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)); 3995ea5c5e0SYan, Zheng ci->i_pool_ns_len = 0; 4006c0f3af7SSage Weil 401355da1ebSSage Weil ci->i_fragtree = RB_ROOT; 402355da1ebSSage Weil mutex_init(&ci->i_fragtree_mutex); 403355da1ebSSage Weil 404355da1ebSSage Weil ci->i_xattrs.blob = NULL; 405355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 406355da1ebSSage Weil ci->i_xattrs.dirty = false; 407355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 408355da1ebSSage Weil ci->i_xattrs.count = 0; 409355da1ebSSage Weil ci->i_xattrs.names_size = 0; 410355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 411355da1ebSSage Weil ci->i_xattrs.version = 0; 412355da1ebSSage Weil ci->i_xattrs.index_version = 0; 413355da1ebSSage Weil 414355da1ebSSage Weil ci->i_caps = RB_ROOT; 415355da1ebSSage Weil ci->i_auth_cap = NULL; 416355da1ebSSage Weil ci->i_dirty_caps = 0; 417355da1ebSSage Weil ci->i_flushing_caps = 0; 418355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_dirty_item); 419355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_flushing_item); 420f66fd9f0SYan, Zheng ci->i_prealloc_cap_flush = NULL; 421553adfd9SYan, Zheng ci->i_cap_flush_tree = RB_ROOT; 422355da1ebSSage Weil init_waitqueue_head(&ci->i_cap_wq); 423355da1ebSSage Weil ci->i_hold_caps_min = 0; 424355da1ebSSage Weil ci->i_hold_caps_max = 0; 425355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_delay_list); 426355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_cap_snaps); 427355da1ebSSage Weil ci->i_head_snapc = NULL; 428355da1ebSSage Weil ci->i_snap_caps = 0; 429355da1ebSSage Weil 430355da1ebSSage Weil for (i = 0; i < CEPH_FILE_MODE_NUM; i++) 431355da1ebSSage Weil ci->i_nr_by_mode[i] = 0; 432355da1ebSSage Weil 433b0d7c223SYan, Zheng mutex_init(&ci->i_truncate_mutex); 434355da1ebSSage Weil ci->i_truncate_seq = 0; 435355da1ebSSage Weil ci->i_truncate_size = 0; 436355da1ebSSage Weil ci->i_truncate_pending = 0; 437355da1ebSSage Weil 438355da1ebSSage Weil ci->i_max_size = 0; 439355da1ebSSage Weil ci->i_reported_size = 0; 440355da1ebSSage Weil ci->i_wanted_max_size = 0; 441355da1ebSSage Weil ci->i_requested_max_size = 0; 442355da1ebSSage Weil 443355da1ebSSage Weil ci->i_pin_ref = 0; 444355da1ebSSage Weil ci->i_rd_ref = 0; 445355da1ebSSage Weil ci->i_rdcache_ref = 0; 446355da1ebSSage Weil ci->i_wr_ref = 0; 447d3d0720dSHenry C Chang ci->i_wb_ref = 0; 448355da1ebSSage Weil ci->i_wrbuffer_ref = 0; 449355da1ebSSage Weil ci->i_wrbuffer_ref_head = 0; 450355da1ebSSage Weil ci->i_shared_gen = 0; 451355da1ebSSage Weil ci->i_rdcache_gen = 0; 452355da1ebSSage Weil ci->i_rdcache_revoking = 0; 453355da1ebSSage Weil 454355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_writes); 455355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_unsafe_dirops); 45668cd5b4bSYan, Zheng INIT_LIST_HEAD(&ci->i_unsafe_iops); 457355da1ebSSage Weil spin_lock_init(&ci->i_unsafe_lock); 458355da1ebSSage Weil 459355da1ebSSage Weil ci->i_snap_realm = NULL; 460355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_realm_item); 461355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_flush_item); 462355da1ebSSage Weil 4633c6f6b79SSage Weil INIT_WORK(&ci->i_wb_work, ceph_writeback_work); 4643c6f6b79SSage Weil INIT_WORK(&ci->i_pg_inv_work, ceph_invalidate_work); 465355da1ebSSage Weil 466355da1ebSSage Weil INIT_WORK(&ci->i_vmtruncate_work, ceph_vmtruncate_work); 467355da1ebSSage Weil 46899ccbd22SMilosz Tanski ceph_fscache_inode_init(ci); 46999ccbd22SMilosz Tanski 470355da1ebSSage Weil return &ci->vfs_inode; 471355da1ebSSage Weil } 472355da1ebSSage Weil 473fa0d7e3dSNick Piggin static void ceph_i_callback(struct rcu_head *head) 474fa0d7e3dSNick Piggin { 475fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 476fa0d7e3dSNick Piggin struct ceph_inode_info *ci = ceph_inode(inode); 477fa0d7e3dSNick Piggin 478fa0d7e3dSNick Piggin kmem_cache_free(ceph_inode_cachep, ci); 479fa0d7e3dSNick Piggin } 480fa0d7e3dSNick Piggin 481355da1ebSSage Weil void ceph_destroy_inode(struct inode *inode) 482355da1ebSSage Weil { 483355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 484355da1ebSSage Weil struct ceph_inode_frag *frag; 485355da1ebSSage Weil struct rb_node *n; 486355da1ebSSage Weil 487355da1ebSSage Weil dout("destroy_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); 488355da1ebSSage Weil 48999ccbd22SMilosz Tanski ceph_fscache_unregister_inode_cookie(ci); 49099ccbd22SMilosz Tanski 491355da1ebSSage Weil ceph_queue_caps_release(inode); 492355da1ebSSage Weil 4938b218b8aSSage Weil /* 4948b218b8aSSage Weil * we may still have a snap_realm reference if there are stray 495d9df2783SYan, Zheng * caps in i_snap_caps. 4968b218b8aSSage Weil */ 4978b218b8aSSage Weil if (ci->i_snap_realm) { 4988b218b8aSSage Weil struct ceph_mds_client *mdsc = 4993d14c5d2SYehuda Sadeh ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; 5008b218b8aSSage Weil struct ceph_snap_realm *realm = ci->i_snap_realm; 5018b218b8aSSage Weil 5028b218b8aSSage Weil dout(" dropping residual ref to snap realm %p\n", realm); 5038b218b8aSSage Weil spin_lock(&realm->inodes_with_caps_lock); 5048b218b8aSSage Weil list_del_init(&ci->i_snap_realm_item); 5058b218b8aSSage Weil spin_unlock(&realm->inodes_with_caps_lock); 5068b218b8aSSage Weil ceph_put_snap_realm(mdsc, realm); 5078b218b8aSSage Weil } 5088b218b8aSSage Weil 509355da1ebSSage Weil kfree(ci->i_symlink); 510355da1ebSSage Weil while ((n = rb_first(&ci->i_fragtree)) != NULL) { 511355da1ebSSage Weil frag = rb_entry(n, struct ceph_inode_frag, node); 512355da1ebSSage Weil rb_erase(n, &ci->i_fragtree); 513355da1ebSSage Weil kfree(frag); 514355da1ebSSage Weil } 515355da1ebSSage Weil 516355da1ebSSage Weil __ceph_destroy_xattrs(ci); 517b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 518355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 519b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 520355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 521355da1ebSSage Weil 522fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, ceph_i_callback); 523355da1ebSSage Weil } 524355da1ebSSage Weil 5259f12bd11SYan, Zheng int ceph_drop_inode(struct inode *inode) 5269f12bd11SYan, Zheng { 5279f12bd11SYan, Zheng /* 5289f12bd11SYan, Zheng * Positve dentry and corresponding inode are always accompanied 5299f12bd11SYan, Zheng * in MDS reply. So no need to keep inode in the cache after 5309f12bd11SYan, Zheng * dropping all its aliases. 5319f12bd11SYan, Zheng */ 5329f12bd11SYan, Zheng return 1; 5339f12bd11SYan, Zheng } 5349f12bd11SYan, Zheng 535355da1ebSSage Weil /* 536355da1ebSSage Weil * Helpers to fill in size, ctime, mtime, and atime. We have to be 537355da1ebSSage Weil * careful because either the client or MDS may have more up to date 538355da1ebSSage Weil * info, depending on which capabilities are held, and whether 539355da1ebSSage Weil * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime 540355da1ebSSage Weil * and size are monotonically increasing, except when utimes() or 541355da1ebSSage Weil * truncate() increments the corresponding _seq values.) 542355da1ebSSage Weil */ 543355da1ebSSage Weil int ceph_fill_file_size(struct inode *inode, int issued, 544355da1ebSSage Weil u32 truncate_seq, u64 truncate_size, u64 size) 545355da1ebSSage Weil { 546355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 547355da1ebSSage Weil int queue_trunc = 0; 548355da1ebSSage Weil 549355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || 550355da1ebSSage Weil (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { 551355da1ebSSage Weil dout("size %lld -> %llu\n", inode->i_size, size); 55299c88e69SYan, Zheng i_size_write(inode, size); 553355da1ebSSage Weil inode->i_blocks = (size + (1<<9) - 1) >> 9; 554355da1ebSSage Weil ci->i_reported_size = size; 555355da1ebSSage Weil if (truncate_seq != ci->i_truncate_seq) { 556355da1ebSSage Weil dout("truncate_seq %u -> %u\n", 557355da1ebSSage Weil ci->i_truncate_seq, truncate_seq); 558355da1ebSSage Weil ci->i_truncate_seq = truncate_seq; 559b0d7c223SYan, Zheng 560b0d7c223SYan, Zheng /* the MDS should have revoked these caps */ 561b0d7c223SYan, Zheng WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | 562b0d7c223SYan, Zheng CEPH_CAP_FILE_RD | 563b0d7c223SYan, Zheng CEPH_CAP_FILE_WR | 564b0d7c223SYan, Zheng CEPH_CAP_FILE_LAZYIO)); 5653d497d85SYehuda Sadeh /* 5663d497d85SYehuda Sadeh * If we hold relevant caps, or in the case where we're 5673d497d85SYehuda Sadeh * not the only client referencing this file and we 5683d497d85SYehuda Sadeh * don't hold those caps, then we need to check whether 5693d497d85SYehuda Sadeh * the file is either opened or mmaped 5703d497d85SYehuda Sadeh */ 571b0d7c223SYan, Zheng if ((issued & (CEPH_CAP_FILE_CACHE| 572b0d7c223SYan, Zheng CEPH_CAP_FILE_BUFFER)) || 5733d497d85SYehuda Sadeh mapping_mapped(inode->i_mapping) || 5743d497d85SYehuda Sadeh __ceph_caps_file_wanted(ci)) { 575355da1ebSSage Weil ci->i_truncate_pending++; 576355da1ebSSage Weil queue_trunc = 1; 577355da1ebSSage Weil } 578355da1ebSSage Weil } 579355da1ebSSage Weil } 580355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && 581355da1ebSSage Weil ci->i_truncate_size != truncate_size) { 582355da1ebSSage Weil dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, 583355da1ebSSage Weil truncate_size); 584355da1ebSSage Weil ci->i_truncate_size = truncate_size; 585355da1ebSSage Weil } 58699ccbd22SMilosz Tanski 58799ccbd22SMilosz Tanski if (queue_trunc) 58899ccbd22SMilosz Tanski ceph_fscache_invalidate(inode); 58999ccbd22SMilosz Tanski 590355da1ebSSage Weil return queue_trunc; 591355da1ebSSage Weil } 592355da1ebSSage Weil 593355da1ebSSage Weil void ceph_fill_file_time(struct inode *inode, int issued, 594355da1ebSSage Weil u64 time_warp_seq, struct timespec *ctime, 595355da1ebSSage Weil struct timespec *mtime, struct timespec *atime) 596355da1ebSSage Weil { 597355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 598355da1ebSSage Weil int warn = 0; 599355da1ebSSage Weil 600355da1ebSSage Weil if (issued & (CEPH_CAP_FILE_EXCL| 601355da1ebSSage Weil CEPH_CAP_FILE_WR| 602d8672d64SSage Weil CEPH_CAP_FILE_BUFFER| 603d8672d64SSage Weil CEPH_CAP_AUTH_EXCL| 604d8672d64SSage Weil CEPH_CAP_XATTR_EXCL)) { 605355da1ebSSage Weil if (timespec_compare(ctime, &inode->i_ctime) > 0) { 606355da1ebSSage Weil dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n", 607355da1ebSSage Weil inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 608355da1ebSSage Weil ctime->tv_sec, ctime->tv_nsec); 609355da1ebSSage Weil inode->i_ctime = *ctime; 610355da1ebSSage Weil } 611355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { 612355da1ebSSage Weil /* the MDS did a utimes() */ 613355da1ebSSage Weil dout("mtime %ld.