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/namei.h> 10355da1ebSSage Weil #include <linux/writeback.h> 11355da1ebSSage Weil #include <linux/vmalloc.h> 124db658eaSLinus Torvalds #include <linux/posix_acl.h> 133e7fbe9cSYan, Zheng #include <linux/random.h> 14355da1ebSSage Weil 15355da1ebSSage Weil #include "super.h" 163d14c5d2SYehuda Sadeh #include "mds_client.h" 1799ccbd22SMilosz Tanski #include "cache.h" 183d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 19355da1ebSSage Weil 20355da1ebSSage Weil /* 21355da1ebSSage Weil * Ceph inode operations 22355da1ebSSage Weil * 23355da1ebSSage Weil * Implement basic inode helpers (get, alloc) and inode ops (getattr, 24355da1ebSSage Weil * setattr, etc.), xattr helpers, and helpers for assimilating 25355da1ebSSage Weil * metadata returned by the MDS into our cache. 26355da1ebSSage Weil * 27355da1ebSSage Weil * Also define helpers for doing asynchronous writeback, invalidation, 28355da1ebSSage Weil * and truncation for the benefit of those who can't afford to block 29355da1ebSSage Weil * (typically because they are in the message handler path). 30355da1ebSSage Weil */ 31355da1ebSSage Weil 32355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops; 33355da1ebSSage Weil 343c6f6b79SSage Weil static void ceph_invalidate_work(struct work_struct *work); 353c6f6b79SSage Weil static void ceph_writeback_work(struct work_struct *work); 363c6f6b79SSage Weil static void ceph_vmtruncate_work(struct work_struct *work); 37355da1ebSSage Weil 38355da1ebSSage Weil /* 39355da1ebSSage Weil * find or create an inode, given the ceph ino number 40355da1ebSSage Weil */ 41ad1fee96SYehuda Sadeh static int ceph_set_ino_cb(struct inode *inode, void *data) 42ad1fee96SYehuda Sadeh { 43ad1fee96SYehuda Sadeh ceph_inode(inode)->i_vino = *(struct ceph_vino *)data; 44ad1fee96SYehuda Sadeh inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data); 45ad1fee96SYehuda Sadeh return 0; 46ad1fee96SYehuda Sadeh } 47ad1fee96SYehuda Sadeh 48355da1ebSSage Weil struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) 49355da1ebSSage Weil { 50355da1ebSSage Weil struct inode *inode; 51355da1ebSSage Weil ino_t t = ceph_vino_to_ino(vino); 52355da1ebSSage Weil 53355da1ebSSage Weil inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino); 54355da1ebSSage Weil if (inode == NULL) 55355da1ebSSage Weil return ERR_PTR(-ENOMEM); 56355da1ebSSage Weil if (inode->i_state & I_NEW) { 57355da1ebSSage Weil dout("get_inode created new inode %p %llx.%llx ino %llx\n", 58355da1ebSSage Weil inode, ceph_vinop(inode), (u64)inode->i_ino); 59355da1ebSSage Weil unlock_new_inode(inode); 60355da1ebSSage Weil } 61355da1ebSSage Weil 62355da1ebSSage Weil dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino, 63355da1ebSSage Weil vino.snap, inode); 64355da1ebSSage Weil return inode; 65355da1ebSSage Weil } 66355da1ebSSage Weil 67355da1ebSSage Weil /* 68355da1ebSSage Weil * get/constuct snapdir inode for a given directory 69355da1ebSSage Weil */ 70355da1ebSSage Weil struct inode *ceph_get_snapdir(struct inode *parent) 71355da1ebSSage Weil { 72355da1ebSSage Weil struct ceph_vino vino = { 73355da1ebSSage Weil .ino = ceph_ino(parent), 74355da1ebSSage Weil .snap = CEPH_SNAPDIR, 75355da1ebSSage Weil }; 76355da1ebSSage Weil struct inode *inode = ceph_get_inode(parent->i_sb, vino); 