13d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 2355da1ebSSage Weil 3355da1ebSSage Weil #include <linux/module.h> 4355da1ebSSage Weil #include <linux/fs.h> 5355da1ebSSage Weil #include <linux/slab.h> 6355da1ebSSage Weil #include <linux/string.h> 7355da1ebSSage Weil #include <linux/uaccess.h> 8355da1ebSSage Weil #include <linux/kernel.h> 9355da1ebSSage Weil #include <linux/writeback.h> 10355da1ebSSage Weil #include <linux/vmalloc.h> 114db658eaSLinus Torvalds #include <linux/posix_acl.h> 123e7fbe9cSYan, Zheng #include <linux/random.h> 13a407846eSYan, Zheng #include <linux/sort.h> 14355da1ebSSage Weil 15355da1ebSSage Weil #include "super.h" 163d14c5d2SYehuda Sadeh #include "mds_client.h" 1799ccbd22SMilosz Tanski #include "cache.h" 183d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 19355da1ebSSage Weil 20355da1ebSSage Weil /* 21355da1ebSSage Weil * Ceph inode operations 22355da1ebSSage Weil * 23355da1ebSSage Weil * Implement basic inode helpers (get, alloc) and inode ops (getattr, 24355da1ebSSage Weil * setattr, etc.), xattr helpers, and helpers for assimilating 25355da1ebSSage Weil * metadata returned by the MDS into our cache. 26355da1ebSSage Weil * 27355da1ebSSage Weil * Also define helpers for doing asynchronous writeback, invalidation, 28355da1ebSSage Weil * and truncation for the benefit of those who can't afford to block 29355da1ebSSage Weil * (typically because they are in the message handler path). 30355da1ebSSage Weil */ 31355da1ebSSage Weil 32355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops; 33355da1ebSSage Weil 343c6f6b79SSage Weil static void ceph_invalidate_work(struct work_struct *work); 353c6f6b79SSage Weil static void ceph_writeback_work(struct work_struct *work); 363c6f6b79SSage Weil static void ceph_vmtruncate_work(struct work_struct *work); 37355da1ebSSage Weil 38355da1ebSSage Weil /* 39355da1ebSSage Weil * find or create an inode, given the ceph ino number 40355da1ebSSage Weil */ 41ad1fee96SYehuda Sadeh static int ceph_set_ino_cb(struct inode *inode, void *data) 42ad1fee96SYehuda Sadeh { 43ad1fee96SYehuda Sadeh ceph_inode(inode)->i_vino = *(struct ceph_vino *)data; 44ad1fee96SYehuda Sadeh inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data); 45ad1fee96SYehuda Sadeh return 0; 46ad1fee96SYehuda Sadeh } 47ad1fee96SYehuda Sadeh 48355da1ebSSage Weil struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) 49355da1ebSSage Weil { 50355da1ebSSage Weil struct inode *inode; 51355da1ebSSage Weil ino_t t = ceph_vino_to_ino(vino); 52355da1ebSSage Weil 53355da1ebSSage Weil inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino); 54355da1ebSSage Weil if (inode == NULL) 55355da1ebSSage Weil return ERR_PTR(-ENOMEM); 56355da1ebSSage Weil if (inode->i_state & I_NEW) { 57355da1ebSSage Weil dout("get_inode created new inode %p %llx.%llx ino %llx\n", 58355da1ebSSage Weil inode, ceph_vinop(inode), (u64)inode->i_ino); 59355da1ebSSage Weil unlock_new_inode(inode); 60355da1ebSSage Weil } 61355da1ebSSage Weil 62355da1ebSSage Weil dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino, 63355da1ebSSage Weil vino.snap, inode); 64355da1ebSSage Weil return inode; 65355da1ebSSage Weil } 66355da1ebSSage Weil 67355da1ebSSage Weil /* 68355da1ebSSage Weil * get/constuct snapdir inode for a given directory 69355da1ebSSage Weil */ 70355da1ebSSage Weil struct inode *ceph_get_snapdir(struct inode *parent) 71355da1ebSSage Weil { 72355da1ebSSage Weil struct ceph_vino vino = { 73355da1ebSSage Weil .ino = ceph_ino(parent), 74355da1ebSSage Weil .snap = CEPH_SNAPDIR, 75355da1ebSSage Weil }; 76355da1ebSSage Weil struct inode *inode = ceph_get_inode(parent->i_sb, vino); 77b377ff13SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 78355da1ebSSage Weil 79355da1ebSSage Weil BUG_ON(!S_ISDIR(parent->i_mode)); 80355da1ebSSage Weil if (IS_ERR(inode)) 817e34bc52SJulia Lawall return inode; 82355da1ebSSage Weil inode->i_mode = parent->i_mode; 83355da1ebSSage Weil inode->i_uid = parent->i_uid; 84355da1ebSSage Weil inode->i_gid = parent->i_gid; 8538c48b5fSYan, Zheng inode->i_op = &ceph_snapdir_iops; 8638c48b5fSYan, Zheng inode->i_fop = &ceph_snapdir_fops; 87b377ff13SSage Weil ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ 88b377ff13SSage Weil ci->i_rbytes = 0; 89355da1ebSSage Weil return inode; 90355da1ebSSage Weil } 91355da1ebSSage Weil 92355da1ebSSage Weil const struct inode_operations ceph_file_iops = { 93355da1ebSSage Weil .permission = ceph_permission, 94355da1ebSSage Weil .setattr = ceph_setattr, 95355da1ebSSage Weil .getattr = ceph_getattr, 96355da1ebSSage Weil .setxattr = ceph_setxattr, 97355da1ebSSage Weil .getxattr = ceph_getxattr, 98355da1ebSSage Weil .listxattr = ceph_listxattr, 99355da1ebSSage Weil .removexattr = ceph_removexattr, 1007221fe4cSGuangliang Zhao .get_acl = ceph_get_acl, 10172466d0bSSage Weil .set_acl = ceph_set_acl, 102355da1ebSSage Weil }; 103355da1ebSSage Weil 104355da1ebSSage Weil 105355da1ebSSage Weil /* 106355da1ebSSage Weil * We use a 'frag tree' to keep track of the MDS's directory fragments 107355da1ebSSage Weil * for a given inode (usually there is just a single fragment). We 108355da1ebSSage Weil * need to know when a child frag is delegated to a new MDS, or when 109355da1ebSSage Weil * it is flagged as replicated, so we can direct our requests 110355da1ebSSage Weil * accordingly. 111355da1ebSSage Weil */ 112355da1ebSSage Weil 113355da1ebSSage Weil /* 114355da1ebSSage Weil * find/create a frag in the tree 115355da1ebSSage Weil */ 116355da1ebSSage Weil static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, 117355da1ebSSage Weil u32 f) 118355da1ebSSage Weil { 119355da1ebSSage Weil struct rb_node **p; 120355da1ebSSage Weil struct rb_node *parent = NULL; 121355da1ebSSage Weil struct ceph_inode_frag *frag; 122355da1ebSSage Weil int c; 123355da1ebSSage Weil 124355da1ebSSage Weil p = &ci->i_fragtree.rb_node; 125355da1ebSSage Weil while (*p) { 126355da1ebSSage Weil parent = *p; 127355da1ebSSage Weil frag = rb_entry(parent, struct ceph_inode_frag, node); 128355da1ebSSage Weil c = ceph_frag_compare(f, frag->frag); 129355da1ebSSage Weil if (c < 0) 130355da1ebSSage Weil p = &(*p)->rb_left; 131355da1ebSSage Weil else if (c > 0) 132355da1ebSSage Weil p = &(*p)->rb_right; 133355da1ebSSage Weil else 134355da1ebSSage Weil return frag; 135355da1ebSSage Weil } 136355da1ebSSage Weil 137355da1ebSSage Weil frag = kmalloc(sizeof(*frag), GFP_NOFS); 138355da1ebSSage Weil if (!frag) { 139355da1ebSSage Weil pr_err("__get_or_create_frag ENOMEM on %p %llx.%llx " 140355da1ebSSage Weil "frag %x\n", &ci->vfs_inode, 141355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 142355da1ebSSage Weil return ERR_PTR(-ENOMEM); 143355da1ebSSage Weil } 144355da1ebSSage Weil frag->frag = f; 145355da1ebSSage Weil frag->split_by = 0; 146355da1ebSSage Weil frag->mds = -1; 147355da1ebSSage Weil frag->ndist = 0; 148355da1ebSSage Weil 149355da1ebSSage Weil rb_link_node(&frag->node, parent, p); 150355da1ebSSage Weil rb_insert_color(&frag->node, &ci->i_fragtree); 151355da1ebSSage Weil 152355da1ebSSage Weil dout("get_or_create_frag added %llx.%llx frag %x\n", 153355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 154355da1ebSSage Weil return frag; 155355da1ebSSage Weil } 156355da1ebSSage Weil 157355da1ebSSage Weil /* 158355da1ebSSage Weil * find a specific frag @f 159355da1ebSSage Weil */ 160355da1ebSSage Weil struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) 161355da1ebSSage Weil { 162355da1ebSSage Weil struct rb_node *n = ci->i_fragtree.rb_node; 163355da1ebSSage Weil 164355da1ebSSage Weil while (n) { 165355da1ebSSage Weil struct ceph_inode_frag *frag = 166355da1ebSSage Weil rb_entry(n, struct ceph_inode_frag, node); 167355da1ebSSage Weil int c = ceph_frag_compare(f, frag->frag); 168355da1ebSSage Weil if (c < 0) 169355da1ebSSage Weil n = n->rb_left; 170355da1ebSSage Weil else if (c > 0) 171355da1ebSSage Weil n = n->rb_right; 172355da1ebSSage Weil else 173355da1ebSSage Weil return frag; 174355da1ebSSage Weil } 175355da1ebSSage Weil return NULL; 176355da1ebSSage Weil } 177355da1ebSSage Weil 178355da1ebSSage Weil /* 179355da1ebSSage Weil * Choose frag containing the given value @v. If @pfrag is 180355da1ebSSage Weil * specified, copy the frag delegation info to the caller if 181355da1ebSSage Weil * it is present. 182355da1ebSSage Weil */ 1833e7fbe9cSYan, Zheng static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 1843e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 185355da1ebSSage Weil { 186355da1ebSSage Weil u32 t = ceph_frag_make(0, 0); 187355da1ebSSage Weil struct ceph_inode_frag *frag; 188355da1ebSSage Weil unsigned nway, i; 189355da1ebSSage Weil u32 n; 190355da1ebSSage Weil 191355da1ebSSage Weil if (found) 192355da1ebSSage Weil *found = 0; 193355da1ebSSage Weil 194355da1ebSSage Weil while (1) { 195355da1ebSSage Weil WARN_ON(!ceph_frag_contains_value(t, v)); 196355da1ebSSage Weil frag = __ceph_find_frag(ci, t); 197355da1ebSSage Weil if (!frag) 198355da1ebSSage Weil break; /* t is a leaf */ 199355da1ebSSage Weil if (frag->split_by == 0) { 200355da1ebSSage Weil if (pfrag) 201355da1ebSSage Weil memcpy(pfrag, frag, sizeof(*pfrag)); 202355da1ebSSage Weil if (found) 203355da1ebSSage Weil *found = 1; 204355da1ebSSage Weil break; 205355da1ebSSage Weil } 206355da1ebSSage Weil 207355da1ebSSage Weil /* choose child */ 208355da1ebSSage Weil nway = 1 << frag->split_by; 209355da1ebSSage Weil dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, 210355da1ebSSage Weil frag->split_by, nway); 211355da1ebSSage Weil for (i = 0; i < nway; i++) { 212355da1ebSSage Weil n = ceph_frag_make_child(t, frag->split_by, i); 213355da1ebSSage Weil if (ceph_frag_contains_value(n, v)) { 214355da1ebSSage Weil t = n; 215355da1ebSSage Weil break; 216355da1ebSSage Weil } 217355da1ebSSage Weil } 218355da1ebSSage Weil BUG_ON(i == nway); 219355da1ebSSage Weil } 220355da1ebSSage Weil dout("choose_frag(%x) = %x\n", v, t); 221355da1ebSSage Weil 222355da1ebSSage Weil return t; 223355da1ebSSage Weil } 224355da1ebSSage Weil 2253e7fbe9cSYan, Zheng u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2263e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 2273e7fbe9cSYan, Zheng { 2283e7fbe9cSYan, Zheng u32 ret; 2293e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 2303e7fbe9cSYan, Zheng ret = __ceph_choose_frag(ci, v, pfrag, found); 2313e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 2323e7fbe9cSYan, Zheng return ret; 2333e7fbe9cSYan, Zheng } 2343e7fbe9cSYan, Zheng 235355da1ebSSage Weil /* 236355da1ebSSage Weil * Process dirfrag (delegation) info from the mds. Include leaf 237355da1ebSSage Weil * fragment in tree ONLY if ndist > 0. Otherwise, only 238355da1ebSSage Weil * branches/splits are included in i_fragtree) 239355da1ebSSage Weil */ 240355da1ebSSage Weil static int ceph_fill_dirfrag(struct inode *inode, 241355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo) 242355da1ebSSage Weil { 243355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 244355da1ebSSage Weil struct ceph_inode_frag *frag; 245355da1ebSSage Weil u32 id = le32_to_cpu(dirinfo->frag); 246355da1ebSSage Weil int mds = le32_to_cpu(dirinfo->auth); 247355da1ebSSage Weil int ndist = le32_to_cpu(dirinfo->ndist); 2488d08503cSYan, Zheng int diri_auth = -1; 249355da1ebSSage Weil int i; 250355da1ebSSage Weil int err = 0; 251355da1ebSSage Weil 2528d08503cSYan, Zheng spin_lock(&ci->i_ceph_lock); 2538d08503cSYan, Zheng if (ci->i_auth_cap) 2548d08503cSYan, Zheng diri_auth = ci->i_auth_cap->mds; 2558d08503cSYan, Zheng spin_unlock(&ci->i_ceph_lock); 2568d08503cSYan, Zheng 257355da1ebSSage Weil mutex_lock(&ci->i_fragtree_mutex); 2588d08503cSYan, Zheng if (ndist == 0 && mds == diri_auth) { 259355da1ebSSage Weil /* no delegation info needed. */ 260355da1ebSSage Weil frag = __ceph_find_frag(ci, id); 261355da1ebSSage Weil if (!frag) 262355da1ebSSage Weil goto out; 263355da1ebSSage Weil if (frag->split_by == 0) { 264355da1ebSSage Weil /* tree leaf, remove */ 265355da1ebSSage Weil dout("fill_dirfrag removed %llx.%llx frag %x" 266355da1ebSSage Weil " (no ref)\n", ceph_vinop(inode), id); 267355da1ebSSage Weil rb_erase(&frag->node, &ci->i_fragtree); 268355da1ebSSage Weil kfree(frag); 269355da1ebSSage Weil } else { 270355da1ebSSage Weil /* tree branch, keep and clear */ 271355da1ebSSage Weil dout("fill_dirfrag cleared %llx.