063e1d0452SYan, Zheng if (!inode) 18073e1d0452SYan, Zheng return; 18083e1d0452SYan, Zheng for (;;) { 18093e1d0452SYan, Zheng if (atomic_add_unless(&inode->i_count, -1, 1)) 18103e1d0452SYan, Zheng break; 18113e1d0452SYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 18123e1d0452SYan, Zheng &ceph_inode(inode)->i_work)) 18133e1d0452SYan, Zheng break; 18143e1d0452SYan, Zheng /* queue work failed, i_count must be at least 2 */ 18153e1d0452SYan, Zheng } 18163e1d0452SYan, Zheng } 18173e1d0452SYan, Zheng 18183e1d0452SYan, Zheng /* 1819355da1ebSSage Weil * Write back inode data in a worker thread. (This can't be done 1820355da1ebSSage Weil * in the message handler context.) 1821355da1ebSSage Weil */ 18223c6f6b79SSage Weil void ceph_queue_writeback(struct inode *inode) 18233c6f6b79SSage Weil { 18241cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 18251cf89a8dSYan, Zheng set_bit(CEPH_I_WORK_WRITEBACK, &ci->i_work_mask); 18261cf89a8dSYan, Zheng 182715a2015fSSage Weil ihold(inode); 18281cf89a8dSYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 18291cf89a8dSYan, Zheng &ci->i_work)) { 18302c27c9a5SSage Weil dout("ceph_queue_writeback %p\n", inode); 18313c6f6b79SSage Weil } else { 18321cf89a8dSYan, Zheng dout("ceph_queue_writeback %p already queued, mask=%lx\n", 18331cf89a8dSYan, Zheng inode, ci->i_work_mask); 183415a2015fSSage Weil iput(inode); 18353c6f6b79SSage Weil } 18363c6f6b79SSage Weil } 18373c6f6b79SSage Weil 1838355da1ebSSage Weil /* 18393c6f6b79SSage Weil * queue an async invalidation 18403c6f6b79SSage Weil */ 18413c6f6b79SSage Weil void ceph_queue_invalidate(struct inode *inode) 18423c6f6b79SSage Weil { 18431cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 18441cf89a8dSYan, Zheng set_bit(CEPH_I_WORK_INVALIDATE_PAGES, &ci->i_work_mask); 18451cf89a8dSYan, Zheng 184615a2015fSSage Weil ihold(inode); 18471cf89a8dSYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 18481cf89a8dSYan, Zheng &ceph_inode(inode)->i_work)) { 18493c6f6b79SSage Weil dout("ceph_queue_invalidate %p\n", inode); 18503c6f6b79SSage Weil } else { 18511cf89a8dSYan, Zheng dout("ceph_queue_invalidate %p already queued, mask=%lx\n", 18521cf89a8dSYan, Zheng inode, ci->i_work_mask); 185315a2015fSSage Weil iput(inode); 18543c6f6b79SSage Weil } 18553c6f6b79SSage Weil } 18563c6f6b79SSage Weil 18573c6f6b79SSage Weil /* 18581cf89a8dSYan, Zheng * Queue an async vmtruncate. If we fail to queue work, we will handle 18591cf89a8dSYan, Zheng * the truncation the next time we call __ceph_do_pending_vmtruncate. 1860355da1ebSSage Weil */ 18611cf89a8dSYan, Zheng void ceph_queue_vmtruncate(struct inode *inode) 1862355da1ebSSage Weil { 18631cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 18641cf89a8dSYan, Zheng set_bit(CEPH_I_WORK_VMTRUNCATE, &ci->i_work_mask); 18651cf89a8dSYan, Zheng 18661cf89a8dSYan, Zheng ihold(inode); 18671cf89a8dSYan, Zheng if (queue_work(ceph_inode_to_client(inode)->inode_wq, 18681cf89a8dSYan, Zheng &ci->i_work)) { 18691cf89a8dSYan, Zheng dout("ceph_queue_vmtruncate %p\n", inode); 18701cf89a8dSYan, Zheng } else { 18711cf89a8dSYan, Zheng dout("ceph_queue_vmtruncate %p already queued, mask=%lx\n", 18721cf89a8dSYan, Zheng inode, ci->i_work_mask); 18731cf89a8dSYan, Zheng iput(inode); 18741cf89a8dSYan, Zheng } 18751cf89a8dSYan, Zheng } 18761cf89a8dSYan, Zheng 18771cf89a8dSYan, Zheng static void ceph_do_invalidate_pages(struct inode *inode) 18781cf89a8dSYan, Zheng { 18791cf89a8dSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 18806c93df5dSYan, Zheng struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 1881355da1ebSSage Weil u32 orig_gen; 1882355da1ebSSage Weil int check = 0; 1883355da1ebSSage Weil 1884b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 18856c93df5dSYan, Zheng 188652953d55SSeraphime Kirkovski if (READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) { 18876c93df5dSYan, Zheng pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n", 18886c93df5dSYan, Zheng inode, ceph_ino(inode)); 18896c93df5dSYan, Zheng mapping_set_error(inode->i_mapping, -EIO); 18906c93df5dSYan, Zheng truncate_pagecache(inode, 0); 18916c93df5dSYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 18926c93df5dSYan, Zheng goto out; 18936c93df5dSYan, Zheng } 18946c93df5dSYan, Zheng 1895be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1896355da1ebSSage Weil dout("invalidate_pages %p gen %d revoking %d\n", inode, 1897355da1ebSSage Weil ci->i_rdcache_gen, ci->i_rdcache_revoking); 1898cd045cb4SSage Weil if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { 18999563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 19009563f88cSYan, Zheng check = 1; 1901be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1902b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1903355da1ebSSage Weil goto out; 1904355da1ebSSage Weil } 1905355da1ebSSage Weil orig_gen = ci->i_rdcache_gen; 1906be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1907355da1ebSSage Weil 19089abd4db7SYan, Zheng if (invalidate_inode_pages2(inode->i_mapping) < 0) { 19099abd4db7SYan, Zheng pr_err("invalidate_pages %p fails\n", inode); 19109abd4db7SYan, Zheng } 1911355da1ebSSage Weil 1912be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1913cd045cb4SSage Weil if (orig_gen == ci->i_rdcache_gen && 1914cd045cb4SSage Weil orig_gen == ci->i_rdcache_revoking) { 1915355da1ebSSage Weil dout("invalidate_pages %p gen %d successful\n", inode, 1916355da1ebSSage Weil ci->i_rdcache_gen); 1917cd045cb4SSage Weil ci->i_rdcache_revoking--; 1918355da1ebSSage Weil check = 1; 1919355da1ebSSage Weil } else { 1920cd045cb4SSage Weil dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", 1921cd045cb4SSage Weil inode, orig_gen, ci->i_rdcache_gen, 1922cd045cb4SSage Weil ci->i_rdcache_revoking); 19239563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 19249563f88cSYan, Zheng check = 1; 1925355da1ebSSage Weil } 1926be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1927b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 19289563f88cSYan, Zheng out: 1929355da1ebSSage Weil if (check) 1930355da1ebSSage Weil ceph_check_caps(ci, 0, NULL); 19313c6f6b79SSage Weil } 19323c6f6b79SSage Weil 19333c6f6b79SSage Weil /* 1934355da1ebSSage Weil * Make sure any pending truncation is applied before doing anything 1935355da1ebSSage Weil * that may depend on it. 1936355da1ebSSage Weil */ 1937b415bf4fSYan, Zheng void __ceph_do_pending_vmtruncate(struct inode *inode) 1938355da1ebSSage Weil { 1939355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1940355da1ebSSage Weil u64 to; 1941a85f50b6SYan, Zheng int wrbuffer_refs, finish = 0; 1942355da1ebSSage Weil 1943b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1944355da1ebSSage Weil retry: 1945be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1946355da1ebSSage Weil if (ci->i_truncate_pending == 0) { 1947355da1ebSSage Weil dout("__do_pending_vmtruncate %p none pending\n", inode); 1948be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1949b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1950355da1ebSSage Weil return; 1951355da1ebSSage Weil } 1952355da1ebSSage Weil 1953355da1ebSSage Weil /* 1954355da1ebSSage Weil * make sure any dirty snapped pages are flushed before we 1955355da1ebSSage Weil * possibly truncate them.. so write AND block! 