77b377ff13SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 78355da1ebSSage Weil 79355da1ebSSage Weil BUG_ON(!S_ISDIR(parent->i_mode)); 80355da1ebSSage Weil if (IS_ERR(inode)) 817e34bc52SJulia Lawall return inode; 82355da1ebSSage Weil inode->i_mode = parent->i_mode; 83355da1ebSSage Weil inode->i_uid = parent->i_uid; 84355da1ebSSage Weil inode->i_gid = parent->i_gid; 8538c48b5fSYan, Zheng inode->i_op = &ceph_snapdir_iops; 8638c48b5fSYan, Zheng inode->i_fop = &ceph_snapdir_fops; 87b377ff13SSage Weil ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ 88b377ff13SSage Weil ci->i_rbytes = 0; 89355da1ebSSage Weil return inode; 90355da1ebSSage Weil } 91355da1ebSSage Weil 92355da1ebSSage Weil const struct inode_operations ceph_file_iops = { 93355da1ebSSage Weil .permission = ceph_permission, 94355da1ebSSage Weil .setattr = ceph_setattr, 95355da1ebSSage Weil .getattr = ceph_getattr, 96355da1ebSSage Weil .setxattr = ceph_setxattr, 97355da1ebSSage Weil .getxattr = ceph_getxattr, 98355da1ebSSage Weil .listxattr = ceph_listxattr, 99355da1ebSSage Weil .removexattr = ceph_removexattr, 1007221fe4cSGuangliang Zhao .get_acl = ceph_get_acl, 10172466d0bSSage Weil .set_acl = ceph_set_acl, 102355da1ebSSage Weil }; 103355da1ebSSage Weil 104355da1ebSSage Weil 105355da1ebSSage Weil /* 106355da1ebSSage Weil * We use a 'frag tree' to keep track of the MDS's directory fragments 107355da1ebSSage Weil * for a given inode (usually there is just a single fragment). We 108355da1ebSSage Weil * need to know when a child frag is delegated to a new MDS, or when 109355da1ebSSage Weil * it is flagged as replicated, so we can direct our requests 110355da1ebSSage Weil * accordingly. 111355da1ebSSage Weil */ 112355da1ebSSage Weil 113355da1ebSSage Weil /* 114355da1ebSSage Weil * find/create a frag in the tree 115355da1ebSSage Weil */ 116355da1ebSSage Weil static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, 117355da1ebSSage Weil u32 f) 118355da1ebSSage Weil { 119355da1ebSSage Weil struct rb_node **p; 120355da1ebSSage Weil struct rb_node *parent = NULL; 121355da1ebSSage Weil struct ceph_inode_frag *frag; 122355da1ebSSage Weil int c; 123355da1ebSSage Weil 124355da1ebSSage Weil p = &ci->i_fragtree.rb_node; 125355da1ebSSage Weil while (*p) { 126355da1ebSSage Weil parent = *p; 127355da1ebSSage Weil frag = rb_entry(parent, struct ceph_inode_frag, node); 128355da1ebSSage Weil c = ceph_frag_compare(f, frag->frag); 129355da1ebSSage Weil if (c < 0) 130355da1ebSSage Weil p = &(*p)->rb_left; 131355da1ebSSage Weil else if (c > 0) 132355da1ebSSage Weil p = &(*p)->rb_right; 133355da1ebSSage Weil else 134355da1ebSSage Weil return frag; 135355da1ebSSage Weil } 136355da1ebSSage Weil 137355da1ebSSage Weil frag = kmalloc(sizeof(*frag), GFP_NOFS); 138355da1ebSSage Weil if (!frag) { 139355da1ebSSage Weil pr_err("__get_or_create_frag ENOMEM on %p %llx.%llx " 140355da1ebSSage Weil "frag %x\n", &ci->vfs_inode, 141355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 142355da1ebSSage Weil return ERR_PTR(-ENOMEM); 143355da1ebSSage Weil } 144355da1ebSSage Weil frag->frag = f; 145355da1ebSSage Weil frag->split_by = 0; 146355da1ebSSage Weil frag->mds = -1; 147355da1ebSSage Weil frag->ndist = 0; 148355da1ebSSage Weil 149355da1ebSSage Weil rb_link_node(&frag->node, parent, p); 150355da1ebSSage Weil rb_insert_color(&frag->node, &ci->i_fragtree); 151355da1ebSSage Weil 152355da1ebSSage Weil dout("get_or_create_frag added %llx.