%llx frag %x" 272355da1ebSSage Weil " referral\n", ceph_vinop(inode), id); 273355da1ebSSage Weil frag->mds = -1; 274355da1ebSSage Weil frag->ndist = 0; 275355da1ebSSage Weil } 276355da1ebSSage Weil goto out; 277355da1ebSSage Weil } 278355da1ebSSage Weil 279355da1ebSSage Weil 280355da1ebSSage Weil /* find/add this frag to store mds delegation info */ 281355da1ebSSage Weil frag = __get_or_create_frag(ci, id); 282355da1ebSSage Weil if (IS_ERR(frag)) { 283355da1ebSSage Weil /* this is not the end of the world; we can continue 284355da1ebSSage Weil with bad/inaccurate delegation info */ 285355da1ebSSage Weil pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", 286355da1ebSSage Weil ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); 287355da1ebSSage Weil err = -ENOMEM; 288355da1ebSSage Weil goto out; 289355da1ebSSage Weil } 290355da1ebSSage Weil 291355da1ebSSage Weil frag->mds = mds; 292355da1ebSSage Weil frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); 293355da1ebSSage Weil for (i = 0; i < frag->ndist; i++) 294355da1ebSSage Weil frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); 295355da1ebSSage Weil dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", 296355da1ebSSage Weil ceph_vinop(inode), frag->frag, frag->ndist); 297355da1ebSSage Weil 298355da1ebSSage Weil out: 299355da1ebSSage Weil mutex_unlock(&ci->i_fragtree_mutex); 300355da1ebSSage Weil return err; 301355da1ebSSage Weil } 302355da1ebSSage Weil 303a407846eSYan, Zheng static int frag_tree_split_cmp(const void *l, const void *r) 304a407846eSYan, Zheng { 305a407846eSYan, Zheng struct ceph_frag_tree_split *ls = (struct ceph_frag_tree_split*)l; 306a407846eSYan, Zheng struct ceph_frag_tree_split *rs = (struct ceph_frag_tree_split*)r; 307a407846eSYan, Zheng return ceph_frag_compare(ls->frag, rs->frag); 308a407846eSYan, Zheng } 309a407846eSYan, Zheng 3103e7fbe9cSYan, Zheng static int ceph_fill_fragtree(struct inode *inode, 3113e7fbe9cSYan, Zheng struct ceph_frag_tree_head *fragtree, 3123e7fbe9cSYan, Zheng struct ceph_mds_reply_dirfrag *dirinfo) 3133e7fbe9cSYan, Zheng { 3143e7fbe9cSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 3153e7fbe9cSYan, Zheng struct ceph_inode_frag *frag; 3163e7fbe9cSYan, Zheng struct rb_node *rb_node; 3173e7fbe9cSYan, Zheng int i; 3183e7fbe9cSYan, Zheng u32 id, nsplits; 3193e7fbe9cSYan, Zheng bool update = false; 3203e7fbe9cSYan, Zheng 3213e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 3223e7fbe9cSYan, Zheng nsplits = le32_to_cpu(fragtree->nsplits); 3233e7fbe9cSYan, Zheng if (nsplits) { 3243e7fbe9cSYan, Zheng i = prandom_u32() % nsplits; 3253e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3263e7fbe9cSYan, Zheng if (!__ceph_find_frag(ci, id)) 3273e7fbe9cSYan, Zheng update = true; 3283e7fbe9cSYan, Zheng } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { 3293e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3303e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3313e7fbe9cSYan, Zheng if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) 3323e7fbe9cSYan, Zheng update = true; 3333e7fbe9cSYan, Zheng } 3343e7fbe9cSYan, Zheng if (!update && dirinfo) { 3353e7fbe9cSYan, Zheng id = le32_to_cpu(dirinfo->frag); 3363e7fbe9cSYan, Zheng if (id != __ceph_choose_frag(ci, id, NULL, NULL)) 3373e7fbe9cSYan, Zheng update = true; 3383e7fbe9cSYan, Zheng } 3393e7fbe9cSYan, Zheng if (!update) 3403e7fbe9cSYan, Zheng goto out_unlock; 3413e7fbe9cSYan, Zheng 342a407846eSYan, Zheng if (nsplits > 1) { 343a407846eSYan, Zheng sort(fragtree->splits, nsplits, sizeof(fragtree->splits[0]), 344a407846eSYan, Zheng frag_tree_split_cmp, NULL); 345a407846eSYan, Zheng } 346a407846eSYan, Zheng 3473e7fbe9cSYan, Zheng dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); 3483e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3493e7fbe9cSYan, Zheng for (i = 0; i < nsplits; i++) { 3503e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3513e7fbe9cSYan, Zheng frag = NULL; 3523e7fbe9cSYan, Zheng while (rb_node) { 3533e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3543e7fbe9cSYan, Zheng if (ceph_frag_compare(frag->frag, id) >= 0) { 3553e7fbe9cSYan, Zheng if (frag->frag != id) 3563e7fbe9cSYan, Zheng frag = NULL; 3573e7fbe9cSYan, Zheng else 3583e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3593e7fbe9cSYan, Zheng break; 3603e7fbe9cSYan, Zheng } 3613e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3623e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 3633e7fbe9cSYan, Zheng kfree(frag); 3643e7fbe9cSYan, Zheng frag = NULL; 3653e7fbe9cSYan, Zheng } 3663e7fbe9cSYan, Zheng if (!frag) { 3673e7fbe9cSYan, Zheng frag = __get_or_create_frag(ci, id); 3683e7fbe9cSYan, Zheng if (IS_ERR(frag)) 3693e7fbe9cSYan, Zheng continue; 3703e7fbe9cSYan, Zheng } 3713e7fbe9cSYan, Zheng frag->split_by = le32_to_cpu(fragtree->splits[i].by); 3723e7fbe9cSYan, Zheng dout(" frag %x split by %d\n", frag->frag, frag->split_by); 3733e7fbe9cSYan, Zheng } 3743e7fbe9cSYan, Zheng while (rb_node) { 3753e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3763e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3773e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 3783e7fbe9cSYan, Zheng kfree(frag); 3793e7fbe9cSYan, Zheng } 3803e7fbe9cSYan, Zheng out_unlock: 3813e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 3823e7fbe9cSYan, Zheng return 0; 3833e7fbe9cSYan, Zheng } 384355da1ebSSage Weil 385355da1ebSSage Weil /* 386355da1ebSSage Weil * initialize a newly allocated inode. 387355da1ebSSage Weil */ 388355da1ebSSage Weil struct inode *ceph_alloc_inode(struct super_block *sb) 389355da1ebSSage Weil { 390355da1ebSSage Weil struct ceph_inode_info *ci; 391355da1ebSSage Weil int i; 392355da1ebSSage Weil 393355da1ebSSage Weil ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); 394355da1ebSSage Weil if (!ci) 395355da1ebSSage Weil return NULL; 396355da1ebSSage Weil 397355da1ebSSage Weil dout("alloc_inode %p\n", &ci->vfs_inode); 398355da1ebSSage Weil 399be655596SSage Weil spin_lock_init(&ci->i_ceph_lock); 400be655596SSage Weil 401355da1ebSSage Weil ci->i_version = 0; 40231c542a1SYan, Zheng ci->i_inline_version = 0; 403355da1ebSSage Weil ci->i_time_warp_seq = 0; 404355da1ebSSage Weil ci->i_ceph_flags = 0; 405fdd4e158SYan, Zheng atomic64_set(&ci->i_ordered_count, 1); 406fdd4e158SYan, Zheng atomic64_set(&ci->i_release_count, 1); 407fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], 0); 408fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], 0); 409355da1ebSSage Weil ci->i_symlink = NULL; 410355da1ebSSage Weil 4116c0f3af7SSage Weil memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); 4125ea5c5e0SYan, Zheng ci->i_pool_ns_len = 0; 4136c0f3af7SSage Weil 414355da1ebSSage Weil ci->i_fragtree = RB_ROOT; 415355da1ebSSage Weil mutex_init(&ci->i_fragtree_mutex); 416355da1ebSSage Weil 417355da1ebSSage Weil ci->i_xattrs.blob = NULL; 418355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 419355da1ebSSage Weil ci->i_xattrs.dirty = false; 420355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 421355da1ebSSage Weil ci->i_xattrs.count = 0; 422355da1ebSSage Weil ci->i_xattrs.names_size = 0; 423355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 424355da1ebSSage Weil ci->i_xattrs.version = 0; 425355da1ebSSage Weil ci->i_xattrs.index_version = 0; 426355da1ebSSage Weil 427355da1ebSSage Weil ci->i_caps = RB_ROOT; 428355da1ebSSage Weil ci->i_auth_cap = NULL; 429355da1ebSSage Weil ci->i_dirty_caps = 0; 430355da1ebSSage Weil ci->i_flushing_caps = 0; 431355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_dirty_item); 432355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_flushing_item); 433f66fd9f0SYan, Zheng ci->i_prealloc_cap_flush = NULL; 434553adfd9SYan, Zheng ci->i_cap_flush_tree = RB_ROOT; 435355da1ebSSage Weil init_waitqueue_head(&ci->i_cap_wq); 436355da1ebSSage Weil ci->i_hold_caps_min = 0; 437355da1ebSSage Weil ci->i_hold_caps_max = 0; 438355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_delay_list); 439355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_snaps); 440355da1ebSSage Weil ci->i_head_snapc = NULL; 441355da1ebSSage Weil ci->i_snap_caps = 0; 442355da1ebSSage Weil 443355da1ebSSage Weil for (i = 0; i < CEPH_FILE_MODE_NUM; i++) 444355da1ebSSage Weil ci->i_nr_by_mode[i] = 0; 445355da1ebSSage Weil 446b0d7c223SYan, Zheng mutex_init(&ci->i_truncate_mutex); 447355da1ebSSage Weil ci->i_truncate_seq = 0; 448355da1ebSSage Weil ci->i_truncate_size = 0; 449355da1ebSSage Weil ci->i_truncate_pending = 0; 450355da1ebSSage Weil 451355da1ebSSage Weil ci->i_max_size = 0; 452355da1ebSSage Weil ci->i_reported_size = 0; 453355da1ebSSage Weil ci->i_wanted_max_size = 0; 454355da1ebSSage Weil ci->i_requested_max_size = 0; 455355da1ebSSage Weil 456355da1ebSSage Weil ci->i_pin_ref = 0; 457355da1ebSSage Weil ci->i_rd_ref = 0; 458355da1ebSSage Weil ci->i_rdcache_ref = 0; 459355da1ebSSage Weil ci->i_wr_ref = 0; 460d3d0720dSHenry C Chang ci->i_wb_ref = 0; 461355da1ebSSage Weil ci->i_wrbuffer_ref = 0; 462355da1ebSSage Weil ci->i_wrbuffer_ref_head = 0; 463355da1ebSSage Weil ci->i_shared_gen = 0; 464355da1ebSSage Weil ci->i_rdcache_gen = 0; 465355da1ebSSage Weil ci->i_rdcache_revoking = 0; 466355da1ebSSage Weil 467355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_writes); 468355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_dirops); 46968cd5b4bSYan, Zheng INIT_LIST_HEAD(&ci->i_unsafe_iops); 470355da1ebSSage Weil spin_lock_init(&ci->i_unsafe_lock); 471355da1ebSSage Weil 472355da1ebSSage Weil ci->i_snap_realm = NULL; 473355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_realm_item); 474355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_flush_item); 475355da1ebSSage Weil 4763c6f6b79SSage Weil INIT_WORK(&ci->i_wb_work, ceph_writeback_work); 4773c6f6b79SSage Weil INIT_WORK(&ci->i_pg_inv_work, ceph_invalidate_work); 478355da1ebSSage Weil 479355da1ebSSage Weil INIT_WORK(&ci->i_vmtruncate_work, ceph_vmtruncate_work); 480355da1ebSSage Weil 48199ccbd22SMilosz Tanski ceph_fscache_inode_init(ci); 48299ccbd22SMilosz Tanski 483355da1ebSSage Weil return &ci->vfs_inode; 484355da1ebSSage Weil } 485355da1ebSSage Weil 486fa0d7e3dSNick Piggin static void ceph_i_callback(struct rcu_head *head) 487fa0d7e3dSNick Piggin { 488fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 489fa0d7e3dSNick Piggin struct ceph_inode_info *ci = ceph_inode(inode); 490fa0d7e3dSNick Piggin 491fa0d7e3dSNick Piggin kmem_cache_free(ceph_inode_cachep, ci); 492fa0d7e3dSNick Piggin } 493fa0d7e3dSNick Piggin 494355da1ebSSage Weil void ceph_destroy_inode(struct inode *inode) 495355da1ebSSage Weil { 496355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 497355da1ebSSage Weil struct ceph_inode_frag *frag; 498355da1ebSSage Weil struct rb_node *n; 499355da1ebSSage Weil 500355da1ebSSage Weil dout("destroy_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); 501355da1ebSSage Weil 50299ccbd22SMilosz Tanski ceph_fscache_unregister_inode_cookie(ci); 50399ccbd22SMilosz Tanski 504355da1ebSSage Weil ceph_queue_caps_release(inode); 505355da1ebSSage Weil 5068b218b8aSSage Weil /* 5078b218b8aSSage Weil * we may still have a snap_realm reference if there are stray 508d9df2783SYan, Zheng * caps in i_snap_caps. 5098b218b8aSSage Weil */ 5108b218b8aSSage Weil if (ci->i_snap_realm) { 5118b218b8aSSage Weil struct ceph_mds_client *mdsc = 5123d14c5d2SYehuda Sadeh ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; 5138b218b8aSSage Weil struct ceph_snap_realm *realm = ci->i_snap_realm; 5148b218b8aSSage Weil 5158b218b8aSSage Weil dout(" dropping residual ref to snap realm %p\n", realm); 5168b218b8aSSage Weil spin_lock(&realm->inodes_with_caps_lock); 5178b218b8aSSage Weil list_del_init(&ci->i_snap_realm_item); 5188b218b8aSSage Weil spin_unlock(&realm->inodes_with_caps_lock); 5198b218b8aSSage Weil ceph_put_snap_realm(mdsc, realm); 5208b218b8aSSage Weil } 5218b218b8aSSage Weil 522355da1ebSSage Weil kfree(ci->i_symlink); 523355da1ebSSage Weil while ((n = rb_first(&ci->i_fragtree)) != NULL) { 524355da1ebSSage Weil frag = rb_entry(n, struct ceph_inode_frag, node); 525355da1ebSSage Weil rb_erase(n, &ci->i_fragtree); 526355da1ebSSage Weil kfree(frag); 527355da1ebSSage Weil } 528355da1ebSSage Weil 529355da1ebSSage Weil __ceph_destroy_xattrs(ci); 530b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 531355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 532b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 533355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 534355da1ebSSage Weil 535fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, ceph_i_callback); 536355da1ebSSage Weil } 537355da1ebSSage Weil 5389f12bd11SYan, Zheng int ceph_drop_inode(struct inode *inode) 5399f12bd11SYan, Zheng { 5409f12bd11SYan, Zheng /* 5419f12bd11SYan, Zheng * Positve dentry and corresponding inode are always accompanied 5429f12bd11SYan, Zheng * in MDS reply. So no need to keep inode in the cache after 5439f12bd11SYan, Zheng * dropping all its aliases. 5449f12bd11SYan, Zheng */ 5459f12bd11SYan, Zheng return 1; 5469f12bd11SYan, Zheng } 5479f12bd11SYan, Zheng 548355da1ebSSage Weil /* 549355da1ebSSage Weil * Helpers to fill in size, ctime, mtime, and atime. We have to be 550355da1ebSSage Weil * careful because either the client or MDS may have more up to date 551355da1ebSSage Weil * info, depending on which capabilities are held, and whether 552355da1ebSSage Weil * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime 553355da1ebSSage Weil * and size are monotonically increasing, except when utimes() or 554355da1ebSSage Weil * truncate() increments the corresponding _seq values.) 