%09ld -> %ld.%09ld " 614355da1ebSSage Weil "tw %d -> %d\n", 615355da1ebSSage Weil inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 616355da1ebSSage Weil mtime->tv_sec, mtime->tv_nsec, 617355da1ebSSage Weil ci->i_time_warp_seq, (int)time_warp_seq); 618355da1ebSSage Weil 619355da1ebSSage Weil inode->i_mtime = *mtime; 620355da1ebSSage Weil inode->i_atime = *atime; 621355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 622355da1ebSSage Weil } else if (time_warp_seq == ci->i_time_warp_seq) { 623355da1ebSSage Weil /* nobody did utimes(); take the max */ 624355da1ebSSage Weil if (timespec_compare(mtime, &inode->i_mtime) > 0) { 625355da1ebSSage Weil dout("mtime %ld.%09ld -> %ld.%09ld inc\n", 626355da1ebSSage Weil inode->i_mtime.tv_sec, 627355da1ebSSage Weil inode->i_mtime.tv_nsec, 628355da1ebSSage Weil mtime->tv_sec, mtime->tv_nsec); 629355da1ebSSage Weil inode->i_mtime = *mtime; 630355da1ebSSage Weil } 631355da1ebSSage Weil if (timespec_compare(atime, &inode->i_atime) > 0) { 632355da1ebSSage Weil dout("atime %ld.%09ld -> %ld.%09ld inc\n", 633355da1ebSSage Weil inode->i_atime.tv_sec, 634355da1ebSSage Weil inode->i_atime.tv_nsec, 635355da1ebSSage Weil atime->tv_sec, atime->tv_nsec); 636355da1ebSSage Weil inode->i_atime = *atime; 637355da1ebSSage Weil } 638355da1ebSSage Weil } else if (issued & CEPH_CAP_FILE_EXCL) { 639355da1ebSSage Weil /* we did a utimes(); ignore mds values */ 640355da1ebSSage Weil } else { 641355da1ebSSage Weil warn = 1; 642355da1ebSSage Weil } 643355da1ebSSage Weil } else { 644d8672d64SSage Weil /* we have no write|excl caps; whatever the MDS says is true */ 645355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { 646355da1ebSSage Weil inode->i_ctime = *ctime; 647355da1ebSSage Weil inode->i_mtime = *mtime; 648355da1ebSSage Weil inode->i_atime = *atime; 649355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 650355da1ebSSage Weil } else { 651355da1ebSSage Weil warn = 1; 652355da1ebSSage Weil } 653355da1ebSSage Weil } 654355da1ebSSage Weil if (warn) /* time_warp_seq shouldn't go backwards */ 655355da1ebSSage Weil dout("%p mds time_warp_seq %llu < %u\n", 656355da1ebSSage Weil inode, time_warp_seq, ci->i_time_warp_seq); 657355da1ebSSage Weil } 658355da1ebSSage Weil 659355da1ebSSage Weil /* 660355da1ebSSage Weil * Populate an inode based on info from mds. May be called on new or 661355da1ebSSage Weil * existing inodes. 662355da1ebSSage Weil */ 66301deead0SYan, Zheng static int fill_inode(struct inode *inode, struct page *locked_page, 664355da1ebSSage Weil struct ceph_mds_reply_info_in *iinfo, 665355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo, 666355da1ebSSage Weil struct ceph_mds_session *session, 667355da1ebSSage Weil unsigned long ttl_from, int cap_fmode, 668355da1ebSSage Weil struct ceph_cap_reservation *caps_reservation) 669355da1ebSSage Weil { 670d9df2783SYan, Zheng struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; 671355da1ebSSage Weil struct ceph_mds_reply_inode *info = iinfo->in; 672355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 673f98a128aSYan, Zheng int issued = 0, implemented, new_issued; 674355da1ebSSage Weil struct timespec mtime, atime, ctime; 675355da1ebSSage Weil struct ceph_buffer *xattr_blob = NULL; 676d9df2783SYan, Zheng struct ceph_cap *new_cap = NULL; 677355da1ebSSage Weil int err = 0; 678d9df2783SYan, Zheng bool wake = false; 679f98a128aSYan, Zheng bool queue_trunc = false; 680f98a128aSYan, Zheng bool new_version = false; 68131c542a1SYan, Zheng bool fill_inline = false; 682355da1ebSSage Weil 683355da1ebSSage Weil dout("fill_inode %p ino %llx.%llx v %llu had %llu\n", 684355da1ebSSage Weil inode, ceph_vinop(inode), le64_to_cpu(info->version), 685355da1ebSSage Weil ci->i_version); 686355da1ebSSage Weil 687d9df2783SYan, Zheng /* prealloc new cap struct */ 688d9df2783SYan, Zheng if (info->cap.caps && ceph_snap(inode) == CEPH_NOSNAP) 689d9df2783SYan, Zheng new_cap = ceph_get_cap(mdsc, caps_reservation); 690d9df2783SYan, Zheng 691355da1ebSSage Weil /* 692355da1ebSSage Weil * prealloc xattr data, if it looks like we'll need it. only 693355da1ebSSage Weil * if len > 4 (meaning there are actually xattrs; the first 4 694355da1ebSSage Weil * bytes are the xattr count). 695355da1ebSSage Weil */ 696355da1ebSSage Weil if (iinfo->xattr_len > 4) { 697b6c1d5b8SSage Weil xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); 698355da1ebSSage Weil if (!xattr_blob) 699355da1ebSSage Weil pr_err("fill_inode ENOMEM xattr blob %d bytes\n", 700355da1ebSSage Weil iinfo->xattr_len); 701355da1ebSSage Weil } 702355da1ebSSage Weil 703be655596SSage Weil spin_lock(&ci->i_ceph_lock); 704355da1ebSSage Weil 705355da1ebSSage Weil /* 706355da1ebSSage Weil * provided version will be odd if inode value is projected, 7078bd59e01SSage Weil * even if stable. skip the update if we have newer stable 7088bd59e01SSage Weil * info (ours>=theirs, e.g. due to racing mds replies), unless 7098bd59e01SSage Weil * we are getting projected (unstable) info (in which case the 7108bd59e01SSage Weil * version is odd, and we want ours>theirs). 7118bd59e01SSage Weil * us them 7128bd59e01SSage Weil * 2 2 skip 7138bd59e01SSage Weil * 3 2 skip 7148bd59e01SSage Weil * 3 3 update 715355da1ebSSage Weil */ 716f98a128aSYan, Zheng if (ci->i_version == 0 || 717f98a128aSYan, Zheng ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 718f98a128aSYan, Zheng le64_to_cpu(info->version) > (ci->i_version & ~1))) 719f98a128aSYan, Zheng new_version = true; 720355da1ebSSage Weil 721355da1ebSSage Weil issued = __ceph_caps_issued(ci, &implemented); 722355da1ebSSage Weil issued |= implemented | __ceph_caps_dirty(ci); 723f98a128aSYan, Zheng new_issued = ~issued & le32_to_cpu(info->cap.caps); 724355da1ebSSage Weil 725355da1ebSSage Weil /* update inode */ 726355da1ebSSage Weil ci->i_version = le64_to_cpu(info->version); 727355da1ebSSage Weil inode->i_version++; 728355da1ebSSage Weil inode->i_rdev = le32_to_cpu(info->rdev); 729f98a128aSYan, Zheng inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; 730355da1ebSSage Weil 731f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && 732f98a128aSYan, Zheng (issued & CEPH_CAP_AUTH_EXCL) == 0) { 733355da1ebSSage Weil inode->i_mode = le32_to_cpu(info->mode); 734ab871b90SEric W. Biederman inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); 735ab871b90SEric W. Biederman inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); 736355da1ebSSage Weil dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, 737bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 738bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid)); 739355da1ebSSage Weil } 740355da1ebSSage Weil 741f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && 742f98a128aSYan, Zheng (issued & CEPH_CAP_LINK_EXCL) == 0) 743bfe86848SMiklos Szeredi set_nlink(inode, le32_to_cpu(info->nlink)); 744355da1ebSSage Weil 745f98a128aSYan, Zheng if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { 746355da1ebSSage Weil /* be careful with mtime, atime, size */ 747355da1ebSSage Weil ceph_decode_timespec(&atime, &info->atime); 748355da1ebSSage Weil ceph_decode_timespec(&mtime, &info->mtime); 749355da1ebSSage Weil ceph_decode_timespec(&ctime, &info->ctime); 750f98a128aSYan, Zheng ceph_fill_file_time(inode, issued, 751f98a128aSYan, Zheng le32_to_cpu(info->time_warp_seq), 752f98a128aSYan, Zheng &ctime, &mtime, &atime); 753f98a128aSYan, Zheng } 754f98a128aSYan, Zheng 755f98a128aSYan, Zheng if (new_version || 756f98a128aSYan, Zheng (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { 75710183a69SYan, Zheng if (ci->i_layout.fl_pg_pool != info->layout.fl_pg_pool) 75810183a69SYan, Zheng ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; 759f98a128aSYan, Zheng ci->i_layout = info->layout; 7605ea5c5e0SYan, Zheng ci->i_pool_ns_len = iinfo->pool_ns_len; 76110183a69SYan, Zheng 762355da1ebSSage Weil queue_trunc = ceph_fill_file_size(inode, issued, 763355da1ebSSage Weil le32_to_cpu(info->truncate_seq), 764355da1ebSSage Weil le64_to_cpu(info->truncate_size), 765355da1ebSSage Weil le64_to_cpu(info->size)); 766f98a128aSYan, Zheng /* only update max_size on auth cap */ 767f98a128aSYan, Zheng if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 768f98a128aSYan, Zheng ci->i_max_size != le64_to_cpu(info->max_size)) { 769f98a128aSYan, Zheng dout("max_size %lld -> %llu\n", ci->i_max_size, 770f98a128aSYan, Zheng le64_to_cpu(info->max_size)); 771f98a128aSYan, Zheng ci->i_max_size = le64_to_cpu(info->max_size); 772f98a128aSYan, Zheng } 773f98a128aSYan, Zheng } 774355da1ebSSage Weil 775355da1ebSSage Weil /* xattrs */ 776355da1ebSSage Weil /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ 777508b32d8SYan, Zheng if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && 778355da1ebSSage Weil le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { 779355da1ebSSage Weil if (ci->i_xattrs.blob) 780355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 781355da1ebSSage Weil ci->i_xattrs.blob = xattr_blob; 782355da1ebSSage Weil if (xattr_blob) 783355da1ebSSage Weil memcpy(ci->i_xattrs.blob->vec.iov_base, 784355da1ebSSage Weil iinfo->xattr_data, iinfo->xattr_len); 785355da1ebSSage Weil ci->i_xattrs.version = le64_to_cpu(info->xattr_version); 7867221fe4cSGuangliang Zhao ceph_forget_all_cached_acls(inode); 787a6424e48SSage Weil xattr_blob = NULL; 788355da1ebSSage Weil } 789355da1ebSSage Weil 790355da1ebSSage Weil inode->i_mapping->a_ops = &ceph_aops; 791355da1ebSSage Weil 792355da1ebSSage Weil switch (inode->i_mode & S_IFMT) { 793355da1ebSSage Weil case S_IFIFO: 794355da1ebSSage Weil case S_IFBLK: 795355da1ebSSage Weil case S_IFCHR: 796355da1ebSSage Weil case S_IFSOCK: 797355da1ebSSage Weil init_special_inode(inode, inode->i_mode, inode->i_rdev); 798355da1ebSSage Weil inode->i_op = &ceph_file_iops; 799355da1ebSSage Weil break; 800355da1ebSSage Weil case S_IFREG: 801355da1ebSSage Weil inode->i_op = &ceph_file_iops; 802355da1ebSSage Weil inode->i_fop = &ceph_file_fops; 