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> 13355da1ebSSage Weil 14355da1ebSSage Weil #include "super.h" 153d14c5d2SYehuda Sadeh #include "mds_client.h" 1699ccbd22SMilosz Tanski #include "cache.h" 173d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 18355da1ebSSage Weil 19355da1ebSSage Weil /* 20355da1ebSSage Weil * Ceph inode operations 21355da1ebSSage Weil * 22355da1ebSSage Weil * Implement basic inode helpers (get, alloc) and inode ops (getattr, 23355da1ebSSage Weil * setattr, etc.), xattr helpers, and helpers for assimilating 24355da1ebSSage Weil * metadata returned by the MDS into our cache. 25355da1ebSSage Weil * 26355da1ebSSage Weil * Also define helpers for doing asynchronous writeback, invalidation, 27355da1ebSSage Weil * and truncation for the benefit of those who can't afford to block 28355da1ebSSage Weil * (typically because they are in the message handler path). 29355da1ebSSage Weil */ 30355da1ebSSage Weil 31355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops; 32355da1ebSSage Weil 333c6f6b79SSage Weil static void ceph_invalidate_work(struct work_struct *work); 343c6f6b79SSage Weil static void ceph_writeback_work(struct work_struct *work); 353c6f6b79SSage Weil static void ceph_vmtruncate_work(struct work_struct *work); 36355da1ebSSage Weil 37355da1ebSSage Weil /* 38355da1ebSSage Weil * find or create an inode, given the ceph ino number 39355da1ebSSage Weil */ 40ad1fee96SYehuda Sadeh static int ceph_set_ino_cb(struct inode *inode, void *data) 41ad1fee96SYehuda Sadeh { 42ad1fee96SYehuda Sadeh ceph_inode(inode)->i_vino = *(struct ceph_vino *)data; 43ad1fee96SYehuda Sadeh inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data); 44ad1fee96SYehuda Sadeh return 0; 45ad1fee96SYehuda Sadeh } 46ad1fee96SYehuda Sadeh 47355da1ebSSage Weil struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) 48355da1ebSSage Weil { 49355da1ebSSage Weil struct inode *inode; 50355da1ebSSage Weil ino_t t = ceph_vino_to_ino(vino); 51355da1ebSSage Weil 52355da1ebSSage Weil inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino); 53355da1ebSSage Weil if (inode == NULL) 54355da1ebSSage Weil return ERR_PTR(-ENOMEM); 55355da1ebSSage Weil if (inode->i_state & I_NEW) { 56355da1ebSSage Weil dout("get_inode created new inode %p %llx.%llx ino %llx\n", 57355da1ebSSage Weil inode, ceph_vinop(inode), (u64)inode->i_ino); 58355da1ebSSage Weil unlock_new_inode(inode); 59355da1ebSSage Weil } 60355da1ebSSage Weil 61355da1ebSSage Weil dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino, 62355da1ebSSage Weil vino.snap, inode); 63355da1ebSSage Weil return inode; 64355da1ebSSage Weil } 65355da1ebSSage Weil 66355da1ebSSage Weil /* 67355da1ebSSage Weil * get/constuct snapdir inode for a given directory 68355da1ebSSage Weil */ 69355da1ebSSage Weil struct inode *ceph_get_snapdir(struct inode *parent) 70355da1ebSSage Weil { 71355da1ebSSage Weil struct ceph_vino vino = { 72355da1ebSSage Weil .ino = ceph_ino(parent), 73355da1ebSSage Weil .snap = CEPH_SNAPDIR, 74355da1ebSSage Weil }; 75355da1ebSSage Weil struct inode *inode = ceph_get_inode(parent->i_sb, vino); 76b377ff13SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 77355da1ebSSage Weil 78355da1ebSSage Weil BUG_ON(!S_ISDIR(parent->i_mode)); 79355da1ebSSage Weil if (IS_ERR(inode)) 807e34bc52SJulia Lawall return inode; 81355da1ebSSage Weil inode->i_mode = parent->i_mode; 82355da1ebSSage Weil inode->i_uid = parent->i_uid; 83355da1ebSSage Weil inode->i_gid = parent->i_gid; 8438c48b5fSYan, Zheng inode->i_op = &ceph_snapdir_iops; 8538c48b5fSYan, Zheng inode->i_fop = &ceph_snapdir_fops; 86b377ff13SSage Weil ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ 87b377ff13SSage Weil ci->i_rbytes = 0; 88355da1ebSSage Weil return inode; 89355da1ebSSage Weil } 90355da1ebSSage Weil 91355da1ebSSage Weil const struct inode_operations ceph_file_iops = { 92355da1ebSSage Weil .permission = ceph_permission, 93355da1ebSSage Weil .setattr = ceph_setattr, 94355da1ebSSage Weil .getattr = ceph_getattr, 95355da1ebSSage Weil .setxattr = ceph_setxattr, 96355da1ebSSage Weil .getxattr = ceph_getxattr, 97355da1ebSSage Weil .listxattr = ceph_listxattr, 98355da1ebSSage Weil .removexattr = ceph_removexattr, 997221fe4cSGuangliang Zhao .get_acl = ceph_get_acl, 10072466d0bSSage Weil .set_acl = ceph_set_acl, 101355da1ebSSage Weil }; 102355da1ebSSage Weil 103355da1ebSSage Weil 104355da1ebSSage Weil /* 105355da1ebSSage Weil * We use a 'frag tree' to keep track of the MDS's directory fragments 106355da1ebSSage Weil * for a given inode (usually there is just a single fragment). We 107355da1ebSSage Weil * need to know when a child frag is delegated to a new MDS, or when 108355da1ebSSage Weil * it is flagged as replicated, so we can direct our requests 109355da1ebSSage Weil * accordingly. 110355da1ebSSage Weil */ 111355da1ebSSage Weil 112355da1ebSSage Weil /* 113355da1ebSSage Weil * find/create a frag in the tree 114355da1ebSSage Weil */ 115355da1ebSSage Weil static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, 116355da1ebSSage Weil u32 f) 117355da1ebSSage Weil { 118355da1ebSSage Weil struct rb_node **p; 119355da1ebSSage Weil struct rb_node *parent = NULL; 120355da1ebSSage Weil struct ceph_inode_frag *frag; 121355da1ebSSage Weil int c; 122355da1ebSSage Weil 123355da1ebSSage Weil p = &ci->i_fragtree.rb_node; 124355da1ebSSage Weil while (*p) { 125355da1ebSSage Weil parent = *p; 126355da1ebSSage Weil frag = rb_entry(parent, struct ceph_inode_frag, node); 127355da1ebSSage Weil c = ceph_frag_compare(f, frag->frag); 128355da1ebSSage Weil if (c < 0) 129355da1ebSSage Weil p = &(*p)->rb_left; 130355da1ebSSage Weil else if (c > 0) 131355da1ebSSage Weil p = &(*p)->rb_right; 132355da1ebSSage Weil else 133355da1ebSSage Weil return frag; 134355da1ebSSage Weil } 135355da1ebSSage Weil 136355da1ebSSage Weil frag = kmalloc(sizeof(*frag), GFP_NOFS); 137355da1ebSSage Weil if (!frag) { 138355da1ebSSage Weil pr_err("__get_or_create_frag ENOMEM on %p %llx.%llx " 139355da1ebSSage Weil "frag %x\n", &ci->vfs_inode, 140355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 141355da1ebSSage Weil return ERR_PTR(-ENOMEM); 142355da1ebSSage Weil } 143355da1ebSSage Weil frag->frag = f; 144355da1ebSSage Weil frag->split_by = 0; 145355da1ebSSage Weil frag->mds = -1; 146355da1ebSSage Weil frag->ndist = 0; 147355da1ebSSage Weil 148355da1ebSSage Weil rb_link_node(&frag->node, parent, p); 149355da1ebSSage Weil rb_insert_color(&frag->node, &ci->i_fragtree); 150355da1ebSSage Weil 151355da1ebSSage Weil dout("get_or_create_frag added %llx.%llx frag %x\n", 152355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 153355da1ebSSage Weil return frag; 154355da1ebSSage Weil } 155355da1ebSSage Weil 156355da1ebSSage Weil /* 157355da1ebSSage Weil * find a specific frag @f 158355da1ebSSage Weil */ 159355da1ebSSage Weil struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) 160355da1ebSSage Weil { 161355da1ebSSage Weil struct rb_node *n = ci->i_fragtree.rb_node; 162355da1ebSSage Weil 163355da1ebSSage Weil while (n) { 164355da1ebSSage Weil struct ceph_inode_frag *frag = 165355da1ebSSage Weil rb_entry(n, struct ceph_inode_frag, node); 166355da1ebSSage Weil int c = ceph_frag_compare(f, frag->frag); 167355da1ebSSage Weil if (c < 0) 168355da1ebSSage Weil n = n->rb_left; 169355da1ebSSage Weil else if (c > 0) 170355da1ebSSage Weil n = n->rb_right; 171355da1ebSSage Weil else 172355da1ebSSage Weil return frag; 173355da1ebSSage Weil } 174355da1ebSSage Weil return NULL; 175355da1ebSSage Weil } 176355da1ebSSage Weil 177355da1ebSSage Weil /* 178355da1ebSSage Weil * Choose frag containing the given value @v. If @pfrag is 179355da1ebSSage Weil * specified, copy the frag delegation info to the caller if 180355da1ebSSage Weil * it is present. 181355da1ebSSage Weil */ 1823e7fbe9cSYan, Zheng static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 1833e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 184355da1ebSSage Weil { 185355da1ebSSage Weil u32 t = ceph_frag_make(0, 0); 186355da1ebSSage Weil struct ceph_inode_frag *frag; 187355da1ebSSage Weil unsigned nway, i; 188355da1ebSSage Weil u32 n; 189355da1ebSSage Weil 190355da1ebSSage Weil if (found) 191355da1ebSSage Weil *found = 0; 192355da1ebSSage Weil 193355da1ebSSage Weil while (1) { 194355da1ebSSage Weil WARN_ON(!ceph_frag_contains_value(t, v)); 195355da1ebSSage Weil frag = __ceph_find_frag(ci, t); 196355da1ebSSage Weil if (!frag) 197355da1ebSSage Weil break; /* t is a leaf */ 198355da1ebSSage Weil if (frag->split_by == 0) { 199355da1ebSSage Weil if (pfrag) 200355da1ebSSage Weil memcpy(pfrag, frag, sizeof(*pfrag)); 201355da1ebSSage Weil if (found) 202355da1ebSSage Weil *found = 1; 203355da1ebSSage Weil break; 204355da1ebSSage Weil } 205355da1ebSSage Weil 206355da1ebSSage Weil /* choose child */ 207355da1ebSSage Weil nway = 1 << frag->split_by; 208355da1ebSSage Weil dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, 209355da1ebSSage Weil frag->split_by, nway); 210355da1ebSSage Weil for (i = 0; i < nway; i++) { 211355da1ebSSage Weil n = ceph_frag_make_child(t, frag->split_by, i); 212355da1ebSSage Weil if (ceph_frag_contains_value(n, v)) { 213355da1ebSSage Weil t = n; 214355da1ebSSage Weil break; 215355da1ebSSage Weil } 216355da1ebSSage Weil } 217355da1ebSSage Weil BUG_ON(i == nway); 218355da1ebSSage Weil } 219355da1ebSSage Weil dout("choose_frag(%x) = %x\n", v, t); 220355da1ebSSage Weil 221355da1ebSSage Weil return t; 222355da1ebSSage Weil } 223355da1ebSSage Weil 2243e7fbe9cSYan, Zheng u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2253e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 2263e7fbe9cSYan, Zheng { 2273e7fbe9cSYan, Zheng u32 ret; 2283e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 2293e7fbe9cSYan, Zheng ret = __ceph_choose_frag(ci, v, pfrag, found); 2303e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 2313e7fbe9cSYan, Zheng return ret; 2323e7fbe9cSYan, Zheng } 2333e7fbe9cSYan, Zheng 234355da1ebSSage Weil /* 235355da1ebSSage Weil * Process dirfrag (delegation) info from the mds. Include leaf 236355da1ebSSage Weil * fragment in tree ONLY if ndist > 0. Otherwise, only 237355da1ebSSage Weil * branches/splits are included in i_fragtree) 238355da1ebSSage Weil */ 239355da1ebSSage Weil static int ceph_fill_dirfrag(struct inode *inode, 240355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo) 241355da1ebSSage Weil { 242355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 243355da1ebSSage Weil struct ceph_inode_frag *frag; 244355da1ebSSage Weil u32 id = le32_to_cpu(dirinfo->frag); 245355da1ebSSage Weil int mds = le32_to_cpu(dirinfo->auth); 246355da1ebSSage Weil int ndist = le32_to_cpu(dirinfo->ndist); 2478d08503cSYan, Zheng int diri_auth = -1; 248355da1ebSSage Weil int i; 249355da1ebSSage Weil int err = 0; 250355da1ebSSage Weil 2518d08503cSYan, Zheng spin_lock(&ci->i_ceph_lock); 2528d08503cSYan, Zheng if (ci->i_auth_cap) 2538d08503cSYan, Zheng diri_auth = ci->i_auth_cap->mds; 2548d08503cSYan, Zheng spin_unlock(&ci->i_ceph_lock); 2558d08503cSYan, Zheng 256355da1ebSSage Weil mutex_lock(&ci->i_fragtree_mutex); 2578d08503cSYan, Zheng if (ndist == 0 && mds == diri_auth) { 258355da1ebSSage Weil /* no delegation info needed. */ 259355da1ebSSage Weil frag = __ceph_find_frag(ci, id); 260355da1ebSSage Weil if (!frag) 261355da1ebSSage Weil goto out; 262355da1ebSSage Weil if (frag->split_by == 0) { 263355da1ebSSage Weil /* tree leaf, remove */ 264355da1ebSSage Weil dout("fill_dirfrag removed %llx.%llx frag %x" 265355da1ebSSage Weil " (no ref)\n", ceph_vinop(inode), id); 266355da1ebSSage Weil rb_erase(&frag->node, &ci->i_fragtree); 267355da1ebSSage Weil kfree(frag); 268355da1ebSSage Weil } else { 269355da1ebSSage Weil /* tree branch, keep and clear */ 270355da1ebSSage Weil dout("fill_dirfrag cleared %llx.