555355da1ebSSage Weil */ 556355da1ebSSage Weil int ceph_fill_file_size(struct inode *inode, int issued, 557355da1ebSSage Weil u32 truncate_seq, u64 truncate_size, u64 size) 558355da1ebSSage Weil { 559355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 560355da1ebSSage Weil int queue_trunc = 0; 561355da1ebSSage Weil 562355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || 563355da1ebSSage Weil (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { 564355da1ebSSage Weil dout("size %lld -> %llu\n", inode->i_size, size); 565a3d714c3SYan, Zheng if (size > 0 && S_ISDIR(inode->i_mode)) { 566a3d714c3SYan, Zheng pr_err("fill_file_size non-zero size for directory\n"); 567a3d714c3SYan, Zheng size = 0; 568a3d714c3SYan, Zheng } 56999c88e69SYan, Zheng i_size_write(inode, size); 570355da1ebSSage Weil inode->i_blocks = (size + (1<<9) - 1) >> 9; 571355da1ebSSage Weil ci->i_reported_size = size; 572355da1ebSSage Weil if (truncate_seq != ci->i_truncate_seq) { 573355da1ebSSage Weil dout("truncate_seq %u -> %u\n", 574355da1ebSSage Weil ci->i_truncate_seq, truncate_seq); 575355da1ebSSage Weil ci->i_truncate_seq = truncate_seq; 576b0d7c223SYan, Zheng 577b0d7c223SYan, Zheng /* the MDS should have revoked these caps */ 578b0d7c223SYan, Zheng WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | 579b0d7c223SYan, Zheng CEPH_CAP_FILE_RD | 580b0d7c223SYan, Zheng CEPH_CAP_FILE_WR | 581b0d7c223SYan, Zheng CEPH_CAP_FILE_LAZYIO)); 5823d497d85SYehuda Sadeh /* 5833d497d85SYehuda Sadeh * If we hold relevant caps, or in the case where we're 5843d497d85SYehuda Sadeh * not the only client referencing this file and we 5853d497d85SYehuda Sadeh * don't hold those caps, then we need to check whether 5863d497d85SYehuda Sadeh * the file is either opened or mmaped 5873d497d85SYehuda Sadeh */ 588b0d7c223SYan, Zheng if ((issued & (CEPH_CAP_FILE_CACHE| 589b0d7c223SYan, Zheng CEPH_CAP_FILE_BUFFER)) || 5903d497d85SYehuda Sadeh mapping_mapped(inode->i_mapping) || 5913d497d85SYehuda Sadeh __ceph_caps_file_wanted(ci)) { 592355da1ebSSage Weil ci->i_truncate_pending++; 593355da1ebSSage Weil queue_trunc = 1; 594355da1ebSSage Weil } 595355da1ebSSage Weil } 596355da1ebSSage Weil } 597355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && 598355da1ebSSage Weil ci->i_truncate_size != truncate_size) { 599355da1ebSSage Weil dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, 600355da1ebSSage Weil truncate_size); 601355da1ebSSage Weil ci->i_truncate_size = truncate_size; 602355da1ebSSage Weil } 60399ccbd22SMilosz Tanski 60499ccbd22SMilosz Tanski if (queue_trunc) 60599ccbd22SMilosz Tanski ceph_fscache_invalidate(inode); 60699ccbd22SMilosz Tanski 607355da1ebSSage Weil return queue_trunc; 608355da1ebSSage Weil } 609355da1ebSSage Weil 610355da1ebSSage Weil void ceph_fill_file_time(struct inode *inode, int issued, 611355da1ebSSage Weil u64 time_warp_seq, struct timespec *ctime, 612355da1ebSSage Weil struct timespec *mtime, struct timespec *atime) 613355da1ebSSage Weil { 614355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 615355da1ebSSage Weil int warn = 0; 616355da1ebSSage Weil 617355da1ebSSage Weil if (issued & (CEPH_CAP_FILE_EXCL| 618355da1ebSSage Weil CEPH_CAP_FILE_WR| 619d8672d64SSage Weil CEPH_CAP_FILE_BUFFER| 620d8672d64SSage Weil CEPH_CAP_AUTH_EXCL| 621d8672d64SSage Weil CEPH_CAP_XATTR_EXCL)) { 622355da1ebSSage Weil if (timespec_compare(ctime, &inode->i_ctime) > 0) { 623355da1ebSSage Weil dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n", 624355da1ebSSage Weil inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 625355da1ebSSage Weil ctime->tv_sec, ctime->tv_nsec); 626355da1ebSSage Weil inode->i_ctime = *ctime; 627355da1ebSSage Weil } 628355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { 629355da1ebSSage Weil /* the MDS did a utimes() */ 630355da1ebSSage Weil dout("mtime %ld.%09ld -> %ld.%09ld " 631355da1ebSSage Weil "tw %d -> %d\n", 632355da1ebSSage Weil inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 633355da1ebSSage Weil mtime->tv_sec, mtime->tv_nsec, 634355da1ebSSage Weil ci->i_time_warp_seq, (int)time_warp_seq); 635355da1ebSSage Weil 636355da1ebSSage Weil inode->i_mtime = *mtime; 637355da1ebSSage Weil inode->i_atime = *atime; 638355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 639355da1ebSSage Weil } else if (time_warp_seq == ci->i_time_warp_seq) { 640355da1ebSSage Weil /* nobody did utimes(); take the max */ 641355da1ebSSage Weil if (timespec_compare(mtime, &inode->i_mtime) > 0) { 642355da1ebSSage Weil dout("mtime %ld.%09ld -> %ld.%09ld inc\n", 643355da1ebSSage Weil inode->i_mtime.tv_sec, 644355da1ebSSage Weil inode->i_mtime.tv_nsec, 645355da1ebSSage Weil mtime->tv_sec, mtime->tv_nsec); 646355da1ebSSage Weil inode->i_mtime = *mtime; 647355da1ebSSage Weil } 648355da1ebSSage Weil if (timespec_compare(atime, &inode->i_atime) > 0) { 649355da1ebSSage Weil dout("atime %ld.%09ld -> %ld.%09ld inc\n", 650355da1ebSSage Weil inode->i_atime.tv_sec, 651355da1ebSSage Weil inode->i_atime.tv_nsec, 652355da1ebSSage Weil atime->tv_sec, atime->tv_nsec); 653355da1ebSSage Weil inode->i_atime = *atime; 654355da1ebSSage Weil } 655355da1ebSSage Weil } else if (issued & CEPH_CAP_FILE_EXCL) { 656355da1ebSSage Weil /* we did a utimes(); ignore mds values */ 657355da1ebSSage Weil } else { 658355da1ebSSage Weil warn = 1; 659355da1ebSSage Weil } 660355da1ebSSage Weil } else { 661d8672d64SSage Weil /* we have no write|excl caps; whatever the MDS says is true */ 662355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { 663355da1ebSSage Weil inode->i_ctime = *ctime; 664355da1ebSSage Weil inode->i_mtime = *mtime; 665355da1ebSSage Weil inode->i_atime = *atime; 666355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 667355da1ebSSage Weil } else { 668355da1ebSSage Weil warn = 1; 669355da1ebSSage Weil } 670355da1ebSSage Weil } 671355da1ebSSage Weil if (warn) /* time_warp_seq shouldn't go backwards */ 672355da1ebSSage Weil dout("%p mds time_warp_seq %llu < %u\n", 673355da1ebSSage Weil inode, time_warp_seq, ci->i_time_warp_seq); 674355da1ebSSage Weil } 675355da1ebSSage Weil 676355da1ebSSage Weil /* 677355da1ebSSage Weil * Populate an inode based on info from mds. May be called on new or 678355da1ebSSage Weil * existing inodes. 679355da1ebSSage Weil */ 68001deead0SYan, Zheng static int fill_inode(struct inode *inode, struct page *locked_page, 681355da1ebSSage Weil struct ceph_mds_reply_info_in *iinfo, 682355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo, 683355da1ebSSage Weil struct ceph_mds_session *session, 684355da1ebSSage Weil unsigned long ttl_from, int cap_fmode, 685355da1ebSSage Weil struct ceph_cap_reservation *caps_reservation) 686355da1ebSSage Weil { 687d9df2783SYan, Zheng struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; 688355da1ebSSage Weil struct ceph_mds_reply_inode *info = iinfo->in; 689355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 690f98a128aSYan, Zheng int issued = 0, implemented, new_issued; 691355da1ebSSage Weil struct timespec mtime, atime, ctime; 692355da1ebSSage Weil struct ceph_buffer *xattr_blob = NULL; 693d9df2783SYan, Zheng struct ceph_cap *new_cap = NULL; 694355da1ebSSage Weil int err = 0; 695d9df2783SYan, Zheng bool wake = false; 696f98a128aSYan, Zheng bool queue_trunc = false; 697f98a128aSYan, Zheng bool new_version = false; 69831c542a1SYan, Zheng bool fill_inline = false; 699355da1ebSSage Weil 700355da1ebSSage Weil dout("fill_inode %p ino %llx.%llx v %llu had %llu\n", 701355da1ebSSage Weil inode, ceph_vinop(inode), le64_to_cpu(info->version), 702355da1ebSSage Weil ci->i_version); 703355da1ebSSage Weil 704d9df2783SYan, Zheng /* prealloc new cap struct */ 705d9df2783SYan, Zheng if (info->cap.caps && ceph_snap(inode) == CEPH_NOSNAP) 706d9df2783SYan, Zheng new_cap = ceph_get_cap(mdsc, caps_reservation); 707d9df2783SYan, Zheng 708355da1ebSSage Weil /* 709355da1ebSSage Weil * prealloc xattr data, if it looks like we'll need it. only 710355da1ebSSage Weil * if len > 4 (meaning there are actually xattrs; the first 4 711355da1ebSSage Weil * bytes are the xattr count). 712355da1ebSSage Weil */ 713355da1ebSSage Weil if (iinfo->xattr_len > 4) { 714b6c1d5b8SSage Weil xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); 715355da1ebSSage Weil if (!xattr_blob) 716355da1ebSSage Weil pr_err("fill_inode ENOMEM xattr blob %d bytes\n", 717355da1ebSSage Weil iinfo->xattr_len); 718355da1ebSSage Weil } 719355da1ebSSage Weil 720be655596SSage Weil spin_lock(&ci->i_ceph_lock); 721355da1ebSSage Weil 722355da1ebSSage Weil /* 723355da1ebSSage Weil * provided version will be odd if inode value is projected, 7248bd59e01SSage Weil * even if stable. skip the update if we have newer stable 7258bd59e01SSage Weil * info (ours>=theirs, e.g. due to racing mds replies), unless 7268bd59e01SSage Weil * we are getting projected (unstable) info (in which case the 7278bd59e01SSage Weil * version is odd, and we want ours>theirs). 7288bd59e01SSage Weil * us them 7298bd59e01SSage Weil * 2 2 skip 7308bd59e01SSage Weil * 3 2 skip 7318bd59e01SSage Weil * 3 3 update 732355da1ebSSage Weil */ 733f98a128aSYan, Zheng if (ci->i_version == 0 || 734f98a128aSYan, Zheng ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 735f98a128aSYan, Zheng le64_to_cpu(info->version) > (ci->i_version & ~1))) 736f98a128aSYan, Zheng new_version = true; 737355da1ebSSage Weil 738355da1ebSSage Weil issued = __ceph_caps_issued(ci, &implemented); 739355da1ebSSage Weil issued |= implemented | __ceph_caps_dirty(ci); 740f98a128aSYan, Zheng new_issued = ~issued & le32_to_cpu(info->cap.caps); 741355da1ebSSage Weil 742355da1ebSSage Weil /* update inode */ 743355da1ebSSage Weil ci->i_version = le64_to_cpu(info->version); 744355da1ebSSage Weil inode->i_version++; 745355da1ebSSage Weil inode->i_rdev = le32_to_cpu(info->rdev); 746f98a128aSYan, Zheng inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; 747355da1ebSSage Weil 748f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && 749f98a128aSYan, Zheng (issued & CEPH_CAP_AUTH_EXCL) == 0) { 750355da1ebSSage Weil inode->i_mode = le32_to_cpu(info->mode); 751ab871b90SEric W. Biederman inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); 752ab871b90SEric W. Biederman inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); 753355da1ebSSage Weil dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, 754bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 755bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid)); 756355da1ebSSage Weil } 757355da1ebSSage Weil 758f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && 759f98a128aSYan, Zheng (issued & CEPH_CAP_LINK_EXCL) == 0) 760bfe86848SMiklos Szeredi set_nlink(inode, le32_to_cpu(info->nlink)); 761355da1ebSSage Weil 762f98a128aSYan, Zheng if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { 763355da1ebSSage Weil /* be careful with mtime, atime, size */ 764355da1ebSSage Weil ceph_decode_timespec(&atime, &info->atime); 765355da1ebSSage Weil ceph_decode_timespec(&mtime, &info->mtime); 766355da1ebSSage Weil ceph_decode_timespec(&ctime, &info->ctime); 767f98a128aSYan, Zheng ceph_fill_file_time(inode, issued, 768f98a128aSYan, Zheng le32_to_cpu(info->time_warp_seq), 769f98a128aSYan, Zheng &ctime, &mtime, &atime); 770f98a128aSYan, Zheng } 771f98a128aSYan, Zheng 772f98a128aSYan, Zheng if (new_version || 773f98a128aSYan, Zheng (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { 77410183a69SYan, Zheng if (ci->i_layout.fl_pg_pool != info->layout.fl_pg_pool) 77510183a69SYan, Zheng ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; 776f98a128aSYan, Zheng ci->i_layout = info->layout; 7775ea5c5e0SYan, Zheng ci->i_pool_ns_len = iinfo->pool_ns_len; 77810183a69SYan, Zheng 779355da1ebSSage Weil queue_trunc = ceph_fill_file_size(inode, issued, 780355da1ebSSage Weil le32_to_cpu(info->truncate_seq), 781355da1ebSSage Weil le64_to_cpu(info->truncate_size), 782355da1ebSSage Weil le64_to_cpu(info->size)); 783f98a128aSYan, Zheng /* only update max_size on auth cap */ 784f98a128aSYan, Zheng if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 785f98a128aSYan, Zheng ci->i_max_size != le64_to_cpu(info->max_size)) { 786f98a128aSYan, Zheng dout("max_size %lld -> %llu\n", ci->i_max_size, 787f98a128aSYan, Zheng le64_to_cpu(info->max_size)); 788f98a128aSYan, Zheng ci->i_max_size = le64_to_cpu(info->max_size); 789f98a128aSYan, Zheng } 790f98a128aSYan, Zheng } 791355da1ebSSage Weil 792355da1ebSSage Weil /* xattrs */ 793355da1ebSSage Weil /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ 794508b32d8SYan, Zheng if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && 795355da1ebSSage Weil le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { 796355da1ebSSage Weil if (ci->i_xattrs.blob) 797355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 798355da1ebSSage Weil ci->i_xattrs.blob = xattr_blob; 799355da1ebSSage Weil if (xattr_blob) 800355da1ebSSage Weil memcpy(ci->i_xattrs.blob->vec.iov_base, 801355da1ebSSage Weil iinfo->xattr_data, iinfo->xattr_len); 