1956355da1ebSSage Weil */ 1957355da1ebSSage Weil if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { 1958c8fd0d37SYan, Zheng spin_unlock(&ci->i_ceph_lock); 1959355da1ebSSage Weil dout("__do_pending_vmtruncate %p flushing snaps first\n", 1960355da1ebSSage Weil inode); 1961355da1ebSSage Weil filemap_write_and_wait_range(&inode->i_data, 0, 1962355da1ebSSage Weil inode->i_sb->s_maxbytes); 1963355da1ebSSage Weil goto retry; 1964355da1ebSSage Weil } 1965355da1ebSSage Weil 1966b0d7c223SYan, Zheng /* there should be no reader or writer */ 1967b0d7c223SYan, Zheng WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); 1968b0d7c223SYan, Zheng 1969355da1ebSSage Weil to = ci->i_truncate_size; 1970355da1ebSSage Weil wrbuffer_refs = ci->i_wrbuffer_ref; 1971355da1ebSSage Weil dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, 1972355da1ebSSage Weil ci->i_truncate_pending, to); 1973be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1974355da1ebSSage Weil 19754e217b5dSYan, Zheng truncate_pagecache(inode, to); 1976355da1ebSSage Weil 1977be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1978a85f50b6SYan, Zheng if (to == ci->i_truncate_size) { 1979a85f50b6SYan, Zheng ci->i_truncate_pending = 0; 1980a85f50b6SYan, Zheng finish = 1; 1981a85f50b6SYan, Zheng } 1982be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1983a85f50b6SYan, Zheng if (!finish) 1984a85f50b6SYan, Zheng goto retry; 1985355da1ebSSage Weil 1986b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1987b0d7c223SYan, Zheng 1988355da1ebSSage Weil if (wrbuffer_refs == 0) 1989bf73c62eSYan, Zheng ceph_check_caps(ci, 0, NULL); 1990a85f50b6SYan, Zheng 199103066f23SYehuda Sadeh wake_up_all(&ci->i_cap_wq); 1992355da1ebSSage Weil } 1993355da1ebSSage Weil 19941cf89a8dSYan, Zheng static void ceph_inode_work(struct work_struct *work) 19951cf89a8dSYan, Zheng { 19961cf89a8dSYan, Zheng struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 19971cf89a8dSYan, Zheng i_work); 19981cf89a8dSYan, Zheng struct inode *inode = &ci->vfs_inode; 19991cf89a8dSYan, Zheng 20001cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_WRITEBACK, &ci->i_work_mask)) { 20011cf89a8dSYan, Zheng dout("writeback %p\n", inode); 20021cf89a8dSYan, Zheng filemap_fdatawrite(&inode->i_data); 20031cf89a8dSYan, Zheng } 20041cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_INVALIDATE_PAGES, &ci->i_work_mask)) 20051cf89a8dSYan, Zheng ceph_do_invalidate_pages(inode); 20061cf89a8dSYan, Zheng 20071cf89a8dSYan, Zheng if (test_and_clear_bit(CEPH_I_WORK_VMTRUNCATE, &ci->i_work_mask)) 20081cf89a8dSYan, Zheng __ceph_do_pending_vmtruncate(inode); 20091cf89a8dSYan, Zheng 20101cf89a8dSYan, Zheng iput(inode); 20111cf89a8dSYan, Zheng } 20121cf89a8dSYan, Zheng 2013355da1ebSSage Weil /* 2014355da1ebSSage Weil * symlinks 2015355da1ebSSage Weil */ 2016355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops = { 20176b255391SAl Viro .get_link = simple_get_link, 20180b932672SYan, Zheng .setattr = ceph_setattr, 20190b932672SYan, Zheng .getattr = ceph_getattr, 20200b932672SYan, Zheng .listxattr = ceph_listxattr, 2021355da1ebSSage Weil }; 2022355da1ebSSage Weil 2023a26feccaSAndreas Gruenbacher int __ceph_setattr(struct inode *inode, struct iattr *attr) 2024355da1ebSSage Weil { 2025355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 2026c62498d7SJeff Layton unsigned int ia_valid = attr->ia_valid; 2027355da1ebSSage Weil struct ceph_mds_request *req; 2028a26feccaSAndreas Gruenbacher struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; 2029f66fd9f0SYan, Zheng struct ceph_cap_flush *prealloc_cf; 2030355da1ebSSage Weil int issued; 2031355da1ebSSage Weil int release = 0, dirtied = 0; 2032355da1ebSSage Weil int mask = 0; 2033355da1ebSSage Weil int err = 0; 2034fca65b4aSSage Weil int inode_dirty_flags = 0; 2035604d1b02SYan, Zheng bool lock_snap_rwsem = false; 2036355da1ebSSage Weil 2037f66fd9f0SYan, Zheng prealloc_cf = ceph_alloc_cap_flush(); 2038f66fd9f0SYan, Zheng if (!prealloc_cf) 2039f66fd9f0SYan, Zheng return -ENOMEM; 2040f66fd9f0SYan, Zheng 2041355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, 2042355da1ebSSage Weil USE_AUTH_MDS); 2043f66fd9f0SYan, Zheng if (IS_ERR(req)) { 2044f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 2045355da1ebSSage Weil return PTR_ERR(req); 2046f66fd9f0SYan, Zheng } 2047355da1ebSSage Weil 2048be655596SSage Weil spin_lock(&ci->i_ceph_lock); 2049355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 2050604d1b02SYan, Zheng 2051604d1b02SYan, Zheng if (!ci->i_head_snapc && 2052604d1b02SYan, Zheng (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { 2053604d1b02SYan, Zheng lock_snap_rwsem = true; 2054604d1b02SYan, Zheng if (!down_read_trylock(&mdsc->snap_rwsem)) { 2055604d1b02SYan, Zheng spin_unlock(&ci->i_ceph_lock); 2056604d1b02SYan, Zheng down_read(&mdsc->snap_rwsem); 2057604d1b02SYan, Zheng spin_lock(&ci->i_ceph_lock); 2058604d1b02SYan, Zheng issued = __ceph_caps_issued(ci, NULL); 2059604d1b02SYan, Zheng } 2060604d1b02SYan, Zheng } 2061604d1b02SYan, Zheng 2062355da1ebSSage Weil dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); 2063355da1ebSSage Weil 2064355da1ebSSage Weil if (ia_valid & ATTR_UID) { 2065355da1ebSSage Weil dout("setattr %p uid %d -> %d\n", inode, 2066bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 2067bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 2068355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2069355da1ebSSage Weil inode->i_uid = attr->ia_uid; 2070355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2071355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2072ab871b90SEric W. Biederman !uid_eq(attr->ia_uid, inode->i_uid)) { 2073ab871b90SEric W. Biederman req->r_args.setattr.uid = cpu_to_le32( 2074ab871b90SEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 2075355da1ebSSage Weil mask |= CEPH_SETATTR_UID; 2076355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2077355da1ebSSage Weil } 2078355da1ebSSage Weil } 2079355da1ebSSage Weil if (ia_valid & ATTR_GID) { 2080355da1ebSSage Weil dout("setattr %p gid %d -> %d\n", inode, 2081bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid), 2082bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 2083355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2084355da1ebSSage Weil inode->i_gid = attr->ia_gid; 2085355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2086355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2087ab871b90SEric W. Biederman !gid_eq(attr->ia_gid, inode->i_gid)) { 2088ab871b90SEric W. Biederman req->r_args.setattr.gid = cpu_to_le32( 2089ab871b90SEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 2090355da1ebSSage Weil mask |= CEPH_SETATTR_GID; 2091355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2092355da1ebSSage Weil } 2093355da1ebSSage Weil } 2094355da1ebSSage Weil if (ia_valid & ATTR_MODE) { 2095355da1ebSSage Weil dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, 2096355da1ebSSage Weil attr->ia_mode); 2097355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 2098355da1ebSSage Weil inode->i_mode = attr->ia_mode; 2099355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2100355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 2101355da1ebSSage Weil attr->ia_mode != inode->i_mode) { 21027221fe4cSGuangliang Zhao inode->i_mode = attr->ia_mode; 2103355da1ebSSage Weil req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); 2104355da1ebSSage Weil mask |= CEPH_SETATTR_MODE; 2105355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 2106355da1ebSSage Weil } 2107355da1ebSSage Weil } 2108355da1ebSSage Weil 2109355da1ebSSage Weil if (ia_valid & ATTR_ATIME) { 211013442b03SDeepa Dinamani dout("setattr %p atime %lld.%ld -> %lld.