%llx frag %x" 271355da1ebSSage Weil " referral\n", ceph_vinop(inode), id); 272355da1ebSSage Weil frag->mds = -1; 273355da1ebSSage Weil frag->ndist = 0; 274355da1ebSSage Weil } 275355da1ebSSage Weil goto out; 276355da1ebSSage Weil } 277355da1ebSSage Weil 278355da1ebSSage Weil 279355da1ebSSage Weil /* find/add this frag to store mds delegation info */ 280355da1ebSSage Weil frag = __get_or_create_frag(ci, id); 281355da1ebSSage Weil if (IS_ERR(frag)) { 282355da1ebSSage Weil /* this is not the end of the world; we can continue 283355da1ebSSage Weil with bad/inaccurate delegation info */ 284355da1ebSSage Weil pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", 285355da1ebSSage Weil ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); 286355da1ebSSage Weil err = -ENOMEM; 287355da1ebSSage Weil goto out; 288355da1ebSSage Weil } 289355da1ebSSage Weil 290355da1ebSSage Weil frag->mds = mds; 291355da1ebSSage Weil frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); 292355da1ebSSage Weil for (i = 0; i < frag->ndist; i++) 293355da1ebSSage Weil frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); 294355da1ebSSage Weil dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", 295355da1ebSSage Weil ceph_vinop(inode), frag->frag, frag->ndist); 296355da1ebSSage Weil 297355da1ebSSage Weil out: 298355da1ebSSage Weil mutex_unlock(&ci->i_fragtree_mutex); 299355da1ebSSage Weil return err; 300355da1ebSSage Weil } 301355da1ebSSage Weil 3023e7fbe9cSYan, Zheng static int ceph_fill_fragtree(struct inode *inode, 3033e7fbe9cSYan, Zheng struct ceph_frag_tree_head *fragtree, 3043e7fbe9cSYan, Zheng struct ceph_mds_reply_dirfrag *dirinfo) 3053e7fbe9cSYan, Zheng { 3063e7fbe9cSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 3073e7fbe9cSYan, Zheng struct ceph_inode_frag *frag; 3083e7fbe9cSYan, Zheng struct rb_node *rb_node; 3093e7fbe9cSYan, Zheng int i; 3103e7fbe9cSYan, Zheng u32 id, nsplits; 3113e7fbe9cSYan, Zheng bool update = false; 3123e7fbe9cSYan, Zheng 3133e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 3143e7fbe9cSYan, Zheng nsplits = le32_to_cpu(fragtree->nsplits); 3153e7fbe9cSYan, Zheng if (nsplits) { 3163e7fbe9cSYan, Zheng i = prandom_u32() % nsplits; 3173e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3183e7fbe9cSYan, Zheng if (!__ceph_find_frag(ci, id)) 3193e7fbe9cSYan, Zheng update = true; 3203e7fbe9cSYan, Zheng } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { 3213e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3223e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3233e7fbe9cSYan, Zheng if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) 3243e7fbe9cSYan, Zheng update = true; 3253e7fbe9cSYan, Zheng } 3263e7fbe9cSYan, Zheng if (!update && dirinfo) { 3273e7fbe9cSYan, Zheng id = le32_to_cpu(dirinfo->frag); 3283e7fbe9cSYan, Zheng if (id != __ceph_choose_frag(ci, id, NULL, NULL)) 3293e7fbe9cSYan, Zheng update = true; 3303e7fbe9cSYan, Zheng } 3313e7fbe9cSYan, Zheng if (!update) 3323e7fbe9cSYan, Zheng goto out_unlock; 3333e7fbe9cSYan, Zheng 3343e7fbe9cSYan, Zheng dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); 3353e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3363e7fbe9cSYan, Zheng for (i = 0; i < nsplits; i++) { 3373e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3383e7fbe9cSYan, Zheng frag = NULL; 3393e7fbe9cSYan, Zheng while (rb_node) { 3403e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3413e7fbe9cSYan, Zheng if (ceph_frag_compare(frag->frag, id) >= 0) { 3423e7fbe9cSYan, Zheng if (frag->frag != id) 3433e7fbe9cSYan, Zheng frag = NULL; 3443e7fbe9cSYan, Zheng else 3453e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3463e7fbe9cSYan, Zheng break; 3473e7fbe9cSYan, Zheng } 3483e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3493e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 3503e7fbe9cSYan, Zheng kfree(frag); 3513e7fbe9cSYan, Zheng frag = NULL; 3523e7fbe9cSYan, Zheng } 3533e7fbe9cSYan, Zheng if (!frag) { 3543e7fbe9cSYan, Zheng frag = __get_or_create_frag(ci, id); 3553e7fbe9cSYan, Zheng if (IS_ERR(frag)) 3563e7fbe9cSYan, Zheng continue; 3573e7fbe9cSYan, Zheng } 3583e7fbe9cSYan, Zheng frag->split_by = le32_to_cpu(fragtree->splits[i].by); 3593e7fbe9cSYan, Zheng dout(" frag %x split by %d\n", frag->frag, frag->split_by); 3603e7fbe9cSYan, Zheng } 3613e7fbe9cSYan, Zheng while (rb_node) { 3623e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3633e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3643e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 3653e7fbe9cSYan, Zheng kfree(frag); 3663e7fbe9cSYan, Zheng } 3673e7fbe9cSYan, Zheng out_unlock: 3683e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 3693e7fbe9cSYan, Zheng return 0; 3703e7fbe9cSYan, Zheng } 371355da1ebSSage Weil 372355da1ebSSage Weil /* 373355da1ebSSage Weil * initialize a newly allocated inode. 374355da1ebSSage Weil */ 375355da1ebSSage Weil struct inode *ceph_alloc_inode(struct super_block *sb) 376355da1ebSSage Weil { 377355da1ebSSage Weil struct ceph_inode_info *ci; 378355da1ebSSage Weil int i; 379355da1ebSSage Weil 380355da1ebSSage Weil ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); 381355da1ebSSage Weil if (!ci) 382355da1ebSSage Weil return NULL; 383355da1ebSSage Weil 384355da1ebSSage Weil dout("alloc_inode %p\n", &ci->vfs_inode); 385355da1ebSSage Weil 386be655596SSage Weil spin_lock_init(&ci->i_ceph_lock); 387be655596SSage Weil 388355da1ebSSage Weil ci->i_version = 0; 38931c542a1SYan, Zheng ci->i_inline_version = 0; 390355da1ebSSage Weil ci->i_time_warp_seq = 0; 391355da1ebSSage Weil ci->i_ceph_flags = 0; 392fdd4e158SYan, Zheng atomic64_set(&ci->i_ordered_count, 1); 393fdd4e158SYan, Zheng atomic64_set(&ci->i_release_count, 1); 394fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[0], 0); 395fdd4e158SYan, Zheng atomic64_set(&ci->i_complete_seq[1], 0); 396355da1ebSSage Weil ci->i_symlink = NULL; 397355da1ebSSage Weil 3986c0f3af7SSage Weil memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); 3996c0f3af7SSage Weil 400355da1ebSSage Weil ci->i_fragtree = RB_ROOT; 401355da1ebSSage Weil mutex_init(&ci->i_fragtree_mutex); 402355da1ebSSage Weil 403355da1ebSSage Weil ci->i_xattrs.blob = NULL; 404355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 405355da1ebSSage Weil ci->i_xattrs.dirty = false; 406355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 407355da1ebSSage Weil ci->i_xattrs.count = 0; 408355da1ebSSage Weil ci->i_xattrs.names_size = 0; 409355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 410355da1ebSSage Weil ci->i_xattrs.version = 0; 411355da1ebSSage Weil ci->i_xattrs.index_version = 0; 412355da1ebSSage Weil 413355da1ebSSage Weil ci->i_caps = RB_ROOT; 414355da1ebSSage Weil ci->i_auth_cap = NULL; 415355da1ebSSage Weil ci->i_dirty_caps = 0; 416355da1ebSSage Weil ci->i_flushing_caps = 0; 417355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_dirty_item); 418355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_flushing_item); 419f66fd9f0SYan, Zheng ci->i_prealloc_cap_flush = NULL; 420553adfd9SYan, Zheng ci->i_cap_flush_tree = RB_ROOT; 421355da1ebSSage Weil init_waitqueue_head(&ci->i_cap_wq); 422355da1ebSSage Weil ci->i_hold_caps_min = 0; 423355da1ebSSage Weil ci->i_hold_caps_max = 0; 424355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_delay_list); 425355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_snaps); 426355da1ebSSage Weil ci->i_head_snapc = NULL; 427355da1ebSSage Weil ci->i_snap_caps = 0; 428355da1ebSSage Weil 429355da1ebSSage Weil for (i = 0; i < CEPH_FILE_MODE_NUM; i++) 430355da1ebSSage Weil ci->i_nr_by_mode[i] = 0; 431355da1ebSSage Weil 432b0d7c223SYan, Zheng mutex_init(&ci->i_truncate_mutex); 433355da1ebSSage Weil ci->i_truncate_seq = 0; 434355da1ebSSage Weil ci->i_truncate_size = 0; 435355da1ebSSage Weil ci->i_truncate_pending = 0; 436355da1ebSSage Weil 437355da1ebSSage Weil ci->i_max_size = 0; 438355da1ebSSage Weil ci->i_reported_size = 0; 439355da1ebSSage Weil ci->i_wanted_max_size = 0; 440355da1ebSSage Weil ci->i_requested_max_size = 0; 441355da1ebSSage Weil 442355da1ebSSage Weil ci->i_pin_ref = 0; 443355da1ebSSage Weil ci->i_rd_ref = 0; 444355da1ebSSage Weil ci->i_rdcache_ref = 0; 445355da1ebSSage Weil ci->i_wr_ref = 0; 446d3d0720dSHenry C Chang ci->i_wb_ref = 0; 447355da1ebSSage Weil ci->i_wrbuffer_ref = 0; 448355da1ebSSage Weil ci->i_wrbuffer_ref_head = 0; 449355da1ebSSage Weil ci->i_shared_gen = 0; 450355da1ebSSage Weil ci->i_rdcache_gen = 0; 451355da1ebSSage Weil ci->i_rdcache_revoking = 0; 452355da1ebSSage Weil 453355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_writes); 454355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_dirops); 45568cd5b4bSYan, Zheng INIT_LIST_HEAD(&ci->i_unsafe_iops); 456355da1ebSSage Weil spin_lock_init(&ci->i_unsafe_lock); 457355da1ebSSage Weil 458355da1ebSSage Weil ci->i_snap_realm = NULL; 459355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_realm_item); 460355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_flush_item); 461355da1ebSSage Weil 4623c6f6b79SSage Weil INIT_WORK(&ci->i_wb_work, ceph_writeback_work); 4633c6f6b79SSage Weil INIT_WORK(&ci->i_pg_inv_work, ceph_invalidate_work); 464355da1ebSSage Weil 465355da1ebSSage Weil INIT_WORK(&ci->i_vmtruncate_work, ceph_vmtruncate_work); 466355da1ebSSage Weil 46799ccbd22SMilosz Tanski ceph_fscache_inode_init(ci); 46899ccbd22SMilosz Tanski 469355da1ebSSage Weil return &ci->vfs_inode; 470355da1ebSSage Weil } 471355da1ebSSage Weil 472fa0d7e3dSNick Piggin static void ceph_i_callback(struct rcu_head *head) 473fa0d7e3dSNick Piggin { 474fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 475fa0d7e3dSNick Piggin struct ceph_inode_info *ci = ceph_inode(inode); 476fa0d7e3dSNick Piggin 477fa0d7e3dSNick Piggin kmem_cache_free(ceph_inode_cachep, ci); 478fa0d7e3dSNick Piggin } 479fa0d7e3dSNick Piggin 480355da1ebSSage Weil void ceph_destroy_inode(struct inode *inode) 481355da1ebSSage Weil { 482355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 483355da1ebSSage Weil struct ceph_inode_frag *frag; 484355da1ebSSage Weil struct rb_node *n; 485355da1ebSSage Weil 486355da1ebSSage Weil dout("destroy_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); 487355da1ebSSage Weil 48899ccbd22SMilosz Tanski ceph_fscache_unregister_inode_cookie(ci); 48999ccbd22SMilosz Tanski 490355da1ebSSage Weil ceph_queue_caps_release(inode); 491355da1ebSSage Weil 4928b218b8aSSage Weil /* 4938b218b8aSSage Weil * we may still have a snap_realm reference if there are stray 494d9df2783SYan, Zheng * caps in i_snap_caps. 4958b218b8aSSage Weil */ 4968b218b8aSSage Weil if (ci->i_snap_realm) { 4978b218b8aSSage Weil struct ceph_mds_client *mdsc = 4983d14c5d2SYehuda Sadeh ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; 4998b218b8aSSage Weil struct ceph_snap_realm *realm = ci->i_snap_realm; 5008b218b8aSSage Weil 5018b218b8aSSage Weil dout(" dropping residual ref to snap realm %p\n", realm); 5028b218b8aSSage Weil spin_lock(&realm->inodes_with_caps_lock); 5038b218b8aSSage Weil list_del_init(&ci->i_snap_realm_item); 5048b218b8aSSage Weil spin_unlock(&realm->inodes_with_caps_lock); 5058b218b8aSSage Weil ceph_put_snap_realm(mdsc, realm); 5068b218b8aSSage Weil } 5078b218b8aSSage Weil 508355da1ebSSage Weil kfree(ci->i_symlink); 509355da1ebSSage Weil while ((n = rb_first(&ci->i_fragtree)) != NULL) { 510355da1ebSSage Weil frag = rb_entry(n, struct ceph_inode_frag, node); 511355da1ebSSage Weil rb_erase(n, &ci->i_fragtree); 512355da1ebSSage Weil kfree(frag); 513355da1ebSSage Weil } 514355da1ebSSage Weil 515355da1ebSSage Weil __ceph_destroy_xattrs(ci); 516b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 517355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 518b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 519355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 520355da1ebSSage Weil 521fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, ceph_i_callback); 522355da1ebSSage Weil } 523355da1ebSSage Weil 5249f12bd11SYan, Zheng int ceph_drop_inode(struct inode *inode) 5259f12bd11SYan, Zheng { 5269f12bd11SYan, Zheng /* 5279f12bd11SYan, Zheng * Positve dentry and corresponding inode are always accompanied 5289f12bd11SYan, Zheng * in MDS reply. So no need to keep inode in the cache after 5299f12bd11SYan, Zheng * dropping all its aliases. 5309f12bd11SYan, Zheng */ 5319f12bd11SYan, Zheng return 1; 5329f12bd11SYan, Zheng } 5339f12bd11SYan, Zheng 534355da1ebSSage Weil /* 535355da1ebSSage Weil * Helpers to fill in size, ctime, mtime, and atime. We have to be 536355da1ebSSage Weil * careful because either the client or MDS may have more up to date 537355da1ebSSage Weil * info, depending on which capabilities are held, and whether 538355da1ebSSage Weil * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime 539355da1ebSSage Weil * and size are monotonically increasing, except when utimes() or 540355da1ebSSage Weil * truncate() increments the corresponding _seq values.) 