803355da1ebSSage Weil break; 804355da1ebSSage Weil case S_IFLNK: 805355da1ebSSage Weil inode->i_op = &ceph_symlink_iops; 806355da1ebSSage Weil if (!ci->i_symlink) { 807810339ecSXi Wang u32 symlen = iinfo->symlink_len; 808355da1ebSSage Weil char *sym; 809355da1ebSSage Weil 810be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 811355da1ebSSage Weil 812810339ecSXi Wang err = -EINVAL; 81399c88e69SYan, Zheng if (WARN_ON(symlen != i_size_read(inode))) 814810339ecSXi Wang goto out; 815810339ecSXi Wang 816355da1ebSSage Weil err = -ENOMEM; 817810339ecSXi Wang sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); 818355da1ebSSage Weil if (!sym) 819355da1ebSSage Weil goto out; 820355da1ebSSage Weil 821be655596SSage Weil spin_lock(&ci->i_ceph_lock); 822355da1ebSSage Weil if (!ci->i_symlink) 823355da1ebSSage Weil ci->i_symlink = sym; 824355da1ebSSage Weil else 825355da1ebSSage Weil kfree(sym); /* lost a race */ 826355da1ebSSage Weil } 827ac194dccSAl Viro inode->i_link = ci->i_symlink; 828355da1ebSSage Weil break; 829355da1ebSSage Weil case S_IFDIR: 830355da1ebSSage Weil inode->i_op = &ceph_dir_iops; 831355da1ebSSage Weil inode->i_fop = &ceph_dir_fops; 832355da1ebSSage Weil 83314303d20SSage Weil ci->i_dir_layout = iinfo->dir_layout; 83414303d20SSage Weil 835355da1ebSSage Weil ci->i_files = le64_to_cpu(info->files); 836355da1ebSSage Weil ci->i_subdirs = le64_to_cpu(info->subdirs); 837355da1ebSSage Weil ci->i_rbytes = le64_to_cpu(info->rbytes); 838355da1ebSSage Weil ci->i_rfiles = le64_to_cpu(info->rfiles); 839355da1ebSSage Weil ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); 840355da1ebSSage Weil ceph_decode_timespec(&ci->i_rctime, &info->rctime); 841355da1ebSSage Weil break; 842355da1ebSSage Weil default: 843355da1ebSSage Weil pr_err("fill_inode %llx.%llx BAD mode 0%o\n", 844355da1ebSSage Weil ceph_vinop(inode), inode->i_mode); 845355da1ebSSage Weil } 846355da1ebSSage Weil 847355da1ebSSage Weil /* were we issued a capability? */ 848355da1ebSSage Weil if (info->cap.caps) { 849355da1ebSSage Weil if (ceph_snap(inode) == CEPH_NOSNAP) { 8502f92b3d0SYan, Zheng unsigned caps = le32_to_cpu(info->cap.caps); 851355da1ebSSage Weil ceph_add_cap(inode, session, 852355da1ebSSage Weil le64_to_cpu(info->cap.cap_id), 8532f92b3d0SYan, Zheng cap_fmode, caps, 854355da1ebSSage Weil le32_to_cpu(info->cap.wanted), 855355da1ebSSage Weil le32_to_cpu(info->cap.seq), 856355da1ebSSage Weil le32_to_cpu(info->cap.mseq), 857355da1ebSSage Weil le64_to_cpu(info->cap.realm), 858d9df2783SYan, Zheng info->cap.flags, &new_cap); 8592f92b3d0SYan, Zheng 8602f92b3d0SYan, Zheng /* set dir completion flag? */ 8612f92b3d0SYan, Zheng if (S_ISDIR(inode->i_mode) && 8622f92b3d0SYan, Zheng ci->i_files == 0 && ci->i_subdirs == 0 && 8632f92b3d0SYan, Zheng (caps & CEPH_CAP_FILE_SHARED) && 8642f92b3d0SYan, Zheng (issued & CEPH_CAP_FILE_EXCL) == 0 && 8652f92b3d0SYan, Zheng !__ceph_dir_is_complete(ci)) { 8662f92b3d0SYan, Zheng dout(" marking %p complete (empty)\n", inode); 867fdd4e158SYan, Zheng i_size_write(inode, 0); 8682f92b3d0SYan, Zheng __ceph_dir_set_complete(ci, 869fdd4e158SYan, Zheng atomic64_read(&ci->i_release_count), 870fdd4e158SYan, Zheng atomic64_read(&ci->i_ordered_count)); 8712f92b3d0SYan, Zheng } 8722f92b3d0SYan, Zheng 873d9df2783SYan, Zheng wake = true; 874355da1ebSSage Weil } else { 875355da1ebSSage Weil dout(" %p got snap_caps %s\n", inode, 876355da1ebSSage Weil ceph_cap_string(le32_to_cpu(info->cap.caps))); 877355da1ebSSage Weil ci->i_snap_caps |= le32_to_cpu(info->cap.caps); 878355da1ebSSage Weil if (cap_fmode >= 0) 879355da1ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 880355da1ebSSage Weil } 88104d000ebSSage Weil } else if (cap_fmode >= 0) { 882f3ae1b97SFabian Frederick pr_warn("mds issued no caps on %llx.%llx\n", 88304d000ebSSage Weil ceph_vinop(inode)); 88404d000ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 885355da1ebSSage Weil } 88631c542a1SYan, Zheng 88731c542a1SYan, Zheng if (iinfo->inline_version > 0 && 88831c542a1SYan, Zheng iinfo->inline_version >= ci->i_inline_version) { 88931c542a1SYan, Zheng int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; 89031c542a1SYan, Zheng ci->i_inline_version = iinfo->inline_version; 89131c542a1SYan, Zheng if (ci->i_inline_version != CEPH_INLINE_NONE && 89201deead0SYan, Zheng (locked_page || 89301deead0SYan, Zheng (le32_to_cpu(info->cap.caps) & cache_caps))) 89431c542a1SYan, Zheng fill_inline = true; 89531c542a1SYan, Zheng } 89631c542a1SYan, Zheng 897355da1ebSSage Weil spin_unlock(&ci->i_ceph_lock); 898355da1ebSSage Weil 89931c542a1SYan, Zheng if (fill_inline) 90001deead0SYan, Zheng ceph_fill_inline_data(inode, locked_page, 90131c542a1SYan, Zheng iinfo->inline_data, iinfo->inline_len); 90231c542a1SYan, Zheng 903d9df2783SYan, Zheng if (wake) 904d9df2783SYan, Zheng wake_up_all(&ci->i_cap_wq); 905d9df2783SYan, Zheng 906355da1ebSSage Weil /* queue truncate if we saw i_size decrease */ 907355da1ebSSage Weil if (queue_trunc) 908355da1ebSSage Weil ceph_queue_vmtruncate(inode); 909355da1ebSSage Weil 910355da1ebSSage Weil /* populate frag tree */ 9113e7fbe9cSYan, Zheng if (S_ISDIR(inode->i_mode)) 9123e7fbe9cSYan, Zheng ceph_fill_fragtree(inode, &info->fragtree, dirinfo); 913355da1ebSSage Weil 914355da1ebSSage Weil /* update delegation info? */ 915355da1ebSSage Weil if (dirinfo) 916355da1ebSSage Weil ceph_fill_dirfrag(inode, dirinfo); 917355da1ebSSage Weil 918355da1ebSSage Weil err = 0; 919355da1ebSSage Weil out: 920d9df2783SYan, Zheng if (new_cap) 921d9df2783SYan, Zheng ceph_put_cap(mdsc, new_cap); 922b6c1d5b8SSage Weil if (xattr_blob) 923355da1ebSSage Weil ceph_buffer_put(xattr_blob); 924355da1ebSSage Weil return err; 925355da1ebSSage Weil } 926355da1ebSSage Weil 927355da1ebSSage Weil /* 928355da1ebSSage Weil * caller should hold session s_mutex. 929355da1ebSSage Weil */ 930355da1ebSSage Weil static void update_dentry_lease(struct dentry *dentry, 931355da1ebSSage Weil struct ceph_mds_reply_lease *lease, 932355da1ebSSage Weil struct ceph_mds_session *session, 933355da1ebSSage Weil unsigned long from_time) 934355da1ebSSage Weil { 935355da1ebSSage Weil struct ceph_dentry_info *di = ceph_dentry(dentry); 936355da1ebSSage Weil long unsigned duration = le32_to_cpu(lease->duration_ms); 937355da1ebSSage Weil long unsigned ttl = from_time + (duration * HZ) / 1000; 938355da1ebSSage Weil long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; 939355da1ebSSage Weil struct inode *dir; 940355da1ebSSage Weil 941355da1ebSSage Weil /* only track leases on regular dentries */ 942355da1ebSSage Weil if (dentry->d_op != &ceph_dentry_ops) 943355da1ebSSage Weil return; 944355da1ebSSage Weil 945355da1ebSSage Weil spin_lock(&dentry->d_lock); 9462f90b852SSage Weil dout("update_dentry_lease %p duration %lu ms ttl %lu\n", 9472f90b852SSage Weil dentry, duration, ttl); 948355da1ebSSage Weil 949355da1ebSSage Weil /* make lease_rdcache_gen match directory */ 9502b0143b5SDavid Howells dir = d_inode(dentry->d_parent); 951355da1ebSSage Weil di->lease_shared_gen = ceph_inode(dir)->i_shared_gen; 952355da1ebSSage Weil 9532f90b852SSage Weil if (duration == 0) 954355da1ebSSage Weil goto out_unlock; 955355da1ebSSage Weil 956355da1ebSSage Weil if (di->lease_gen == session->s_cap_gen && 957355da1ebSSage Weil time_before(ttl, dentry->d_time)) 958355da1ebSSage Weil goto out_unlock; /* we already have a newer lease. */ 959355da1ebSSage Weil 960355da1ebSSage Weil if (di->lease_session && di->lease_session != session) 961355da1ebSSage Weil goto out_unlock; 962355da1ebSSage Weil 963355da1ebSSage Weil ceph_dentry_lru_touch(dentry); 964355da1ebSSage Weil 965355da1ebSSage Weil if (!di->lease_session) 966355da1ebSSage Weil di->lease_session = ceph_get_mds_session(session); 967355da1ebSSage Weil di->lease_gen = session->s_cap_gen; 968355da1ebSSage Weil di->lease_seq = le32_to_cpu(lease->seq); 969355da1ebSSage Weil di->lease_renew_after = half_ttl; 970355da1ebSSage Weil di->lease_renew_from = 0; 971355da1ebSSage Weil dentry->d_time = ttl; 972355da1ebSSage Weil out_unlock: 973355da1ebSSage Weil spin_unlock(&dentry->d_lock); 974355da1ebSSage Weil return; 975355da1ebSSage Weil } 976355da1ebSSage Weil 977355da1ebSSage Weil /* 9781cd3935bSSage Weil * splice a dentry to an inode. 9791cd3935bSSage Weil * caller must hold directory i_mutex for this to be safe. 9801cd3935bSSage Weil */ 981f7380af0SAl Viro static struct dentry *splice_dentry(struct dentry *dn, struct inode *in) 9821cd3935bSSage Weil { 9831cd3935bSSage Weil struct dentry *realdn; 9841cd3935bSSage Weil 9852b0143b5SDavid Howells BUG_ON(d_inode(dn)); 9861cd3935bSSage Weil 9871cd3935bSSage Weil /* dn must be unhashed */ 9881cd3935bSSage Weil if (!d_unhashed(dn)) 9891cd3935bSSage Weil d_drop(dn); 99041d28bcaSAl Viro realdn = d_splice_alias(in, dn); 9911cd3935bSSage Weil if (IS_ERR(realdn)) { 992d69ed05aSSage Weil pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", 993d69ed05aSSage Weil PTR_ERR(realdn), dn, in, ceph_vinop(in)); 9941cd3935bSSage Weil dn = realdn; /* note realdn contains the error */ 9951cd3935bSSage Weil goto out; 9961cd3935bSSage Weil } else if (realdn) { 9971cd3935bSSage Weil dout("dn %p (%d) spliced with %p (%d) " 9981cd3935bSSage Weil "inode %p ino %llx.%llx\n", 99984d08fa8SAl Viro dn, d_count(dn), 100084d08fa8SAl Viro realdn, d_count(realdn), 10012b0143b5SDavid Howells d_inode(realdn), ceph_vinop(d_inode(realdn))); 10021cd3935bSSage Weil dput(dn); 10031cd3935bSSage Weil dn = realdn; 10041cd3935bSSage Weil } else { 10051cd3935bSSage Weil BUG_ON(!ceph_dentry(dn)); 10061cd3935bSSage Weil dout("dn %p attached to %p ino %llx.%llx\n", 10072b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn))); 10081cd3935bSSage Weil } 10091cd3935bSSage Weil out: 10101cd3935bSSage Weil return dn; 10111cd3935bSSage Weil } 10121cd3935bSSage Weil 10131cd3935bSSage Weil /* 1014355da1ebSSage Weil * Incorporate results into the local cache. This is either just 1015355da1ebSSage Weil * one inode, or a directory, dentry, and possibly linked-to inode (e.g., 1016355da1ebSSage Weil * after a lookup). 1017355da1ebSSage Weil * 1018355da1ebSSage Weil * A reply may contain 1019355da1ebSSage Weil * a directory inode along with a dentry. 1020355da1ebSSage Weil * and/or a target inode 1021355da1ebSSage Weil * 1022355da1ebSSage Weil * Called with snap_rwsem (read). 