%llx frag %x\n", 153355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), f); 154355da1ebSSage Weil return frag; 155355da1ebSSage Weil } 156355da1ebSSage Weil 157355da1ebSSage Weil /* 158355da1ebSSage Weil * find a specific frag @f 159355da1ebSSage Weil */ 160355da1ebSSage Weil struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) 161355da1ebSSage Weil { 162355da1ebSSage Weil struct rb_node *n = ci->i_fragtree.rb_node; 163355da1ebSSage Weil 164355da1ebSSage Weil while (n) { 165355da1ebSSage Weil struct ceph_inode_frag *frag = 166355da1ebSSage Weil rb_entry(n, struct ceph_inode_frag, node); 167355da1ebSSage Weil int c = ceph_frag_compare(f, frag->frag); 168355da1ebSSage Weil if (c < 0) 169355da1ebSSage Weil n = n->rb_left; 170355da1ebSSage Weil else if (c > 0) 171355da1ebSSage Weil n = n->rb_right; 172355da1ebSSage Weil else 173355da1ebSSage Weil return frag; 174355da1ebSSage Weil } 175355da1ebSSage Weil return NULL; 176355da1ebSSage Weil } 177355da1ebSSage Weil 178355da1ebSSage Weil /* 179355da1ebSSage Weil * Choose frag containing the given value @v. If @pfrag is 180355da1ebSSage Weil * specified, copy the frag delegation info to the caller if 181355da1ebSSage Weil * it is present. 182355da1ebSSage Weil */ 1833e7fbe9cSYan, Zheng static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 1843e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 185355da1ebSSage Weil { 186355da1ebSSage Weil u32 t = ceph_frag_make(0, 0); 187355da1ebSSage Weil struct ceph_inode_frag *frag; 188355da1ebSSage Weil unsigned nway, i; 189355da1ebSSage Weil u32 n; 190355da1ebSSage Weil 191355da1ebSSage Weil if (found) 192355da1ebSSage Weil *found = 0; 193355da1ebSSage Weil 194355da1ebSSage Weil while (1) { 195355da1ebSSage Weil WARN_ON(!ceph_frag_contains_value(t, v)); 196355da1ebSSage Weil frag = __ceph_find_frag(ci, t); 197355da1ebSSage Weil if (!frag) 198355da1ebSSage Weil break; /* t is a leaf */ 199355da1ebSSage Weil if (frag->split_by == 0) { 200355da1ebSSage Weil if (pfrag) 201355da1ebSSage Weil memcpy(pfrag, frag, sizeof(*pfrag)); 202355da1ebSSage Weil if (found) 203355da1ebSSage Weil *found = 1; 204355da1ebSSage Weil break; 205355da1ebSSage Weil } 206355da1ebSSage Weil 207355da1ebSSage Weil /* choose child */ 208355da1ebSSage Weil nway = 1 << frag->split_by; 209355da1ebSSage Weil dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, 210355da1ebSSage Weil frag->split_by, nway); 211355da1ebSSage Weil for (i = 0; i < nway; i++) { 212355da1ebSSage Weil n = ceph_frag_make_child(t, frag->split_by, i); 213355da1ebSSage Weil if (ceph_frag_contains_value(n, v)) { 214355da1ebSSage Weil t = n; 215355da1ebSSage Weil break; 216355da1ebSSage Weil } 217355da1ebSSage Weil } 218355da1ebSSage Weil BUG_ON(i == nway); 219355da1ebSSage Weil } 220355da1ebSSage Weil dout("choose_frag(%x) = %x\n", v, t); 221355da1ebSSage Weil 222355da1ebSSage Weil return t; 223355da1ebSSage Weil } 224355da1ebSSage Weil 2253e7fbe9cSYan, Zheng u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, 2263e7fbe9cSYan, Zheng struct ceph_inode_frag *pfrag, int *found) 2273e7fbe9cSYan, Zheng { 2283e7fbe9cSYan, Zheng u32 ret; 2293e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 