%ld\n", inode, 21119bbeab41SArnd Bergmann inode->i_atime.tv_sec, inode->i_atime.tv_nsec, 21129bbeab41SArnd Bergmann attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); 2113355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2114355da1ebSSage Weil ci->i_time_warp_seq++; 2115355da1ebSSage Weil inode->i_atime = attr->ia_atime; 2116355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2117355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 211895582b00SDeepa Dinamani timespec64_compare(&inode->i_atime, 2119355da1ebSSage Weil &attr->ia_atime) < 0) { 2120355da1ebSSage Weil inode->i_atime = attr->ia_atime; 2121355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2122355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 212395582b00SDeepa Dinamani !timespec64_equal(&inode->i_atime, &attr->ia_atime)) { 21249bbeab41SArnd Bergmann ceph_encode_timespec64(&req->r_args.setattr.atime, 21259bbeab41SArnd Bergmann &attr->ia_atime); 2126355da1ebSSage Weil mask |= CEPH_SETATTR_ATIME; 2127be70489eSYan, Zheng release |= CEPH_CAP_FILE_SHARED | 2128be70489eSYan, Zheng CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2129355da1ebSSage Weil } 2130355da1ebSSage Weil } 2131c62498d7SJeff Layton if (ia_valid & ATTR_SIZE) { 2132c62498d7SJeff Layton dout("setattr %p size %lld -> %lld\n", inode, 2133c62498d7SJeff Layton inode->i_size, attr->ia_size); 2134c62498d7SJeff Layton if ((issued & CEPH_CAP_FILE_EXCL) && 2135c62498d7SJeff Layton attr->ia_size > inode->i_size) { 2136c62498d7SJeff Layton i_size_write(inode, attr->ia_size); 2137c62498d7SJeff Layton inode->i_blocks = calc_inode_blocks(attr->ia_size); 2138c62498d7SJeff Layton ci->i_reported_size = attr->ia_size; 2139c62498d7SJeff Layton dirtied |= CEPH_CAP_FILE_EXCL; 2140c62498d7SJeff Layton ia_valid |= ATTR_MTIME; 2141c62498d7SJeff Layton } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 2142c62498d7SJeff Layton attr->ia_size != inode->i_size) { 2143c62498d7SJeff Layton req->r_args.setattr.size = cpu_to_le64(attr->ia_size); 2144c62498d7SJeff Layton req->r_args.setattr.old_size = 2145c62498d7SJeff Layton cpu_to_le64(inode->i_size); 2146c62498d7SJeff Layton mask |= CEPH_SETATTR_SIZE; 2147c62498d7SJeff Layton release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL | 2148c62498d7SJeff Layton CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2149c62498d7SJeff Layton } 2150c62498d7SJeff Layton } 2151355da1ebSSage Weil if (ia_valid & ATTR_MTIME) { 215213442b03SDeepa Dinamani dout("setattr %p mtime %lld.%ld -> %lld.%ld\n", inode, 21539bbeab41SArnd Bergmann inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 21549bbeab41SArnd Bergmann attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); 2155355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 2156355da1ebSSage Weil ci->i_time_warp_seq++; 2157355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2158355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2159355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 216095582b00SDeepa Dinamani timespec64_compare(&inode->i_mtime, 2161355da1ebSSage Weil &attr->ia_mtime) < 0) { 2162355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 2163355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 2164355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 216595582b00SDeepa Dinamani !timespec64_equal(&inode->i_mtime, &attr->ia_mtime)) { 21669bbeab41SArnd Bergmann ceph_encode_timespec64(&req->r_args.setattr.mtime, 21679bbeab41SArnd Bergmann &attr->ia_mtime); 2168355da1ebSSage Weil mask |= CEPH_SETATTR_MTIME; 2169be70489eSYan, Zheng release |= CEPH_CAP_FILE_SHARED | 2170be70489eSYan, Zheng CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; 2171355da1ebSSage Weil } 2172355da1ebSSage Weil } 2173355da1ebSSage Weil 2174355da1ebSSage Weil /* these do nothing */ 2175355da1ebSSage Weil if (ia_valid & ATTR_CTIME) { 2176355da1ebSSage Weil bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| 2177355da1ebSSage Weil ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; 217813442b03SDeepa Dinamani dout("setattr %p ctime %lld.%ld -> %lld.