1023355da1ebSSage Weil */ 1024355da1ebSSage Weil int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, 1025355da1ebSSage Weil struct ceph_mds_session *session) 1026355da1ebSSage Weil { 1027355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1028355da1ebSSage Weil struct inode *in = NULL; 1029355da1ebSSage Weil struct ceph_vino vino; 10303d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(sb); 1031355da1ebSSage Weil int err = 0; 1032355da1ebSSage Weil 1033355da1ebSSage Weil dout("fill_trace %p is_dentry %d is_target %d\n", req, 1034355da1ebSSage Weil rinfo->head->is_dentry, rinfo->head->is_target); 1035355da1ebSSage Weil 1036355da1ebSSage Weil #if 0 1037355da1ebSSage Weil /* 1038355da1ebSSage Weil * Debugging hook: 1039355da1ebSSage Weil * 1040355da1ebSSage Weil * If we resend completed ops to a recovering mds, we get no 1041355da1ebSSage Weil * trace. Since that is very rare, pretend this is the case 1042355da1ebSSage Weil * to ensure the 'no trace' handlers in the callers behave. 1043355da1ebSSage Weil * 1044355da1ebSSage Weil * Fill in inodes unconditionally to avoid breaking cap 1045355da1ebSSage Weil * invariants. 1046355da1ebSSage Weil */ 1047355da1ebSSage Weil if (rinfo->head->op & CEPH_MDS_OP_WRITE) { 1048355da1ebSSage Weil pr_info("fill_trace faking empty trace on %lld %s\n", 1049355da1ebSSage Weil req->r_tid, ceph_mds_op_name(rinfo->head->op)); 1050355da1ebSSage Weil if (rinfo->head->is_dentry) { 1051355da1ebSSage Weil rinfo->head->is_dentry = 0; 1052355da1ebSSage Weil err = fill_inode(req->r_locked_dir, 1053355da1ebSSage Weil &rinfo->diri, rinfo->dirfrag, 1054355da1ebSSage Weil session, req->r_request_started, -1); 1055355da1ebSSage Weil } 1056355da1ebSSage Weil if (rinfo->head->is_target) { 1057355da1ebSSage Weil rinfo->head->is_target = 0; 1058355da1ebSSage Weil ininfo = rinfo->targeti.in; 1059355da1ebSSage Weil vino.ino = le64_to_cpu(ininfo->ino); 1060355da1ebSSage Weil vino.snap = le64_to_cpu(ininfo->snapid); 1061355da1ebSSage Weil in = ceph_get_inode(sb, vino); 1062355da1ebSSage Weil err = fill_inode(in, &rinfo->targeti, NULL, 1063355da1ebSSage Weil session, req->r_request_started, 1064355da1ebSSage Weil req->r_fmode); 1065355da1ebSSage Weil iput(in); 1066355da1ebSSage Weil } 1067355da1ebSSage Weil } 1068355da1ebSSage Weil #endif 1069355da1ebSSage Weil 1070355da1ebSSage Weil if (!rinfo->head->is_target && !rinfo->head->is_dentry) { 1071355da1ebSSage Weil dout("fill_trace reply is empty!\n"); 1072167c9e35SSage Weil if (rinfo->head->result == 0 && req->r_locked_dir) 1073167c9e35SSage Weil ceph_invalidate_dir_request(req); 1074355da1ebSSage Weil return 0; 1075355da1ebSSage Weil } 1076355da1ebSSage Weil 1077355da1ebSSage Weil if (rinfo->head->is_dentry) { 10785b1daecdSSage Weil struct inode *dir = req->r_locked_dir; 10795b1daecdSSage Weil 10806c5e50faSSage Weil if (dir) { 108101deead0SYan, Zheng err = fill_inode(dir, NULL, 108201deead0SYan, Zheng &rinfo->diri, rinfo->dirfrag, 10835b1daecdSSage Weil session, req->r_request_started, -1, 10845b1daecdSSage Weil &req->r_caps_reservation); 10855b1daecdSSage Weil if (err < 0) 108619913b4eSYan, Zheng goto done; 10876c5e50faSSage Weil } else { 10886c5e50faSSage Weil WARN_ON_ONCE(1); 10896c5e50faSSage Weil } 109019913b4eSYan, Zheng 109119913b4eSYan, Zheng if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) { 109219913b4eSYan, Zheng struct qstr dname; 109319913b4eSYan, Zheng struct dentry *dn, *parent; 109419913b4eSYan, Zheng 109519913b4eSYan, Zheng BUG_ON(!rinfo->head->is_target); 109619913b4eSYan, Zheng BUG_ON(req->r_dentry); 109719913b4eSYan, Zheng 109819913b4eSYan, Zheng parent = d_find_any_alias(dir); 109919913b4eSYan, Zheng BUG_ON(!parent); 110019913b4eSYan, Zheng 110119913b4eSYan, Zheng dname.name = rinfo->dname; 110219913b4eSYan, Zheng dname.len = rinfo->dname_len; 110319913b4eSYan, Zheng dname.hash = full_name_hash(dname.name, dname.len); 110419913b4eSYan, Zheng vino.ino = le64_to_cpu(rinfo->targeti.in->ino); 110519913b4eSYan, Zheng vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 110619913b4eSYan, Zheng retry_lookup: 110719913b4eSYan, Zheng dn = d_lookup(parent, &dname); 110819913b4eSYan, Zheng dout("d_lookup on parent=%p name=%.*s got %p\n", 110919913b4eSYan, Zheng parent, dname.len, dname.name, dn); 111019913b4eSYan, Zheng 111119913b4eSYan, Zheng if (!dn) { 111219913b4eSYan, Zheng dn = d_alloc(parent, &dname); 111319913b4eSYan, Zheng dout("d_alloc %p '%.*s' = %p\n", parent, 111419913b4eSYan, Zheng dname.len, dname.name, dn); 111519913b4eSYan, Zheng if (dn == NULL) { 111619913b4eSYan, Zheng dput(parent); 111719913b4eSYan, Zheng err = -ENOMEM; 111819913b4eSYan, Zheng goto done; 111919913b4eSYan, Zheng } 112019913b4eSYan, Zheng err = ceph_init_dentry(dn); 112119913b4eSYan, Zheng if (err < 0) { 112219913b4eSYan, Zheng dput(dn); 112319913b4eSYan, Zheng dput(parent); 112419913b4eSYan, Zheng goto done; 112519913b4eSYan, Zheng } 11262b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 11272b0143b5SDavid Howells (ceph_ino(d_inode(dn)) != vino.ino || 11282b0143b5SDavid Howells ceph_snap(d_inode(dn)) != vino.snap)) { 112919913b4eSYan, Zheng dout(" dn %p points to wrong inode %p\n", 11302b0143b5SDavid Howells dn, d_inode(dn)); 113119913b4eSYan, Zheng d_delete(dn); 113219913b4eSYan, Zheng dput(dn); 113319913b4eSYan, Zheng goto retry_lookup; 113419913b4eSYan, Zheng } 113519913b4eSYan, Zheng 113619913b4eSYan, Zheng req->r_dentry = dn; 113719913b4eSYan, Zheng dput(parent); 113819913b4eSYan, Zheng } 11395b1daecdSSage Weil } 11405b1daecdSSage Weil 114186b58d13SYan, Zheng if (rinfo->head->is_target) { 114286b58d13SYan, Zheng vino.ino = le64_to_cpu(rinfo->targeti.in->ino); 114386b58d13SYan, Zheng vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 114486b58d13SYan, Zheng 114586b58d13SYan, Zheng in = ceph_get_inode(sb, vino); 114686b58d13SYan, Zheng if (IS_ERR(in)) { 114786b58d13SYan, Zheng err = PTR_ERR(in); 114886b58d13SYan, Zheng goto done; 114986b58d13SYan, Zheng } 115086b58d13SYan, Zheng req->r_target_inode = in; 115186b58d13SYan, Zheng 115201deead0SYan, Zheng err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL, 115386b58d13SYan, Zheng session, req->r_request_started, 115448193012SYan, Zheng (!req->r_aborted && rinfo->head->result == 0) ? 115586b58d13SYan, Zheng req->r_fmode : -1, 115686b58d13SYan, Zheng &req->r_caps_reservation); 115786b58d13SYan, Zheng if (err < 0) { 115886b58d13SYan, Zheng pr_err("fill_inode badness %p %llx.%llx\n", 115986b58d13SYan, Zheng in, ceph_vinop(in)); 116086b58d13SYan, Zheng goto done; 116186b58d13SYan, Zheng } 116286b58d13SYan, Zheng } 116386b58d13SYan, Zheng 11649358c6d4SSage Weil /* 11659358c6d4SSage Weil * ignore null lease/binding on snapdir ENOENT, or else we 11669358c6d4SSage Weil * will have trouble splicing in the virtual snapdir later 11679358c6d4SSage Weil */ 11689358c6d4SSage Weil if (rinfo->head->is_dentry && !req->r_aborted && 11696c5e50faSSage Weil req->r_locked_dir && 11709358c6d4SSage Weil (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, 11713d14c5d2SYehuda Sadeh fsc->mount_options->snapdir_name, 11729358c6d4SSage Weil req->r_dentry->d_name.len))) { 1173355da1ebSSage Weil /* 1174355da1ebSSage Weil * lookup link rename : null -> possibly existing inode 1175355da1ebSSage Weil * mknod symlink mkdir : null -> new inode 1176355da1ebSSage Weil * unlink : linked -> null 1177355da1ebSSage Weil */ 1178355da1ebSSage Weil struct inode *dir = req->r_locked_dir; 1179355da1ebSSage Weil struct dentry *dn = req->r_dentry; 1180355da1ebSSage Weil bool have_dir_cap, have_lease; 1181355da1ebSSage Weil 1182355da1ebSSage Weil BUG_ON(!dn); 1183355da1ebSSage Weil BUG_ON(!dir); 11842b0143b5SDavid Howells BUG_ON(d_inode(dn->d_parent) != dir); 1185355da1ebSSage Weil BUG_ON(ceph_ino(dir) != 1186355da1ebSSage Weil le64_to_cpu(rinfo->diri.in->ino)); 1187355da1ebSSage Weil BUG_ON(ceph_snap(dir) != 1188355da1ebSSage Weil le64_to_cpu(rinfo->diri.in->snapid)); 1189355da1ebSSage Weil 1190355da1ebSSage Weil /* do we have a lease on the whole dir? */ 1191355da1ebSSage Weil have_dir_cap = 1192355da1ebSSage Weil (le32_to_cpu(rinfo->diri.in->cap.caps) & 1193355da1ebSSage Weil CEPH_CAP_FILE_SHARED); 1194355da1ebSSage Weil 1195355da1ebSSage Weil /* do we have a dn lease? */ 1196355da1ebSSage Weil have_lease = have_dir_cap || 11972f90b852SSage Weil le32_to_cpu(rinfo->dlease->duration_ms); 1198355da1ebSSage Weil if (!have_lease) 1199355da1ebSSage Weil dout("fill_trace no dentry lease or dir cap\n"); 1200355da1ebSSage Weil 1201355da1ebSSage Weil /* rename? */ 1202355da1ebSSage Weil if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { 12030a8a70f9SYan, Zheng struct inode *olddir = req->r_old_dentry_dir; 12040a8a70f9SYan, Zheng BUG_ON(!olddir); 12050a8a70f9SYan, Zheng 1206a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1207355da1ebSSage Weil req->r_old_dentry, 1208a455589fSAl Viro req->r_old_dentry, 1209a455589fSAl Viro dn, dn); 1210355da1ebSSage Weil dout("fill_trace doing d_move %p -> %p\n", 1211355da1ebSSage Weil req->r_old_dentry, dn); 1212c10f5e12SSage Weil 1213fdd4e158SYan, Zheng /* d_move screws up sibling dentries' offsets */ 1214fdd4e158SYan, Zheng ceph_dir_clear_ordered(dir); 1215fdd4e158SYan, Zheng ceph_dir_clear_ordered(olddir); 1216fdd4e158SYan, Zheng 1217355da1ebSSage Weil d_move(req->r_old_dentry, dn); 1218a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1219355da1ebSSage Weil req->r_old_dentry, 1220a455589fSAl Viro req->r_old_dentry, 1221a455589fSAl Viro dn, dn); 122281a6cf2dSSage Weil 1223c4a29f26SSage Weil /* ensure target dentry is invalidated, despite 1224c4a29f26SSage Weil rehashing bug in vfs_rename_dir */ 122581a6cf2dSSage Weil ceph_invalidate_dentry_lease(dn); 122681a6cf2dSSage Weil 122709adc80cSSage Weil dout("dn %p gets new offset %lld\n", req->r_old_dentry, 12281cd3935bSSage Weil ceph_dentry(req->r_old_dentry)->offset); 122981a6cf2dSSage Weil 1230355da1ebSSage Weil dn = req->r_old_dentry; /* use old_dentry */ 1231355da1ebSSage Weil } 1232355da1ebSSage Weil 1233355da1ebSSage Weil /* null dentry? */ 1234355da1ebSSage Weil if (!rinfo->head->is_target) { 1235355da1ebSSage Weil dout("fill_trace null dentry\n"); 12362b0143b5SDavid Howells if (d_really_is_positive(dn)) { 123770db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 1238355da1ebSSage Weil dout("d_delete %p\n", dn); 1239355da1ebSSage Weil d_delete(dn); 1240355da1ebSSage Weil } else { 1241355da1ebSSage Weil if (have_lease && d_unhashed(dn)) 1242f8b31710SAl Viro d_add(dn, NULL); 1243355da1ebSSage Weil update_dentry_lease(dn, rinfo->dlease, 1244355da1ebSSage Weil session, 1245355da1ebSSage Weil req->r_request_started); 1246355da1ebSSage Weil } 1247355da1ebSSage Weil goto done; 1248355da1ebSSage Weil } 1249355da1ebSSage Weil 1250355da1ebSSage Weil /* attach proper inode */ 12512b0143b5SDavid Howells if (d_really_is_negative(dn)) { 125270db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 125386b58d13SYan, Zheng ihold(in); 1254f7380af0SAl Viro dn = splice_dentry(dn, in); 1255355da1ebSSage Weil if (IS_ERR(dn)) { 1256355da1ebSSage Weil err = PTR_ERR(dn); 1257355da1ebSSage Weil goto done; 1258355da1ebSSage Weil } 1259355da1ebSSage Weil req->r_dentry = dn; /* may have spliced */ 12602b0143b5SDavid Howells } else if (d_really_is_positive(dn) && d_inode(dn) != in) { 1261355da1ebSSage Weil dout(" %p links to %p %llx.