802355da1ebSSage Weil ci->i_xattrs.version = le64_to_cpu(info->xattr_version); 8037221fe4cSGuangliang Zhao ceph_forget_all_cached_acls(inode); 804a6424e48SSage Weil xattr_blob = NULL; 805355da1ebSSage Weil } 806355da1ebSSage Weil 807355da1ebSSage Weil inode->i_mapping->a_ops = &ceph_aops; 808355da1ebSSage Weil 809355da1ebSSage Weil switch (inode->i_mode & S_IFMT) { 810355da1ebSSage Weil case S_IFIFO: 811355da1ebSSage Weil case S_IFBLK: 812355da1ebSSage Weil case S_IFCHR: 813355da1ebSSage Weil case S_IFSOCK: 814355da1ebSSage Weil init_special_inode(inode, inode->i_mode, inode->i_rdev); 815355da1ebSSage Weil inode->i_op = &ceph_file_iops; 816355da1ebSSage Weil break; 817355da1ebSSage Weil case S_IFREG: 818355da1ebSSage Weil inode->i_op = &ceph_file_iops; 819355da1ebSSage Weil inode->i_fop = &ceph_file_fops; 820355da1ebSSage Weil break; 821355da1ebSSage Weil case S_IFLNK: 822355da1ebSSage Weil inode->i_op = &ceph_symlink_iops; 823355da1ebSSage Weil if (!ci->i_symlink) { 824810339ecSXi Wang u32 symlen = iinfo->symlink_len; 825355da1ebSSage Weil char *sym; 826355da1ebSSage Weil 827be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 828355da1ebSSage Weil 829810339ecSXi Wang err = -EINVAL; 83099c88e69SYan, Zheng if (WARN_ON(symlen != i_size_read(inode))) 831810339ecSXi Wang goto out; 832810339ecSXi Wang 833355da1ebSSage Weil err = -ENOMEM; 834810339ecSXi Wang sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); 835355da1ebSSage Weil if (!sym) 836355da1ebSSage Weil goto out; 837355da1ebSSage Weil 838be655596SSage Weil spin_lock(&ci->i_ceph_lock); 839355da1ebSSage Weil if (!ci->i_symlink) 840355da1ebSSage Weil ci->i_symlink = sym; 841355da1ebSSage Weil else 842355da1ebSSage Weil kfree(sym); /* lost a race */ 843355da1ebSSage Weil } 844ac194dccSAl Viro inode->i_link = ci->i_symlink; 845355da1ebSSage Weil break; 846355da1ebSSage Weil case S_IFDIR: 847355da1ebSSage Weil inode->i_op = &ceph_dir_iops; 848355da1ebSSage Weil inode->i_fop = &ceph_dir_fops; 849355da1ebSSage Weil 85014303d20SSage Weil ci->i_dir_layout = iinfo->dir_layout; 85114303d20SSage Weil 852355da1ebSSage Weil ci->i_files = le64_to_cpu(info->files); 853355da1ebSSage Weil ci->i_subdirs = le64_to_cpu(info->subdirs); 854355da1ebSSage Weil ci->i_rbytes = le64_to_cpu(info->rbytes); 855355da1ebSSage Weil ci->i_rfiles = le64_to_cpu(info->rfiles); 856355da1ebSSage Weil ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); 857355da1ebSSage Weil ceph_decode_timespec(&ci->i_rctime, &info->rctime); 858355da1ebSSage Weil break; 859355da1ebSSage Weil default: 860355da1ebSSage Weil pr_err("fill_inode %llx.%llx BAD mode 0%o\n", 861355da1ebSSage Weil ceph_vinop(inode), inode->i_mode); 862355da1ebSSage Weil } 863355da1ebSSage Weil 864355da1ebSSage Weil /* were we issued a capability? */ 865355da1ebSSage Weil if (info->cap.caps) { 866355da1ebSSage Weil if (ceph_snap(inode) == CEPH_NOSNAP) { 8672f92b3d0SYan, Zheng unsigned caps = le32_to_cpu(info->cap.caps); 868355da1ebSSage Weil ceph_add_cap(inode, session, 869355da1ebSSage Weil le64_to_cpu(info->cap.cap_id), 8702f92b3d0SYan, Zheng cap_fmode, caps, 871355da1ebSSage Weil le32_to_cpu(info->cap.wanted), 872355da1ebSSage Weil le32_to_cpu(info->cap.seq), 873355da1ebSSage Weil le32_to_cpu(info->cap.mseq), 874355da1ebSSage Weil le64_to_cpu(info->cap.realm), 875d9df2783SYan, Zheng info->cap.flags, &new_cap); 8762f92b3d0SYan, Zheng 8772f92b3d0SYan, Zheng /* set dir completion flag? */ 8782f92b3d0SYan, Zheng if (S_ISDIR(inode->i_mode) && 8792f92b3d0SYan, Zheng ci->i_files == 0 && ci->i_subdirs == 0 && 8802f92b3d0SYan, Zheng (caps & CEPH_CAP_FILE_SHARED) && 8812f92b3d0SYan, Zheng (issued & CEPH_CAP_FILE_EXCL) == 0 && 8822f92b3d0SYan, Zheng !__ceph_dir_is_complete(ci)) { 8832f92b3d0SYan, Zheng dout(" marking %p complete (empty)\n", inode); 884fdd4e158SYan, Zheng i_size_write(inode, 0); 8852f92b3d0SYan, Zheng __ceph_dir_set_complete(ci, 886fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count), 887fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count)); 8882f92b3d0SYan, Zheng } 8892f92b3d0SYan, Zheng 890d9df2783SYan, Zheng wake = true; 891355da1ebSSage Weil } else { 892355da1ebSSage Weil dout(" %p got snap_caps %s\n", inode, 893355da1ebSSage Weil ceph_cap_string(le32_to_cpu(info->cap.caps))); 894355da1ebSSage Weil ci->i_snap_caps |= le32_to_cpu(info->cap.caps); 895355da1ebSSage Weil if (cap_fmode >= 0) 896355da1ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 897355da1ebSSage Weil } 89804d000ebSSage Weil } else if (cap_fmode >= 0) { 899f3ae1b97SFabian Frederick pr_warn("mds issued no caps on %llx.%llx\n", 90004d000ebSSage Weil ceph_vinop(inode)); 90104d000ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 902355da1ebSSage Weil } 90331c542a1SYan, Zheng 90431c542a1SYan, Zheng if (iinfo->inline_version > 0 && 90531c542a1SYan, Zheng iinfo->inline_version >= ci->i_inline_version) { 90631c542a1SYan, Zheng int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; 90731c542a1SYan, Zheng ci->i_inline_version = iinfo->inline_version; 90831c542a1SYan, Zheng if (ci->i_inline_version != CEPH_INLINE_NONE && 90901deead0SYan, Zheng (locked_page || 91001deead0SYan, Zheng (le32_to_cpu(info->cap.caps) & cache_caps))) 91131c542a1SYan, Zheng fill_inline = true; 91231c542a1SYan, Zheng } 91331c542a1SYan, Zheng 914355da1ebSSage Weil spin_unlock(&ci->i_ceph_lock); 915355da1ebSSage Weil 91631c542a1SYan, Zheng if (fill_inline) 91701deead0SYan, Zheng ceph_fill_inline_data(inode, locked_page, 91831c542a1SYan, Zheng iinfo->inline_data, iinfo->inline_len); 91931c542a1SYan, Zheng 920d9df2783SYan, Zheng if (wake) 921d9df2783SYan, Zheng wake_up_all(&ci->i_cap_wq); 922d9df2783SYan, Zheng 923355da1ebSSage Weil /* queue truncate if we saw i_size decrease */ 924355da1ebSSage Weil if (queue_trunc) 925355da1ebSSage Weil ceph_queue_vmtruncate(inode); 926355da1ebSSage Weil 927355da1ebSSage Weil /* populate frag tree */ 9283e7fbe9cSYan, Zheng if (S_ISDIR(inode->i_mode)) 9293e7fbe9cSYan, Zheng ceph_fill_fragtree(inode, &info->fragtree, dirinfo); 930355da1ebSSage Weil 931355da1ebSSage Weil /* update delegation info? */ 932355da1ebSSage Weil if (dirinfo) 933355da1ebSSage Weil ceph_fill_dirfrag(inode, dirinfo); 934355da1ebSSage Weil 935355da1ebSSage Weil err = 0; 936355da1ebSSage Weil out: 937d9df2783SYan, Zheng if (new_cap) 938d9df2783SYan, Zheng ceph_put_cap(mdsc, new_cap); 939b6c1d5b8SSage Weil if (xattr_blob) 940355da1ebSSage Weil ceph_buffer_put(xattr_blob); 941355da1ebSSage Weil return err; 942355da1ebSSage Weil } 943355da1ebSSage Weil 944355da1ebSSage Weil /* 945355da1ebSSage Weil * caller should hold session s_mutex. 946355da1ebSSage Weil */ 947355da1ebSSage Weil static void update_dentry_lease(struct dentry *dentry, 948355da1ebSSage Weil struct ceph_mds_reply_lease *lease, 949355da1ebSSage Weil struct ceph_mds_session *session, 950355da1ebSSage Weil unsigned long from_time) 951355da1ebSSage Weil { 952355da1ebSSage Weil struct ceph_dentry_info *di = ceph_dentry(dentry); 953355da1ebSSage Weil long unsigned duration = le32_to_cpu(lease->duration_ms); 954355da1ebSSage Weil long unsigned ttl = from_time + (duration * HZ) / 1000; 955355da1ebSSage Weil long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; 956355da1ebSSage Weil struct inode *dir; 957355da1ebSSage Weil 958355da1ebSSage Weil /* only track leases on regular dentries */ 959355da1ebSSage Weil if (dentry->d_op != &ceph_dentry_ops) 960355da1ebSSage Weil return; 961355da1ebSSage Weil 962355da1ebSSage Weil spin_lock(&dentry->d_lock); 9632f90b852SSage Weil dout("update_dentry_lease %p duration %lu ms ttl %lu\n", 9642f90b852SSage Weil dentry, duration, ttl); 965355da1ebSSage Weil 966355da1ebSSage Weil /* make lease_rdcache_gen match directory */ 9672b0143b5SDavid Howells dir = d_inode(dentry->d_parent); 968355da1ebSSage Weil di->lease_shared_gen = ceph_inode(dir)->i_shared_gen; 969355da1ebSSage Weil 9702f90b852SSage Weil if (duration == 0) 971355da1ebSSage Weil goto out_unlock; 972355da1ebSSage Weil 973355da1ebSSage Weil if (di->lease_gen == session->s_cap_gen && 974355da1ebSSage Weil time_before(ttl, dentry->d_time)) 975355da1ebSSage Weil goto out_unlock; /* we already have a newer lease. */ 976355da1ebSSage Weil 977355da1ebSSage Weil if (di->lease_session && di->lease_session != session) 978355da1ebSSage Weil goto out_unlock; 979355da1ebSSage Weil 980355da1ebSSage Weil ceph_dentry_lru_touch(dentry); 981355da1ebSSage Weil 982355da1ebSSage Weil if (!di->lease_session) 983355da1ebSSage Weil di->lease_session = ceph_get_mds_session(session); 984355da1ebSSage Weil di->lease_gen = session->s_cap_gen; 985355da1ebSSage Weil di->lease_seq = le32_to_cpu(lease->seq); 986355da1ebSSage Weil di->lease_renew_after = half_ttl; 987355da1ebSSage Weil di->lease_renew_from = 0; 988355da1ebSSage Weil dentry->d_time = ttl; 989355da1ebSSage Weil out_unlock: 990355da1ebSSage Weil spin_unlock(&dentry->d_lock); 991355da1ebSSage Weil return; 992355da1ebSSage Weil } 993355da1ebSSage Weil 994355da1ebSSage Weil /* 9951cd3935bSSage Weil * splice a dentry to an inode. 9961cd3935bSSage Weil * caller must hold directory i_mutex for this to be safe. 9971cd3935bSSage Weil */ 998f7380af0SAl Viro static struct dentry *splice_dentry(struct dentry *dn, struct inode *in) 9991cd3935bSSage Weil { 10001cd3935bSSage Weil struct dentry *realdn; 10011cd3935bSSage Weil 10022b0143b5SDavid Howells BUG_ON(d_inode(dn)); 10031cd3935bSSage Weil 10041cd3935bSSage Weil /* dn must be unhashed */ 10051cd3935bSSage Weil if (!d_unhashed(dn)) 10061cd3935bSSage Weil d_drop(dn); 100741d28bcaSAl Viro realdn = d_splice_alias(in, dn); 10081cd3935bSSage Weil if (IS_ERR(realdn)) { 1009d69ed05aSSage Weil pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", 1010d69ed05aSSage Weil PTR_ERR(realdn), dn, in, ceph_vinop(in)); 10111cd3935bSSage Weil dn = realdn; /* note realdn contains the error */ 10121cd3935bSSage Weil goto out; 10131cd3935bSSage Weil } else if (realdn) { 10141cd3935bSSage Weil dout("dn %p (%d) spliced with %p (%d) " 10151cd3935bSSage Weil "inode %p ino %llx.%llx\n", 101684d08fa8SAl Viro dn, d_count(dn), 101784d08fa8SAl Viro realdn, d_count(realdn), 10182b0143b5SDavid Howells d_inode(realdn), ceph_vinop(d_inode(realdn))); 10191cd3935bSSage Weil dput(dn); 10201cd3935bSSage Weil dn = realdn; 10211cd3935bSSage Weil } else { 10221cd3935bSSage Weil BUG_ON(!ceph_dentry(dn)); 10231cd3935bSSage Weil dout("dn %p attached to %p ino %llx.%llx\n", 10242b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn))); 10251cd3935bSSage Weil } 10261cd3935bSSage Weil out: 10271cd3935bSSage Weil return dn; 10281cd3935bSSage Weil } 10291cd3935bSSage Weil 10301cd3935bSSage Weil /* 1031355da1ebSSage Weil * Incorporate results into the local cache. This is either just 1032355da1ebSSage Weil * one inode, or a directory, dentry, and possibly linked-to inode (e.g., 1033355da1ebSSage Weil * after a lookup). 1034355da1ebSSage Weil * 1035355da1ebSSage Weil * A reply may contain 1036355da1ebSSage Weil * a directory inode along with a dentry. 1037355da1ebSSage Weil * and/or a target inode 1038355da1ebSSage Weil * 1039355da1ebSSage Weil * Called with snap_rwsem (read). 1040355da1ebSSage Weil */ 1041355da1ebSSage Weil int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, 1042355da1ebSSage Weil struct ceph_mds_session *session) 1043355da1ebSSage Weil { 1044355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1045355da1ebSSage Weil struct inode *in = NULL; 1046355da1ebSSage Weil struct ceph_vino vino; 10473d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(sb); 1048355da1ebSSage Weil int err = 0; 1049355da1ebSSage Weil 1050355da1ebSSage Weil dout("fill_trace %p is_dentry %d is_target %d\n", req, 1051355da1ebSSage Weil rinfo->head->is_dentry, rinfo->head->is_target); 1052355da1ebSSage Weil 1053355da1ebSSage Weil #if 0 1054355da1ebSSage Weil /* 1055355da1ebSSage Weil * Debugging hook: 1056355da1ebSSage Weil * 1057355da1ebSSage Weil * If we resend completed ops to a recovering mds, we get no 1058355da1ebSSage Weil * trace. Since that is very rare, pretend this is the case 1059355da1ebSSage Weil * to ensure the 'no trace' handlers in the callers behave. 1060355da1ebSSage Weil * 1061355da1ebSSage Weil * Fill in inodes unconditionally to avoid breaking cap 1062355da1ebSSage Weil * invariants. 1063355da1ebSSage Weil */ 1064355da1ebSSage Weil if (rinfo->head->op & CEPH_MDS_OP_WRITE) { 1065355da1ebSSage Weil pr_info("fill_trace faking empty trace on %lld %s\n", 1066355da1ebSSage Weil req->r_tid, ceph_mds_op_name(rinfo->head->op)); 1067355da1ebSSage Weil if (rinfo->head->is_dentry) { 1068355da1ebSSage Weil rinfo->head->is_dentry = 0; 1069355da1ebSSage Weil err = fill_inode(req->r_locked_dir, 1070355da1ebSSage Weil &rinfo->diri, rinfo->dirfrag, 1071355da1ebSSage Weil session, req->r_request_started, -1); 1072355da1ebSSage Weil } 1073355da1ebSSage Weil if (rinfo->head->is_target) { 1074355da1ebSSage Weil rinfo->head->is_target = 0; 1075355da1ebSSage Weil ininfo = rinfo->targeti.in; 1076355da1ebSSage Weil vino.ino = le64_to_cpu(ininfo->ino); 1077355da1ebSSage Weil vino.snap = le64_to_cpu(ininfo->snapid); 1078355da1ebSSage Weil in = ceph_get_inode(sb, vino); 1079355da1ebSSage Weil err = fill_inode(in, &rinfo->targeti, NULL, 1080355da1ebSSage Weil session, req->r_request_started, 1081355da1ebSSage Weil req->r_fmode); 1082355da1ebSSage Weil iput(in); 1083355da1ebSSage Weil } 1084355da1ebSSage Weil } 1085355da1ebSSage Weil #endif 1086355da1ebSSage Weil 1087355da1ebSSage Weil if (!rinfo->head->is_target && !rinfo->head->is_dentry) { 1088355da1ebSSage Weil dout("fill_trace reply is empty!