2303e7fbe9cSYan, Zheng ret = __ceph_choose_frag(ci, v, pfrag, found); 2313e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 2323e7fbe9cSYan, Zheng return ret; 2333e7fbe9cSYan, Zheng } 2343e7fbe9cSYan, Zheng 235355da1ebSSage Weil /* 236355da1ebSSage Weil * Process dirfrag (delegation) info from the mds. Include leaf 237355da1ebSSage Weil * fragment in tree ONLY if ndist > 0. Otherwise, only 238355da1ebSSage Weil * branches/splits are included in i_fragtree) 239355da1ebSSage Weil */ 240355da1ebSSage Weil static int ceph_fill_dirfrag(struct inode *inode, 241355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo) 242355da1ebSSage Weil { 243355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 244355da1ebSSage Weil struct ceph_inode_frag *frag; 245355da1ebSSage Weil u32 id = le32_to_cpu(dirinfo->frag); 246355da1ebSSage Weil int mds = le32_to_cpu(dirinfo->auth); 247355da1ebSSage Weil int ndist = le32_to_cpu(dirinfo->ndist); 2488d08503cSYan, Zheng int diri_auth = -1; 249355da1ebSSage Weil int i; 250355da1ebSSage Weil int err = 0; 251355da1ebSSage Weil 2528d08503cSYan, Zheng spin_lock(&ci->i_ceph_lock); 2538d08503cSYan, Zheng if (ci->i_auth_cap) 2548d08503cSYan, Zheng diri_auth = ci->i_auth_cap->mds; 2558d08503cSYan, Zheng spin_unlock(&ci->i_ceph_lock); 2568d08503cSYan, Zheng 257355da1ebSSage Weil mutex_lock(&ci->i_fragtree_mutex); 2588d08503cSYan, Zheng if (ndist == 0 && mds == diri_auth) { 259355da1ebSSage Weil /* no delegation info needed. */ 260355da1ebSSage Weil frag = __ceph_find_frag(ci, id); 261355da1ebSSage Weil if (!frag) 262355da1ebSSage Weil goto out; 263355da1ebSSage Weil if (frag->split_by == 0) { 264355da1ebSSage Weil /* tree leaf, remove */ 265355da1ebSSage Weil dout("fill_dirfrag removed %llx.%llx frag %x" 266355da1ebSSage Weil " (no ref)\n", ceph_vinop(inode), id); 267355da1ebSSage Weil rb_erase(&frag->node, &ci->i_fragtree); 268355da1ebSSage Weil kfree(frag); 269355da1ebSSage Weil } else { 270355da1ebSSage Weil /* tree branch, keep and clear */ 271355da1ebSSage Weil dout("fill_dirfrag cleared %llx.%llx frag %x" 272355da1ebSSage Weil " referral\n", ceph_vinop(inode), id); 273355da1ebSSage Weil frag->mds = -1; 274355da1ebSSage Weil frag->ndist = 0; 275355da1ebSSage Weil } 276355da1ebSSage Weil goto out; 277355da1ebSSage Weil } 278355da1ebSSage Weil 279355da1ebSSage Weil 280355da1ebSSage Weil /* find/add this frag to store mds delegation info */ 281355da1ebSSage Weil frag = __get_or_create_frag(ci, id); 282355da1ebSSage Weil if (IS_ERR(frag)) { 283355da1ebSSage Weil /* this is not the end of the world; we can continue 284355da1ebSSage Weil with bad/inaccurate delegation info */ 285355da1ebSSage Weil pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", 286355da1ebSSage Weil ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); 287355da1ebSSage Weil err = -ENOMEM; 288355da1ebSSage Weil goto out; 289355da1ebSSage Weil } 290355da1ebSSage Weil 291355da1ebSSage Weil frag->mds = mds; 292355da1ebSSage Weil frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); 293355da1ebSSage Weil for (i = 0; i < frag->ndist; i++) 294355da1ebSSage Weil frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); 295355da1ebSSage Weil dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", 296355da1ebSSage Weil ceph_vinop(inode), frag->frag, frag->ndist); 