%llx, not %llx.%llx\n", 12622b0143b5SDavid Howells dn, d_inode(dn), ceph_vinop(d_inode(dn)), 126386b58d13SYan, Zheng ceph_vinop(in)); 1264355da1ebSSage Weil have_lease = false; 1265355da1ebSSage Weil } 1266355da1ebSSage Weil 1267355da1ebSSage Weil if (have_lease) 1268355da1ebSSage Weil update_dentry_lease(dn, rinfo->dlease, session, 1269355da1ebSSage Weil req->r_request_started); 1270355da1ebSSage Weil dout(" final dn %p\n", dn); 127186b58d13SYan, Zheng } else if (!req->r_aborted && 127286b58d13SYan, Zheng (req->r_op == CEPH_MDS_OP_LOOKUPSNAP || 127386b58d13SYan, Zheng req->r_op == CEPH_MDS_OP_MKSNAP)) { 1274355da1ebSSage Weil struct dentry *dn = req->r_dentry; 12750a8a70f9SYan, Zheng struct inode *dir = req->r_locked_dir; 1276355da1ebSSage Weil 1277355da1ebSSage Weil /* fill out a snapdir LOOKUPSNAP dentry */ 1278355da1ebSSage Weil BUG_ON(!dn); 12790a8a70f9SYan, Zheng BUG_ON(!dir); 12800a8a70f9SYan, Zheng BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); 1281355da1ebSSage Weil dout(" linking snapped dir %p to dn %p\n", in, dn); 128270db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 128386b58d13SYan, Zheng ihold(in); 1284f7380af0SAl Viro dn = splice_dentry(dn, in); 1285355da1ebSSage Weil if (IS_ERR(dn)) { 1286355da1ebSSage Weil err = PTR_ERR(dn); 1287355da1ebSSage Weil goto done; 1288355da1ebSSage Weil } 1289355da1ebSSage Weil req->r_dentry = dn; /* may have spliced */ 1290355da1ebSSage Weil } 1291355da1ebSSage Weil done: 1292355da1ebSSage Weil dout("fill_trace done err=%d\n", err); 1293355da1ebSSage Weil return err; 1294355da1ebSSage Weil } 1295355da1ebSSage Weil 1296355da1ebSSage Weil /* 1297355da1ebSSage Weil * Prepopulate our cache with readdir results, leases, etc. 1298355da1ebSSage Weil */ 129979f9f99aSSage Weil static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, 130079f9f99aSSage Weil struct ceph_mds_session *session) 130179f9f99aSSage Weil { 130279f9f99aSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 130379f9f99aSSage Weil int i, err = 0; 130479f9f99aSSage Weil 130579f9f99aSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 130679f9f99aSSage Weil struct ceph_vino vino; 130779f9f99aSSage Weil struct inode *in; 130879f9f99aSSage Weil int rc; 130979f9f99aSSage Weil 131079f9f99aSSage Weil vino.ino = le64_to_cpu(rinfo->dir_in[i].in->ino); 131179f9f99aSSage Weil vino.snap = le64_to_cpu(rinfo->dir_in[i].in->snapid); 131279f9f99aSSage Weil 131379f9f99aSSage Weil in = ceph_get_inode(req->r_dentry->d_sb, vino); 131479f9f99aSSage Weil if (IS_ERR(in)) { 131579f9f99aSSage Weil err = PTR_ERR(in); 131679f9f99aSSage Weil dout("new_inode badness got %d\n", err); 131779f9f99aSSage Weil continue; 131879f9f99aSSage Weil } 131901deead0SYan, Zheng rc = fill_inode(in, NULL, &rinfo->dir_in[i], NULL, session, 132079f9f99aSSage Weil req->r_request_started, -1, 132179f9f99aSSage Weil &req->r_caps_reservation); 132279f9f99aSSage Weil if (rc < 0) { 132379f9f99aSSage Weil pr_err("fill_inode badness on %p got %d\n", in, rc); 132479f9f99aSSage Weil err = rc; 132579f9f99aSSage Weil continue; 132679f9f99aSSage Weil } 132779f9f99aSSage Weil } 132879f9f99aSSage Weil 132979f9f99aSSage Weil return err; 133079f9f99aSSage Weil } 133179f9f99aSSage Weil 1332fdd4e158SYan, Zheng void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) 1333fdd4e158SYan, Zheng { 1334fdd4e158SYan, Zheng if (ctl->page) { 1335fdd4e158SYan, Zheng kunmap(ctl->page); 1336fdd4e158SYan, Zheng page_cache_release(ctl->page); 1337fdd4e158SYan, Zheng ctl->page = NULL; 1338fdd4e158SYan, Zheng } 1339fdd4e158SYan, Zheng } 1340fdd4e158SYan, Zheng 1341fdd4e158SYan, Zheng static int fill_readdir_cache(struct inode *dir, struct dentry *dn, 1342fdd4e158SYan, Zheng struct ceph_readdir_cache_control *ctl, 1343fdd4e158SYan, Zheng struct ceph_mds_request *req) 1344fdd4e158SYan, Zheng { 1345fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(dir); 1346fdd4e158SYan, Zheng unsigned nsize = PAGE_CACHE_SIZE / sizeof(struct dentry*); 1347fdd4e158SYan, Zheng unsigned idx = ctl->index % nsize; 1348fdd4e158SYan, Zheng pgoff_t pgoff = ctl->index / nsize; 1349fdd4e158SYan, Zheng 1350fdd4e158SYan, Zheng if (!ctl->page || pgoff != page_index(ctl->page)) { 1351fdd4e158SYan, Zheng ceph_readdir_cache_release(ctl); 1352af5e5eb5SYan, Zheng if (idx == 0) 1353fdd4e158SYan, Zheng ctl->page = grab_cache_page(&dir->i_data, pgoff); 1354af5e5eb5SYan, Zheng else 1355af5e5eb5SYan, Zheng ctl->page = find_lock_page(&dir->i_data, pgoff); 1356fdd4e158SYan, Zheng if (!ctl->page) { 1357fdd4e158SYan, Zheng ctl->index = -1; 1358af5e5eb5SYan, Zheng return idx == 0 ? -ENOMEM : 0; 1359fdd4e158SYan, Zheng } 1360fdd4e158SYan, Zheng /* reading/filling the cache are serialized by 1361fdd4e158SYan, Zheng * i_mutex, no need to use page lock */ 1362fdd4e158SYan, Zheng unlock_page(ctl->page); 1363fdd4e158SYan, Zheng ctl->dentries = kmap(ctl->page); 1364af5e5eb5SYan, Zheng if (idx == 0) 1365af5e5eb5SYan, Zheng memset(ctl->dentries, 0, PAGE_CACHE_SIZE); 1366fdd4e158SYan, Zheng } 1367fdd4e158SYan, Zheng 1368fdd4e158SYan, Zheng if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && 1369fdd4e158SYan, Zheng req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { 1370fdd4e158SYan, Zheng dout("readdir cache dn %p idx %d\n", dn, ctl->index); 1371fdd4e158SYan, Zheng ctl->dentries[idx] = dn; 1372fdd4e158SYan, Zheng ctl->index++; 1373fdd4e158SYan, Zheng } else { 1374fdd4e158SYan, Zheng dout("disable readdir cache\n"); 1375fdd4e158SYan, Zheng ctl->index = -1; 1376fdd4e158SYan, Zheng } 1377fdd4e158SYan, Zheng return 0; 1378fdd4e158SYan, Zheng } 1379fdd4e158SYan, Zheng 1380355da1ebSSage Weil int ceph_readdir_prepopulate(struct ceph_mds_request *req, 1381355da1ebSSage Weil struct ceph_mds_session *session) 1382355da1ebSSage Weil { 1383355da1ebSSage Weil struct dentry *parent = req->r_dentry; 1384355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1385355da1ebSSage Weil struct qstr dname; 1386355da1ebSSage Weil struct dentry *dn; 1387355da1ebSSage Weil struct inode *in; 138886b58d13SYan, Zheng int err = 0, ret, i; 1389355da1ebSSage Weil struct inode *snapdir = NULL; 1390355da1ebSSage Weil struct ceph_mds_request_head *rhead = req->r_request->front.iov_base; 1391355da1ebSSage Weil struct ceph_dentry_info *di; 139281c6aea5SYan, Zheng u32 frag = le32_to_cpu(rhead->args.readdir.frag); 1393fdd4e158SYan, Zheng struct ceph_readdir_cache_control cache_ctl = {}; 1394fdd4e158SYan, Zheng 1395fdd4e158SYan, Zheng if (req->r_aborted) 1396fdd4e158SYan, Zheng return readdir_prepopulate_inodes_only(req, session); 139781c6aea5SYan, Zheng 139881c6aea5SYan, Zheng if (rinfo->dir_dir && 139981c6aea5SYan, Zheng le32_to_cpu(rinfo->dir_dir->frag) != frag) { 140081c6aea5SYan, Zheng dout("readdir_prepopulate got new frag %x -> %x\n", 140181c6aea5SYan, Zheng frag, le32_to_cpu(rinfo->dir_dir->frag)); 140281c6aea5SYan, Zheng frag = le32_to_cpu(rinfo->dir_dir->frag); 140381c6aea5SYan, Zheng if (ceph_frag_is_leftmost(frag)) 1404fdd4e158SYan, Zheng req->r_readdir_offset = 2; 140581c6aea5SYan, Zheng else 1406fdd4e158SYan, Zheng req->r_readdir_offset = 0; 140781c6aea5SYan, Zheng } 1408355da1ebSSage Weil 1409355da1ebSSage Weil if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { 14102b0143b5SDavid Howells snapdir = ceph_get_snapdir(d_inode(parent)); 1411355da1ebSSage Weil parent = d_find_alias(snapdir); 1412355da1ebSSage Weil dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", 1413355da1ebSSage Weil rinfo->dir_nr, parent); 1414355da1ebSSage Weil } else { 1415355da1ebSSage Weil dout("readdir_prepopulate %d items under dn %p\n", 1416355da1ebSSage Weil rinfo->dir_nr, parent); 1417355da1ebSSage Weil if (rinfo->dir_dir) 14182b0143b5SDavid Howells ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); 1419355da1ebSSage Weil } 1420355da1ebSSage Weil 1421fdd4e158SYan, Zheng if (ceph_frag_is_leftmost(frag) && req->r_readdir_offset == 2) { 1422fdd4e158SYan, Zheng /* note dir version at start of readdir so we can tell 1423fdd4e158SYan, Zheng * if any dentries get dropped */ 1424fdd4e158SYan, Zheng struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); 1425fdd4e158SYan, Zheng req->r_dir_release_cnt = atomic64_read(&ci->i_release_count); 1426fdd4e158SYan, Zheng req->r_dir_ordered_cnt = atomic64_read(&ci->i_ordered_count); 1427fdd4e158SYan, Zheng req->r_readdir_cache_idx = 0; 1428fdd4e158SYan, Zheng } 1429fdd4e158SYan, Zheng 1430fdd4e158SYan, Zheng cache_ctl.index = req->r_readdir_cache_idx; 1431fdd4e158SYan, Zheng 143286b58d13SYan, Zheng /* FIXME: release caps/leases if error occurs */ 1433355da1ebSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 1434355da1ebSSage Weil struct ceph_vino vino; 1435355da1ebSSage Weil 1436355da1ebSSage Weil dname.name = rinfo->dir_dname[i]; 1437355da1ebSSage Weil dname.len = rinfo->dir_dname_len[i]; 1438355da1ebSSage Weil dname.hash = full_name_hash(dname.name, dname.len); 1439355da1ebSSage Weil 1440355da1ebSSage Weil vino.ino = le64_to_cpu(rinfo->dir_in[i].in->ino); 1441355da1ebSSage Weil vino.snap = le64_to_cpu(rinfo->dir_in[i].in->snapid); 1442355da1ebSSage Weil 1443355da1ebSSage Weil retry_lookup: 1444355da1ebSSage Weil dn = d_lookup(parent, &dname); 1445355da1ebSSage Weil dout("d_lookup on parent=%p name=%.