%ld (%s)\n", inode, 21799bbeab41SArnd Bergmann inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 21809bbeab41SArnd Bergmann attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, 2181355da1ebSSage Weil only ? "ctime only" : "ignored"); 2182355da1ebSSage Weil if (only) { 2183355da1ebSSage Weil /* 2184355da1ebSSage Weil * if kernel wants to dirty ctime but nothing else, 2185355da1ebSSage Weil * we need to choose a cap to dirty under, or do 2186355da1ebSSage Weil * a almost-no-op setattr 2187355da1ebSSage Weil */ 2188355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) 2189355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2190355da1ebSSage Weil else if (issued & CEPH_CAP_FILE_EXCL) 2191355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2192355da1ebSSage Weil else if (issued & CEPH_CAP_XATTR_EXCL) 2193355da1ebSSage Weil dirtied |= CEPH_CAP_XATTR_EXCL; 2194355da1ebSSage Weil else 2195355da1ebSSage Weil mask |= CEPH_SETATTR_CTIME; 2196355da1ebSSage Weil } 2197355da1ebSSage Weil } 2198355da1ebSSage Weil if (ia_valid & ATTR_FILE) 2199355da1ebSSage Weil dout("setattr %p ATTR_FILE ... hrm!\n", inode); 2200355da1ebSSage Weil 2201355da1ebSSage Weil if (dirtied) { 2202f66fd9f0SYan, Zheng inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, 2203f66fd9f0SYan, Zheng &prealloc_cf); 22044ca2fea6SYan, Zheng inode->i_ctime = attr->ia_ctime; 2205355da1ebSSage Weil } 2206355da1ebSSage Weil 2207355da1ebSSage Weil release &= issued; 2208be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 2209604d1b02SYan, Zheng if (lock_snap_rwsem) 2210604d1b02SYan, Zheng up_read(&mdsc->snap_rwsem); 2211355da1ebSSage Weil 2212fca65b4aSSage Weil if (inode_dirty_flags) 2213fca65b4aSSage Weil __mark_inode_dirty(inode, inode_dirty_flags); 2214fca65b4aSSage Weil 22157221fe4cSGuangliang Zhao 2216355da1ebSSage Weil if (mask) { 221770b666c3SSage Weil req->r_inode = inode; 221870b666c3SSage Weil ihold(inode); 2219355da1ebSSage Weil req->r_inode_drop = release; 2220355da1ebSSage Weil req->r_args.setattr.mask = cpu_to_le32(mask); 2221355da1ebSSage Weil req->r_num_caps = 1; 22220ed1e90aSArnd Bergmann req->r_stamp = attr->ia_ctime; 2223752c8bdcSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 2224355da1ebSSage Weil } 2225355da1ebSSage Weil dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, 2226355da1ebSSage Weil ceph_cap_string(dirtied), mask); 2227355da1ebSSage Weil 2228355da1ebSSage Weil ceph_mdsc_put_request(req); 22298179a101SYan, Zheng ceph_free_cap_flush(prealloc_cf); 22308179a101SYan, Zheng 22318179a101SYan, Zheng if (err >= 0 && (mask & CEPH_SETATTR_SIZE)) 2232b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 22338179a101SYan, Zheng 2234355da1ebSSage Weil return err; 2235355da1ebSSage Weil } 2236355da1ebSSage Weil 2237355da1ebSSage Weil /* 2238a26feccaSAndreas Gruenbacher * setattr 2239a26feccaSAndreas Gruenbacher */ 2240a26feccaSAndreas Gruenbacher int ceph_setattr(struct dentry *dentry, struct iattr *attr) 2241a26feccaSAndreas Gruenbacher { 2242fd5472edSJan Kara struct inode *inode = d_inode(dentry); 224336a4c72dSChengguang Xu struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 2244fd5472edSJan Kara int err; 2245fd5472edSJan Kara 2246fd5472edSJan Kara if (ceph_snap(inode) != CEPH_NOSNAP) 2247fd5472edSJan Kara return -EROFS; 2248fd5472edSJan Kara 224931051c85SJan Kara err = setattr_prepare(dentry, attr); 2250fd5472edSJan Kara if (err != 0) 2251fd5472edSJan Kara return err; 2252fd5472edSJan Kara 22532b83845fSLuis Henriques if ((attr->ia_valid & ATTR_SIZE) && 225436a4c72dSChengguang Xu attr->ia_size > max(inode->i_size, fsc->max_file_size)) 225536a4c72dSChengguang Xu return -EFBIG; 225636a4c72dSChengguang Xu 225736a4c72dSChengguang Xu if ((attr->ia_valid & ATTR_SIZE) && 22582b83845fSLuis Henriques ceph_quota_is_max_bytes_exceeded(inode, attr->ia_size)) 