\n"); 1089167c9e35SSage Weil if (rinfo->head->result == 0 && req->r_locked_dir) 1090167c9e35SSage Weil ceph_invalidate_dir_request(req); 1091355da1ebSSage Weil return 0; 1092355da1ebSSage Weil } 1093355da1ebSSage Weil 1094355da1ebSSage Weil if (rinfo->head->is_dentry) { 10955b1daecdSSage Weil struct inode *dir = req->r_locked_dir; 10965b1daecdSSage Weil 10976c5e50faSSage Weil if (dir) { 109801deead0SYan, Zheng err = fill_inode(dir, NULL, 109901deead0SYan, Zheng &rinfo->diri, rinfo->dirfrag, 11005b1daecdSSage Weil session, req->r_request_started, -1, 11015b1daecdSSage Weil &req->r_caps_reservation); 11025b1daecdSSage Weil if (err < 0) 110319913b4eSYan, Zheng goto done; 11046c5e50faSSage Weil } else { 11056c5e50faSSage Weil WARN_ON_ONCE(1); 11066c5e50faSSage Weil } 110719913b4eSYan, Zheng 110819913b4eSYan, Zheng if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) { 110919913b4eSYan, Zheng struct qstr dname; 111019913b4eSYan, Zheng struct dentry *dn, *parent; 111119913b4eSYan, Zheng 111219913b4eSYan, Zheng BUG_ON(!rinfo->head->is_target); 111319913b4eSYan, Zheng BUG_ON(req->r_dentry); 111419913b4eSYan, Zheng 111519913b4eSYan, Zheng parent = d_find_any_alias(dir); 111619913b4eSYan, Zheng BUG_ON(!parent); 111719913b4eSYan, Zheng 111819913b4eSYan, Zheng dname.name = rinfo->dname; 111919913b4eSYan, Zheng dname.len = rinfo->dname_len; 112019913b4eSYan, Zheng dname.hash = full_name_hash(dname.name, dname.len); 112119913b4eSYan, Zheng vino.ino = le64_to_cpu(rinfo->targeti.in->ino); 112219913b4eSYan, Zheng vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 112319913b4eSYan, Zheng retry_lookup: 112419913b4eSYan, Zheng dn = d_lookup(parent, &dname); 112519913b4eSYan, Zheng dout("d_lookup on parent=%p name=%.*s got %p\n", 112619913b4eSYan, Zheng parent, dname.len, dname.name, dn); 112719913b4eSYan, Zheng 112819913b4eSYan, Zheng if (!dn) { 112919913b4eSYan, Zheng dn = d_alloc(parent, &dname); 113019913b4eSYan, Zheng dout("d_alloc %p '%.*s' = %p\n", parent, 113119913b4eSYan, Zheng dname.len, dname.name, dn); 113219913b4eSYan, Zheng if (dn == NULL) { 113319913b4eSYan, Zheng dput(parent); 113419913b4eSYan, Zheng err = -ENOMEM; 113519913b4eSYan, Zheng goto done; 113619913b4eSYan, Zheng } 113719913b4eSYan, Zheng err = ceph_init_dentry(dn); 113819913b4eSYan, Zheng if (err < 0) { 113919913b4eSYan, Zheng dput(dn); 114019913b4eSYan, Zheng dput(parent); 114119913b4eSYan, Zheng goto done; 114219913b4eSYan, Zheng } 11432b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 11442b0143b5SDavid Howells (ceph_ino(d_inode(dn)) != vino.ino || 11452b0143b5SDavid Howells ceph_snap(d_inode(dn)) != vino.snap)) { 114619913b4eSYan, Zheng dout(" dn %p points to wrong inode %p\n", 11472b0143b5SDavid Howells dn, d_inode(dn)); 114819913b4eSYan, Zheng d_delete(dn); 114919913b4eSYan, Zheng dput(dn); 115019913b4eSYan, Zheng goto retry_lookup; 115119913b4eSYan, Zheng } 115219913b4eSYan, Zheng 115319913b4eSYan, Zheng req->r_dentry = dn; 115419913b4eSYan, Zheng dput(parent); 115519913b4eSYan, Zheng } 11565b1daecdSSage Weil } 11575b1daecdSSage Weil 115886b58d13SYan, Zheng if (rinfo->head->is_target) { 115986b58d13SYan, Zheng vino.ino = le64_to_cpu(rinfo->targeti.in->ino); 116086b58d13SYan, Zheng vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 116186b58d13SYan, Zheng 116286b58d13SYan, Zheng in = ceph_get_inode(sb, vino); 116386b58d13SYan, Zheng if (IS_ERR(in)) { 116486b58d13SYan, Zheng err = PTR_ERR(in); 116586b58d13SYan, Zheng goto done; 116686b58d13SYan, Zheng } 116786b58d13SYan, Zheng req->r_target_inode = in; 116886b58d13SYan, Zheng 116901deead0SYan, Zheng err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL, 117086b58d13SYan, Zheng session, req->r_request_started, 117148193012SYan, Zheng (!req->r_aborted && rinfo->head->result == 0) ? 117286b58d13SYan, Zheng req->r_fmode : -1, 117386b58d13SYan, Zheng &req->r_caps_reservation); 117486b58d13SYan, Zheng if (err < 0) { 117586b58d13SYan, Zheng pr_err("fill_inode badness %p %llx.%llx\n", 117686b58d13SYan, Zheng in, ceph_vinop(in)); 117786b58d13SYan, Zheng goto done; 117886b58d13SYan, Zheng } 117986b58d13SYan, Zheng } 118086b58d13SYan, Zheng 11819358c6d4SSage Weil /* 11829358c6d4SSage Weil * ignore null lease/binding on snapdir ENOENT, or else we 11839358c6d4SSage Weil * will have trouble splicing in the virtual snapdir later 11849358c6d4SSage Weil */ 11859358c6d4SSage Weil if (rinfo->head->is_dentry && !req->r_aborted && 11866c5e50faSSage Weil req->r_locked_dir && 11879358c6d4SSage Weil (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, 11883d14c5d2SYehuda Sadeh fsc->mount_options->snapdir_name, 11899358c6d4SSage Weil req->r_dentry->d_name.len))) { 1190355da1ebSSage Weil /* 1191355da1ebSSage Weil * lookup link rename : null -> possibly existing inode 1192355da1ebSSage Weil * mknod symlink mkdir : null -> new inode 1193355da1ebSSage Weil * unlink : linked -> null 1194355da1ebSSage Weil */ 1195355da1ebSSage Weil struct inode *dir = req->r_locked_dir; 1196355da1ebSSage Weil struct dentry *dn = req->r_dentry; 1197355da1ebSSage Weil bool have_dir_cap, have_lease; 1198355da1ebSSage Weil 1199355da1ebSSage Weil BUG_ON(!dn); 1200355da1ebSSage Weil BUG_ON(!dir); 12012b0143b5SDavid Howells BUG_ON(d_inode(dn->d_parent) != dir); 1202355da1ebSSage Weil BUG_ON(ceph_ino(dir) != 1203355da1ebSSage Weil le64_to_cpu(rinfo->diri.in->ino)); 1204355da1ebSSage Weil BUG_ON(ceph_snap(dir) != 1205355da1ebSSage Weil le64_to_cpu(rinfo->diri.in->snapid)); 1206355da1ebSSage Weil 1207355da1ebSSage Weil /* do we have a lease on the whole dir? */ 1208355da1ebSSage Weil have_dir_cap = 1209355da1ebSSage Weil (le32_to_cpu(rinfo->diri.in->cap.caps) & 1210355da1ebSSage Weil CEPH_CAP_FILE_SHARED); 1211355da1ebSSage Weil 1212355da1ebSSage Weil /* do we have a dn lease? */ 1213355da1ebSSage Weil have_lease = have_dir_cap || 12142f90b852SSage Weil le32_to_cpu(rinfo->dlease->duration_ms); 1215355da1ebSSage Weil if (!have_lease) 1216355da1ebSSage Weil dout("fill_trace no dentry lease or dir cap\n"); 1217355da1ebSSage Weil 1218355da1ebSSage Weil /* rename? */ 1219355da1ebSSage Weil if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { 12200a8a70f9SYan, Zheng struct inode *olddir = req->r_old_dentry_dir; 12210a8a70f9SYan, Zheng BUG_ON(!olddir); 12220a8a70f9SYan, Zheng 1223a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1224355da1ebSSage Weil req->r_old_dentry, 1225a455589fSAl Viro req->r_old_dentry, 1226a455589fSAl Viro dn, dn); 1227355da1ebSSage Weil dout("fill_trace doing d_move %p -> %p\n", 1228355da1ebSSage Weil req->r_old_dentry, dn); 1229c10f5e12SSage Weil 1230fdd4e158SYan, Zheng /* d_move screws up sibling dentries' offsets */ 1231fdd4e158SYan, Zheng ceph_dir_clear_ordered(dir); 1232fdd4e158SYan, Zheng ceph_dir_clear_ordered(olddir); 1233fdd4e158SYan, Zheng 1234355da1ebSSage Weil d_move(req->r_old_dentry, dn); 1235a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1236355da1ebSSage Weil req->r_old_dentry, 1237a455589fSAl Viro req->r_old_dentry, 1238a455589fSAl Viro dn, dn); 123981a6cf2dSSage Weil 1240c4a29f26SSage Weil /* ensure target dentry is invalidated, despite 1241c4a29f26SSage Weil rehashing bug in vfs_rename_dir */ 124281a6cf2dSSage Weil ceph_invalidate_dentry_lease(dn); 124381a6cf2dSSage Weil 124409adc80cSSage Weil dout("dn %p gets new offset %lld\n", req->r_old_dentry, 12451cd3935bSSage Weil ceph_dentry(req->r_old_dentry)->offset); 124681a6cf2dSSage Weil 1247355da1ebSSage Weil dn = req->r_old_dentry; /* use old_dentry */ 1248355da1ebSSage Weil } 1249355da1ebSSage Weil 1250355da1ebSSage Weil /* null dentry? */ 1251355da1ebSSage Weil if (!rinfo->head->is_target) { 1252355da1ebSSage Weil dout("fill_trace null dentry\n"); 12532b0143b5SDavid Howells if (d_really_is_positive(dn)) { 125470db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 1255355da1ebSSage Weil dout("d_delete %p\n", dn); 1256355da1ebSSage Weil d_delete(dn); 1257355da1ebSSage Weil } else { 1258355da1ebSSage Weil if (have_lease && d_unhashed(dn)) 1259f8b31710SAl Viro d_add(dn, NULL); 1260355da1ebSSage Weil update_dentry_lease(dn, rinfo->dlease, 1261355da1ebSSage Weil session, 1262355da1ebSSage Weil req->r_request_started); 1263355da1ebSSage Weil } 1264355da1ebSSage Weil goto done; 1265355da1ebSSage Weil } 1266355da1ebSSage Weil 1267355da1ebSSage Weil /* attach proper inode */ 12682b0143b5SDavid Howells if (d_really_is_negative(dn)) { 126970db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 127086b58d13SYan, Zheng ihold(in); 1271f7380af0SAl Viro dn = splice_dentry(dn, in); 1272355da1ebSSage Weil if (IS_ERR(dn)) { 1273355da1ebSSage Weil err = PTR_ERR(dn); 1274355da1ebSSage Weil goto done; 1275355da1ebSSage Weil } 1276355da1ebSSage Weil req->r_dentry = dn; /* may have spliced */ 12772b0143b5SDavid Howells } else if (d_really_is_positive(dn) && d_inode(dn) != in) { 1278355da1ebSSage Weil dout(" %p links to %p %llx.%llx, not %llx.%llx\n", 12792b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn)), 128086b58d13SYan, Zheng ceph_vinop(in)); 1281200fd27cSYan, Zheng d_invalidate(dn); 1282355da1ebSSage Weil have_lease = false; 1283355da1ebSSage Weil } 1284355da1ebSSage Weil 1285355da1ebSSage Weil if (have_lease) 1286355da1ebSSage Weil update_dentry_lease(dn, rinfo->dlease, session, 1287355da1ebSSage Weil req->r_request_started); 1288355da1ebSSage Weil dout(" final dn %p\n", dn); 128986b58d13SYan, Zheng } else if (!req->r_aborted && 129086b58d13SYan, Zheng (req->r_op == CEPH_MDS_OP_LOOKUPSNAP || 129186b58d13SYan, Zheng req->r_op == CEPH_MDS_OP_MKSNAP)) { 1292355da1ebSSage Weil struct dentry *dn = req->r_dentry; 12930a8a70f9SYan, Zheng struct inode *dir = req->r_locked_dir; 1294355da1ebSSage Weil 1295355da1ebSSage Weil /* fill out a snapdir LOOKUPSNAP dentry */ 1296355da1ebSSage Weil BUG_ON(!dn); 12970a8a70f9SYan, Zheng BUG_ON(!dir); 12980a8a70f9SYan, Zheng BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); 1299355da1ebSSage Weil dout(" linking snapped dir %p to dn %p\n", in, dn); 130070db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 130186b58d13SYan, Zheng ihold(in); 1302f7380af0SAl Viro dn = splice_dentry(dn, in); 1303355da1ebSSage Weil if (IS_ERR(dn)) { 1304355da1ebSSage Weil err = PTR_ERR(dn); 1305355da1ebSSage Weil goto done; 1306355da1ebSSage Weil } 1307355da1ebSSage Weil req->r_dentry = dn; /* may have spliced */ 1308355da1ebSSage Weil } 1309355da1ebSSage Weil done: 1310355da1ebSSage Weil dout("fill_trace done err=%d\n", err); 1311355da1ebSSage Weil return err; 1312355da1ebSSage Weil } 1313355da1ebSSage Weil 1314355da1ebSSage Weil /* 1315355da1ebSSage Weil * Prepopulate our cache with readdir results, leases, etc. 1316355da1ebSSage Weil */ 131779f9f99aSSage Weil static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, 131879f9f99aSSage Weil struct ceph_mds_session *session) 131979f9f99aSSage Weil { 132079f9f99aSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 132179f9f99aSSage Weil int i, err = 0; 132279f9f99aSSage Weil 132379f9f99aSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 13242a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 132579f9f99aSSage Weil struct ceph_vino vino; 132679f9f99aSSage Weil struct inode *in; 132779f9f99aSSage Weil int rc; 132879f9f99aSSage Weil 13292a5beea3SYan, Zheng vino.ino = le64_to_cpu(rde->inode.in->ino); 13302a5beea3SYan, Zheng vino.snap = le64_to_cpu(rde->inode.in->snapid); 133179f9f99aSSage Weil 133279f9f99aSSage Weil in = ceph_get_inode(req->r_dentry->d_sb, vino); 133379f9f99aSSage Weil if (IS_ERR(in)) { 133479f9f99aSSage Weil err = PTR_ERR(in); 133579f9f99aSSage Weil dout("new_inode badness got %d\n", err); 133679f9f99aSSage Weil continue; 133779f9f99aSSage Weil } 13382a5beea3SYan, Zheng rc = fill_inode(in, NULL, &rde->inode, NULL, session, 133979f9f99aSSage Weil req->r_request_started, -1, 134079f9f99aSSage Weil &req->r_caps_reservation); 134179f9f99aSSage Weil if (rc < 0) { 134279f9f99aSSage Weil pr_err("fill_inode badness on %p got %d\n", in, rc); 134379f9f99aSSage Weil err = rc; 134479f9f99aSSage Weil } 1345209ae762SYan, Zheng iput(in); 134679f9f99aSSage Weil } 134779f9f99aSSage Weil 134879f9f99aSSage Weil return err; 134979f9f99aSSage Weil } 135079f9f99aSSage Weil 1351fdd4e158SYan, Zheng void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) 1352fdd4e158SYan, Zheng { 1353fdd4e158SYan, Zheng if (ctl->page) { 1354fdd4e158SYan, Zheng kunmap(ctl->page); 135509cbfeafSKirill A. Shutemov put_page(ctl->page); 1356fdd4e158SYan, Zheng ctl->page = NULL; 1357fdd4e158SYan, Zheng } 1358fdd4e158SYan, Zheng } 1359fdd4e158SYan, Zheng 1360fdd4e158SYan, Zheng static int fill_readdir_cache(struct inode *dir, struct dentry *dn, 1361fdd4e158SYan, Zheng struct ceph_readdir_cache_control *ctl, 1362fdd4e158SYan, Zheng struct ceph_mds_request *req) 1363fdd4e158SYan, Zheng { 1364fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(dir); 136509cbfeafSKirill A. Shutemov unsigned nsize = PAGE_SIZE / sizeof(struct dentry*); 1366fdd4e158SYan, Zheng unsigned idx = ctl->index % nsize; 1367fdd4e158SYan, Zheng pgoff_t pgoff = ctl->index / nsize; 1368fdd4e158SYan, Zheng 1369fdd4e158SYan, Zheng if (!ctl->page || pgoff != page_index(ctl->page)) { 1370fdd4e158SYan, Zheng ceph_readdir_cache_release(ctl); 1371af5e5eb5SYan, Zheng if (idx == 0) 1372fdd4e158SYan, Zheng ctl->page = grab_cache_page(&dir->i_data, pgoff); 1373af5e5eb5SYan, Zheng else 1374af5e5eb5SYan, Zheng ctl->page = find_lock_page(&dir->i_data, pgoff); 1375fdd4e158SYan, Zheng if (!ctl->page) { 1376fdd4e158SYan, Zheng ctl->index = -1; 1377af5e5eb5SYan, Zheng return idx == 0 ? -ENOMEM : 0; 1378fdd4e158SYan, Zheng } 1379fdd4e158SYan, Zheng /* reading/filling the cache are serialized by 1380fdd4e158SYan, Zheng * i_mutex, no need to use page lock */ 1381fdd4e158SYan, Zheng unlock_page(ctl->page); 1382fdd4e158SYan, Zheng ctl->dentries = kmap(ctl->page); 1383af5e5eb5SYan, Zheng if (idx == 0) 138409cbfeafSKirill A. Shutemov memset(ctl->dentries, 0, PAGE_SIZE); 1385fdd4e158SYan, Zheng } 1386fdd4e158SYan, Zheng 1387fdd4e158SYan, Zheng if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && 1388fdd4e158SYan, Zheng req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { 1389fdd4e158SYan, Zheng dout("readdir cache dn %p idx %d\n", dn, ctl->index); 1390fdd4e158SYan, Zheng ctl->dentries[idx] = dn; 1391fdd4e158SYan, Zheng ctl->index++; 1392fdd4e158SYan, Zheng } else { 1393fdd4e158SYan, Zheng dout("disable readdir cache\n"); 1394fdd4e158SYan, Zheng ctl->index = -1; 1395fdd4e158SYan, Zheng } 1396fdd4e158SYan, Zheng return 0; 1397fdd4e158SYan, Zheng } 1398fdd4e158SYan, Zheng 1399355da1ebSSage Weil int ceph_readdir_prepopulate(struct ceph_mds_request *req, 1400355da1ebSSage Weil struct ceph_mds_session *session) 1401355da1ebSSage Weil { 1402355da1ebSSage Weil struct dentry *parent = req->r_dentry; 1403f3c4ebe6SYan, Zheng struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); 1404355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1405355da1ebSSage Weil struct qstr dname; 1406355da1ebSSage Weil struct dentry *dn; 1407355da1ebSSage Weil struct inode *in; 1408315f2408SYan, Zheng int err = 0, skipped = 0, ret, i; 1409355da1ebSSage Weil struct inode *snapdir = NULL; 1410355da1ebSSage Weil struct ceph_mds_request_head *rhead = req->r_request->front.iov_base; 141181c6aea5SYan, Zheng u32 frag = le32_to_cpu(rhead->args.readdir.frag); 1412f3c4ebe6SYan, Zheng u32 last_hash = 0; 1413f3c4ebe6SYan, Zheng u32 fpos_offset; 1414fdd4e158SYan, Zheng struct ceph_readdir_cache_control cache_ctl = {}; 1415fdd4e158SYan, Zheng 1416fdd4e158SYan, Zheng if (req->r_aborted) 1417fdd4e158SYan, Zheng return readdir_prepopulate_inodes_only(req, session); 141881c6aea5SYan, Zheng 1419f3c4ebe6SYan, Zheng if (rinfo->hash_order && req->r_path2) { 1420f3c4ebe6SYan, Zheng last_hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 1421f3c4ebe6SYan, Zheng req->r_path2, strlen(req->r_path2)); 1422f3c4ebe6SYan, Zheng last_hash = ceph_frag_value(last_hash); 1423f3c4ebe6SYan, Zheng } 1424f3c4ebe6SYan, Zheng 142581c6aea5SYan, Zheng if (rinfo->dir_dir && 142681c6aea5SYan, Zheng le32_to_cpu(rinfo->dir_dir->frag) != frag) { 142781c6aea5SYan, Zheng dout("readdir_prepopulate got new frag %x -> %x\n", 142881c6aea5SYan, Zheng frag, le32_to_cpu(rinfo->dir_dir->frag)); 142981c6aea5SYan, Zheng frag = le32_to_cpu(rinfo->dir_dir->frag); 1430f3c4ebe6SYan, Zheng if (!rinfo->hash_order) 1431fdd4e158SYan, Zheng req->r_readdir_offset = 2; 143281c6aea5SYan, Zheng } 1433355da1ebSSage Weil 1434355da1ebSSage Weil if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { 14352b0143b5SDavid Howells snapdir = ceph_get_snapdir(d_inode(parent)); 1436355da1ebSSage Weil parent = d_find_alias(snapdir); 1437355da1ebSSage Weil dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", 1438355da1ebSSage Weil rinfo->dir_nr, parent); 1439355da1ebSSage Weil } else { 1440355da1ebSSage Weil dout("readdir_prepopulate %d items under dn %p\n", 1441355da1ebSSage Weil rinfo->dir_nr, parent); 1442355da1ebSSage Weil if (rinfo->dir_dir) 14432b0143b5SDavid Howells ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); 1444355da1ebSSage Weil } 1445355da1ebSSage Weil 1446fdd4e158SYan, Zheng if (ceph_frag_is_leftmost(frag) && req->r_readdir_offset == 2) { 1447fdd4e158SYan, Zheng /* note dir version at start of readdir so we can tell 1448fdd4e158SYan, Zheng * if any dentries get dropped */ 1449fdd4e158SYan, Zheng req->r_dir_release_cnt = atomic64_read(&ci->i_release_count); 1450fdd4e158SYan, Zheng req->r_dir_ordered_cnt = atomic64_read(&ci->i_ordered_count); 1451fdd4e158SYan, Zheng req->r_readdir_cache_idx = 0; 1452fdd4e158SYan, Zheng } 1453fdd4e158SYan, Zheng 1454fdd4e158SYan, Zheng cache_ctl.index = req->r_readdir_cache_idx; 1455f3c4ebe6SYan, Zheng fpos_offset = req->r_readdir_offset; 1456fdd4e158SYan, Zheng 145786b58d13SYan, Zheng /* FIXME: release caps/leases if error occurs */ 1458355da1ebSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 14592a5beea3SYan, Zheng struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; 1460355da1ebSSage Weil struct ceph_vino vino; 1461355da1ebSSage Weil 14622a5beea3SYan, Zheng dname.name = rde->name; 14632a5beea3SYan, Zheng dname.len = rde->name_len; 1464355da1ebSSage Weil dname.hash = full_name_hash(dname.name, dname.len); 1465355da1ebSSage Weil 14662a5beea3SYan, Zheng vino.ino = le64_to_cpu(rde->inode.in->ino); 14672a5beea3SYan, Zheng vino.snap = le64_to_cpu(rde->inode.in->snapid); 1468355da1ebSSage Weil 1469f3c4ebe6SYan, Zheng if (rinfo->hash_order) { 1470f3c4ebe6SYan, Zheng u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, 1471f3c4ebe6SYan, Zheng rde->name, rde->name_len); 1472f3c4ebe6SYan, Zheng hash = ceph_frag_value(hash); 1473f3c4ebe6SYan, Zheng if (hash != last_hash) 1474f3c4ebe6SYan, Zheng fpos_offset = 2; 1475f3c4ebe6SYan, Zheng last_hash = hash; 1476f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(hash, fpos_offset++, true); 1477f3c4ebe6SYan, Zheng } else { 1478f3c4ebe6SYan, Zheng rde->offset = ceph_make_fpos(frag, fpos_offset++, false); 1479f3c4ebe6SYan, Zheng } 1480f3c4ebe6SYan, Zheng 1481355da1ebSSage Weil retry_lookup: 1482355da1ebSSage Weil dn = d_lookup(parent, &dname); 1483355da1ebSSage Weil dout("d_lookup on parent=%p name=%.*s got %p\n", 1484355da1ebSSage Weil parent, dname.len, dname.name, dn); 1485355da1ebSSage Weil 1486355da1ebSSage Weil if (!dn) { 1487355da1ebSSage Weil dn = d_alloc(parent, &dname); 1488355da1ebSSage Weil dout("d_alloc %p '%.*s' = %p\n", parent, 1489355da1ebSSage Weil dname.len, dname.name, dn); 1490355da1ebSSage Weil if (dn == NULL) { 1491355da1ebSSage Weil dout("d_alloc badness\n"); 1492355da1ebSSage Weil err = -ENOMEM; 1493355da1ebSSage Weil goto out; 1494355da1ebSSage Weil } 149586b58d13SYan, Zheng ret = ceph_init_dentry(dn); 149686b58d13SYan, Zheng if (ret < 0) { 14978c696737SSage Weil dput(dn); 149886b58d13SYan, Zheng err = ret; 1499355da1ebSSage Weil goto out; 15008c696737SSage Weil } 15012b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 15022b0143b5SDavid Howells (ceph_ino(d_inode(dn)) != vino.ino || 15032b0143b5SDavid Howells ceph_snap(d_inode(dn)) != vino.snap)) { 1504355da1ebSSage Weil dout(" dn %p points to wrong inode %p\n", 15052b0143b5SDavid Howells dn, d_inode(dn)); 1506355da1ebSSage Weil d_delete(dn); 1507355da1ebSSage Weil dput(dn); 1508355da1ebSSage Weil goto retry_lookup; 1509355da1ebSSage Weil } 1510355da1ebSSage Weil 1511355da1ebSSage Weil /* inode */ 15122b0143b5SDavid Howells if (d_really_is_positive(dn)) { 15132b0143b5SDavid Howells in = d_inode(dn); 1514355da1ebSSage Weil } else { 1515355da1ebSSage Weil in = ceph_get_inode(parent->d_sb, vino); 1516ac1f12efSDan Carpenter if (IS_ERR(in)) { 1517355da1ebSSage Weil dout("new_inode badness\n"); 15182744c171SAl Viro d_drop(dn); 1519355da1ebSSage Weil dput(dn); 1520ac1f12efSDan Carpenter err = PTR_ERR(in); 1521355da1ebSSage Weil goto out; 1522355da1ebSSage Weil } 1523355da1ebSSage Weil } 1524355da1ebSSage Weil 15252a5beea3SYan, Zheng ret = fill_inode(in, NULL, &rde->inode, NULL, session, 1526355da1ebSSage Weil req->r_request_started, -1, 1527fdd4e158SYan, Zheng &req->r_caps_reservation); 1528fdd4e158SYan, Zheng if (ret < 0) { 1529355da1ebSSage Weil pr_err("fill_inode badness on %p\n", in); 15302b0143b5SDavid Howells if (d_really_is_negative(dn)) 153186b58d13SYan, Zheng iput(in); 153286b58d13SYan, Zheng d_drop(dn); 1533fdd4e158SYan, Zheng err = ret; 1534d69ed05aSSage Weil goto next_item; 1535355da1ebSSage Weil } 153686b58d13SYan, Zheng 15372b0143b5SDavid Howells if (d_really_is_negative(dn)) { 1538315f2408SYan, Zheng struct dentry *realdn; 1539315f2408SYan, Zheng 1540315f2408SYan, Zheng if (ceph_security_xattr_deadlock(in)) { 1541315f2408SYan, Zheng dout(" skip splicing dn %p to inode %p" 1542315f2408SYan, Zheng " (security xattr deadlock)\n", dn, in); 1543315f2408SYan, Zheng iput(in); 1544315f2408SYan, Zheng skipped++; 1545315f2408SYan, Zheng goto next_item; 1546315f2408SYan, Zheng } 1547315f2408SYan, Zheng 1548315f2408SYan, Zheng realdn = splice_dentry(dn, in); 15495cba372cSYan, Zheng if (IS_ERR(realdn)) { 15505cba372cSYan, Zheng err = PTR_ERR(realdn); 15515cba372cSYan, Zheng d_drop(dn); 155286b58d13SYan, Zheng dn = NULL; 155386b58d13SYan, Zheng goto next_item; 155486b58d13SYan, Zheng } 15555cba372cSYan, Zheng dn = realdn; 155686b58d13SYan, Zheng } 155786b58d13SYan, Zheng 1558f3c4ebe6SYan, Zheng ceph_dentry(dn)->offset = rde->offset; 155986b58d13SYan, Zheng 15602a5beea3SYan, Zheng update_dentry_lease(dn, rde->lease, req->r_session, 1561d69ed05aSSage Weil req->r_request_started); 1562fdd4e158SYan, Zheng 1563315f2408SYan, Zheng if (err == 0 && skipped == 0 && cache_ctl.index >= 0) { 1564fdd4e158SYan, Zheng ret = fill_readdir_cache(d_inode(parent), dn, 1565fdd4e158SYan, Zheng &cache_ctl, req); 1566fdd4e158SYan, Zheng if (ret < 0) 1567fdd4e158SYan, Zheng err = ret; 1568fdd4e158SYan, Zheng } 1569d69ed05aSSage Weil next_item: 1570d69ed05aSSage Weil if (dn) 1571355da1ebSSage Weil dput(dn); 1572355da1ebSSage Weil } 1573355da1ebSSage Weil out: 1574315f2408SYan, Zheng if (err == 0 && skipped == 0) { 1575fdd4e158SYan, Zheng req->r_did_prepopulate = true; 1576fdd4e158SYan, Zheng req->r_readdir_cache_idx = cache_ctl.index; 1577fdd4e158SYan, Zheng } 1578fdd4e158SYan, Zheng ceph_readdir_cache_release(&cache_ctl); 1579355da1ebSSage Weil if (snapdir) { 1580355da1ebSSage Weil iput(snapdir); 1581355da1ebSSage Weil dput(parent); 1582355da1ebSSage Weil } 1583355da1ebSSage Weil dout("readdir_prepopulate done\n"); 1584355da1ebSSage Weil return err; 1585355da1ebSSage Weil } 1586355da1ebSSage Weil 1587355da1ebSSage Weil int ceph_inode_set_size(struct inode *inode, loff_t size) 1588355da1ebSSage Weil { 1589355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1590355da1ebSSage Weil int ret = 0; 1591355da1ebSSage Weil 1592be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1593355da1ebSSage Weil dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); 159499c88e69SYan, Zheng i_size_write(inode, size); 1595355da1ebSSage Weil inode->i_blocks = (size + (1 << 9) - 1) >> 9; 1596355da1ebSSage Weil 1597355da1ebSSage Weil /* tell the MDS if we are approaching max_size */ 1598355da1ebSSage Weil if ((size << 1) >= ci->i_max_size && 1599355da1ebSSage Weil (ci->i_reported_size << 1) < ci->i_max_size) 1600355da1ebSSage Weil ret = 1; 1601355da1ebSSage Weil 1602be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1603355da1ebSSage Weil return ret; 1604355da1ebSSage Weil } 1605355da1ebSSage Weil 1606355da1ebSSage Weil /* 1607355da1ebSSage Weil * Write back inode data in a worker thread. (This can't be done 1608355da1ebSSage Weil * in the message handler context.) 