297355da1ebSSage Weil 298355da1ebSSage Weil out: 299355da1ebSSage Weil mutex_unlock(&ci->i_fragtree_mutex); 300355da1ebSSage Weil return err; 301355da1ebSSage Weil } 302355da1ebSSage Weil 3033e7fbe9cSYan, Zheng static int ceph_fill_fragtree(struct inode *inode, 3043e7fbe9cSYan, Zheng struct ceph_frag_tree_head *fragtree, 3053e7fbe9cSYan, Zheng struct ceph_mds_reply_dirfrag *dirinfo) 3063e7fbe9cSYan, Zheng { 3073e7fbe9cSYan, Zheng struct ceph_inode_info *ci = ceph_inode(inode); 3083e7fbe9cSYan, Zheng struct ceph_inode_frag *frag; 3093e7fbe9cSYan, Zheng struct rb_node *rb_node; 3103e7fbe9cSYan, Zheng int i; 3113e7fbe9cSYan, Zheng u32 id, nsplits; 3123e7fbe9cSYan, Zheng bool update = false; 3133e7fbe9cSYan, Zheng 3143e7fbe9cSYan, Zheng mutex_lock(&ci->i_fragtree_mutex); 3153e7fbe9cSYan, Zheng nsplits = le32_to_cpu(fragtree->nsplits); 3163e7fbe9cSYan, Zheng if (nsplits) { 3173e7fbe9cSYan, Zheng i = prandom_u32() % nsplits; 3183e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3193e7fbe9cSYan, Zheng if (!__ceph_find_frag(ci, id)) 3203e7fbe9cSYan, Zheng update = true; 3213e7fbe9cSYan, Zheng } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { 3223e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3233e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3243e7fbe9cSYan, Zheng if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) 3253e7fbe9cSYan, Zheng update = true; 3263e7fbe9cSYan, Zheng } 3273e7fbe9cSYan, Zheng if (!update && dirinfo) { 3283e7fbe9cSYan, Zheng id = le32_to_cpu(dirinfo->frag); 3293e7fbe9cSYan, Zheng if (id != __ceph_choose_frag(ci, id, NULL, NULL)) 3303e7fbe9cSYan, Zheng update = true; 3313e7fbe9cSYan, Zheng } 3323e7fbe9cSYan, Zheng if (!update) 3333e7fbe9cSYan, Zheng goto out_unlock; 3343e7fbe9cSYan, Zheng 3353e7fbe9cSYan, Zheng dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); 3363e7fbe9cSYan, Zheng rb_node = rb_first(&ci->i_fragtree); 3373e7fbe9cSYan, Zheng for (i = 0; i < nsplits; i++) { 3383e7fbe9cSYan, Zheng id = le32_to_cpu(fragtree->splits[i].frag); 3393e7fbe9cSYan, Zheng frag = NULL; 3403e7fbe9cSYan, Zheng while (rb_node) { 3413e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3423e7fbe9cSYan, Zheng if (ceph_frag_compare(frag->frag, id) >= 0) { 3433e7fbe9cSYan, Zheng if (frag->frag != id) 3443e7fbe9cSYan, Zheng frag = NULL; 3453e7fbe9cSYan, Zheng else 3463e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3473e7fbe9cSYan, Zheng break; 3483e7fbe9cSYan, Zheng } 3493e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3503e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 3513e7fbe9cSYan, Zheng kfree(frag); 3523e7fbe9cSYan, Zheng frag = NULL; 3533e7fbe9cSYan, Zheng } 3543e7fbe9cSYan, Zheng if (!frag) { 3553e7fbe9cSYan, Zheng frag = __get_or_create_frag(ci, id); 3563e7fbe9cSYan, Zheng if (IS_ERR(frag)) 3573e7fbe9cSYan, Zheng continue; 3583e7fbe9cSYan, Zheng } 3593e7fbe9cSYan, Zheng frag->split_by = le32_to_cpu(fragtree->splits[i].by); 3603e7fbe9cSYan, Zheng dout(" frag %x split by %d\n", frag->frag, frag->split_by); 3613e7fbe9cSYan, Zheng } 3623e7fbe9cSYan, Zheng while (rb_node) { 3633e7fbe9cSYan, Zheng frag = rb_entry(rb_node, struct ceph_inode_frag, node); 3643e7fbe9cSYan, Zheng rb_node = rb_next(rb_node); 3653e7fbe9cSYan, Zheng rb_erase(&frag->node, &ci->i_fragtree); 3663e7fbe9cSYan, Zheng kfree(frag); 3673e7fbe9cSYan, Zheng } 3683e7fbe9cSYan, Zheng out_unlock: 3693e7fbe9cSYan, Zheng mutex_unlock(&ci->i_fragtree_mutex); 3703e7fbe9cSYan, Zheng return 0; 3713e7fbe9cSYan, Zheng } 372355da1ebSSage Weil 373355da1ebSSage Weil /* 374355da1ebSSage Weil * initialize a newly allocated inode. 