541355da1ebSSage Weil */ 542355da1ebSSage Weil int ceph_fill_file_size(struct inode *inode, int issued, 543355da1ebSSage Weil u32 truncate_seq, u64 truncate_size, u64 size) 544355da1ebSSage Weil { 545355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 546355da1ebSSage Weil int queue_trunc = 0; 547355da1ebSSage Weil 548355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || 549355da1ebSSage Weil (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { 550355da1ebSSage Weil dout("size %lld -> %llu\n", inode->i_size, size); 551355da1ebSSage Weil inode->i_size = size; 552355da1ebSSage Weil inode->i_blocks = (size + (1<<9) - 1) >> 9; 553355da1ebSSage Weil ci->i_reported_size = size; 554355da1ebSSage Weil if (truncate_seq != ci->i_truncate_seq) { 555355da1ebSSage Weil dout("truncate_seq %u -> %u\n", 556355da1ebSSage Weil ci->i_truncate_seq, truncate_seq); 557355da1ebSSage Weil ci->i_truncate_seq = truncate_seq; 558b0d7c223SYan, Zheng 559b0d7c223SYan, Zheng /* the MDS should have revoked these caps */ 560b0d7c223SYan, Zheng WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | 561b0d7c223SYan, Zheng CEPH_CAP_FILE_RD | 562b0d7c223SYan, Zheng CEPH_CAP_FILE_WR | 563b0d7c223SYan, Zheng CEPH_CAP_FILE_LAZYIO)); 5643d497d85SYehuda Sadeh /* 5653d497d85SYehuda Sadeh * If we hold relevant caps, or in the case where we're 5663d497d85SYehuda Sadeh * not the only client referencing this file and we 5673d497d85SYehuda Sadeh * don't hold those caps, then we need to check whether 5683d497d85SYehuda Sadeh * the file is either opened or mmaped 5693d497d85SYehuda Sadeh */ 570b0d7c223SYan, Zheng if ((issued & (CEPH_CAP_FILE_CACHE| 571b0d7c223SYan, Zheng CEPH_CAP_FILE_BUFFER)) || 5723d497d85SYehuda Sadeh mapping_mapped(inode->i_mapping) || 5733d497d85SYehuda Sadeh __ceph_caps_file_wanted(ci)) { 574355da1ebSSage Weil ci->i_truncate_pending++; 575355da1ebSSage Weil queue_trunc = 1; 576355da1ebSSage Weil } 577355da1ebSSage Weil } 578355da1ebSSage Weil } 579355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && 580355da1ebSSage Weil ci->i_truncate_size != truncate_size) { 581355da1ebSSage Weil dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, 582355da1ebSSage Weil truncate_size); 583355da1ebSSage Weil ci->i_truncate_size = truncate_size; 584355da1ebSSage Weil } 58599ccbd22SMilosz Tanski 58699ccbd22SMilosz Tanski if (queue_trunc) 58799ccbd22SMilosz Tanski ceph_fscache_invalidate(inode); 58899ccbd22SMilosz Tanski 589355da1ebSSage Weil return queue_trunc; 590355da1ebSSage Weil } 591355da1ebSSage Weil 592355da1ebSSage Weil void ceph_fill_file_time(struct inode *inode, int issued, 593355da1ebSSage Weil u64 time_warp_seq, struct timespec *ctime, 594355da1ebSSage Weil struct timespec *mtime, struct timespec *atime) 595355da1ebSSage Weil { 596355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 597355da1ebSSage Weil int warn = 0; 598355da1ebSSage Weil 599355da1ebSSage Weil if (issued & (CEPH_CAP_FILE_EXCL| 600355da1ebSSage Weil CEPH_CAP_FILE_WR| 601d8672d64SSage Weil CEPH_CAP_FILE_BUFFER| 602d8672d64SSage Weil CEPH_CAP_AUTH_EXCL| 603d8672d64SSage Weil CEPH_CAP_XATTR_EXCL)) { 604355da1ebSSage Weil if (timespec_compare(ctime, &inode->i_ctime) > 0) { 605355da1ebSSage Weil dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n", 606355da1ebSSage Weil inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 607355da1ebSSage Weil ctime->tv_sec, ctime->tv_nsec); 608355da1ebSSage Weil inode->i_ctime = *ctime; 609355da1ebSSage Weil } 610355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { 611355da1ebSSage Weil /* the MDS did a utimes() */ 612355da1ebSSage Weil dout("mtime %ld.%09ld -> %ld.%09ld " 613355da1ebSSage Weil "tw %d -> %d\n", 614355da1ebSSage Weil inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 615355da1ebSSage Weil mtime->tv_sec, mtime->tv_nsec, 616355da1ebSSage Weil ci->i_time_warp_seq, (int)time_warp_seq); 617355da1ebSSage Weil 618355da1ebSSage Weil inode->i_mtime = *mtime; 619355da1ebSSage Weil inode->i_atime = *atime; 620355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 621355da1ebSSage Weil } else if (time_warp_seq == ci->i_time_warp_seq) { 622355da1ebSSage Weil /* nobody did utimes(); take the max */ 623355da1ebSSage Weil if (timespec_compare(mtime, &inode->i_mtime) > 0) { 624355da1ebSSage Weil dout("mtime %ld.%09ld -> %ld.%09ld inc\n", 625355da1ebSSage Weil inode->i_mtime.tv_sec, 626355da1ebSSage Weil inode->i_mtime.tv_nsec, 627355da1ebSSage Weil mtime->tv_sec, mtime->tv_nsec); 628355da1ebSSage Weil inode->i_mtime = *mtime; 629355da1ebSSage Weil } 630355da1ebSSage Weil if (timespec_compare(atime, &inode->i_atime) > 0) { 631355da1ebSSage Weil dout("atime %ld.%09ld -> %ld.%09ld inc\n", 632355da1ebSSage Weil inode->i_atime.tv_sec, 633355da1ebSSage Weil inode->i_atime.tv_nsec, 634355da1ebSSage Weil atime->tv_sec, atime->tv_nsec); 635355da1ebSSage Weil inode->i_atime = *atime; 636355da1ebSSage Weil } 637355da1ebSSage Weil } else if (issued & CEPH_CAP_FILE_EXCL) { 638355da1ebSSage Weil /* we did a utimes(); ignore mds values */ 639355da1ebSSage Weil } else { 640355da1ebSSage Weil warn = 1; 641355da1ebSSage Weil } 642355da1ebSSage Weil } else { 643d8672d64SSage Weil /* we have no write|excl caps; whatever the MDS says is true */ 644355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { 645355da1ebSSage Weil inode->i_ctime = *ctime; 646355da1ebSSage Weil inode->i_mtime = *mtime; 647355da1ebSSage Weil inode->i_atime = *atime; 648355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 649355da1ebSSage Weil } else { 650355da1ebSSage Weil warn = 1; 651355da1ebSSage Weil } 652355da1ebSSage Weil } 653355da1ebSSage Weil if (warn) /* time_warp_seq shouldn't go backwards */ 654355da1ebSSage Weil dout("%p mds time_warp_seq %llu < %u\n", 655355da1ebSSage Weil inode, time_warp_seq, ci->i_time_warp_seq); 656355da1ebSSage Weil } 657355da1ebSSage Weil 658355da1ebSSage Weil /* 659355da1ebSSage Weil * Populate an inode based on info from mds. May be called on new or 660355da1ebSSage Weil * existing inodes. 661355da1ebSSage Weil */ 66201deead0SYan, Zheng static int fill_inode(struct inode *inode, struct page *locked_page, 663355da1ebSSage Weil struct ceph_mds_reply_info_in *iinfo, 664355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo, 665355da1ebSSage Weil struct ceph_mds_session *session, 666355da1ebSSage Weil unsigned long ttl_from, int cap_fmode, 667355da1ebSSage Weil struct ceph_cap_reservation *caps_reservation) 668355da1ebSSage Weil { 669d9df2783SYan, Zheng struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; 670355da1ebSSage Weil struct ceph_mds_reply_inode *info = iinfo->in; 671355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 672f98a128aSYan, Zheng int issued = 0, implemented, new_issued; 673355da1ebSSage Weil struct timespec mtime, atime, ctime; 674355da1ebSSage Weil struct ceph_buffer *xattr_blob = NULL; 675d9df2783SYan, Zheng struct ceph_cap *new_cap = NULL; 676355da1ebSSage Weil int err = 0; 677d9df2783SYan, Zheng bool wake = false; 678f98a128aSYan, Zheng bool queue_trunc = false; 679f98a128aSYan, Zheng bool new_version = false; 68031c542a1SYan, Zheng bool fill_inline = false; 681355da1ebSSage Weil 682355da1ebSSage Weil dout("fill_inode %p ino %llx.%llx v %llu had %llu\n", 683355da1ebSSage Weil inode, ceph_vinop(inode), le64_to_cpu(info->version), 684355da1ebSSage Weil ci->i_version); 685355da1ebSSage Weil 686d9df2783SYan, Zheng /* prealloc new cap struct */ 687d9df2783SYan, Zheng if (info->cap.caps && ceph_snap(inode) == CEPH_NOSNAP) 688d9df2783SYan, Zheng new_cap = ceph_get_cap(mdsc, caps_reservation); 689d9df2783SYan, Zheng 690355da1ebSSage Weil /* 691355da1ebSSage Weil * prealloc xattr data, if it looks like we'll need it. only 692355da1ebSSage Weil * if len > 4 (meaning there are actually xattrs; the first 4 693355da1ebSSage Weil * bytes are the xattr count). 694355da1ebSSage Weil */ 695355da1ebSSage Weil if (iinfo->xattr_len > 4) { 696b6c1d5b8SSage Weil xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); 697355da1ebSSage Weil if (!xattr_blob) 698355da1ebSSage Weil pr_err("fill_inode ENOMEM xattr blob %d bytes\n", 699355da1ebSSage Weil iinfo->xattr_len); 700355da1ebSSage Weil } 701355da1ebSSage Weil 702be655596SSage Weil spin_lock(&ci->i_ceph_lock); 703355da1ebSSage Weil 704355da1ebSSage Weil /* 705355da1ebSSage Weil * provided version will be odd if inode value is projected, 7068bd59e01SSage Weil * even if stable. skip the update if we have newer stable 7078bd59e01SSage Weil * info (ours>=theirs, e.g. due to racing mds replies), unless 7088bd59e01SSage Weil * we are getting projected (unstable) info (in which case the 7098bd59e01SSage Weil * version is odd, and we want ours>theirs). 7108bd59e01SSage Weil * us them 7118bd59e01SSage Weil * 2 2 skip 7128bd59e01SSage Weil * 3 2 skip 7138bd59e01SSage Weil * 3 3 update 714355da1ebSSage Weil */ 715f98a128aSYan, Zheng if (ci->i_version == 0 || 716f98a128aSYan, Zheng ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 717f98a128aSYan, Zheng le64_to_cpu(info->version) > (ci->i_version & ~1))) 718f98a128aSYan, Zheng new_version = true; 719355da1ebSSage Weil 720355da1ebSSage Weil issued = __ceph_caps_issued(ci, &implemented); 721355da1ebSSage Weil issued |= implemented | __ceph_caps_dirty(ci); 722f98a128aSYan, Zheng new_issued = ~issued & le32_to_cpu(info->cap.caps); 723355da1ebSSage Weil 724355da1ebSSage Weil /* update inode */ 725355da1ebSSage Weil ci->i_version = le64_to_cpu(info->version); 726355da1ebSSage Weil inode->i_version++; 727355da1ebSSage Weil inode->i_rdev = le32_to_cpu(info->rdev); 728f98a128aSYan, Zheng inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; 729355da1ebSSage Weil 730f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && 731f98a128aSYan, Zheng (issued & CEPH_CAP_AUTH_EXCL) == 0) { 732355da1ebSSage Weil inode->i_mode = le32_to_cpu(info->mode); 733ab871b90SEric W. Biederman inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); 734ab871b90SEric W. Biederman inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); 735355da1ebSSage Weil dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, 736bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 737bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid)); 738355da1ebSSage Weil } 739355da1ebSSage Weil 740f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && 741f98a128aSYan, Zheng (issued & CEPH_CAP_LINK_EXCL) == 0) 742bfe86848SMiklos Szeredi set_nlink(inode, le32_to_cpu(info->nlink)); 743355da1ebSSage Weil 744f98a128aSYan, Zheng if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { 745355da1ebSSage Weil /* be careful with mtime, atime, size */ 746355da1ebSSage Weil ceph_decode_timespec(&atime, &info->atime); 747355da1ebSSage Weil ceph_decode_timespec(&mtime, &info->mtime); 748355da1ebSSage Weil ceph_decode_timespec(&ctime, &info->ctime); 749f98a128aSYan, Zheng ceph_fill_file_time(inode, issued, 750f98a128aSYan, Zheng le32_to_cpu(info->time_warp_seq), 751f98a128aSYan, Zheng &ctime, &mtime, &atime); 752f98a128aSYan, Zheng } 753f98a128aSYan, Zheng 754f98a128aSYan, Zheng if (new_version || 755f98a128aSYan, Zheng (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { 75610183a69SYan, Zheng if (ci->i_layout.fl_pg_pool != info->layout.fl_pg_pool) 75710183a69SYan, Zheng ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; 758f98a128aSYan, Zheng ci->i_layout = info->layout; 75910183a69SYan, Zheng 760355da1ebSSage Weil queue_trunc = ceph_fill_file_size(inode, issued, 761355da1ebSSage Weil le32_to_cpu(info->truncate_seq), 762355da1ebSSage Weil le64_to_cpu(info->truncate_size), 763355da1ebSSage Weil le64_to_cpu(info->size)); 764f98a128aSYan, Zheng /* only update max_size on auth cap */ 765f98a128aSYan, Zheng if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 766f98a128aSYan, Zheng ci->i_max_size != le64_to_cpu(info->max_size)) { 767f98a128aSYan, Zheng dout("max_size %lld -> %llu\n", ci->i_max_size, 768f98a128aSYan, Zheng le64_to_cpu(info->max_size)); 769f98a128aSYan, Zheng ci->i_max_size = le64_to_cpu(info->max_size); 770f98a128aSYan, Zheng } 771f98a128aSYan, Zheng } 772355da1ebSSage Weil 773355da1ebSSage Weil /* xattrs */ 774355da1ebSSage Weil /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ 775508b32d8SYan, Zheng if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && 776355da1ebSSage Weil le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { 777355da1ebSSage Weil if (ci->i_xattrs.blob) 778355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 779355da1ebSSage Weil ci->i_xattrs.blob = xattr_blob; 780355da1ebSSage Weil if (xattr_blob) 781355da1ebSSage Weil memcpy(ci->i_xattrs.blob->vec.iov_base, 782355da1ebSSage Weil iinfo->xattr_data, iinfo->xattr_len); 783355da1ebSSage Weil ci->i_xattrs.version = le64_to_cpu(info->xattr_version); 7847221fe4cSGuangliang Zhao ceph_forget_all_cached_acls(inode); 785a6424e48SSage Weil xattr_blob = NULL; 786355da1ebSSage Weil } 787355da1ebSSage Weil 788355da1ebSSage Weil