1609355da1ebSSage Weil */ 16103c6f6b79SSage Weil void ceph_queue_writeback(struct inode *inode) 16113c6f6b79SSage Weil { 161215a2015fSSage Weil ihold(inode); 16133c6f6b79SSage Weil if (queue_work(ceph_inode_to_client(inode)->wb_wq, 16143c6f6b79SSage Weil &ceph_inode(inode)->i_wb_work)) { 16152c27c9a5SSage Weil dout("ceph_queue_writeback %p\n", inode); 16163c6f6b79SSage Weil } else { 16172c27c9a5SSage Weil dout("ceph_queue_writeback %p failed\n", inode); 161815a2015fSSage Weil iput(inode); 16193c6f6b79SSage Weil } 16203c6f6b79SSage Weil } 16213c6f6b79SSage Weil 16223c6f6b79SSage Weil static void ceph_writeback_work(struct work_struct *work) 1623355da1ebSSage Weil { 1624355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1625355da1ebSSage Weil i_wb_work); 1626355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1627355da1ebSSage Weil 1628355da1ebSSage Weil dout("writeback %p\n", inode); 1629355da1ebSSage Weil filemap_fdatawrite(&inode->i_data); 1630355da1ebSSage Weil iput(inode); 1631355da1ebSSage Weil } 1632355da1ebSSage Weil 1633355da1ebSSage Weil /* 16343c6f6b79SSage Weil * queue an async invalidation 16353c6f6b79SSage Weil */ 16363c6f6b79SSage Weil void ceph_queue_invalidate(struct inode *inode) 16373c6f6b79SSage Weil { 163815a2015fSSage Weil ihold(inode); 16393c6f6b79SSage Weil if (queue_work(ceph_inode_to_client(inode)->pg_inv_wq, 16403c6f6b79SSage Weil &ceph_inode(inode)->i_pg_inv_work)) { 16413c6f6b79SSage Weil dout("ceph_queue_invalidate %p\n", inode); 16423c6f6b79SSage Weil } else { 16433c6f6b79SSage Weil dout("ceph_queue_invalidate %p failed\n", inode); 164415a2015fSSage Weil iput(inode); 16453c6f6b79SSage Weil } 16463c6f6b79SSage Weil } 16473c6f6b79SSage Weil 16483c6f6b79SSage Weil /* 1649355da1ebSSage Weil * Invalidate inode pages in a worker thread. (This can't be done 1650355da1ebSSage Weil * in the message handler context.) 1651355da1ebSSage Weil */ 16523c6f6b79SSage Weil static void ceph_invalidate_work(struct work_struct *work) 1653355da1ebSSage Weil { 1654355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1655355da1ebSSage Weil i_pg_inv_work); 1656355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 16576c93df5dSYan, Zheng struct ceph_fs_client *fsc = ceph_inode_to_client(inode); 1658355da1ebSSage Weil u32 orig_gen; 1659355da1ebSSage Weil int check = 0; 1660355da1ebSSage Weil 1661b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 16626c93df5dSYan, Zheng 16636c93df5dSYan, Zheng if (ACCESS_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) { 16646c93df5dSYan, Zheng pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n", 16656c93df5dSYan, Zheng inode, ceph_ino(inode)); 16666c93df5dSYan, Zheng mapping_set_error(inode->i_mapping, -EIO); 16676c93df5dSYan, Zheng truncate_pagecache(inode, 0); 16686c93df5dSYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 16696c93df5dSYan, Zheng goto out; 16706c93df5dSYan, Zheng } 16716c93df5dSYan, Zheng 1672be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1673355da1ebSSage Weil dout("invalidate_pages %p gen %d revoking %d\n", inode, 1674355da1ebSSage Weil ci->i_rdcache_gen, ci->i_rdcache_revoking); 1675cd045cb4SSage Weil if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { 16769563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 16779563f88cSYan, Zheng check = 1; 1678be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1679b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1680355da1ebSSage Weil goto out; 1681355da1ebSSage Weil } 1682355da1ebSSage Weil orig_gen = ci->i_rdcache_gen; 1683be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1684355da1ebSSage Weil 16854e217b5dSYan, Zheng truncate_pagecache(inode, 0); 1686355da1ebSSage Weil 1687be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1688cd045cb4SSage Weil if (orig_gen == ci->i_rdcache_gen && 1689cd045cb4SSage Weil orig_gen == ci->i_rdcache_revoking) { 1690355da1ebSSage Weil dout("invalidate_pages %p gen %d successful\n", inode, 1691355da1ebSSage Weil ci->i_rdcache_gen); 1692cd045cb4SSage Weil ci->i_rdcache_revoking--; 1693355da1ebSSage Weil check = 1; 1694355da1ebSSage Weil } else { 1695cd045cb4SSage Weil dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", 1696cd045cb4SSage Weil inode, orig_gen, ci->i_rdcache_gen, 1697cd045cb4SSage Weil ci->i_rdcache_revoking); 16989563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 16999563f88cSYan, Zheng check = 1; 1700355da1ebSSage Weil } 1701be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1702b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 17039563f88cSYan, Zheng out: 1704355da1ebSSage Weil if (check) 1705355da1ebSSage Weil ceph_check_caps(ci, 0, NULL); 1706355da1ebSSage Weil iput(inode); 1707355da1ebSSage Weil } 1708355da1ebSSage Weil 1709355da1ebSSage Weil 1710355da1ebSSage Weil /* 17113f99969fSYan, Zheng * called by trunc_wq; 1712355da1ebSSage Weil * 1713355da1ebSSage Weil * We also truncate in a separate thread as well. 1714355da1ebSSage Weil */ 17153c6f6b79SSage Weil static void ceph_vmtruncate_work(struct work_struct *work) 1716355da1ebSSage Weil { 1717355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1718355da1ebSSage Weil i_vmtruncate_work); 1719355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1720355da1ebSSage Weil 1721355da1ebSSage Weil dout("vmtruncate_work %p\n", inode); 1722b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 1723355da1ebSSage Weil iput(inode); 1724355da1ebSSage Weil } 1725355da1ebSSage Weil 1726355da1ebSSage Weil /* 17273c6f6b79SSage Weil * Queue an async vmtruncate. If we fail to queue work, we will handle 17283c6f6b79SSage Weil * the truncation the next time we call __ceph_do_pending_vmtruncate. 17293c6f6b79SSage Weil */ 17303c6f6b79SSage Weil void ceph_queue_vmtruncate(struct inode *inode) 17313c6f6b79SSage Weil { 17323c6f6b79SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 17333c6f6b79SSage Weil 173415a2015fSSage Weil ihold(inode); 173599ccbd22SMilosz Tanski 1736640ef79dSCheng Renquan if (queue_work(ceph_sb_to_client(inode->i_sb)->trunc_wq, 17373c6f6b79SSage Weil &ci->i_vmtruncate_work)) { 17383c6f6b79SSage Weil dout("ceph_queue_vmtruncate %p\n", inode); 17393c6f6b79SSage Weil } else { 17403c6f6b79SSage Weil dout("ceph_queue_vmtruncate %p failed, pending=%d\n", 17413c6f6b79SSage Weil inode, ci->i_truncate_pending); 174215a2015fSSage Weil iput(inode); 17433c6f6b79SSage Weil } 17443c6f6b79SSage Weil } 17453c6f6b79SSage Weil 17463c6f6b79SSage Weil /* 1747355da1ebSSage Weil * Make sure any pending truncation is applied before doing anything 1748355da1ebSSage Weil * that may depend on it. 1749355da1ebSSage Weil */ 1750b415bf4fSYan, Zheng void __ceph_do_pending_vmtruncate(struct inode *inode) 1751355da1ebSSage Weil { 1752355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1753355da1ebSSage Weil u64 to; 1754a85f50b6SYan, Zheng int wrbuffer_refs, finish = 0; 1755355da1ebSSage Weil 1756b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1757355da1ebSSage Weil retry: 1758be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1759355da1ebSSage Weil if (ci->i_truncate_pending == 0) { 1760355da1ebSSage Weil dout("__do_pending_vmtruncate %p none pending\n", inode); 1761be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1762b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1763355da1ebSSage Weil return; 1764355da1ebSSage Weil } 1765355da1ebSSage Weil 1766355da1ebSSage Weil /* 1767355da1ebSSage Weil * make sure any dirty snapped pages are flushed before we 1768355da1ebSSage Weil * possibly truncate them.. so write AND block! 1769355da1ebSSage Weil */ 1770355da1ebSSage Weil if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { 1771355da1ebSSage Weil dout("__do_pending_vmtruncate %p flushing snaps first\n", 1772355da1ebSSage Weil inode); 1773be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1774355da1ebSSage Weil filemap_write_and_wait_range(&inode->i_data, 0, 1775355da1ebSSage Weil inode->i_sb->s_maxbytes); 1776355da1ebSSage Weil goto retry; 1777355da1ebSSage Weil } 1778355da1ebSSage Weil 1779b0d7c223SYan, Zheng /* there should be no reader or writer */ 1780b0d7c223SYan, Zheng WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); 1781b0d7c223SYan, Zheng 1782355da1ebSSage Weil to = ci->i_truncate_size; 1783355da1ebSSage Weil wrbuffer_refs = ci->i_wrbuffer_ref; 1784355da1ebSSage Weil dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, 1785355da1ebSSage Weil ci->i_truncate_pending, to); 1786be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1787355da1ebSSage Weil 17884e217b5dSYan, Zheng truncate_pagecache(inode, to); 1789355da1ebSSage Weil 1790be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1791a85f50b6SYan, Zheng if (to == ci->i_truncate_size) { 1792a85f50b6SYan, Zheng ci->i_truncate_pending = 0; 1793a85f50b6SYan, Zheng finish = 1; 1794a85f50b6SYan, Zheng } 1795be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1796a85f50b6SYan, Zheng if (!finish) 1797a85f50b6SYan, Zheng goto retry; 1798355da1ebSSage Weil 1799b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1800b0d7c223SYan, Zheng 1801355da1ebSSage Weil if (wrbuffer_refs == 0) 1802355da1ebSSage Weil ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL); 1803a85f50b6SYan, Zheng 180403066f23SYehuda Sadeh wake_up_all(&ci->i_cap_wq); 1805355da1ebSSage Weil } 1806355da1ebSSage Weil 1807355da1ebSSage Weil /* 1808355da1ebSSage Weil * symlinks 1809355da1ebSSage Weil */ 1810355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops = { 1811355da1ebSSage Weil .readlink = generic_readlink, 18126b255391SAl Viro .get_link = simple_get_link, 18130b932672SYan, Zheng .setattr = ceph_setattr, 18140b932672SYan, Zheng .getattr = ceph_getattr, 18150b932672SYan, Zheng .setxattr = ceph_setxattr, 18160b932672SYan, Zheng .getxattr = ceph_getxattr, 18170b932672SYan, Zheng .listxattr = ceph_listxattr, 18180b932672SYan, Zheng .removexattr = ceph_removexattr, 1819355da1ebSSage Weil }; 1820355da1ebSSage Weil 1821355da1ebSSage Weil /* 1822355da1ebSSage Weil * setattr 1823355da1ebSSage Weil */ 1824355da1ebSSage Weil int ceph_setattr(struct dentry *dentry, struct iattr *attr) 1825355da1ebSSage Weil { 18262b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 1827355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1828355da1ebSSage Weil const unsigned int ia_valid = attr->ia_valid; 1829355da1ebSSage Weil struct ceph_mds_request *req; 18303d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = ceph_sb_to_client(dentry->d_sb)->mdsc; 1831f66fd9f0SYan, Zheng struct ceph_cap_flush *prealloc_cf; 1832355da1ebSSage Weil int issued; 1833355da1ebSSage Weil int release = 0, dirtied = 0; 1834355da1ebSSage Weil int mask = 0; 1835355da1ebSSage Weil int err = 0; 1836fca65b4aSSage Weil int inode_dirty_flags = 0; 1837604d1b02SYan, Zheng bool lock_snap_rwsem = false; 1838355da1ebSSage Weil 1839355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 1840355da1ebSSage Weil return -EROFS; 1841355da1ebSSage Weil 1842355da1ebSSage Weil err = inode_change_ok(inode, attr); 1843355da1ebSSage Weil if (err != 0) 1844355da1ebSSage Weil return err; 1845355da1ebSSage Weil 1846f66fd9f0SYan, Zheng prealloc_cf = ceph_alloc_cap_flush(); 1847f66fd9f0SYan, Zheng if (!prealloc_cf) 1848f66fd9f0SYan, Zheng return -ENOMEM; 1849f66fd9f0SYan, Zheng 1850355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, 1851355da1ebSSage Weil USE_AUTH_MDS); 1852f66fd9f0SYan, Zheng if (IS_ERR(req)) { 1853f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 1854355da1ebSSage Weil return PTR_ERR(req); 1855f66fd9f0SYan, Zheng } 1856355da1ebSSage Weil 1857be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1858355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 1859604d1b02SYan, Zheng 1860604d1b02SYan, Zheng if (!ci->i_head_snapc && 1861604d1b02SYan, Zheng (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { 1862604d1b02SYan, Zheng lock_snap_rwsem = true; 1863604d1b02SYan, Zheng if (!down_read_trylock(&mdsc->snap_rwsem)) { 1864604d1b02SYan, Zheng spin_unlock(&ci->i_ceph_lock); 1865604d1b02SYan, Zheng down_read(&mdsc->snap_rwsem); 1866604d1b02SYan, Zheng spin_lock(&ci->i_ceph_lock); 1867604d1b02SYan, Zheng issued = __ceph_caps_issued(ci, NULL); 1868604d1b02SYan, Zheng } 1869604d1b02SYan, Zheng } 1870604d1b02SYan, Zheng 1871355da1ebSSage Weil dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); 1872355da1ebSSage Weil 1873355da1ebSSage Weil if (ia_valid & ATTR_UID) { 1874355da1ebSSage Weil dout("setattr %p uid %d -> %d\n", inode, 1875bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 1876bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 1877355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1878355da1ebSSage Weil inode->i_uid = attr->ia_uid; 1879355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1880355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1881ab871b90SEric W. Biederman !uid_eq(attr->ia_uid, inode->i_uid)) { 1882ab871b90SEric W. Biederman req->r_args.setattr.uid = cpu_to_le32( 1883ab871b90SEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 1884355da1ebSSage Weil mask |= CEPH_SETATTR_UID; 1885355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1886355da1ebSSage Weil } 1887355da1ebSSage Weil } 1888355da1ebSSage Weil if (ia_valid & ATTR_GID) { 1889355da1ebSSage Weil dout("setattr %p gid %d -> %d\n", inode, 1890bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid), 1891bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 1892355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1893355da1ebSSage Weil inode->i_gid = attr->ia_gid; 1894355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1895355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1896ab871b90SEric