22592b83845fSLuis Henriques return -EDQUOT; 22602b83845fSLuis Henriques 22618179a101SYan, Zheng err = __ceph_setattr(inode, attr); 22628179a101SYan, Zheng 22638179a101SYan, Zheng if (err >= 0 && (attr->ia_valid & ATTR_MODE)) 22648179a101SYan, Zheng err = posix_acl_chmod(inode, attr->ia_mode); 22658179a101SYan, Zheng 22668179a101SYan, Zheng return err; 2267a26feccaSAndreas Gruenbacher } 2268a26feccaSAndreas Gruenbacher 2269a26feccaSAndreas Gruenbacher /* 2270355da1ebSSage Weil * Verify that we have a lease on the given mask. If not, 2271355da1ebSSage Weil * do a getattr against an mds. 2272355da1ebSSage Weil */ 227301deead0SYan, Zheng int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 227401deead0SYan, Zheng int mask, bool force) 2275355da1ebSSage Weil { 22763d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 22773d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 2278355da1ebSSage Weil struct ceph_mds_request *req; 227949a9f4f6SYan, Zheng int mode; 2280355da1ebSSage Weil int err; 2281355da1ebSSage Weil 2282355da1ebSSage Weil if (ceph_snap(inode) == CEPH_SNAPDIR) { 2283355da1ebSSage Weil dout("do_getattr inode %p SNAPDIR\n", inode); 2284355da1ebSSage Weil return 0; 2285355da1ebSSage Weil } 2286355da1ebSSage Weil 228701deead0SYan, Zheng dout("do_getattr inode %p mask %s mode 0%o\n", 228801deead0SYan, Zheng inode, ceph_cap_string(mask), inode->i_mode); 22891af16d54SXiubo Li if (!force && ceph_caps_issued_mask_metric(ceph_inode(inode), mask, 1)) 2290355da1ebSSage Weil return 0; 2291355da1ebSSage Weil 229249a9f4f6SYan, Zheng mode = (mask & CEPH_STAT_RSTAT) ? USE_AUTH_MDS : USE_ANY_MDS; 229349a9f4f6SYan, Zheng req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, mode); 2294355da1ebSSage Weil if (IS_ERR(req)) 2295355da1ebSSage Weil return PTR_ERR(req); 229670b666c3SSage Weil req->r_inode = inode; 229770b666c3SSage Weil ihold(inode); 2298355da1ebSSage Weil req->r_num_caps = 1; 2299355da1ebSSage Weil req->r_args.getattr.mask = cpu_to_le32(mask); 230001deead0SYan, Zheng req->r_locked_page = locked_page; 2301355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 230201deead0SYan, Zheng if (locked_page && err == 0) { 230301deead0SYan, Zheng u64 inline_version = req->r_reply_info.targeti.inline_version; 230401deead0SYan, Zheng if (inline_version == 0) { 230501deead0SYan, Zheng /* the reply is supposed to contain inline data */ 230601deead0SYan, Zheng err = -EINVAL; 230701deead0SYan, Zheng } else if (inline_version == CEPH_INLINE_NONE) { 230801deead0SYan, Zheng err = -ENODATA; 230901deead0SYan, Zheng } else { 231001deead0SYan, Zheng err = req->r_reply_info.targeti.inline_len; 231101deead0SYan, Zheng } 231201deead0SYan, Zheng } 2313355da1ebSSage Weil ceph_mdsc_put_request(req); 2314355da1ebSSage Weil dout("do_getattr result=%d\n", err); 2315355da1ebSSage Weil return err; 2316355da1ebSSage Weil } 2317355da1ebSSage Weil 2318355da1ebSSage Weil 2319355da1ebSSage Weil /* 2320355da1ebSSage Weil * Check inode permissions. We verify we have a valid value for 2321355da1ebSSage Weil * the AUTH cap, then call the generic handler. 2322355da1ebSSage Weil */ 232310556cb2SAl Viro int ceph_permission(struct inode *inode, int mask) 2324355da1ebSSage Weil { 2325b74c79e9SNick Piggin int err; 2326b74c79e9SNick Piggin 232710556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 2328b74c79e9SNick Piggin return -ECHILD; 2329b74c79e9SNick Piggin 2330508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); 2331355da1ebSSage Weil 2332355da1ebSSage Weil if (!err) 23332830ba7fSAl Viro err = generic_permission(inode, mask); 2334355da1ebSSage Weil return err; 2335355da1ebSSage Weil } 2336355da1ebSSage Weil 2337428bb68aSJeff Layton /* Craft a mask of needed caps given a set of requested statx attrs. */ 2338428bb68aSJeff Layton static int