inode->i_mapping->a_ops = &ceph_aops; 789355da1ebSSage Weil 790355da1ebSSage Weil switch (inode->i_mode & S_IFMT) { 791355da1ebSSage Weil case S_IFIFO: 792355da1ebSSage Weil case S_IFBLK: 793355da1ebSSage Weil case S_IFCHR: 794355da1ebSSage Weil case S_IFSOCK: 795355da1ebSSage Weil init_special_inode(inode, inode->i_mode, inode->i_rdev); 796355da1ebSSage Weil inode->i_op = &ceph_file_iops; 797355da1ebSSage Weil break; 798355da1ebSSage Weil case S_IFREG: 799355da1ebSSage Weil inode->i_op = &ceph_file_iops; 800355da1ebSSage Weil inode->i_fop = &ceph_file_fops; 801355da1ebSSage Weil break; 802355da1ebSSage Weil case S_IFLNK: 803355da1ebSSage Weil inode->i_op = &ceph_symlink_iops; 804355da1ebSSage Weil if (!ci->i_symlink) { 805810339ecSXi Wang u32 symlen = iinfo->symlink_len; 806355da1ebSSage Weil char *sym; 807355da1ebSSage Weil 808be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 809355da1ebSSage Weil 810810339ecSXi Wang err = -EINVAL; 811810339ecSXi Wang if (WARN_ON(symlen != inode->i_size)) 812810339ecSXi Wang goto out; 813810339ecSXi Wang 814355da1ebSSage Weil err = -ENOMEM; 815810339ecSXi Wang sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); 816355da1ebSSage Weil if (!sym) 817355da1ebSSage Weil goto out; 818355da1ebSSage Weil 819be655596SSage Weil spin_lock(&ci->i_ceph_lock); 820355da1ebSSage Weil if (!ci->i_symlink) 821355da1ebSSage Weil ci->i_symlink = sym; 822355da1ebSSage Weil else 823355da1ebSSage Weil kfree(sym); /* lost a race */ 824355da1ebSSage Weil } 825ac194dccSAl Viro inode->i_link = ci->i_symlink; 826355da1ebSSage Weil break; 827355da1ebSSage Weil case S_IFDIR: 828355da1ebSSage Weil inode->i_op = &ceph_dir_iops; 829355da1ebSSage Weil inode->i_fop = &ceph_dir_fops; 830355da1ebSSage Weil 83114303d20SSage Weil ci->i_dir_layout = iinfo->dir_layout; 83214303d20SSage Weil 833355da1ebSSage Weil ci->i_files = le64_to_cpu(info->files); 834355da1ebSSage Weil ci->i_subdirs = le64_to_cpu(info->subdirs); 835355da1ebSSage Weil ci->i_rbytes = le64_to_cpu(info->rbytes); 836355da1ebSSage Weil ci->i_rfiles = le64_to_cpu(info->rfiles); 837355da1ebSSage Weil ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); 838355da1ebSSage Weil ceph_decode_timespec(&ci->i_rctime, &info->rctime); 839355da1ebSSage Weil break; 840355da1ebSSage Weil default: 841355da1ebSSage Weil pr_err("fill_inode %llx.%llx BAD mode 0%o\n", 842355da1ebSSage Weil ceph_vinop(inode), inode->i_mode); 843355da1ebSSage Weil } 844355da1ebSSage Weil 845355da1ebSSage Weil /* were we issued a capability? */ 846355da1ebSSage Weil if (info->cap.caps) { 847355da1ebSSage Weil if (ceph_snap(inode) == CEPH_NOSNAP) { 8482f92b3d0SYan, Zheng unsigned caps = le32_to_cpu(info->cap.caps); 849355da1ebSSage Weil ceph_add_cap(inode, session, 850355da1ebSSage Weil le64_to_cpu(info->cap.cap_id), 8512f92b3d0SYan, Zheng cap_fmode, caps, 852355da1ebSSage Weil le32_to_cpu(info->cap.wanted), 853355da1ebSSage Weil le32_to_cpu(info->cap.seq), 854355da1ebSSage Weil le32_to_cpu(info->cap.mseq), 855355da1ebSSage Weil le64_to_cpu(info->cap.realm), 856d9df2783SYan, Zheng info->cap.flags, &new_cap); 8572f92b3d0SYan, Zheng 8582f92b3d0SYan, Zheng /* set dir completion flag? */ 8592f92b3d0SYan, Zheng if (S_ISDIR(inode->i_mode) && 8602f92b3d0SYan, Zheng ci->i_files == 0 && ci->i_subdirs == 0 && 8612f92b3d0SYan, Zheng (caps & CEPH_CAP_FILE_SHARED) && 8622f92b3d0SYan, Zheng (issued & CEPH_CAP_FILE_EXCL) == 0 && 8632f92b3d0SYan, Zheng !__ceph_dir_is_complete(ci)) { 8642f92b3d0SYan, Zheng dout(" marking %p complete (empty)\n", inode); 865fdd4e158SYan, Zheng i_size_write(inode, 0); 8662f92b3d0SYan, Zheng __ceph_dir_set_complete(ci, 867fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count), 868fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count)); 8692f92b3d0SYan, Zheng } 8702f92b3d0SYan, Zheng 871d9df2783SYan, Zheng wake = true; 872355da1ebSSage Weil } else { 873355da1ebSSage Weil dout(" %p got snap_caps %s\n", inode, 874355da1ebSSage Weil ceph_cap_string(le32_to_cpu(info->cap.caps))); 875355da1ebSSage Weil ci->i_snap_caps |= le32_to_cpu(info->cap.caps); 876355da1ebSSage Weil if (cap_fmode >= 0) 877355da1ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 878355da1ebSSage Weil } 87904d000ebSSage Weil } else if (cap_fmode >= 0) { 880f3ae1b97SFabian Frederick pr_warn("mds issued no caps on %llx.%llx\n", 88104d000ebSSage Weil ceph_vinop(inode)); 88204d000ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 883355da1ebSSage Weil } 88431c542a1SYan, Zheng 88531c542a1SYan, Zheng if (iinfo->inline_version > 0 && 88631c542a1SYan, Zheng iinfo->inline_version >= ci->i_inline_version) { 88731c542a1SYan, Zheng int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; 88831c542a1SYan, Zheng ci->i_inline_version = iinfo->inline_version; 88931c542a1SYan, Zheng if (ci->i_inline_version != CEPH_INLINE_NONE && 89001deead0SYan, Zheng (locked_page || 89101deead0SYan, Zheng (le32_to_cpu(info->cap.caps) & cache_caps))) 89231c542a1SYan, Zheng fill_inline = true; 89331c542a1SYan, Zheng } 89431c542a1SYan, Zheng 895355da1ebSSage Weil spin_unlock(&ci->i_ceph_lock); 896355da1ebSSage Weil 89731c542a1SYan, Zheng if (fill_inline) 89801deead0SYan, Zheng ceph_fill_inline_data(inode, locked_page, 89931c542a1SYan, Zheng iinfo->inline_data, iinfo->inline_len); 90031c542a1SYan, Zheng 901d9df2783SYan, Zheng if (wake) 902d9df2783SYan, Zheng wake_up_all(&ci->i_cap_wq); 903d9df2783SYan, Zheng 904355da1ebSSage Weil /* queue truncate if we saw i_size decrease */ 905355da1ebSSage Weil if (queue_trunc) 906355da1ebSSage Weil ceph_queue_vmtruncate(inode); 907355da1ebSSage Weil 908355da1ebSSage Weil /* populate frag tree */ 9093e7fbe9cSYan, Zheng if (S_ISDIR(inode->i_mode)) 9103e7fbe9cSYan, Zheng ceph_fill_fragtree(inode, &info->fragtree, dirinfo); 911355da1ebSSage Weil 912355da1ebSSage Weil /* update delegation info? */ 913355da1ebSSage Weil if (dirinfo) 914355da1ebSSage Weil ceph_fill_dirfrag(inode, dirinfo); 915355da1ebSSage Weil 916355da1ebSSage Weil err = 0; 917355da1ebSSage Weil out: 918d9df2783SYan, Zheng if (new_cap) 919d9df2783SYan, Zheng ceph_put_cap(mdsc, new_cap); 920b6c1d5b8SSage Weil if (xattr_blob) 921355da1ebSSage Weil ceph_buffer_put(xattr_blob); 922355da1ebSSage Weil return err; 923355da1ebSSage Weil } 924355da1ebSSage Weil 925355da1ebSSage Weil /* 926355da1ebSSage Weil * caller should hold session s_mutex. 927355da1ebSSage Weil */ 928355da1ebSSage Weil static void update_dentry_lease(struct dentry *dentry, 929355da1ebSSage Weil struct ceph_mds_reply_lease *lease, 930355da1ebSSage Weil struct ceph_mds_session *session, 931355da1ebSSage Weil unsigned long from_time) 932355da1ebSSage Weil { 933355da1ebSSage Weil struct ceph_dentry_info *di = ceph_dentry(dentry); 934355da1ebSSage Weil long unsigned duration = le32_to_cpu(lease->duration_ms); 935355da1ebSSage Weil long unsigned ttl = from_time + (duration * HZ) / 1000; 936355da1ebSSage Weil long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; 937355da1ebSSage Weil struct inode *dir; 938355da1ebSSage Weil 939355da1ebSSage Weil /* only track leases on regular dentries */ 940355da1ebSSage Weil if (dentry->d_op != &ceph_dentry_ops) 941355da1ebSSage Weil return; 942355da1ebSSage Weil 943355da1ebSSage Weil spin_lock(&dentry->d_lock); 9442f90b852SSage Weil dout("update_dentry_lease %p duration %lu ms ttl %lu\n", 9452f90b852SSage Weil dentry, duration, ttl); 946355da1ebSSage Weil 947355da1ebSSage Weil /* make lease_rdcache_gen match directory */ 9482b0143b5SDavid Howells dir = d_inode(dentry->d_parent); 949355da1ebSSage Weil di->lease_shared_gen = ceph_inode(dir)->i_shared_gen; 950355da1ebSSage Weil 9512f90b852SSage Weil if (duration == 0) 952355da1ebSSage Weil goto out_unlock; 953355da1ebSSage Weil 954355da1ebSSage Weil if (di->lease_gen == session->s_cap_gen && 955355da1ebSSage Weil time_before(ttl, dentry->d_time)) 956355da1ebSSage Weil goto out_unlock; /* we already have a newer lease. */ 957355da1ebSSage Weil 958355da1ebSSage Weil if (di->lease_session && di->lease_session != session) 959355da1ebSSage Weil goto out_unlock; 960355da1ebSSage Weil 961355da1ebSSage Weil ceph_dentry_lru_touch(dentry); 962355da1ebSSage Weil 963355da1ebSSage Weil if (!di->lease_session) 964355da1ebSSage Weil di->lease_session = ceph_get_mds_session(session); 965355da1ebSSage Weil di->lease_gen = session->s_cap_gen; 966355da1ebSSage Weil di->lease_seq = le32_to_cpu(lease->seq); 967355da1ebSSage Weil di->lease_renew_after = half_ttl; 968355da1ebSSage Weil di->lease_renew_from = 0; 969355da1ebSSage Weil dentry->d_time = ttl; 970355da1ebSSage Weil out_unlock: 971355da1ebSSage Weil spin_unlock(&dentry->d_lock); 972355da1ebSSage Weil return; 973355da1ebSSage Weil } 974355da1ebSSage Weil 975355da1ebSSage Weil /* 9761cd3935bSSage Weil * splice a dentry to an inode. 9771cd3935bSSage Weil * caller must hold directory i_mutex for this to be safe. 9781cd3935bSSage Weil * 9791cd3935bSSage Weil * we will only rehash the resulting dentry if @prehash is 9801cd3935bSSage Weil * true; @prehash will be set to false (for the benefit of 9811cd3935bSSage Weil * the caller) if we fail. 9821cd3935bSSage Weil */ 9831cd3935bSSage Weil static struct dentry *splice_dentry(struct dentry *dn, struct inode *in, 9840a8a70f9SYan, Zheng bool *prehash) 9851cd3935bSSage Weil { 9861cd3935bSSage Weil struct dentry *realdn; 9871cd3935bSSage Weil 9882b0143b5SDavid Howells BUG_ON(d_inode(dn)); 9891cd3935bSSage Weil 9901cd3935bSSage Weil /* dn must be unhashed */ 9911cd3935bSSage Weil if (!d_unhashed(dn)) 9921cd3935bSSage Weil d_drop(dn); 99341d28bcaSAl Viro realdn = d_splice_alias(in, dn); 9941cd3935bSSage Weil if (IS_ERR(realdn)) { 995d69ed05aSSage Weil pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", 996d69ed05aSSage Weil PTR_ERR(realdn), dn, in, ceph_vinop(in)); 9971cd3935bSSage Weil if (prehash) 9981cd3935bSSage Weil *prehash = false; /* don't rehash on error */ 9991cd3935bSSage Weil dn = realdn; /* note realdn contains the error */ 10001cd3935bSSage Weil goto out; 10011cd3935bSSage Weil } else if (realdn) { 10021cd3935bSSage Weil dout("dn %p (%d) spliced with %p (%d) " 10031cd3935bSSage Weil "inode %p ino %llx.%llx\n", 100484d08fa8SAl Viro dn, d_count(dn), 100584d08fa8SAl Viro realdn, d_count(realdn), 10062b0143b5SDavid Howells d_inode(realdn), ceph_vinop(d_inode(realdn))); 10071cd3935bSSage Weil dput(dn); 10081cd3935bSSage Weil dn = realdn; 10091cd3935bSSage Weil } else { 10101cd3935bSSage Weil BUG_ON(!ceph_dentry(dn)); 10111cd3935bSSage Weil dout("dn %p attached to %p ino %llx.%llx\n", 10122b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn))); 10131cd3935bSSage Weil } 10141cd3935bSSage Weil if ((!prehash || *prehash) && d_unhashed(dn)) 10151cd3935bSSage Weil d_rehash(dn); 10161cd3935bSSage Weil out: 10171cd3935bSSage Weil return dn; 10181cd3935bSSage Weil } 10191cd3935bSSage Weil 10201cd3935bSSage Weil /* 1021355da1ebSSage Weil * Incorporate results into the local cache. This is either just 1022355da1ebSSage Weil * one inode, or a directory, dentry, and possibly linked-to inode (e.g., 1023355da1ebSSage Weil * after a lookup). 1024355da1ebSSage Weil * 1025355da1ebSSage Weil * A reply may contain 1026355da1ebSSage Weil * a directory inode along with a dentry. 1027355da1ebSSage Weil * and/or a target inode 1028355da1ebSSage Weil * 1029355da1ebSSage Weil * Called with snap_rwsem (read). 1030355da1ebSSage Weil */ 1031355da1ebSSage Weil int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, 1032355da1ebSSage Weil struct ceph_mds_session *session) 1033355da1ebSSage Weil { 1034355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1035355da1ebSSage Weil struct inode *in = NULL; 1036355da1ebSSage Weil struct ceph_vino vino; 10373d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(sb); 1038355da1ebSSage Weil int err = 0; 1039355da1ebSSage Weil 1040355da1ebSSage Weil dout("fill_trace %p is_dentry %d is_target %d\n", req, 1041355da1ebSSage Weil rinfo->head->is_dentry, rinfo->head->is_target); 1042355da1ebSSage Weil 1043355da1ebSSage Weil #if 0 1044355da1ebSSage Weil /* 1045355da1ebSSage Weil * Debugging hook: 1046355da1ebSSage Weil * 1047355da1ebSSage Weil * If we resend completed ops to a recovering mds, we get no 1048355da1ebSSage Weil * trace. Since that is very rare, pretend this is the case 1049355da1ebSSage Weil * to ensure the 'no trace' handlers in the callers behave. 1050355da1ebSSage Weil * 1051355da1ebSSage Weil * Fill in inodes unconditionally to avoid breaking cap 1052355da1ebSSage Weil * invariants. 