*s got %p\n", 1446355da1ebSSage Weil parent, dname.len, dname.name, dn); 1447355da1ebSSage Weil 1448355da1ebSSage Weil if (!dn) { 1449355da1ebSSage Weil dn = d_alloc(parent, &dname); 1450355da1ebSSage Weil dout("d_alloc %p '%.*s' = %p\n", parent, 1451355da1ebSSage Weil dname.len, dname.name, dn); 1452355da1ebSSage Weil if (dn == NULL) { 1453355da1ebSSage Weil dout("d_alloc badness\n"); 1454355da1ebSSage Weil err = -ENOMEM; 1455355da1ebSSage Weil goto out; 1456355da1ebSSage Weil } 145786b58d13SYan, Zheng ret = ceph_init_dentry(dn); 145886b58d13SYan, Zheng if (ret < 0) { 14598c696737SSage Weil dput(dn); 146086b58d13SYan, Zheng err = ret; 1461355da1ebSSage Weil goto out; 14628c696737SSage Weil } 14632b0143b5SDavid Howells } else if (d_really_is_positive(dn) && 14642b0143b5SDavid Howells (ceph_ino(d_inode(dn)) != vino.ino || 14652b0143b5SDavid Howells ceph_snap(d_inode(dn)) != vino.snap)) { 1466355da1ebSSage Weil dout(" dn %p points to wrong inode %p\n", 14672b0143b5SDavid Howells dn, d_inode(dn)); 1468355da1ebSSage Weil d_delete(dn); 1469355da1ebSSage Weil dput(dn); 1470355da1ebSSage Weil goto retry_lookup; 1471355da1ebSSage Weil } 1472355da1ebSSage Weil 1473355da1ebSSage Weil /* inode */ 14742b0143b5SDavid Howells if (d_really_is_positive(dn)) { 14752b0143b5SDavid Howells in = d_inode(dn); 1476355da1ebSSage Weil } else { 1477355da1ebSSage Weil in = ceph_get_inode(parent->d_sb, vino); 1478ac1f12efSDan Carpenter if (IS_ERR(in)) { 1479355da1ebSSage Weil dout("new_inode badness\n"); 14802744c171SAl Viro d_drop(dn); 1481355da1ebSSage Weil dput(dn); 1482ac1f12efSDan Carpenter err = PTR_ERR(in); 1483355da1ebSSage Weil goto out; 1484355da1ebSSage Weil } 1485355da1ebSSage Weil } 1486355da1ebSSage Weil 1487fdd4e158SYan, Zheng ret = fill_inode(in, NULL, &rinfo->dir_in[i], NULL, session, 1488355da1ebSSage Weil req->r_request_started, -1, 1489fdd4e158SYan, Zheng &req->r_caps_reservation); 1490fdd4e158SYan, Zheng if (ret < 0) { 1491355da1ebSSage Weil pr_err("fill_inode badness on %p\n", in); 14922b0143b5SDavid Howells if (d_really_is_negative(dn)) 149386b58d13SYan, Zheng iput(in); 149486b58d13SYan, Zheng d_drop(dn); 1495fdd4e158SYan, Zheng err = ret; 1496d69ed05aSSage Weil goto next_item; 1497355da1ebSSage Weil } 149886b58d13SYan, Zheng 14992b0143b5SDavid Howells if (d_really_is_negative(dn)) { 1500f7380af0SAl Viro struct dentry *realdn = splice_dentry(dn, in); 15015cba372cSYan, Zheng if (IS_ERR(realdn)) { 15025cba372cSYan, Zheng err = PTR_ERR(realdn); 15035cba372cSYan, Zheng d_drop(dn); 150486b58d13SYan, Zheng dn = NULL; 150586b58d13SYan, Zheng goto next_item; 150686b58d13SYan, Zheng } 15075cba372cSYan, Zheng dn = realdn; 150886b58d13SYan, Zheng } 150986b58d13SYan, Zheng 151086b58d13SYan, Zheng di = dn->d_fsdata; 1511fdd4e158SYan, Zheng di->offset = ceph_make_fpos(frag, i + req->r_readdir_offset); 151286b58d13SYan, Zheng 1513355da1ebSSage Weil update_dentry_lease(dn, rinfo->dir_dlease[i], 1514d69ed05aSSage Weil req->r_session, 1515d69ed05aSSage Weil req->r_request_started); 1516fdd4e158SYan, Zheng 1517fdd4e158SYan, Zheng if (err == 0 && cache_ctl.index >= 0) { 1518fdd4e158SYan, Zheng ret = fill_readdir_cache(d_inode(parent), dn, 1519fdd4e158SYan, Zheng &cache_ctl, req); 1520fdd4e158SYan, Zheng if (ret < 0) 1521fdd4e158SYan, Zheng err = ret; 1522fdd4e158SYan, Zheng } 1523d69ed05aSSage Weil next_item: 1524d69ed05aSSage Weil if (dn) 1525355da1ebSSage Weil dput(dn); 1526355da1ebSSage Weil } 1527355da1ebSSage Weil out: 1528fdd4e158SYan, Zheng if (err == 0) { 1529fdd4e158SYan, Zheng req->r_did_prepopulate = true; 1530fdd4e158SYan, Zheng req->r_readdir_cache_idx = cache_ctl.index; 1531fdd4e158SYan, Zheng } 1532fdd4e158SYan, Zheng ceph_readdir_cache_release(&cache_ctl); 1533355da1ebSSage Weil if (snapdir) { 1534355da1ebSSage Weil iput(snapdir); 1535355da1ebSSage Weil dput(parent); 1536355da1ebSSage Weil } 1537355da1ebSSage Weil dout("readdir_prepopulate done\n"); 1538355da1ebSSage Weil return err; 1539355da1ebSSage Weil } 1540355da1ebSSage Weil 1541355da1ebSSage Weil int ceph_inode_set_size(struct inode *inode, loff_t size) 1542355da1ebSSage Weil { 1543355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1544355da1ebSSage Weil int ret = 0; 1545355da1ebSSage Weil 1546be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1547355da1ebSSage Weil dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); 154899c88e69SYan, Zheng i_size_write(inode, size); 1549355da1ebSSage Weil inode->i_blocks = (size + (1 << 9) - 1) >> 9; 1550355da1ebSSage Weil 1551355da1ebSSage Weil /* tell the MDS if we are approaching max_size */ 1552355da1ebSSage Weil if ((size << 1) >= ci->i_max_size && 1553355da1ebSSage Weil (ci->i_reported_size << 1) < ci->i_max_size) 1554355da1ebSSage Weil ret = 1; 1555355da1ebSSage Weil 1556be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1557355da1ebSSage Weil return ret; 1558355da1ebSSage Weil } 1559355da1ebSSage Weil 1560355da1ebSSage Weil /* 1561355da1ebSSage Weil * Write back inode data in a worker thread. (This can't be done 1562355da1ebSSage Weil * in the message handler context.) 1563355da1ebSSage Weil */ 15643c6f6b79SSage Weil void ceph_queue_writeback(struct inode *inode) 15653c6f6b79SSage Weil { 156615a2015fSSage Weil ihold(inode); 15673c6f6b79SSage Weil if (queue_work(ceph_inode_to_client(inode)->wb_wq, 15683c6f6b79SSage Weil &ceph_inode(inode)->i_wb_work)) { 15692c27c9a5SSage Weil dout("ceph_queue_writeback %p\n", inode); 15703c6f6b79SSage Weil } else { 15712c27c9a5SSage Weil dout("ceph_queue_writeback %p failed\n", inode); 157215a2015fSSage Weil iput(inode); 15733c6f6b79SSage Weil } 15743c6f6b79SSage Weil } 15753c6f6b79SSage Weil 15763c6f6b79SSage Weil static void ceph_writeback_work(struct work_struct *work) 1577355da1ebSSage Weil { 1578355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1579355da1ebSSage Weil i_wb_work); 1580355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1581355da1ebSSage Weil 1582355da1ebSSage Weil dout("writeback %p\n", inode); 1583355da1ebSSage Weil filemap_fdatawrite(&inode->i_data); 1584355da1ebSSage Weil iput(inode); 1585355da1ebSSage Weil } 1586355da1ebSSage Weil 1587355da1ebSSage Weil /* 15883c6f6b79SSage Weil * queue an async invalidation 15893c6f6b79SSage Weil */ 15903c6f6b79SSage Weil void ceph_queue_invalidate(struct inode *inode) 15913c6f6b79SSage Weil { 159215a2015fSSage Weil ihold(inode); 15933c6f6b79SSage Weil if (queue_work(ceph_inode_to_client(inode)->pg_inv_wq, 15943c6f6b79SSage Weil &ceph_inode(inode)->i_pg_inv_work)) { 15953c6f6b79SSage Weil dout("ceph_queue_invalidate %p\n", inode); 15963c6f6b79SSage Weil } else { 15973c6f6b79SSage Weil dout("ceph_queue_invalidate %p failed\n", inode); 159815a2015fSSage Weil iput(inode); 15993c6f6b79SSage Weil } 16003c6f6b79SSage Weil } 16013c6f6b79SSage Weil 16023c6f6b79SSage Weil /* 1603355da1ebSSage Weil * Invalidate inode pages in a worker thread. (This can't be done 1604355da1ebSSage Weil * in the message handler context.) 1605355da1ebSSage Weil */ 16063c6f6b79SSage Weil static void ceph_invalidate_work(struct work_struct *work) 1607355da1ebSSage Weil { 1608355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1609355da1ebSSage Weil i_pg_inv_work); 1610355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1611355da1ebSSage Weil u32 orig_gen; 1612355da1ebSSage Weil int check = 0; 1613355da1ebSSage Weil 1614b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1615be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1616355da1ebSSage Weil dout("invalidate_pages %p gen %d revoking %d\n", inode, 1617355da1ebSSage Weil ci->i_rdcache_gen, ci->i_rdcache_revoking); 1618cd045cb4SSage Weil if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { 16199563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 16209563f88cSYan, Zheng check = 1; 1621be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1622b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1623355da1ebSSage Weil goto out; 1624355da1ebSSage Weil } 1625355da1ebSSage Weil orig_gen = ci->i_rdcache_gen; 1626be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1627355da1ebSSage Weil 16284e217b5dSYan, Zheng truncate_pagecache(inode, 0); 1629355da1ebSSage Weil 1630be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1631cd045cb4SSage Weil if (orig_gen == ci->i_rdcache_gen && 1632cd045cb4SSage Weil orig_gen == ci->i_rdcache_revoking) { 1633355da1ebSSage Weil dout("invalidate_pages %p gen %d successful\n", inode, 1634355da1ebSSage Weil ci->i_rdcache_gen); 1635cd045cb4SSage Weil ci->i_rdcache_revoking--; 1636355da1ebSSage Weil check = 1; 1637355da1ebSSage Weil } else { 1638cd045cb4SSage Weil dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", 1639cd045cb4SSage Weil inode, orig_gen, ci->i_rdcache_gen, 1640cd045cb4SSage Weil ci->i_rdcache_revoking); 16419563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 16429563f88cSYan, Zheng check = 1; 1643355da1ebSSage Weil } 1644be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1645b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 16469563f88cSYan, Zheng out: 1647355da1ebSSage Weil if (check) 1648355da1ebSSage Weil ceph_check_caps(ci, 0, NULL); 1649355da1ebSSage Weil iput(inode); 1650355da1ebSSage Weil } 1651355da1ebSSage Weil 1652355da1ebSSage Weil 1653355da1ebSSage Weil /* 16543f99969fSYan, Zheng * called by trunc_wq; 1655355da1ebSSage Weil * 1656355da1ebSSage Weil * We also truncate in a separate thread as well. 1657355da1ebSSage Weil */ 16583c6f6b79SSage Weil static void ceph_vmtruncate_work(struct work_struct *work) 1659355da1ebSSage Weil { 1660355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1661355da1ebSSage Weil i_vmtruncate_work); 1662355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1663355da1ebSSage Weil 1664355da1ebSSage Weil dout("vmtruncate_work %p\n", inode); 1665b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 1666355da1ebSSage Weil iput(inode); 1667355da1ebSSage Weil } 1668355da1ebSSage Weil 1669355da1ebSSage Weil /* 16703c6f6b79SSage Weil * Queue an async vmtruncate. If we fail to queue work, we will handle 16713c6f6b79SSage Weil * the truncation the next time we call __ceph_do_pending_vmtruncate. 