statx_to_caps(u32 want) 2339428bb68aSJeff Layton { 2340428bb68aSJeff Layton int mask = 0; 2341428bb68aSJeff Layton 234258981784SJeff Layton if (want & (STATX_MODE|STATX_UID|STATX_GID|STATX_CTIME|STATX_BTIME)) 2343428bb68aSJeff Layton mask |= CEPH_CAP_AUTH_SHARED; 2344428bb68aSJeff Layton 2345428bb68aSJeff Layton if (want & (STATX_NLINK|STATX_CTIME)) 2346428bb68aSJeff Layton mask |= CEPH_CAP_LINK_SHARED; 2347428bb68aSJeff Layton 2348428bb68aSJeff Layton if (want & (STATX_ATIME|STATX_MTIME|STATX_CTIME|STATX_SIZE| 2349428bb68aSJeff Layton STATX_BLOCKS)) 2350428bb68aSJeff Layton mask |= CEPH_CAP_FILE_SHARED; 2351428bb68aSJeff Layton 2352428bb68aSJeff Layton if (want & (STATX_CTIME)) 2353428bb68aSJeff Layton mask |= CEPH_CAP_XATTR_SHARED; 2354428bb68aSJeff Layton 2355428bb68aSJeff Layton return mask; 2356428bb68aSJeff Layton } 2357428bb68aSJeff Layton 2358355da1ebSSage Weil /* 2359428bb68aSJeff Layton * Get all the attributes. If we have sufficient caps for the requested attrs, 2360428bb68aSJeff Layton * then we can avoid talking to the MDS at all. 2361355da1ebSSage Weil */ 2362a528d35eSDavid Howells int ceph_getattr(const struct path *path, struct kstat *stat, 2363a528d35eSDavid Howells u32 request_mask, unsigned int flags) 2364355da1ebSSage Weil { 2365a528d35eSDavid Howells struct inode *inode = d_inode(path->dentry); 2366232d4b01SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 236758981784SJeff Layton u32 valid_mask = STATX_BASIC_STATS; 2368428bb68aSJeff Layton int err = 0; 2369355da1ebSSage Weil 2370428bb68aSJeff Layton /* Skip the getattr altogether if we're asked not to sync */ 2371428bb68aSJeff Layton if (!(flags & AT_STATX_DONT_SYNC)) { 2372428bb68aSJeff Layton err = ceph_do_getattr(inode, statx_to_caps(request_mask), 2373428bb68aSJeff Layton flags & AT_STATX_FORCE_SYNC); 2374428bb68aSJeff Layton if (err) 2375428bb68aSJeff Layton return err; 2376428bb68aSJeff Layton } 2377428bb68aSJeff Layton 2378355da1ebSSage Weil generic_fillattr(inode, stat); 2379ebce3eb2SJeff Layton stat->ino = ceph_present_inode(inode); 238058981784SJeff Layton 238158981784SJeff Layton /* 238258981784SJeff Layton * btime on newly-allocated inodes is 0, so if this is still set to 238358981784SJeff Layton * that, then assume that it's not valid. 238458981784SJeff Layton */ 238558981784SJeff Layton if (ci->i_btime.tv_sec || ci->i_btime.tv_nsec) { 238658981784SJeff Layton stat->btime = ci->i_btime; 238758981784SJeff Layton valid_mask |= STATX_BTIME; 238858981784SJeff Layton } 238958981784SJeff Layton 239075c9627eSYan, Zheng if (ceph_snap(inode) == CEPH_NOSNAP) 239175c9627eSYan, Zheng stat->dev = inode->i_sb->s_dev; 2392355da1ebSSage Weil else 239375c9627eSYan, Zheng stat->dev = ci->i_snapid_map ? ci->i_snapid_map->dev : 0; 239475c9627eSYan, Zheng 2395232d4b01SSage Weil if (S_ISDIR(inode->i_mode)) { 23961c1266bbSYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), 23971c1266bbSYehuda Sadeh RBYTES)) 2398232d4b01SSage Weil stat->size = ci->i_rbytes; 23991c1266bbSYehuda Sadeh else 24001c1266bbSYehuda Sadeh stat->size = ci->i_files + ci->i_subdirs; 2401232d4b01SSage Weil stat->blocks = 0; 2402355da1ebSSage Weil stat->blksize = 65536; 24038c6286f1SLuis Henriques /* 24048c6286f1SLuis Henriques * Some applications rely on the number of st_nlink 24058c6286f1SLuis Henriques * value on directories to be either 0 (if unlinked) 24068c6286f1SLuis Henriques * or 2 + number of subdirectories. 24078c6286f1SLuis Henriques */ 24088c6286f1SLuis Henriques if (stat->nlink == 1) 24098c6286f1SLuis Henriques /* '.' + '..' + subdirs */ 24108c6286f1SLuis Henriques stat->nlink = 1 + 1 + ci->i_subdirs; 2411355da1ebSSage Weil } 2412428bb68aSJeff Layton 241358981784SJeff Layton stat->result_mask = request_mask & valid_mask; 2414355da1ebSSage Weil return err; 2415355da1ebSSage Weil } 2416