1053355da1ebSSage Weil */ 1054355da1ebSSage Weil if (rinfo->head->op & CEPH_MDS_OP_WRITE) { 1055355da1ebSSage Weil pr_info("fill_trace faking empty trace on %lld %s\n", 1056355da1ebSSage Weil req->r_tid, ceph_mds_op_name(rinfo->head->op)); 1057355da1ebSSage Weil if (rinfo->head->is_dentry) { 1058355da1ebSSage Weil rinfo->head->is_dentry = 0; 1059355da1ebSSage Weil err = fill_inode(req->r_locked_dir, 1060355da1ebSSage Weil &rinfo->diri, rinfo->dirfrag, 1061355da1ebSSage Weil session, req->r_request_started, -1); 1062355da1ebSSage Weil } 1063355da1ebSSage Weil if (rinfo->head->is_target) { 1064355da1ebSSage Weil rinfo->head->is_target = 0; 1065355da1ebSSage Weil ininfo = rinfo->targeti.in; 1066355da1ebSSage Weil vino.ino = le64_to_cpu(ininfo->ino); 1067355da1ebSSage Weil vino.snap = le64_to_cpu(ininfo->snapid); 1068355da1ebSSage Weil in = ceph_get_inode(sb, vino); 1069355da1ebSSage Weil err = fill_inode(in, &rinfo->targeti, NULL, 1070355da1ebSSage Weil session, req->r_request_started, 1071355da1ebSSage Weil req->r_fmode); 1072355da1ebSSage Weil iput(in); 1073355da1ebSSage Weil } 1074355da1ebSSage Weil } 1075355da1ebSSage Weil #endif 1076355da1ebSSage Weil 1077355da1ebSSage Weil if (!rinfo->head->is_target && !rinfo->head->is_dentry) { 1078355da1ebSSage Weil dout("fill_trace reply is empty!\n"); 1079167c9e35SSage Weil if (rinfo->head->result == 0 && req->r_locked_dir) 1080167c9e35SSage Weil ceph_invalidate_dir_request(req); 1081355da1ebSSage Weil return 0; 1082355da1ebSSage Weil } 1083355da1ebSSage Weil 1084355da1ebSSage Weil if (rinfo->head->is_dentry) { 10855b1daecdSSage Weil struct inode *dir = req->r_locked_dir; 10865b1daecdSSage Weil 10876c5e50faSSage Weil if (dir) { 108801deead0SYan, Zheng err = fill_inode(dir, NULL, 108901deead0SYan, Zheng &rinfo->diri, rinfo->dirfrag, 10905b1daecdSSage Weil session, req->r_request_started, -1, 10915b1daecdSSage Weil &req->r_caps_reservation); 10925b1daecdSSage Weil if (err < 0) 109319913b4eSYan, Zheng goto done; 10946c5e50faSSage Weil } else { 10956c5e50faSSage Weil WARN_ON_ONCE(1); 10966c5e50faSSage Weil } 109719913b4eSYan, Zheng 109819913b4eSYan, Zheng if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) { 109919913b4eSYan, Zheng struct qstr dname; 110019913b4eSYan, Zheng struct dentry *dn, *parent; 110119913b4eSYan, Zheng 110219913b4eSYan, Zheng BUG_ON(!rinfo->head->is_target); 110319913b4eSYan, Zheng BUG_ON(req->r_dentry); 110419913b4eSYan, Zheng 110519913b4eSYan, Zheng parent = d_find_any_alias(dir); 110619913b4eSYan, Zheng BUG_ON(!parent); 110719913b4eSYan, Zheng 110819913b4eSYan, Zheng dname.name = rinfo->dname; 110919913b4eSYan, Zheng dname.len = rinfo->dname_len; 111019913b4eSYan, Zheng dname.hash = full_name_hash(dname.name, dname.len); 111119913b4eSYan, Zheng vino.ino = le64_to_cpu(rinfo->targeti.in->ino); 111219913b4eSYan, Zheng vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 111319913b4eSYan, Zheng retry_lookup: 111419913b4eSYan, Zheng dn = d_lookup(parent, &dname); 111519913b4eSYan, Zheng dout("d_lookup on parent=%p name=%.*s got %p\n", 111619913b4eSYan, Zheng parent, dname.len, dname.name, dn); 111719913b4eSYan, Zheng 111819913b4eSYan, Zheng if (!dn) { 111919913b4eSYan, Zheng dn = d_alloc(parent, &dname); 112019913b4eSYan, Zheng dout("d_alloc %p '%.*s' = %p\n", parent, 112119913b4eSYan, Zheng dname.len, dname.name, dn); 112219913b4eSYan, Zheng if (dn == NULL) { 112319913b4eSYan, Zheng dput(parent); 112419913b4eSYan, Zheng err = -ENOMEM; 112519913b4eSYan, Zheng goto done; 112619913b4eSYan, Zheng } 112719913b4eSYan, Zheng err = ceph_init_dentry(dn); 112819913b4eSYan, Zheng if (err < 0) { 112919913b4eSYan, Zheng dput(dn); 113019913b4eSYan, Zheng dput(parent); 113119913b4eSYan, Zheng goto done; 113219913b4eSYan, Zheng } 11332b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 11342b0143b5SDavid Howells (ceph_ino(d_inode(dn)) != vino.ino || 11352b0143b5SDavid Howells ceph_snap(d_inode(dn)) != vino.snap)) { 113619913b4eSYan, Zheng dout(" dn %p points to wrong inode %p\n", 11372b0143b5SDavid Howells dn, d_inode(dn)); 113819913b4eSYan, Zheng d_delete(dn); 113919913b4eSYan, Zheng dput(dn); 114019913b4eSYan, Zheng goto retry_lookup; 114119913b4eSYan, Zheng } 114219913b4eSYan, Zheng 114319913b4eSYan, Zheng req->r_dentry = dn; 114419913b4eSYan, Zheng dput(parent); 114519913b4eSYan, Zheng } 11465b1daecdSSage Weil } 11475b1daecdSSage Weil 114886b58d13SYan, Zheng if (rinfo->head->is_target) { 114986b58d13SYan, Zheng vino.ino = le64_to_cpu(rinfo->targeti.in->ino); 115086b58d13SYan, Zheng vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 115186b58d13SYan, Zheng 115286b58d13SYan, Zheng in = ceph_get_inode(sb, vino); 115386b58d13SYan, Zheng if (IS_ERR(in)) { 115486b58d13SYan, Zheng err = PTR_ERR(in); 115586b58d13SYan, Zheng goto done; 115686b58d13SYan, Zheng } 115786b58d13SYan, Zheng req->r_target_inode = in; 115886b58d13SYan, Zheng 115901deead0SYan, Zheng err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL, 116086b58d13SYan, Zheng session, req->r_request_started, 116148193012SYan, Zheng (!req->r_aborted && rinfo->head->result == 0) ? 116286b58d13SYan, Zheng req->r_fmode : -1, 116386b58d13SYan, Zheng &req->r_caps_reservation); 116486b58d13SYan, Zheng if (err < 0) { 116586b58d13SYan, Zheng pr_err("fill_inode badness %p %llx.%llx\n", 116686b58d13SYan, Zheng in, ceph_vinop(in)); 116786b58d13SYan, Zheng goto done; 116886b58d13SYan, Zheng } 116986b58d13SYan, Zheng } 117086b58d13SYan, Zheng 11719358c6d4SSage Weil /* 11729358c6d4SSage Weil * ignore null lease/binding on snapdir ENOENT, or else we 11739358c6d4SSage Weil * will have trouble splicing in the virtual snapdir later 11749358c6d4SSage Weil */ 11759358c6d4SSage Weil if (rinfo->head->is_dentry && !req->r_aborted && 11766c5e50faSSage Weil req->r_locked_dir && 11779358c6d4SSage Weil (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, 11783d14c5d2SYehuda Sadeh fsc->mount_options->snapdir_name, 11799358c6d4SSage Weil req->r_dentry->d_name.len))) { 1180355da1ebSSage Weil /* 1181355da1ebSSage Weil * lookup link rename : null -> possibly existing inode 1182355da1ebSSage Weil * mknod symlink mkdir : null -> new inode 1183355da1ebSSage Weil * unlink : linked -> null 1184355da1ebSSage Weil */ 1185355da1ebSSage Weil struct inode *dir = req->r_locked_dir; 1186355da1ebSSage Weil struct dentry *dn = req->r_dentry; 1187355da1ebSSage Weil bool have_dir_cap, have_lease; 1188355da1ebSSage Weil 1189355da1ebSSage Weil BUG_ON(!dn); 1190355da1ebSSage Weil BUG_ON(!dir); 11912b0143b5SDavid Howells BUG_ON(d_inode(dn->d_parent) != dir); 1192355da1ebSSage Weil BUG_ON(ceph_ino(dir) != 1193355da1ebSSage Weil le64_to_cpu(rinfo->diri.in->ino)); 1194355da1ebSSage Weil BUG_ON(ceph_snap(dir) != 1195355da1ebSSage Weil le64_to_cpu(rinfo->diri.in->snapid)); 1196355da1ebSSage Weil 1197355da1ebSSage Weil /* do we have a lease on the whole dir? */ 1198355da1ebSSage Weil have_dir_cap = 1199355da1ebSSage Weil (le32_to_cpu(rinfo->diri.in->cap.caps) & 1200355da1ebSSage Weil CEPH_CAP_FILE_SHARED); 1201355da1ebSSage Weil 1202355da1ebSSage Weil /* do we have a dn lease? */ 1203355da1ebSSage Weil have_lease = have_dir_cap || 12042f90b852SSage Weil le32_to_cpu(rinfo->dlease->duration_ms); 1205355da1ebSSage Weil if (!have_lease) 1206355da1ebSSage Weil dout("fill_trace no dentry lease or dir cap\n"); 1207355da1ebSSage Weil 1208355da1ebSSage Weil /* rename? */ 1209355da1ebSSage Weil if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { 12100a8a70f9SYan, Zheng struct inode *olddir = req->r_old_dentry_dir; 12110a8a70f9SYan, Zheng BUG_ON(!olddir); 12120a8a70f9SYan, Zheng 1213a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1214355da1ebSSage Weil req->r_old_dentry, 1215a455589fSAl Viro req->r_old_dentry, 1216a455589fSAl Viro dn, dn); 1217355da1ebSSage Weil dout("fill_trace doing d_move %p -> %p\n", 1218355da1ebSSage Weil req->r_old_dentry, dn); 1219c10f5e12SSage Weil 1220fdd4e158SYan, Zheng /* d_move screws up sibling dentries' offsets */ 1221fdd4e158SYan, Zheng ceph_dir_clear_ordered(dir); 1222fdd4e158SYan, Zheng ceph_dir_clear_ordered(olddir); 1223fdd4e158SYan, Zheng 1224355da1ebSSage Weil d_move(req->r_old_dentry, dn); 1225a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1226355da1ebSSage Weil req->r_old_dentry, 1227a455589fSAl Viro req->r_old_dentry, 1228a455589fSAl Viro dn, dn); 122981a6cf2dSSage Weil 1230c4a29f26SSage Weil /* ensure target dentry is invalidated, despite 1231c4a29f26SSage Weil rehashing bug in vfs_rename_dir */ 123281a6cf2dSSage Weil ceph_invalidate_dentry_lease(dn); 123381a6cf2dSSage Weil 123409adc80cSSage Weil dout("dn %p gets new offset %lld\n", req->r_old_dentry, 12351cd3935bSSage Weil ceph_dentry(req->r_old_dentry)->offset); 123681a6cf2dSSage Weil 1237355da1ebSSage Weil dn = req->r_old_dentry; /* use old_dentry */ 1238355da1ebSSage Weil } 1239355da1ebSSage Weil 1240355da1ebSSage Weil /* null dentry? */ 1241355da1ebSSage Weil if (!rinfo->head->is_target) { 1242355da1ebSSage Weil dout("fill_trace null dentry\n"); 12432b0143b5SDavid Howells if (d_really_is_positive(dn)) { 124470db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 1245355da1ebSSage Weil dout("d_delete %p\n", dn); 1246355da1ebSSage Weil d_delete(dn); 1247355da1ebSSage Weil } else { 1248355da1ebSSage Weil dout("d_instantiate %p NULL\n", dn); 1249355da1ebSSage Weil d_instantiate(dn, NULL); 1250355da1ebSSage Weil if (have_lease && d_unhashed(dn)) 1251355da1ebSSage Weil d_rehash(dn); 1252355da1ebSSage Weil update_dentry_lease(dn, rinfo->dlease, 1253355da1ebSSage Weil session, 1254355da1ebSSage Weil req->r_request_started); 1255355da1ebSSage Weil } 1256355da1ebSSage Weil goto done; 1257355da1ebSSage Weil } 1258355da1ebSSage Weil 1259355da1ebSSage Weil /* attach proper inode */ 12602b0143b5SDavid Howells if (d_really_is_negative(dn)) { 126170db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 126286b58d13SYan, Zheng ihold(in); 12630a8a70f9SYan, Zheng dn = splice_dentry(dn, in, &have_lease); 1264355da1ebSSage Weil if (IS_ERR(dn)) { 1265355da1ebSSage Weil err = PTR_ERR(dn); 1266355da1ebSSage Weil goto done; 1267355da1ebSSage Weil } 1268355da1ebSSage Weil req->r_dentry = dn; /* may have spliced */ 12692b0143b5SDavid Howells } else if (d_really_is_positive(dn) && d_inode(dn) != in) { 1270355da1ebSSage Weil dout(" %p links to %p %llx.%llx, not %llx.%llx\n", 12712b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn)), 127286b58d13SYan, Zheng ceph_vinop(in)); 1273355da1ebSSage Weil have_lease = false; 1274355da1ebSSage Weil } 1275355da1ebSSage Weil 1276355da1ebSSage Weil if (have_lease) 1277355da1ebSSage Weil update_dentry_lease(dn, rinfo->dlease, session, 1278355da1ebSSage Weil req->r_request_started); 1279355da1ebSSage Weil dout(" final dn %p\n", dn); 128086b58d13SYan, Zheng } else if (!req->r_aborted && 128186b58d13SYan, Zheng (req->r_op == CEPH_MDS_OP_LOOKUPSNAP || 128286b58d13SYan, Zheng req->r_op == CEPH_MDS_OP_MKSNAP)) { 1283355da1ebSSage Weil struct dentry *dn = req->r_dentry; 12840a8a70f9SYan, Zheng struct inode *dir = req->r_locked_dir; 1285355da1ebSSage Weil 1286355da1ebSSage Weil /* fill out a snapdir LOOKUPSNAP dentry */ 1287355da1ebSSage Weil BUG_ON(!dn); 12880a8a70f9SYan, Zheng BUG_ON(!dir); 12890a8a70f9SYan, Zheng BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); 1290355da1ebSSage Weil dout(" linking snapped dir %p to dn %p\n", in, dn); 129170db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 129286b58d13SYan, Zheng ihold(in); 12930a8a70f9SYan, Zheng dn = splice_dentry(dn, in, NULL); 1294355da1ebSSage Weil if (IS_ERR(dn)) { 1295355da1ebSSage Weil err = PTR_ERR(dn); 1296355da1ebSSage Weil goto done; 1297355da1ebSSage Weil } 1298355da1ebSSage Weil req->r_dentry = dn; /* may have spliced */ 1299355da1ebSSage Weil } 1300355da1ebSSage Weil done: 1301355da1ebSSage Weil dout("fill_trace done err=%d\n", err); 1302355da1ebSSage Weil return err; 1303355da1ebSSage Weil } 1304355da1ebSSage Weil 1305355da1ebSSage Weil /* 1306355da1ebSSage Weil * Prepopulate our cache with readdir results, leases, etc. 1307355da1ebSSage Weil */ 130879f9f99aSSage Weil static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, 130979f9f99aSSage Weil struct ceph_mds_session *session) 131079f9f99aSSage Weil { 131179f9f99aSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 131279f9f99aSSage Weil int i, err = 0; 131379f9f99aSSage Weil 131479f9f99aSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 131579f9f99aSSage Weil struct ceph_vino vino; 131679f9f99aSSage Weil struct inode *in; 131779f9f99aSSage Weil int rc; 131879f9f99aSSage Weil 131979f9f99aSSage Weil vino.ino = le64_to_cpu(rinfo->dir_in[i].in->ino); 