W. Biederman !gid_eq(attr->ia_gid, inode->i_gid)) { 1897ab871b90SEric W. Biederman req->r_args.setattr.gid = cpu_to_le32( 1898ab871b90SEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 1899355da1ebSSage Weil mask |= CEPH_SETATTR_GID; 1900355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1901355da1ebSSage Weil } 1902355da1ebSSage Weil } 1903355da1ebSSage Weil if (ia_valid & ATTR_MODE) { 1904355da1ebSSage Weil dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, 1905355da1ebSSage Weil attr->ia_mode); 1906355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1907355da1ebSSage Weil inode->i_mode = attr->ia_mode; 1908355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1909355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1910355da1ebSSage Weil attr->ia_mode != inode->i_mode) { 19117221fe4cSGuangliang Zhao inode->i_mode = attr->ia_mode; 1912355da1ebSSage Weil req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); 1913355da1ebSSage Weil mask |= CEPH_SETATTR_MODE; 1914355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1915355da1ebSSage Weil } 1916355da1ebSSage Weil } 1917355da1ebSSage Weil 1918355da1ebSSage Weil if (ia_valid & ATTR_ATIME) { 1919355da1ebSSage Weil dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode, 1920355da1ebSSage Weil inode->i_atime.tv_sec, inode->i_atime.tv_nsec, 1921355da1ebSSage Weil attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); 1922355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 1923355da1ebSSage Weil ci->i_time_warp_seq++; 1924355da1ebSSage Weil inode->i_atime = attr->ia_atime; 1925355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1926355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 1927355da1ebSSage Weil timespec_compare(&inode->i_atime, 1928355da1ebSSage Weil &attr->ia_atime) < 0) { 1929355da1ebSSage Weil inode->i_atime = attr->ia_atime; 1930355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 1931355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1932355da1ebSSage Weil !timespec_equal(&inode->i_atime, &attr->ia_atime)) { 1933355da1ebSSage Weil ceph_encode_timespec(&req->r_args.setattr.atime, 1934355da1ebSSage Weil &attr->ia_atime); 1935355da1ebSSage Weil mask |= CEPH_SETATTR_ATIME; 1936355da1ebSSage Weil release |= CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD | 1937355da1ebSSage Weil CEPH_CAP_FILE_WR; 1938355da1ebSSage Weil } 1939355da1ebSSage Weil } 1940355da1ebSSage Weil if (ia_valid & ATTR_MTIME) { 1941355da1ebSSage Weil dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode, 1942355da1ebSSage Weil inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 1943355da1ebSSage Weil attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); 1944355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 1945355da1ebSSage Weil ci->i_time_warp_seq++; 1946355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 1947355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1948355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 1949355da1ebSSage Weil timespec_compare(&inode->i_mtime, 1950355da1ebSSage Weil &attr->ia_mtime) < 0) { 1951355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 1952355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 1953355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1954355da1ebSSage Weil !timespec_equal(&inode->i_mtime, &attr->ia_mtime)) { 1955355da1ebSSage Weil ceph_encode_timespec(&req->r_args.setattr.mtime, 1956355da1ebSSage Weil &attr->ia_mtime); 1957355da1ebSSage Weil mask |= CEPH_SETATTR_MTIME; 1958355da1ebSSage Weil release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | 1959355da1ebSSage Weil CEPH_CAP_FILE_WR; 1960355da1ebSSage Weil } 1961355da1ebSSage Weil } 1962355da1ebSSage Weil if (ia_valid & ATTR_SIZE) { 1963355da1ebSSage Weil dout("setattr %p size %lld -> %lld\n", inode, 1964355da1ebSSage Weil inode->i_size, attr->ia_size); 1965355da1ebSSage Weil if ((issued & CEPH_CAP_FILE_EXCL) && 1966355da1ebSSage Weil attr->ia_size > inode->i_size) { 196799c88e69SYan, Zheng i_size_write(inode, attr->ia_size); 1968355da1ebSSage Weil inode->i_blocks = 1969355da1ebSSage Weil (attr->ia_size + (1 << 9) - 1) >> 9; 1970355da1ebSSage Weil inode->i_ctime = attr->ia_ctime; 1971355da1ebSSage Weil ci->i_reported_size = attr->ia_size; 1972355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1973355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1974355da1ebSSage Weil attr->ia_size != inode->i_size) { 1975355da1ebSSage Weil req->r_args.setattr.size = cpu_to_le64(attr->ia_size); 1976355da1ebSSage Weil req->r_args.setattr.old_size = 1977355da1ebSSage Weil cpu_to_le64(inode->i_size); 1978355da1ebSSage Weil mask |= CEPH_SETATTR_SIZE; 1979355da1ebSSage Weil release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | 1980355da1ebSSage Weil CEPH_CAP_FILE_WR; 1981355da1ebSSage Weil } 1982355da1ebSSage Weil } 1983355da1ebSSage Weil 1984355da1ebSSage Weil /* these do nothing */ 1985355da1ebSSage Weil if (ia_valid & ATTR_CTIME) { 1986355da1ebSSage Weil bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| 1987355da1ebSSage Weil ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; 1988355da1ebSSage Weil dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode, 1989355da1ebSSage Weil inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 1990355da1ebSSage Weil attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, 1991355da1ebSSage Weil only ? "ctime only" : "ignored"); 1992355da1ebSSage Weil inode->i_ctime = attr->ia_ctime; 1993355da1ebSSage Weil if (only) { 1994355da1ebSSage Weil /* 1995355da1ebSSage Weil * if kernel wants to dirty ctime but nothing else, 1996355da1ebSSage Weil * we need to choose a cap to dirty under, or do 1997355da1ebSSage Weil * a almost-no-op setattr 1998355da1ebSSage Weil */ 1999355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) 2000355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 2001355da1ebSSage Weil else if (issued & CEPH_CAP_FILE_EXCL) 2002355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 2003355da1ebSSage Weil else if (issued & CEPH_CAP_XATTR_EXCL) 2004355da1ebSSage Weil dirtied |= CEPH_CAP_XATTR_EXCL; 2005355da1ebSSage Weil else 2006355da1ebSSage Weil mask |= CEPH_SETATTR_CTIME; 2007355da1ebSSage Weil } 2008355da1ebSSage Weil } 2009355da1ebSSage Weil if (ia_valid & ATTR_FILE) 2010355da1ebSSage Weil dout("setattr %p ATTR_FILE ... hrm!\n", inode); 2011355da1ebSSage Weil 2012355da1ebSSage Weil if (dirtied) { 2013f66fd9f0SYan, Zheng inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, 2014f66fd9f0SYan, Zheng &prealloc_cf); 20158bbd4714SDeepa Dinamani inode->i_ctime = current_fs_time(inode->i_sb); 2016355da1ebSSage Weil } 2017355da1ebSSage Weil 2018355da1ebSSage Weil release &= issued; 2019be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 2020604d1b02SYan, Zheng if (lock_snap_rwsem) 2021604d1b02SYan, Zheng up_read(&mdsc->snap_rwsem); 2022355da1ebSSage Weil 2023fca65b4aSSage Weil if (inode_dirty_flags) 2024fca65b4aSSage Weil __mark_inode_dirty(inode, inode_dirty_flags); 2025fca65b4aSSage Weil 20267221fe4cSGuangliang Zhao if (ia_valid & ATTR_MODE) { 20274db658eaSLinus Torvalds err = posix_acl_chmod(inode, attr->ia_mode); 20287221fe4cSGuangliang Zhao if (err) 20297221fe4cSGuangliang Zhao goto out_put; 20307221fe4cSGuangliang Zhao } 20317221fe4cSGuangliang Zhao 2032355da1ebSSage Weil if (mask) { 203370b666c3SSage Weil req->r_inode = inode; 203470b666c3SSage Weil ihold(inode); 2035355da1ebSSage Weil req->r_inode_drop = release; 2036355da1ebSSage Weil req->r_args.setattr.mask = cpu_to_le32(mask); 2037355da1ebSSage Weil req->r_num_caps = 1; 2038752c8bdcSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 2039355da1ebSSage Weil } 2040355da1ebSSage Weil dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, 2041355da1ebSSage Weil ceph_cap_string(dirtied), mask); 2042355da1ebSSage Weil 2043355da1ebSSage Weil ceph_mdsc_put_request(req); 2044b0d7c223SYan, Zheng if (mask & CEPH_SETATTR_SIZE) 2045b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 2046f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 2047355da1ebSSage Weil return err; 20487221fe4cSGuangliang Zhao out_put: 2049355da1ebSSage Weil ceph_mdsc_put_request(req); 2050f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 2051355da1ebSSage Weil return err; 2052355da1ebSSage Weil } 2053355da1ebSSage Weil 2054355da1ebSSage Weil /* 2055355da1ebSSage Weil * Verify that we have a lease on the given mask. If not, 2056355da1ebSSage Weil * do a getattr against an mds. 2057355da1ebSSage Weil */ 205801deead0SYan, Zheng int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 205901deead0SYan, Zheng int mask, bool force) 2060355da1ebSSage Weil { 20613d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 20623d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 2063355da1ebSSage Weil struct ceph_mds_request *req; 2064355da1ebSSage Weil int err; 2065355da1ebSSage Weil 2066355da1ebSSage Weil if (ceph_snap(inode) == CEPH_SNAPDIR) { 2067355da1ebSSage Weil dout("do_getattr inode %p SNAPDIR\n", inode); 2068355da1ebSSage Weil return 0; 2069355da1ebSSage Weil } 2070355da1ebSSage Weil 207101deead0SYan, Zheng dout("do_getattr inode %p mask %s mode 0%o\n", 207201deead0SYan, Zheng inode, ceph_cap_string(mask), inode->i_mode); 2073508b32d8SYan, Zheng if (!force && ceph_caps_issued_mask(ceph_inode(inode), mask, 1)) 2074355da1ebSSage Weil return 0; 2075355da1ebSSage Weil 2076355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS); 2077355da1ebSSage Weil if (IS_ERR(req)) 2078355da1ebSSage Weil return PTR_ERR(req); 207970b666c3SSage Weil req->r_inode = inode; 208070b666c3SSage Weil ihold(inode); 2081355da1ebSSage Weil req->r_num_caps = 1; 2082355da1ebSSage Weil req->r_args.getattr.mask = cpu_to_le32(mask); 208301deead0SYan, Zheng req->r_locked_page = locked_page; 2084355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 208501deead0SYan, Zheng if (locked_page && err == 0) { 208601deead0SYan, Zheng u64 inline_version = req->r_reply_info.targeti.inline_version; 208701deead0SYan, Zheng if (inline_version == 0) { 208801deead0SYan, Zheng /* the reply is supposed to contain inline data */ 208901deead0SYan, Zheng err = -EINVAL; 209001deead0SYan, Zheng } else if (inline_version == CEPH_INLINE_NONE) { 209101deead0SYan, Zheng err = -ENODATA; 209201deead0SYan, Zheng } else { 209301deead0SYan, Zheng err = req->r_reply_info.targeti.inline_len; 209401deead0SYan, Zheng } 209501deead0SYan, Zheng } 2096355da1ebSSage Weil ceph_mdsc_put_request(req); 2097355da1ebSSage Weil dout("do_getattr result=%d\n", err); 2098355da1ebSSage Weil return err; 2099355da1ebSSage Weil } 2100355da1ebSSage Weil 2101355da1ebSSage Weil 2102355da1ebSSage Weil /* 2103355da1ebSSage Weil * Check inode permissions. We verify we have a valid value for 2104355da1ebSSage Weil * the AUTH cap, then call the generic handler. 2105355da1ebSSage Weil */ 210610556cb2SAl Viro int ceph_permission(struct inode *inode, int mask) 2107355da1ebSSage Weil { 2108b74c79e9SNick Piggin int err; 2109b74c79e9SNick Piggin 211010556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 2111b74c79e9SNick Piggin return -ECHILD; 2112b74c79e9SNick Piggin 2113508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); 2114355da1ebSSage Weil 2115355da1ebSSage Weil if (!err) 21162830ba7fSAl Viro err = generic_permission(inode, mask); 2117355da1ebSSage Weil return err; 2118355da1ebSSage Weil } 2119355da1ebSSage Weil 2120355da1ebSSage Weil /* 2121355da1ebSSage Weil * Get all attributes. Hopefully somedata we'll have a statlite() 2122355da1ebSSage Weil * and can limit the fields we require to be accurate. 2123355da1ebSSage Weil */ 2124355da1ebSSage Weil int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, 2125355da1ebSSage Weil struct kstat *stat) 2126355da1ebSSage Weil { 21272b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 2128232d4b01SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 2129355da1ebSSage Weil int err; 2130355da1ebSSage Weil 2131508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL, false); 2132355da1ebSSage Weil if (!err) { 2133355da1ebSSage Weil generic_fillattr(inode, stat); 2134ad1fee96SYehuda Sadeh stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino); 2135355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 2136355da1ebSSage Weil stat->dev = ceph_snap(inode); 2137355da1ebSSage Weil else 2138355da1ebSSage Weil stat->dev = 0; 2139232d4b01SSage Weil if (S_ISDIR(inode->i_mode)) { 21401c1266bbSYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), 21411c1266bbSYehuda Sadeh RBYTES)) 2142232d4b01SSage Weil stat->size = ci->i_rbytes; 21431c1266bbSYehuda Sadeh else 21441c1266bbSYehuda Sadeh stat->size = ci->i_files + ci->i_subdirs; 2145232d4b01SSage Weil stat->blocks = 0; 2146355da1ebSSage Weil stat->blksize = 65536; 2147355da1ebSSage Weil } 2148232d4b01SSage Weil } 2149355da1ebSSage Weil return err; 2150355da1ebSSage Weil } 2151