375355da1ebSSage Weil */ 376355da1ebSSage Weil struct inode *ceph_alloc_inode(struct super_block *sb) 377355da1ebSSage Weil { 378355da1ebSSage Weil struct ceph_inode_info *ci; 379355da1ebSSage Weil int i; 380355da1ebSSage Weil 381355da1ebSSage Weil ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); 382355da1ebSSage Weil if (!ci) 383355da1ebSSage Weil return NULL; 384355da1ebSSage Weil 385355da1ebSSage Weil dout("alloc_inode %p\n", &ci->vfs_inode); 386355da1ebSSage Weil 387be655596SSage Weil spin_lock_init(&ci->i_ceph_lock); 388be655596SSage Weil 389355da1ebSSage Weil ci->i_version = 0; 39031c542a1SYan, Zheng ci->i_inline_version = 0; 391355da1ebSSage Weil ci->i_time_warp_seq = 0; 392355da1ebSSage Weil ci->i_ceph_flags = 0; 39370db4f36SYan, Zheng ci->i_ordered_count = 0; 3942f276c51SYan, Zheng atomic_set(&ci->i_release_count, 1); 3952f276c51SYan, Zheng atomic_set(&ci->i_complete_count, 0); 396355da1ebSSage Weil ci->i_symlink = NULL; 397355da1ebSSage Weil 3986c0f3af7SSage Weil memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); 3996c0f3af7SSage Weil 400355da1ebSSage Weil ci->i_fragtree = RB_ROOT; 401355da1ebSSage Weil mutex_init(&ci->i_fragtree_mutex); 402355da1ebSSage Weil 403355da1ebSSage Weil ci->i_xattrs.blob = NULL; 404355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 405355da1ebSSage Weil ci->i_xattrs.dirty = false; 406355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 407355da1ebSSage Weil ci->i_xattrs.count = 0; 408355da1ebSSage Weil ci->i_xattrs.names_size = 0; 409355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 410355da1ebSSage Weil ci->i_xattrs.version = 0; 411355da1ebSSage Weil ci->i_xattrs.index_version = 0; 412355da1ebSSage Weil 413355da1ebSSage Weil ci->i_caps = RB_ROOT; 414355da1ebSSage Weil ci->i_auth_cap = NULL; 415355da1ebSSage Weil ci->i_dirty_caps = 0; 416355da1ebSSage Weil ci->i_flushing_caps = 0; 417355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_dirty_item); 418355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_flushing_item); 419355da1ebSSage Weil ci->i_cap_flush_seq = 0; 420355da1ebSSage Weil ci->i_cap_flush_last_tid = 0; 421355da1ebSSage Weil memset(&ci->i_cap_flush_tid, 0, sizeof(ci->i_cap_flush_tid)); 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); 456355da1ebSSage Weil spin_lock_init(&ci->i_unsafe_lock); 457355da1ebSSage Weil 458355da1ebSSage Weil ci->i_snap_realm = NULL; 459355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_realm_item); 460355da1ebSSage Weil INIT_LIST_HEAD(&ci->i_snap_flush_item); 461355da1ebSSage Weil 4623c6f6b79SSage Weil INIT_WORK(&ci->i_wb_work, ceph_writeback_work); 4633c6f6b79SSage Weil INIT_WORK(&ci->i_pg_inv_work, ceph_invalidate_work); 464355da1ebSSage Weil 465355da1ebSSage Weil INIT_WORK(&ci->i_vmtruncate_work, ceph_vmtruncate_work); 466355da1ebSSage Weil 46799ccbd22SMilosz Tanski ceph_fscache_inode_init(ci); 46899ccbd22SMilosz Tanski 469355da1ebSSage Weil return &ci->vfs_inode; 470355da1ebSSage Weil } 471355da1ebSSage Weil 472fa0d7e3dSNick Piggin static