132079f9f99aSSage Weil vino.snap = le64_to_cpu(rinfo->dir_in[i].in->snapid); 132179f9f99aSSage Weil 132279f9f99aSSage Weil in = ceph_get_inode(req->r_dentry->d_sb, vino); 132379f9f99aSSage Weil if (IS_ERR(in)) { 132479f9f99aSSage Weil err = PTR_ERR(in); 132579f9f99aSSage Weil dout("new_inode badness got %d\n", err); 132679f9f99aSSage Weil continue; 132779f9f99aSSage Weil } 132801deead0SYan, Zheng rc = fill_inode(in, NULL, &rinfo->dir_in[i], NULL, session, 132979f9f99aSSage Weil req->r_request_started, -1, 133079f9f99aSSage Weil &req->r_caps_reservation); 133179f9f99aSSage Weil if (rc < 0) { 133279f9f99aSSage Weil pr_err("fill_inode badness on %p got %d\n", in, rc); 133379f9f99aSSage Weil err = rc; 133479f9f99aSSage Weil continue; 133579f9f99aSSage Weil } 133679f9f99aSSage Weil } 133779f9f99aSSage Weil 133879f9f99aSSage Weil return err; 133979f9f99aSSage Weil } 134079f9f99aSSage Weil 1341fdd4e158SYan, Zheng void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) 1342fdd4e158SYan, Zheng { 1343fdd4e158SYan, Zheng if (ctl->page) { 1344fdd4e158SYan, Zheng kunmap(ctl->page); 1345fdd4e158SYan, Zheng page_cache_release(ctl->page); 1346fdd4e158SYan, Zheng ctl->page = NULL; 1347fdd4e158SYan, Zheng } 1348fdd4e158SYan, Zheng } 1349fdd4e158SYan, Zheng 1350fdd4e158SYan, Zheng static int fill_readdir_cache(struct inode *dir, struct dentry *dn, 1351fdd4e158SYan, Zheng struct ceph_readdir_cache_control *ctl, 1352fdd4e158SYan, Zheng struct ceph_mds_request *req) 1353fdd4e158SYan, Zheng { 1354fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(dir); 1355fdd4e158SYan, Zheng unsigned nsize = PAGE_CACHE_SIZE / sizeof(struct dentry*); 1356fdd4e158SYan, Zheng unsigned idx = ctl->index % nsize; 1357fdd4e158SYan, Zheng pgoff_t pgoff = ctl->index / nsize; 1358fdd4e158SYan, Zheng 1359fdd4e158SYan, Zheng if (!ctl->page || pgoff != page_index(ctl->page)) { 1360fdd4e158SYan, Zheng ceph_readdir_cache_release(ctl); 1361fdd4e158SYan, Zheng ctl->page = grab_cache_page(&dir->i_data, pgoff); 1362fdd4e158SYan, Zheng if (!ctl->page) { 1363fdd4e158SYan, Zheng ctl->index = -1; 1364fdd4e158SYan, Zheng return -ENOMEM; 1365fdd4e158SYan, Zheng } 1366fdd4e158SYan, Zheng /* reading/filling the cache are serialized by 1367fdd4e158SYan, Zheng * i_mutex, no need to use page lock */ 1368fdd4e158SYan, Zheng unlock_page(ctl->page); 1369fdd4e158SYan, Zheng ctl->dentries = kmap(ctl->page); 1370fdd4e158SYan, Zheng } 1371fdd4e158SYan, Zheng 1372fdd4e158SYan, Zheng if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && 1373fdd4e158SYan, Zheng req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { 1374fdd4e158SYan, Zheng dout("readdir cache dn %p idx %d\n", dn, ctl->index); 1375fdd4e158SYan, Zheng ctl->dentries[idx] = dn; 1376fdd4e158SYan, Zheng ctl->index++; 1377fdd4e158SYan, Zheng } else { 1378fdd4e158SYan, Zheng dout("disable readdir cache\n"); 1379fdd4e158SYan, Zheng ctl->index = -1; 1380fdd4e158SYan, Zheng } 1381fdd4e158SYan, Zheng return 0; 1382fdd4e158SYan, Zheng } 1383fdd4e158SYan, Zheng 1384355da1ebSSage Weil int ceph_readdir_prepopulate(struct ceph_mds_request *req, 1385355da1ebSSage Weil struct ceph_mds_session *session) 1386355da1ebSSage Weil { 1387355da1ebSSage Weil struct dentry *parent = req->r_dentry; 1388355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1389355da1ebSSage Weil struct qstr dname; 1390355da1ebSSage Weil struct dentry *dn; 1391355da1ebSSage Weil struct inode *in; 139286b58d13SYan, Zheng int err = 0, ret, i; 1393355da1ebSSage Weil struct inode *snapdir = NULL; 1394355da1ebSSage Weil struct ceph_mds_request_head *rhead = req->r_request->front.iov_base; 1395355da1ebSSage Weil struct ceph_dentry_info *di; 139681c6aea5SYan, Zheng u32 frag = le32_to_cpu(rhead->args.readdir.frag); 1397fdd4e158SYan, Zheng struct ceph_readdir_cache_control cache_ctl = {}; 1398fdd4e158SYan, Zheng 1399fdd4e158SYan, Zheng if (req->r_aborted) 1400fdd4e158SYan, Zheng return readdir_prepopulate_inodes_only(req, session); 140181c6aea5SYan, Zheng 140281c6aea5SYan, Zheng if (rinfo->dir_dir && 140381c6aea5SYan, Zheng le32_to_cpu(rinfo->dir_dir->frag) != frag) { 140481c6aea5SYan, Zheng dout("readdir_prepopulate got new frag %x -> %x\n", 140581c6aea5SYan, Zheng frag, le32_to_cpu(rinfo->dir_dir->frag)); 140681c6aea5SYan, Zheng frag = le32_to_cpu(rinfo->dir_dir->frag); 140781c6aea5SYan, Zheng if (ceph_frag_is_leftmost(frag)) 1408fdd4e158SYan, Zheng req->r_readdir_offset = 2; 140981c6aea5SYan, Zheng else 1410fdd4e158SYan, Zheng req->r_readdir_offset = 0; 141181c6aea5SYan, Zheng } 1412355da1ebSSage Weil 1413355da1ebSSage Weil if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { 14142b0143b5SDavid Howells snapdir = ceph_get_snapdir(d_inode(parent)); 1415355da1ebSSage Weil parent = d_find_alias(snapdir); 1416355da1ebSSage Weil dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", 1417355da1ebSSage Weil rinfo->dir_nr, parent); 1418355da1ebSSage Weil } else { 1419355da1ebSSage Weil dout("readdir_prepopulate %d items under dn %p\n", 1420355da1ebSSage Weil rinfo->dir_nr, parent); 1421355da1ebSSage Weil if (rinfo->dir_dir) 14222b0143b5SDavid Howells ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); 1423355da1ebSSage Weil } 1424355da1ebSSage Weil 1425fdd4e158SYan, Zheng if (ceph_frag_is_leftmost(frag) && req->r_readdir_offset == 2) { 1426fdd4e158SYan, Zheng /* note dir version at start of readdir so we can tell 1427fdd4e158SYan, Zheng * if any dentries get dropped */ 1428fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); 1429fdd4e158SYan, Zheng req->r_dir_release_cnt = atomic64_read(&ci->i_release_count); 1430fdd4e158SYan, Zheng req->r_dir_ordered_cnt = atomic64_read(&ci->i_ordered_count); 1431fdd4e158SYan, Zheng req->r_readdir_cache_idx = 0; 1432fdd4e158SYan, Zheng } 1433fdd4e158SYan, Zheng 1434fdd4e158SYan, Zheng cache_ctl.index = req->r_readdir_cache_idx; 1435fdd4e158SYan, Zheng 143686b58d13SYan, Zheng /* FIXME: release caps/leases if error occurs */ 1437355da1ebSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 1438355da1ebSSage Weil struct ceph_vino vino; 1439355da1ebSSage Weil 1440355da1ebSSage Weil dname.name = rinfo->dir_dname[i]; 1441355da1ebSSage Weil dname.len = rinfo->dir_dname_len[i]; 1442355da1ebSSage Weil dname.hash = full_name_hash(dname.name, dname.len); 1443355da1ebSSage Weil 1444355da1ebSSage Weil vino.ino = le64_to_cpu(rinfo->dir_in[i].in->ino); 1445355da1ebSSage Weil vino.snap = le64_to_cpu(rinfo->dir_in[i].in->snapid); 1446355da1ebSSage Weil 1447355da1ebSSage Weil retry_lookup: 1448355da1ebSSage Weil dn = d_lookup(parent, &dname); 1449355da1ebSSage Weil dout("d_lookup on parent=%p name=%.*s got %p\n", 1450355da1ebSSage Weil parent, dname.len, dname.name, dn); 1451355da1ebSSage Weil 1452355da1ebSSage Weil if (!dn) { 1453355da1ebSSage Weil dn = d_alloc(parent, &dname); 1454355da1ebSSage Weil dout("d_alloc %p '%.*s' = %p\n", parent, 1455355da1ebSSage Weil dname.len, dname.name, dn); 1456355da1ebSSage Weil if (dn == NULL) { 1457355da1ebSSage Weil dout("d_alloc badness\n"); 1458355da1ebSSage Weil err = -ENOMEM; 1459355da1ebSSage Weil goto out; 1460355da1ebSSage Weil } 146186b58d13SYan, Zheng ret = ceph_init_dentry(dn); 146286b58d13SYan, Zheng if (ret < 0) { 14638c696737SSage Weil dput(dn); 146486b58d13SYan, Zheng err = ret; 1465355da1ebSSage Weil goto out; 14668c696737SSage Weil } 14672b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 14682b0143b5SDavid Howells (ceph_ino(d_inode(dn)) != vino.ino || 14692b0143b5SDavid Howells ceph_snap(d_inode(dn)) != vino.snap)) { 1470355da1ebSSage Weil dout(" dn %p points to wrong inode %p\n", 14712b0143b5SDavid Howells dn, d_inode(dn)); 1472355da1ebSSage Weil d_delete(dn); 1473355da1ebSSage Weil dput(dn); 1474355da1ebSSage Weil goto retry_lookup; 1475355da1ebSSage Weil } 1476355da1ebSSage Weil 1477355da1ebSSage Weil /* inode */ 14782b0143b5SDavid Howells if (d_really_is_positive(dn)) { 14792b0143b5SDavid Howells in = d_inode(dn); 1480355da1ebSSage Weil } else { 1481355da1ebSSage Weil in = ceph_get_inode(parent->d_sb, vino); 1482ac1f12efSDan Carpenter if (IS_ERR(in)) { 1483355da1ebSSage Weil dout("new_inode badness\n"); 14842744c171SAl Viro d_drop(dn); 1485355da1ebSSage Weil dput(dn); 1486ac1f12efSDan Carpenter err = PTR_ERR(in); 1487355da1ebSSage Weil goto out; 1488355da1ebSSage Weil } 1489355da1ebSSage Weil } 1490355da1ebSSage Weil 1491fdd4e158SYan, Zheng ret = fill_inode(in, NULL, &rinfo->dir_in[i], NULL, session, 1492355da1ebSSage Weil req->r_request_started, -1, 1493fdd4e158SYan, Zheng &req->r_caps_reservation); 1494fdd4e158SYan, Zheng if (ret < 0) { 1495355da1ebSSage Weil pr_err("fill_inode badness on %p\n", in); 14962b0143b5SDavid Howells if (d_really_is_negative(dn)) 149786b58d13SYan, Zheng iput(in); 149886b58d13SYan, Zheng d_drop(dn); 1499fdd4e158SYan, Zheng err = ret; 1500d69ed05aSSage Weil goto next_item; 1501355da1ebSSage Weil } 150286b58d13SYan, Zheng 15032b0143b5SDavid Howells if (d_really_is_negative(dn)) { 15045cba372cSYan, Zheng struct dentry *realdn = splice_dentry(dn, in, NULL); 15055cba372cSYan, Zheng if (IS_ERR(realdn)) { 15065cba372cSYan, Zheng err = PTR_ERR(realdn); 15075cba372cSYan, Zheng d_drop(dn); 150886b58d13SYan, Zheng dn = NULL; 150986b58d13SYan, Zheng goto next_item; 151086b58d13SYan, Zheng } 15115cba372cSYan, Zheng dn = realdn; 151286b58d13SYan, Zheng } 151386b58d13SYan, Zheng 151486b58d13SYan, Zheng di = dn->d_fsdata; 1515fdd4e158SYan, Zheng di->offset = ceph_make_fpos(frag, i + req->r_readdir_offset); 151686b58d13SYan, Zheng 1517355da1ebSSage Weil update_dentry_lease(dn, rinfo->dir_dlease[i], 1518d69ed05aSSage Weil req->r_session, 1519d69ed05aSSage Weil req->r_request_started); 1520fdd4e158SYan, Zheng 1521fdd4e158SYan, Zheng if (err == 0 && cache_ctl.index >= 0) { 1522fdd4e158SYan, Zheng ret = fill_readdir_cache(d_inode(parent), dn, 1523fdd4e158SYan, Zheng &cache_ctl, req); 1524fdd4e158SYan, Zheng if (ret < 0) 1525fdd4e158SYan, Zheng err = ret; 1526fdd4e158SYan, Zheng } 1527d69ed05aSSage Weil next_item: 1528d69ed05aSSage Weil if (dn) 1529355da1ebSSage Weil dput(dn); 1530355da1ebSSage Weil } 1531355da1ebSSage Weil out: 1532fdd4e158SYan, Zheng if (err == 0) { 1533fdd4e158SYan, Zheng req->r_did_prepopulate = true; 1534fdd4e158SYan, Zheng req->r_readdir_cache_idx = cache_ctl.index; 1535fdd4e158SYan, Zheng } 1536fdd4e158SYan, Zheng ceph_readdir_cache_release(&cache_ctl); 1537355da1ebSSage Weil if (snapdir) { 1538355da1ebSSage Weil iput(snapdir); 1539355da1ebSSage Weil dput(parent); 1540355da1ebSSage Weil } 1541355da1ebSSage Weil dout("readdir_prepopulate done\n"); 1542355da1ebSSage Weil return err; 1543355da1ebSSage Weil } 1544355da1ebSSage Weil 1545355da1ebSSage Weil int ceph_inode_set_size(struct inode *inode, loff_t size) 1546355da1ebSSage Weil { 1547355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1548355da1ebSSage Weil int ret = 0; 1549355da1ebSSage Weil 1550be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1551355da1ebSSage Weil dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); 1552355da1ebSSage Weil inode->i_size = size; 1553355da1ebSSage Weil inode->i_blocks = (size + (1 << 9) - 1) >> 9; 1554355da1ebSSage Weil 1555355da1ebSSage Weil /* tell the MDS if we are approaching max_size */ 1556355da1ebSSage Weil if ((size << 1) >= ci->i_max_size && 1557355da1ebSSage Weil (ci->i_reported_size << 1) < ci->i_max_size) 1558355da1ebSSage Weil ret = 1; 1559355da1ebSSage Weil 1560be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1561355da1ebSSage Weil return ret; 1562355da1ebSSage Weil } 1563355da1ebSSage Weil 1564355da1ebSSage Weil /* 1565355da1ebSSage Weil * Write back inode data in a worker thread. (This can't be done 1566355da1ebSSage Weil * in the message handler context.) 