16723c6f6b79SSage Weil */ 16733c6f6b79SSage Weil void ceph_queue_vmtruncate(struct inode *inode) 16743c6f6b79SSage Weil { 16753c6f6b79SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 16763c6f6b79SSage Weil 167715a2015fSSage Weil ihold(inode); 167899ccbd22SMilosz Tanski 1679640ef79dSCheng Renquan if (queue_work(ceph_sb_to_client(inode->i_sb)->trunc_wq, 16803c6f6b79SSage Weil &ci->i_vmtruncate_work)) { 16813c6f6b79SSage Weil dout("ceph_queue_vmtruncate %p\n", inode); 16823c6f6b79SSage Weil } else { 16833c6f6b79SSage Weil dout("ceph_queue_vmtruncate %p failed, pending=%d\n", 16843c6f6b79SSage Weil inode, ci->i_truncate_pending); 168515a2015fSSage Weil iput(inode); 16863c6f6b79SSage Weil } 16873c6f6b79SSage Weil } 16883c6f6b79SSage Weil 16893c6f6b79SSage Weil /* 1690355da1ebSSage Weil * Make sure any pending truncation is applied before doing anything 1691355da1ebSSage Weil * that may depend on it. 1692355da1ebSSage Weil */ 1693b415bf4fSYan, Zheng void __ceph_do_pending_vmtruncate(struct inode *inode) 1694355da1ebSSage Weil { 1695355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1696355da1ebSSage Weil u64 to; 1697a85f50b6SYan, Zheng int wrbuffer_refs, finish = 0; 1698355da1ebSSage Weil 1699b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1700355da1ebSSage Weil retry: 1701be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1702355da1ebSSage Weil if (ci->i_truncate_pending == 0) { 1703355da1ebSSage Weil dout("__do_pending_vmtruncate %p none pending\n", inode); 1704be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1705b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1706355da1ebSSage Weil return; 1707355da1ebSSage Weil } 1708355da1ebSSage Weil 1709355da1ebSSage Weil /* 1710355da1ebSSage Weil * make sure any dirty snapped pages are flushed before we 1711355da1ebSSage Weil * possibly truncate them.. so write AND block! 1712355da1ebSSage Weil */ 1713355da1ebSSage Weil if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { 1714355da1ebSSage Weil dout("__do_pending_vmtruncate %p flushing snaps first\n", 1715355da1ebSSage Weil inode); 1716be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1717355da1ebSSage Weil filemap_write_and_wait_range(&inode->i_data, 0, 1718355da1ebSSage Weil inode->i_sb->s_maxbytes); 1719355da1ebSSage Weil goto retry; 1720355da1ebSSage Weil } 1721355da1ebSSage Weil 1722b0d7c223SYan, Zheng /* there should be no reader or writer */ 1723b0d7c223SYan, Zheng WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); 1724b0d7c223SYan, Zheng 1725355da1ebSSage Weil to = ci->i_truncate_size; 1726355da1ebSSage Weil wrbuffer_refs = ci->i_wrbuffer_ref; 1727355da1ebSSage Weil dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, 1728355da1ebSSage Weil ci->i_truncate_pending, to); 1729be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1730355da1ebSSage Weil 17314e217b5dSYan, Zheng truncate_pagecache(inode, to); 1732355da1ebSSage Weil 1733be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1734a85f50b6SYan, Zheng if (to == ci->i_truncate_size) { 1735a85f50b6SYan, Zheng ci->i_truncate_pending = 0; 1736a85f50b6SYan, Zheng finish = 1; 1737a85f50b6SYan, Zheng } 1738be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1739a85f50b6SYan, Zheng if (!finish) 1740a85f50b6SYan, Zheng goto retry; 1741355da1ebSSage Weil 1742b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1743b0d7c223SYan, Zheng 1744355da1ebSSage Weil if (wrbuffer_refs == 0) 1745355da1ebSSage Weil ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL); 1746a85f50b6SYan, Zheng 174703066f23SYehuda Sadeh wake_up_all(&ci->i_cap_wq); 1748355da1ebSSage Weil } 1749355da1ebSSage Weil 1750355da1ebSSage Weil /* 1751355da1ebSSage Weil * symlinks 1752355da1ebSSage Weil */ 1753355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops = { 1754355da1ebSSage Weil .readlink = generic_readlink, 17556b255391SAl Viro .get_link = simple_get_link, 17560b932672SYan, Zheng .setattr = ceph_setattr, 17570b932672SYan, Zheng .getattr = ceph_getattr, 17580b932672SYan, Zheng .setxattr = ceph_setxattr, 17590b932672SYan, Zheng .getxattr = ceph_getxattr, 17600b932672SYan, Zheng .listxattr = ceph_listxattr, 17610b932672SYan, Zheng .removexattr = ceph_removexattr, 1762355da1ebSSage Weil }; 1763355da1ebSSage Weil 1764355da1ebSSage Weil /* 1765355da1ebSSage Weil * setattr 1766355da1ebSSage Weil */ 1767355da1ebSSage Weil int ceph_setattr(struct dentry *dentry, struct iattr *attr) 1768355da1ebSSage Weil { 17692b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 1770355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1771355da1ebSSage Weil const unsigned int ia_valid = attr->ia_valid; 1772355da1ebSSage Weil struct ceph_mds_request *req; 17733d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = ceph_sb_to_client(dentry->d_sb)->mdsc; 1774f66fd9f0SYan, Zheng struct ceph_cap_flush *prealloc_cf; 1775355da1ebSSage Weil int issued; 1776355da1ebSSage Weil int release = 0, dirtied = 0; 1777355da1ebSSage Weil int mask = 0; 1778355da1ebSSage Weil int err = 0; 1779fca65b4aSSage Weil int inode_dirty_flags = 0; 1780604d1b02SYan, Zheng bool lock_snap_rwsem = false; 1781355da1ebSSage Weil 1782355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 1783355da1ebSSage Weil return -EROFS; 1784355da1ebSSage Weil 1785355da1ebSSage Weil err = inode_change_ok(inode, attr); 1786355da1ebSSage Weil if (err != 0) 1787355da1ebSSage Weil return err; 1788355da1ebSSage Weil 1789f66fd9f0SYan, Zheng prealloc_cf = ceph_alloc_cap_flush(); 1790f66fd9f0SYan, Zheng if (!prealloc_cf) 1791f66fd9f0SYan, Zheng return -ENOMEM; 1792f66fd9f0SYan, Zheng 1793355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, 1794355da1ebSSage Weil USE_AUTH_MDS); 1795f66fd9f0SYan, Zheng if (IS_ERR(req)) { 1796f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 1797355da1ebSSage Weil return PTR_ERR(req); 1798f66fd9f0SYan, Zheng } 1799355da1ebSSage Weil 1800be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1801355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 1802604d1b02SYan, Zheng 1803604d1b02SYan, Zheng if (!ci->i_head_snapc && 1804604d1b02SYan, Zheng (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { 1805604d1b02SYan, Zheng lock_snap_rwsem = true; 1806604d1b02SYan, Zheng if (!down_read_trylock(&mdsc->snap_rwsem)) { 1807604d1b02SYan, Zheng spin_unlock(&ci->i_ceph_lock); 1808604d1b02SYan, Zheng down_read(&mdsc->snap_rwsem); 1809604d1b02SYan, Zheng spin_lock(&ci->i_ceph_lock); 1810604d1b02SYan, Zheng issued = __ceph_caps_issued(ci, NULL); 1811604d1b02SYan, Zheng } 1812604d1b02SYan, Zheng } 1813604d1b02SYan, Zheng 1814355da1ebSSage Weil dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); 1815355da1ebSSage Weil 1816355da1ebSSage Weil if (ia_valid & ATTR_UID) { 1817355da1ebSSage Weil dout("setattr %p uid %d -> %d\n", inode, 1818bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 1819bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 1820355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1821355da1ebSSage Weil inode->i_uid = attr->ia_uid; 1822355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1823355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1824ab871b90SEric W. Biederman !uid_eq(attr->ia_uid, inode->i_uid)) { 1825ab871b90SEric W. Biederman req->r_args.setattr.uid = cpu_to_le32( 1826ab871b90SEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 1827355da1ebSSage Weil mask |= CEPH_SETATTR_UID; 1828355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1829355da1ebSSage Weil } 1830355da1ebSSage Weil } 1831355da1ebSSage Weil if (ia_valid & ATTR_GID) { 1832355da1ebSSage Weil dout("setattr %p gid %d -> %d\n", inode, 1833bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid), 1834bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 1835355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1836355da1ebSSage Weil inode->i_gid = attr->ia_gid; 1837355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1838355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1839ab871b90SEric W. Biederman !gid_eq(attr->ia_gid, inode->i_gid)) { 1840ab871b90SEric W. Biederman req->r_args.setattr.gid = cpu_to_le32( 1841ab871b90SEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 1842355da1ebSSage Weil mask |= CEPH_SETATTR_GID; 1843355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1844355da1ebSSage Weil } 1845355da1ebSSage Weil } 1846355da1ebSSage Weil if (ia_valid & ATTR_MODE) { 1847355da1ebSSage Weil dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, 1848355da1ebSSage Weil attr->ia_mode); 1849355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1850355da1ebSSage Weil inode->i_mode = attr->ia_mode; 1851355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1852355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1853355da1ebSSage Weil attr->ia_mode != inode->i_mode) { 18547221fe4cSGuangliang Zhao inode->i_mode = attr->ia_mode; 1855355da1ebSSage Weil req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); 1856355da1ebSSage Weil mask |= CEPH_SETATTR_MODE; 1857355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1858355da1ebSSage Weil } 1859355da1ebSSage Weil } 1860355da1ebSSage Weil 1861355da1ebSSage Weil if (ia_valid & ATTR_ATIME) { 1862355da1ebSSage Weil dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode, 1863355da1ebSSage Weil inode->i_atime.tv_sec, inode->i_atime.tv_nsec, 1864355da1ebSSage Weil attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); 1865355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 1866355da1ebSSage Weil ci->i_time_warp_seq++; 1867355da1ebSSage Weil inode->i_atime = attr->ia_atime; 1868355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1869355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 1870355da1ebSSage Weil timespec_compare(&inode->i_atime, 1871355da1ebSSage Weil &attr->ia_atime) < 0) { 1872355da1ebSSage Weil inode->i_atime = attr->ia_atime; 1873355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 1874355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1875355da1ebSSage Weil !timespec_equal(&inode->i_atime, &attr->ia_atime)) { 1876355da1ebSSage Weil ceph_encode_timespec(&req->r_args.setattr.atime, 1877355da1ebSSage Weil &attr->ia_atime); 1878355da1ebSSage Weil mask |= CEPH_SETATTR_ATIME; 1879355da1ebSSage Weil release |= CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD | 1880355da1ebSSage Weil CEPH_CAP_FILE_WR; 1881355da1ebSSage Weil } 1882355da1ebSSage Weil } 1883355da1ebSSage Weil if (ia_valid & ATTR_MTIME) { 1884355da1ebSSage Weil dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode, 1885355da1ebSSage Weil inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 1886355da1ebSSage Weil attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); 1887355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 1888355da1ebSSage Weil ci->i_time_warp_seq++; 1889355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 1890355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1891355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 1892355da1ebSSage Weil timespec_compare(&inode->i_mtime, 1893355da1ebSSage Weil &attr->ia_mtime) < 0) { 1894355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 1895355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 1896355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1897355da1ebSSage Weil !timespec_equal(&inode->i_mtime, &attr->ia_mtime)) { 1898355da1ebSSage Weil ceph_encode_timespec(&req->r_args.setattr.mtime, 1899355da1ebSSage Weil &attr->ia_mtime); 1900355da1ebSSage Weil mask |= CEPH_SETATTR_MTIME; 1901355da1ebSSage Weil release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | 1902355da1ebSSage Weil CEPH_CAP_FILE_WR; 1903355da1ebSSage Weil } 1904355da1ebSSage Weil } 1905355da1ebSSage Weil if (ia_valid & ATTR_SIZE) { 1906355da1ebSSage Weil dout("setattr %p size %lld -> %lld\n", inode, 1907355da1ebSSage Weil inode->i_size, attr->ia_size); 1908355da1ebSSage Weil if ((issued & CEPH_CAP_FILE_EXCL) && 1909355da1ebSSage Weil attr->ia_size > inode->i_size) { 191099c88e69SYan, Zheng i_size_write(inode, attr->ia_size); 1911355da1ebSSage Weil inode->i_blocks = 1912355da1ebSSage Weil (attr->ia_size + (1 << 9) - 1) >> 9; 1913355da1ebSSage Weil inode->i_ctime = attr->ia_ctime; 1914355da1ebSSage Weil ci->i_reported_size = attr->ia_size; 1915355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1916355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1917355da1ebSSage Weil attr->ia_size != inode->i_size) { 1918355da1ebSSage Weil req->r_args.setattr.size = cpu_to_le64(attr->ia_size); 1919355da1ebSSage Weil req->r_args.setattr.old_size = 1920355da1ebSSage Weil cpu_to_le64(inode->i_size); 1921355da1ebSSage Weil mask |= CEPH_SETATTR_SIZE; 1922355da1ebSSage Weil release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | 1923355da1ebSSage Weil CEPH_CAP_FILE_WR; 1924355da1ebSSage Weil } 1925355da1ebSSage Weil } 1926355da1ebSSage Weil 1927355da1ebSSage Weil /* these do nothing */ 1928355da1ebSSage Weil if (ia_valid & ATTR_CTIME) { 1929355da1ebSSage Weil bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| 1930355da1ebSSage Weil ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; 1931355da1ebSSage Weil dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode, 1932355da1ebSSage Weil inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 1933355da1ebSSage Weil attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, 1934355da1ebSSage Weil only ? "ctime only" : "ignored"); 1935355da1ebSSage Weil inode->i_ctime = attr->ia_ctime; 1936355da1ebSSage Weil if (only) { 1937355da1ebSSage Weil /* 1938355da1ebSSage Weil * if kernel wants to dirty ctime but nothing else, 1939355da1ebSSage Weil * we need to choose a cap to dirty under, or do 1940355da1ebSSage Weil * a almost-no-op setattr 1941355da1ebSSage Weil */ 1942355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) 1943355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1944355da1ebSSage Weil else if (issued & CEPH_CAP_FILE_EXCL) 1945355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1946355da1ebSSage Weil else if (issued & CEPH_CAP_XATTR_EXCL) 1947355da1ebSSage Weil dirtied |= CEPH_CAP_XATTR_EXCL; 1948355da1ebSSage Weil else 1949355da1ebSSage Weil mask |= CEPH_SETATTR_CTIME; 1950355da1ebSSage Weil } 1951355da1ebSSage Weil } 1952355da1ebSSage Weil if (ia_valid & ATTR_FILE) 1953355da1ebSSage Weil dout("setattr %p ATTR_FILE ... hrm!\n", inode); 1954355da1ebSSage Weil 1955355da1ebSSage Weil if (dirtied) { 1956f66fd9f0SYan, Zheng inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, 1957f66fd9f0SYan, Zheng &prealloc_cf); 19588bbd4714SDeepa Dinamani inode->i_ctime = current_fs_time(inode->i_sb); 1959355da1ebSSage Weil } 1960355da1ebSSage Weil 1961355da1ebSSage Weil release &= issued; 1962be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1963604d1b02SYan, Zheng if (lock_snap_rwsem) 1964604d1b02SYan, Zheng up_read(&mdsc->snap_rwsem); 1965355da1ebSSage Weil 1966fca65b4aSSage Weil if (inode_dirty_flags) 1967fca65b4aSSage Weil __mark_inode_dirty(inode, inode_dirty_flags); 1968fca65b4aSSage Weil 19697221fe4cSGuangliang Zhao if (ia_valid & ATTR_MODE) { 19704db658eaSLinus Torvalds err = posix_acl_chmod(inode, attr->ia_mode); 19717221fe4cSGuangliang Zhao if (err) 19727221fe4cSGuangliang Zhao goto out_put; 19737221fe4cSGuangliang Zhao } 19747221fe4cSGuangliang Zhao 1975355da1ebSSage Weil if (mask) { 197670b666c3SSage Weil req->r_inode = inode; 197770b666c3SSage Weil ihold(inode); 1978355da1ebSSage Weil req->r_inode_drop = release; 1979355da1ebSSage Weil req->r_args.setattr.mask = cpu_to_le32(mask); 1980355da1ebSSage Weil req->r_num_caps = 1; 1981752c8bdcSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 1982355da1ebSSage Weil } 1983355da1ebSSage Weil dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, 1984355da1ebSSage Weil ceph_cap_string(dirtied), mask); 1985355da1ebSSage Weil 1986355da1ebSSage Weil ceph_mdsc_put_request(req); 1987b0d7c223SYan, Zheng if (mask & CEPH_SETATTR_SIZE) 1988b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 1989f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 1990355da1ebSSage Weil return err; 19917221fe4cSGuangliang Zhao out_put: 1992355da1ebSSage Weil ceph_mdsc_put_request(req); 1993f66fd9f0SYan, Zheng ceph_free_cap_flush(prealloc_cf); 1994355da1ebSSage Weil return err; 1995355da1ebSSage Weil } 1996355da1ebSSage Weil 1997355da1ebSSage Weil /* 1998355da1ebSSage Weil * Verify that we have a lease on the given mask. If not, 1999355da1ebSSage Weil * do a getattr against an mds. 2000355da1ebSSage Weil */ 200101deead0SYan, Zheng int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 200201deead0SYan, Zheng int mask, bool force) 2003355da1ebSSage Weil { 20043d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 20053d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 2006355da1ebSSage Weil struct ceph_mds_request *req; 2007355da1ebSSage Weil int err; 2008355da1ebSSage Weil 2009355da1ebSSage Weil if (ceph_snap(inode) == CEPH_SNAPDIR) { 2010355da1ebSSage Weil dout("do_getattr inode %p SNAPDIR\n", inode); 2011355da1ebSSage Weil return 0; 2012355da1ebSSage Weil } 2013355da1ebSSage Weil 201401deead0SYan, Zheng dout("do_getattr inode %p mask %s mode 0%o\n", 201501deead0SYan, Zheng inode, ceph_cap_string(mask), inode->i_mode); 2016508b32d8SYan, Zheng if (!force && ceph_caps_issued_mask(ceph_inode(inode), mask, 1)) 2017355da1ebSSage Weil return 0; 2018355da1ebSSage Weil 2019355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS); 2020355da1ebSSage Weil if (IS_ERR(req)) 2021355da1ebSSage Weil return PTR_ERR(req); 202270b666c3SSage Weil req->r_inode = inode; 202370b666c3SSage Weil ihold(inode); 2024355da1ebSSage Weil req->r_num_caps = 1; 2025355da1ebSSage Weil req->r_args.getattr.mask = cpu_to_le32(mask); 202601deead0SYan, Zheng req->r_locked_page = locked_page; 2027355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 202801deead0SYan, Zheng if (locked_page && err == 0) { 202901deead0SYan, Zheng u64 inline_version = req->r_reply_info.targeti.inline_version; 203001deead0SYan, Zheng if (inline_version == 0) { 203101deead0SYan, Zheng /* the reply is supposed to contain inline data */ 203201deead0SYan, Zheng err = -EINVAL; 203301deead0SYan, Zheng } else if (inline_version == CEPH_INLINE_NONE) { 203401deead0SYan, Zheng err = -ENODATA; 203501deead0SYan, Zheng } else { 203601deead0SYan, Zheng err = req->r_reply_info.targeti.inline_len; 203701deead0SYan, Zheng } 203801deead0SYan, Zheng } 2039355da1ebSSage Weil ceph_mdsc_put_request(req); 2040355da1ebSSage Weil dout("do_getattr result=%d\n", err); 2041355da1ebSSage Weil return err; 2042355da1ebSSage Weil } 2043355da1ebSSage Weil 2044355da1ebSSage Weil 2045355da1ebSSage Weil /* 2046355da1ebSSage Weil * Check inode permissions. We verify we have a valid value for 2047355da1ebSSage Weil * the AUTH cap, then call the generic handler. 2048355da1ebSSage Weil */ 204910556cb2SAl Viro int ceph_permission(struct inode *inode, int mask) 2050355da1ebSSage Weil { 2051b74c79e9SNick Piggin int err; 2052b74c79e9SNick Piggin 205310556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 2054b74c79e9SNick Piggin return -ECHILD; 2055b74c79e9SNick Piggin 2056508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); 2057355da1ebSSage Weil 2058355da1ebSSage Weil if (!err) 20592830ba7fSAl Viro err = generic_permission(inode, mask); 2060355da1ebSSage Weil return err; 2061355da1ebSSage Weil } 2062355da1ebSSage Weil 2063355da1ebSSage Weil /* 2064355da1ebSSage Weil * Get all attributes. Hopefully somedata we'll have a statlite() 2065355da1ebSSage Weil * and can limit the fields we require to be accurate. 2066355da1ebSSage Weil */ 2067355da1ebSSage Weil int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, 2068355da1ebSSage Weil struct kstat *stat) 2069355da1ebSSage Weil { 20702b0143b5SDavid Howells struct inode *inode = d_inode(dentry); 2071232d4b01SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 2072355da1ebSSage Weil int err; 2073355da1ebSSage Weil 2074508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL, false); 2075355da1ebSSage Weil if (!err) { 2076355da1ebSSage Weil generic_fillattr(inode, stat); 2077ad1fee96SYehuda Sadeh stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino); 2078355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 2079355da1ebSSage Weil stat->dev = ceph_snap(inode); 2080355da1ebSSage Weil else 2081355da1ebSSage Weil stat->dev = 0; 2082232d4b01SSage Weil if (S_ISDIR(inode->i_mode)) { 20831c1266bbSYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), 20841c1266bbSYehuda Sadeh RBYTES)) 2085232d4b01SSage Weil stat->size = ci->i_rbytes; 20861c1266bbSYehuda Sadeh else 20871c1266bbSYehuda Sadeh stat->size = ci->i_files + ci->i_subdirs; 2088232d4b01SSage Weil stat->blocks = 0; 2089355da1ebSSage Weil stat->blksize = 65536; 2090355da1ebSSage Weil } 2091232d4b01SSage Weil } 2092355da1ebSSage Weil return err; 2093355da1ebSSage Weil } 2094