void ceph_i_callback(struct rcu_head *head) 473fa0d7e3dSNick Piggin { 474fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 475fa0d7e3dSNick Piggin struct ceph_inode_info *ci = ceph_inode(inode); 476fa0d7e3dSNick Piggin 477fa0d7e3dSNick Piggin kmem_cache_free(ceph_inode_cachep, ci); 478fa0d7e3dSNick Piggin } 479fa0d7e3dSNick Piggin 480355da1ebSSage Weil void ceph_destroy_inode(struct inode *inode) 481355da1ebSSage Weil { 482355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 483355da1ebSSage Weil struct ceph_inode_frag *frag; 484355da1ebSSage Weil struct rb_node *n; 485355da1ebSSage Weil 486355da1ebSSage Weil dout("destroy_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); 487355da1ebSSage Weil 48899ccbd22SMilosz Tanski ceph_fscache_unregister_inode_cookie(ci); 48999ccbd22SMilosz Tanski 490355da1ebSSage Weil ceph_queue_caps_release(inode); 491355da1ebSSage Weil 4928b218b8aSSage Weil /* 4938b218b8aSSage Weil * we may still have a snap_realm reference if there are stray 494d9df2783SYan, Zheng * caps in i_snap_caps. 4958b218b8aSSage Weil */ 4968b218b8aSSage Weil if (ci->i_snap_realm) { 4978b218b8aSSage Weil struct ceph_mds_client *mdsc = 4983d14c5d2SYehuda Sadeh ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; 4998b218b8aSSage Weil struct ceph_snap_realm *realm = ci->i_snap_realm; 5008b218b8aSSage Weil 5018b218b8aSSage Weil dout(" dropping residual ref to snap realm %p\n", realm); 5028b218b8aSSage Weil spin_lock(&realm->inodes_with_caps_lock); 5038b218b8aSSage Weil list_del_init(&ci->i_snap_realm_item); 5048b218b8aSSage Weil spin_unlock(&realm->inodes_with_caps_lock); 5058b218b8aSSage Weil ceph_put_snap_realm(mdsc, realm); 5068b218b8aSSage Weil } 5078b218b8aSSage Weil 508355da1ebSSage Weil kfree(ci->i_symlink); 509355da1ebSSage Weil while ((n = rb_first(&ci->i_fragtree)) != NULL) { 510355da1ebSSage Weil frag = rb_entry(n, struct ceph_inode_frag, node); 511355da1ebSSage Weil rb_erase(n, &ci->i_fragtree); 512355da1ebSSage Weil kfree(frag); 513355da1ebSSage Weil } 514355da1ebSSage Weil 515355da1ebSSage Weil __ceph_destroy_xattrs(ci); 516b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 517355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 518b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 519355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 520355da1ebSSage Weil 521fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, ceph_i_callback); 522355da1ebSSage Weil } 523355da1ebSSage Weil 5249f12bd11SYan, Zheng int ceph_drop_inode(struct inode *inode) 5259f12bd11SYan, Zheng { 5269f12bd11SYan, Zheng /* 5279f12bd11SYan, Zheng * Positve dentry and corresponding inode are always accompanied 5289f12bd11SYan, Zheng * in MDS reply. So no need to keep inode in the cache after 5299f12bd11SYan, Zheng * dropping all its aliases. 5309f12bd11SYan, Zheng */ 5319f12bd11SYan, Zheng return 1; 5329f12bd11SYan, Zheng } 5339f12bd11SYan, Zheng 534355da1ebSSage Weil /* 535355da1ebSSage Weil * Helpers to fill in size, ctime, mtime, and atime. We have to be 536355da1ebSSage Weil * careful because either the client or MDS may have more up to date 537355da1ebSSage Weil * info, depending on which capabilities are held, and whether 538355da1ebSSage Weil * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime 539355da1ebSSage Weil * and size are monotonically increasing, except when utimes() or 540355da1ebSSage Weil * truncate() increments the corresponding _seq values.) 