1567355da1ebSSage Weil */ 15683c6f6b79SSage Weil void ceph_queue_writeback(struct inode *inode) 15693c6f6b79SSage Weil { 157015a2015fSSage Weil ihold(inode); 15713c6f6b79SSage Weil if (queue_work(ceph_inode_to_client(inode)->wb_wq, 15723c6f6b79SSage Weil &ceph_inode(inode)->i_wb_work)) { 15732c27c9a5SSage Weil dout("ceph_queue_writeback %p\n", inode); 15743c6f6b79SSage Weil } else { 15752c27c9a5SSage Weil dout("ceph_queue_writeback %p failed\n", inode); 157615a2015fSSage Weil iput(inode); 15773c6f6b79SSage Weil } 15783c6f6b79SSage Weil } 15793c6f6b79SSage Weil 15803c6f6b79SSage Weil static void ceph_writeback_work(struct work_struct *work) 1581355da1ebSSage Weil { 1582355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1583355da1ebSSage Weil i_wb_work); 1584355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1585355da1ebSSage Weil 1586355da1ebSSage Weil dout("writeback %p\n", inode); 1587355da1ebSSage Weil filemap_fdatawrite(&inode->i_data); 1588355da1ebSSage Weil iput(inode); 1589355da1ebSSage Weil } 1590355da1ebSSage Weil 1591355da1ebSSage Weil /* 15923c6f6b79SSage Weil * queue an async invalidation 15933c6f6b79SSage Weil */ 15943c6f6b79SSage Weil void ceph_queue_invalidate(struct inode *inode) 15953c6f6b79SSage Weil { 159615a2015fSSage Weil ihold(inode); 15973c6f6b79SSage Weil if (queue_work(ceph_inode_to_client(inode)->pg_inv_wq, 15983c6f6b79SSage Weil &ceph_inode(inode)->i_pg_inv_work)) { 15993c6f6b79SSage Weil dout("ceph_queue_invalidate %p\n", inode); 16003c6f6b79SSage Weil } else { 16013c6f6b79SSage Weil dout("ceph_queue_invalidate %p failed\n", inode); 160215a2015fSSage Weil iput(inode); 16033c6f6b79SSage Weil } 16043c6f6b79SSage Weil } 16053c6f6b79SSage Weil 16063c6f6b79SSage Weil /* 1607355da1ebSSage Weil * Invalidate inode pages in a worker thread. (This can't be done 1608355da1ebSSage Weil * in the message handler context.) 1609355da1ebSSage Weil */ 16103c6f6b79SSage Weil static void ceph_invalidate_work(struct work_struct *work) 1611355da1ebSSage Weil { 1612355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1613355da1ebSSage Weil i_pg_inv_work); 1614355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1615355da1ebSSage Weil u32 orig_gen; 1616355da1ebSSage Weil int check = 0; 1617355da1ebSSage Weil 1618b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1619be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1620355da1ebSSage Weil dout("invalidate_pages %p gen %d revoking %d\n", inode, 1621355da1ebSSage Weil ci->i_rdcache_gen, ci->i_rdcache_revoking); 1622cd045cb4SSage Weil if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { 16239563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 16249563f88cSYan, Zheng check = 1; 1625be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1626b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1627355da1ebSSage Weil goto out; 1628355da1ebSSage Weil } 1629355da1ebSSage Weil orig_gen = ci->i_rdcache_gen; 1630be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1631355da1ebSSage Weil 16324e217b5dSYan, Zheng truncate_pagecache(inode, 0); 1633355da1ebSSage Weil 1634be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1635cd045cb4SSage Weil if (orig_gen == ci->i_rdcache_gen && 1636cd045cb4SSage Weil orig_gen == ci->i_rdcache_revoking) { 1637355da1ebSSage Weil dout("invalidate_pages %p gen %d successful\n", inode, 1638355da1ebSSage Weil ci->i_rdcache_gen); 1639cd045cb4SSage Weil ci->i_rdcache_revoking--; 1640355da1ebSSage Weil check = 1; 1641355da1ebSSage Weil } else { 1642cd045cb4SSage Weil dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", 1643cd045cb4SSage Weil inode, orig_gen, ci->i_rdcache_gen, 1644cd045cb4SSage Weil ci->i_rdcache_revoking); 16459563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 16469563f88cSYan, Zheng check = 1; 1647355da1ebSSage Weil } 1648be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1649b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 16509563f88cSYan, Zheng out: 1651355da1ebSSage Weil if (check) 1652355da1ebSSage Weil ceph_check_caps(ci, 0, NULL); 1653355da1ebSSage Weil iput(inode); 1654355da1ebSSage Weil } 1655355da1ebSSage Weil 1656355da1ebSSage Weil 1657355da1ebSSage Weil /* 16583f99969fSYan, Zheng * called by trunc_wq; 1659355da1ebSSage Weil * 1660355da1ebSSage Weil * We also truncate in a separate thread as well. 1661355da1ebSSage Weil */ 16623c6f6b79SSage Weil static void ceph_vmtruncate_work(struct work_struct *work) 1663355da1ebSSage Weil { 1664355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1665355da1ebSSage Weil i_vmtruncate_work); 1666355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1667355da1ebSSage Weil 1668355da1ebSSage Weil dout("vmtruncate_work %p\n", inode); 1669b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 1670355da1ebSSage Weil iput(inode); 1671355da1ebSSage Weil } 1672355da1ebSSage Weil 1673355da1ebSSage Weil /* 16743c6f6b79SSage Weil * Queue an async vmtruncate. If we fail to queue work, we will handle 16753c6f6b79SSage Weil * the truncation the next time we call __ceph_do_pending_vmtruncate. 16763c6f6b79SSage Weil */ 16773c6f6b79SSage Weil void ceph_queue_vmtruncate(struct inode *inode) 16783c6f6b79SSage Weil { 16793c6f6b79SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 16803c6f6b79SSage Weil 168115a2015fSSage Weil ihold(inode); 168299ccbd22SMilosz Tanski 1683640ef79dSCheng Renquan if (queue_work(ceph_sb_to_client(inode->i_sb)->trunc_wq, 16843c6f6b79SSage Weil &ci->i_vmtruncate_work)) { 16853c6f6b79SSage Weil dout("ceph_queue_vmtruncate %p\n", inode); 16863c6f6b79SSage Weil } else { 16873c6f6b79SSage Weil dout("ceph_queue_vmtruncate %p failed, pending=%d\n", 16883c6f6b79SSage Weil inode, ci->i_truncate_pending); 168915a2015fSSage Weil iput(inode); 16903c6f6b79SSage Weil } 16913c6f6b79SSage Weil } 16923c6f6b79SSage Weil 16933c6f6b79SSage Weil /* 1694355da1ebSSage Weil * Make sure any pending truncation is applied before doing anything 1695355da1ebSSage Weil * that may depend on it. 1696355da1ebSSage Weil */ 1697b415bf4fSYan, Zheng void __ceph_do_pending_vmtruncate(struct inode *inode) 1698355da1ebSSage Weil { 1699355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1700355da1ebSSage Weil u64 to; 1701a85f50b6SYan, Zheng int wrbuffer_refs, finish = 0; 1702355da1ebSSage Weil 1703b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1704355da1ebSSage Weil retry: 1705be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1706355da1ebSSage Weil if (ci->i_truncate_pending == 0) { 1707355da1ebSSage Weil dout("__do_pending_vmtruncate %p none pending\n", inode); 1708be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1709b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1710355da1ebSSage Weil return; 1711355da1ebSSage Weil } 1712355da1ebSSage Weil 1713355da1ebSSage Weil /* 1714355da1ebSSage Weil * make sure any dirty snapped pages are flushed before we 1715355da1ebSSage Weil * possibly truncate them.. so write AND block! 1716355da1ebSSage Weil */ 1717355da1ebSSage Weil if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { 1718355da1ebSSage Weil dout("__do_pending_vmtruncate %p flushing snaps first\n", 1719355da1ebSSage Weil inode); 1720be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1721355da1ebSSage Weil filemap_write_and_wait_range(&inode->i_data, 0, 1722355da1ebSSage Weil inode->i_sb->s_maxbytes); 1723355da1ebSSage Weil goto retry; 1724355da1ebSSage Weil } 1725355da1ebSSage Weil 1726b0d7c223SYan, Zheng /* there should be no reader or writer */ 1727b0d7c223SYan, Zheng WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); 1728b0d7c223SYan, Zheng 1729355da1ebSSage Weil to = ci->i_truncate_size; 1730355da1ebSSage Weil wrbuffer_refs = ci->i_wrbuffer_ref; 1731355da1ebSSage Weil dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, 1732355da1ebSSage Weil ci->i_truncate_pending, to); 1733be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1734355da1ebSSage Weil 17354e217b5dSYan, Zheng truncate_pagecache(inode, to); 1736355da1ebSSage Weil 1737be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1738a85f50b6SYan, Zheng if (to == ci->i_truncate_size) { 1739a85f50b6SYan, Zheng ci->i_truncate_pending = 0; 1740a85f50b6SYan, Zheng finish = 1; 1741a85f50b6SYan, Zheng } 1742be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1743a85f50b6SYan, Zheng if (!finish) 1744a85f50b6SYan, Zheng goto retry; 1745355da1ebSSage Weil 1746b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1747b0d7c223SYan, Zheng 1748355da1ebSSage Weil if (wrbuffer_refs == 0) 1749355da1ebSSage Weil ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL); 1750a85f50b6SYan, Zheng 175103066f23SYehuda Sadeh wake_up_all(&ci->i_cap_wq); 1752355da1ebSSage Weil } 1753355da1ebSSage Weil 1754355da1ebSSage Weil /* 1755355da1ebSSage Weil * symlinks 1756355da1ebSSage Weil */ 1757355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops = { 1758355da1ebSSage Weil .readlink = generic_readlink, 1759ac194dccSAl Viro .follow_link = simple_follow_link, 17600b932672SYan, Zheng .setattr = ceph_setattr, 17610b932672SYan, Zheng .getattr = ceph_getattr, 17620b932672SYan, Zheng .setxattr = ceph_setxattr, 17630b932672SYan, Zheng .getxattr = ceph_getxattr, 17640b932672SYan, Zheng .listxattr = ceph_listxattr, 17650b932672SYan, Zheng .removexattr = ceph_removexattr, 1766355da1ebSSage Weil }; 1767355da1ebSSage Weil 1768355da1ebSSage Weil /* 1769355da1ebSSage Weil * setattr 1770355da1ebSSage Weil */ 1771355da1ebSSage Weil int ceph_setattr(struct dentry *dentry, struct iattr *attr) 1772355da1ebSSage Weil { 17732b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 1774355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1775355da1ebSSage Weil const unsigned int ia_valid = attr->ia_valid; 1776355da1ebSSage Weil struct ceph_mds_request *req; 17773d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = ceph_sb_to_client(dentry->d_sb)->mdsc; 1778f66fd9f0SYan, Zheng struct ceph_cap_flush *prealloc_cf; 1779355da1ebSSage Weil int issued; 1780355da1ebSSage Weil int release = 0, dirtied = 0; 1781355da1ebSSage Weil int mask = 0; 1782355da1ebSSage Weil int err = 0; 1783fca65b4aSSage Weil int inode_dirty_flags = 0; 1784604d1b02SYan, Zheng bool lock_snap_rwsem = false; 1785355da1ebSSage Weil 1786355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 1787355da1ebSSage Weil return -EROFS; 1788355da1ebSSage Weil 1789355da1ebSSage Weil err = inode_change_ok(inode, attr); 1790355da1ebSSage Weil if (err != 0) 1791355da1ebSSage Weil return err; 1792355da1ebSSage Weil 1793f66fd9f0SYan, Zheng prealloc_cf = ceph_alloc_cap_flush(); 1794f66fd9f0SYan, Zheng if (!prealloc_cf) 1795f66fd9f0SYan, Zheng return -ENOMEM; 1796f66fd9f0SYan, Zheng 1797355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, 1798355da1ebSSage Weil USE_AUTH_MDS); 1799f66fd9f0SYan, Zheng if (IS_ERR(req)) { 1800f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 1801355da1ebSSage Weil return PTR_ERR(req); 1802f66fd9f0SYan, Zheng } 1803355da1ebSSage Weil 1804be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1805355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 1806604d1b02SYan, Zheng 1807604d1b02SYan, Zheng if (!ci->i_head_snapc && 1808604d1b02SYan, Zheng (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { 1809604d1b02SYan, Zheng lock_snap_rwsem = true; 1810604d1b02SYan, Zheng if (!down_read_trylock(&mdsc->snap_rwsem)) { 1811604d1b02SYan, Zheng spin_unlock(&ci->i_ceph_lock); 1812604d1b02SYan, Zheng down_read(&mdsc->snap_rwsem); 1813604d1b02SYan, Zheng spin_lock(&ci->i_ceph_lock); 1814604d1b02SYan, Zheng issued = __ceph_caps_issued(ci, NULL); 1815604d1b02SYan, Zheng } 1816604d1b02SYan, Zheng } 1817604d1b02SYan, Zheng 1818355da1ebSSage Weil dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); 1819355da1ebSSage Weil 1820355da1ebSSage Weil if (ia_valid & ATTR_UID) { 1821355da1ebSSage Weil dout("setattr %p uid %d -> %d\n", inode, 1822bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 1823bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 1824355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1825355da1ebSSage Weil inode->i_uid = attr->ia_uid; 1826355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1827355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1828ab871b90SEric W. Biederman !uid_eq(attr->ia_uid, inode->i_uid)) { 1829ab871b90SEric W. Biederman req->r_args.setattr.uid = cpu_to_le32( 1830ab871b90SEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 1831355da1ebSSage Weil mask |= CEPH_SETATTR_UID; 1832355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1833355da1ebSSage Weil } 1834355da1ebSSage Weil } 1835355da1ebSSage Weil if (ia_valid & ATTR_GID) { 1836355da1ebSSage Weil dout("setattr %p gid %d -> %d\n", inode, 1837bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid), 1838bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 1839355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1840355da1ebSSage Weil inode->i_gid = attr->ia_gid; 1841355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1842355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1843ab871b90SEric W. Biederman !gid_eq(attr->ia_gid, inode->i_gid)) { 1844ab871b90SEric W. Biederman req->r_args.setattr.gid = cpu_to_le32( 1845ab871b90SEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 1846355da1ebSSage Weil mask |= CEPH_SETATTR_GID; 1847355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1848355da1ebSSage Weil } 1849355da1ebSSage Weil } 1850355da1ebSSage Weil if (ia_valid & ATTR_MODE) { 1851355da1ebSSage Weil dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, 1852355da1ebSSage Weil attr->ia_mode); 1853355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1854355da1ebSSage Weil inode->i_mode = attr->ia_mode; 1855355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1856355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1857355da1ebSSage Weil attr->ia_mode != inode->i_mode) { 18587221fe4cSGuangliang Zhao inode->i_mode = attr->ia_mode; 1859355da1ebSSage Weil req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); 1860355da1ebSSage Weil mask |= CEPH_SETATTR_MODE; 1861355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1862355da1ebSSage Weil } 1863355da1ebSSage Weil } 1864355da1ebSSage Weil 1865355da1ebSSage Weil if (ia_valid & ATTR_ATIME) { 1866355da1ebSSage Weil dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode, 1867355da1ebSSage Weil inode->i_atime.tv_sec, inode->i_atime.tv_nsec, 1868355da1ebSSage Weil attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); 1869355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 1870355da1ebSSage Weil ci->i_time_warp_seq++; 1871355da1ebSSage Weil inode->i_atime = attr->ia_atime; 1872355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1873355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 1874355da1ebSSage Weil timespec_compare(&inode->i_atime, 1875355da1ebSSage Weil &attr->ia_atime) < 0) { 1876355da1ebSSage Weil inode->i_atime = attr->ia_atime; 1877355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 1878355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1879355da1ebSSage Weil !timespec_equal(&inode->i_atime, &attr->ia_atime)) { 1880355da1ebSSage Weil ceph_encode_timespec(&req->r_args.setattr.atime, 1881355da1ebSSage Weil &attr->ia_atime); 1882355da1ebSSage Weil mask |= CEPH_SETATTR_ATIME; 1883355da1ebSSage Weil release |= CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD | 1884355da1ebSSage Weil CEPH_CAP_FILE_WR; 1885355da1ebSSage Weil } 1886355da1ebSSage Weil } 1887355da1ebSSage Weil if (ia_valid & ATTR_MTIME) { 1888355da1ebSSage Weil dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode, 1889355da1ebSSage Weil inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 1890355da1ebSSage Weil attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); 1891355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 1892355da1ebSSage Weil ci->i_time_warp_seq++; 1893355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 1894355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1895355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 1896355da1ebSSage Weil timespec_compare(&inode->i_mtime, 1897355da1ebSSage Weil &attr->ia_mtime) < 0) { 1898355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 1899355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 1900355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1901355da1ebSSage Weil !timespec_equal(&inode->i_mtime, &attr->ia_mtime)) { 1902355da1ebSSage Weil ceph_encode_timespec(&req->r_args.setattr.mtime, 1903355da1ebSSage Weil &attr->ia_mtime); 1904355da1ebSSage Weil mask |= CEPH_SETATTR_MTIME; 1905355da1ebSSage Weil release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | 1906355da1ebSSage Weil CEPH_CAP_FILE_WR; 1907355da1ebSSage Weil } 1908355da1ebSSage Weil } 1909355da1ebSSage Weil if (ia_valid & ATTR_SIZE) { 1910355da1ebSSage Weil dout("setattr %p size %lld -> %lld\n", inode, 1911355da1ebSSage Weil inode->i_size, attr->ia_size); 1912355da1ebSSage Weil if ((issued & CEPH_CAP_FILE_EXCL) && 1913355da1ebSSage Weil attr->ia_size > inode->i_size) { 1914355da1ebSSage Weil inode->i_size = attr->ia_size; 1915355da1ebSSage Weil inode->i_blocks = 1916355da1ebSSage Weil (attr->ia_size + (1 << 9) - 1) >> 9; 1917355da1ebSSage Weil inode->i_ctime = attr->ia_ctime; 1918355da1ebSSage Weil ci->i_reported_size = attr->ia_size; 1919355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1920355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1921355da1ebSSage Weil attr->ia_size != inode->i_size) { 1922355da1ebSSage Weil req->r_args.setattr.size = cpu_to_le64(attr->ia_size); 1923355da1ebSSage Weil req->r_args.setattr.old_size = 1924355da1ebSSage Weil cpu_to_le64(inode->i_size); 1925355da1ebSSage Weil mask |= CEPH_SETATTR_SIZE; 1926355da1ebSSage Weil release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | 1927355da1ebSSage Weil CEPH_CAP_FILE_WR; 1928355da1ebSSage Weil } 1929355da1ebSSage Weil } 1930355da1ebSSage Weil 1931355da1ebSSage Weil /* these do nothing */ 1932355da1ebSSage Weil if (ia_valid & ATTR_CTIME) { 1933355da1ebSSage Weil bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| 1934355da1ebSSage Weil ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; 1935355da1ebSSage Weil dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode, 1936355da1ebSSage Weil inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 1937355da1ebSSage Weil attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, 1938355da1ebSSage Weil only ? "ctime only" : "ignored"); 1939355da1ebSSage Weil inode->i_ctime = attr->ia_ctime; 1940355da1ebSSage Weil if (only) { 1941355da1ebSSage Weil /* 1942355da1ebSSage Weil * if kernel wants to dirty ctime but nothing else, 1943355da1ebSSage Weil * we need to choose a cap to dirty under, or do 1944355da1ebSSage Weil * a almost-no-op setattr 1945355da1ebSSage Weil */ 1946355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) 1947355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1948355da1ebSSage Weil else if (issued & CEPH_CAP_FILE_EXCL) 1949355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1950355da1ebSSage Weil else if (issued & CEPH_CAP_XATTR_EXCL) 1951355da1ebSSage Weil dirtied |= CEPH_CAP_XATTR_EXCL; 1952355da1ebSSage Weil else 1953355da1ebSSage Weil mask |= CEPH_SETATTR_CTIME; 1954355da1ebSSage Weil } 1955355da1ebSSage Weil } 1956355da1ebSSage Weil if (ia_valid & ATTR_FILE) 1957355da1ebSSage Weil dout("setattr %p ATTR_FILE ... hrm!\n", inode); 1958355da1ebSSage Weil 1959355da1ebSSage Weil if (dirtied) { 1960f66fd9f0SYan, Zheng inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, 1961f66fd9f0SYan, Zheng &prealloc_cf); 1962355da1ebSSage Weil inode->i_ctime = CURRENT_TIME; 1963355da1ebSSage Weil } 1964355da1ebSSage Weil 1965355da1ebSSage Weil release &= issued; 1966be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1967604d1b02SYan, Zheng if (lock_snap_rwsem) 1968604d1b02SYan, Zheng up_read(&mdsc->snap_rwsem); 1969355da1ebSSage Weil 1970fca65b4aSSage Weil if (inode_dirty_flags) 1971fca65b4aSSage Weil __mark_inode_dirty(inode, inode_dirty_flags); 1972fca65b4aSSage Weil 19737221fe4cSGuangliang Zhao if (ia_valid & ATTR_MODE) { 19744db658eaSLinus Torvalds err = posix_acl_chmod(inode, attr->ia_mode); 19757221fe4cSGuangliang Zhao if (err) 19767221fe4cSGuangliang Zhao goto out_put; 19777221fe4cSGuangliang Zhao } 19787221fe4cSGuangliang Zhao 1979355da1ebSSage Weil if (mask) { 198070b666c3SSage Weil req->r_inode = inode; 198170b666c3SSage Weil ihold(inode); 1982355da1ebSSage Weil req->r_inode_drop = release; 1983355da1ebSSage Weil req->r_args.setattr.mask = cpu_to_le32(mask); 1984355da1ebSSage Weil req->r_num_caps = 1; 1985752c8bdcSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 1986355da1ebSSage Weil } 1987355da1ebSSage Weil dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, 1988355da1ebSSage Weil ceph_cap_string(dirtied), mask); 1989355da1ebSSage Weil 1990355da1ebSSage Weil ceph_mdsc_put_request(req); 1991b0d7c223SYan, Zheng if (mask & CEPH_SETATTR_SIZE) 1992b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 1993f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 1994355da1ebSSage Weil return err; 19957221fe4cSGuangliang Zhao out_put: 1996355da1ebSSage Weil ceph_mdsc_put_request(req); 1997f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 1998355da1ebSSage Weil return err; 1999355da1ebSSage Weil } 2000355da1ebSSage Weil 2001355da1ebSSage Weil /* 2002355da1ebSSage Weil * Verify that we have a lease on the given mask. If not, 2003355da1ebSSage Weil * do a getattr against an mds. 2004355da1ebSSage Weil */ 200501deead0SYan, Zheng int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 200601deead0SYan, Zheng int mask, bool force) 2007355da1ebSSage Weil { 20083d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 20093d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 2010355da1ebSSage Weil struct ceph_mds_request *req; 2011355da1ebSSage Weil int err; 2012355da1ebSSage Weil 2013355da1ebSSage Weil if (ceph_snap(inode) == CEPH_SNAPDIR) { 2014355da1ebSSage Weil dout("do_getattr inode %p SNAPDIR\n", inode); 2015355da1ebSSage Weil return 0; 2016355da1ebSSage Weil } 2017355da1ebSSage Weil 201801deead0SYan, Zheng dout("do_getattr inode %p mask %s mode 0%o\n", 201901deead0SYan, Zheng inode, ceph_cap_string(mask), inode->i_mode); 2020508b32d8SYan, Zheng if (!force && ceph_caps_issued_mask(ceph_inode(inode), mask, 1)) 2021355da1ebSSage Weil return 0; 2022355da1ebSSage Weil 2023355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS); 2024355da1ebSSage Weil if (IS_ERR(req)) 2025355da1ebSSage Weil return PTR_ERR(req); 202670b666c3SSage Weil req->r_inode = inode; 202770b666c3SSage Weil ihold(inode); 2028355da1ebSSage Weil req->r_num_caps = 1; 2029355da1ebSSage Weil req->r_args.getattr.mask = cpu_to_le32(mask); 203001deead0SYan, Zheng req->r_locked_page = locked_page; 2031355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 203201deead0SYan, Zheng if (locked_page && err == 0) { 203301deead0SYan, Zheng u64 inline_version = req->r_reply_info.targeti.inline_version; 203401deead0SYan, Zheng if (inline_version == 0) { 203501deead0SYan, Zheng /* the reply is supposed to contain inline data */ 203601deead0SYan, Zheng err = -EINVAL; 203701deead0SYan, Zheng } else if (inline_version == CEPH_INLINE_NONE) { 203801deead0SYan, Zheng err = -ENODATA; 203901deead0SYan, Zheng } else { 204001deead0SYan, Zheng err = req->r_reply_info.targeti.inline_len; 204101deead0SYan, Zheng } 204201deead0SYan, Zheng } 2043355da1ebSSage Weil ceph_mdsc_put_request(req); 2044355da1ebSSage Weil dout("do_getattr result=%d\n", err); 2045355da1ebSSage Weil return err; 2046355da1ebSSage Weil } 2047355da1ebSSage Weil 2048355da1ebSSage Weil 2049355da1ebSSage Weil /* 2050355da1ebSSage Weil * Check inode permissions. We verify we have a valid value for 2051355da1ebSSage Weil * the AUTH cap, then call the generic handler. 2052355da1ebSSage Weil */ 205310556cb2SAl Viro int ceph_permission(struct inode *inode, int mask) 2054355da1ebSSage Weil { 2055b74c79e9SNick Piggin int err; 2056b74c79e9SNick Piggin 205710556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 2058b74c79e9SNick Piggin return -ECHILD; 2059b74c79e9SNick Piggin 2060508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); 2061355da1ebSSage Weil 2062355da1ebSSage Weil if (!err) 20632830ba7fSAl Viro err = generic_permission(inode, mask); 2064355da1ebSSage Weil return err; 2065355da1ebSSage Weil } 2066355da1ebSSage Weil 2067355da1ebSSage Weil /* 2068355da1ebSSage Weil * Get all attributes. Hopefully somedata we'll have a statlite() 2069355da1ebSSage Weil * and can limit the fields we require to be accurate. 2070355da1ebSSage Weil */ 2071355da1ebSSage Weil int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, 2072355da1ebSSage Weil struct kstat *stat) 2073355da1ebSSage Weil { 20742b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 2075232d4b01SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 2076355da1ebSSage Weil int err; 2077355da1ebSSage Weil 2078508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL, false); 2079355da1ebSSage Weil if (!err) { 2080355da1ebSSage Weil generic_fillattr(inode, stat); 2081ad1fee96SYehuda Sadeh stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino); 2082355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 2083355da1ebSSage Weil stat->dev = ceph_snap(inode); 2084355da1ebSSage Weil else 2085355da1ebSSage Weil stat->dev = 0; 2086232d4b01SSage Weil if (S_ISDIR(inode->i_mode)) { 20871c1266bbSYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), 20881c1266bbSYehuda Sadeh RBYTES)) 2089232d4b01SSage Weil stat->size = ci->i_rbytes; 20901c1266bbSYehuda Sadeh else 20911c1266bbSYehuda Sadeh stat->size = ci->i_files + ci->i_subdirs; 2092232d4b01SSage Weil stat->blocks = 0; 2093355da1ebSSage Weil stat->blksize = 65536; 2094355da1ebSSage Weil } 2095232d4b01SSage Weil } 2096355da1ebSSage Weil return err; 2097355da1ebSSage Weil } 2098