541355da1ebSSage Weil */ 542355da1ebSSage Weil int ceph_fill_file_size(struct inode *inode, int issued, 543355da1ebSSage Weil u32 truncate_seq, u64 truncate_size, u64 size) 544355da1ebSSage Weil { 545355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 546355da1ebSSage Weil int queue_trunc = 0; 547355da1ebSSage Weil 548355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || 549355da1ebSSage Weil (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { 550355da1ebSSage Weil dout("size %lld -> %llu\n", inode->i_size, size); 551355da1ebSSage Weil inode->i_size = size; 552355da1ebSSage Weil inode->i_blocks = (size + (1<<9) - 1) >> 9; 553355da1ebSSage Weil ci->i_reported_size = size; 554355da1ebSSage Weil if (truncate_seq != ci->i_truncate_seq) { 555355da1ebSSage Weil dout("truncate_seq %u -> %u\n", 556355da1ebSSage Weil ci->i_truncate_seq, truncate_seq); 557355da1ebSSage Weil ci->i_truncate_seq = truncate_seq; 558b0d7c223SYan, Zheng 559b0d7c223SYan, Zheng /* the MDS should have revoked these caps */ 560b0d7c223SYan, Zheng WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | 561b0d7c223SYan, Zheng CEPH_CAP_FILE_RD | 562b0d7c223SYan, Zheng CEPH_CAP_FILE_WR | 563b0d7c223SYan, Zheng CEPH_CAP_FILE_LAZYIO)); 5643d497d85SYehuda Sadeh /* 5653d497d85SYehuda Sadeh * If we hold relevant caps, or in the case where we're 5663d497d85SYehuda Sadeh * not the only client referencing this file and we 5673d497d85SYehuda Sadeh * don't hold those caps, then we need to check whether 5683d497d85SYehuda Sadeh * the file is either opened or mmaped 5693d497d85SYehuda Sadeh */ 570b0d7c223SYan, Zheng if ((issued & (CEPH_CAP_FILE_CACHE| 571b0d7c223SYan, Zheng CEPH_CAP_FILE_BUFFER)) || 5723d497d85SYehuda Sadeh mapping_mapped(inode->i_mapping) || 5733d497d85SYehuda Sadeh __ceph_caps_file_wanted(ci)) { 574355da1ebSSage Weil ci->i_truncate_pending++; 575355da1ebSSage Weil queue_trunc = 1; 576355da1ebSSage Weil } 577355da1ebSSage Weil } 578355da1ebSSage Weil } 579355da1ebSSage Weil if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && 580355da1ebSSage Weil ci->i_truncate_size != truncate_size) { 581355da1ebSSage Weil dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, 582355da1ebSSage Weil truncate_size); 583355da1ebSSage Weil ci->i_truncate_size = truncate_size; 584355da1ebSSage Weil } 58599ccbd22SMilosz Tanski 58699ccbd22SMilosz Tanski if (queue_trunc) 58799ccbd22SMilosz Tanski ceph_fscache_invalidate(inode); 58899ccbd22SMilosz Tanski 589355da1ebSSage Weil return queue_trunc; 590355da1ebSSage Weil } 591355da1ebSSage Weil 592355da1ebSSage Weil void ceph_fill_file_time(struct inode *inode, int issued, 593355da1ebSSage Weil u64 time_warp_seq, struct timespec *ctime, 594355da1ebSSage Weil struct timespec *mtime, struct timespec *atime) 595355da1ebSSage Weil { 596355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 597355da1ebSSage Weil int warn = 0; 598355da1ebSSage Weil 599355da1ebSSage Weil if (issued & (CEPH_CAP_FILE_EXCL| 600355da1ebSSage Weil CEPH_CAP_FILE_WR| 601d8672d64SSage Weil CEPH_CAP_FILE_BUFFER| 602d8672d64SSage Weil CEPH_CAP_AUTH_EXCL| 603d8672d64SSage Weil CEPH_CAP_XATTR_EXCL)) { 604355da1ebSSage Weil if (timespec_compare(ctime, &inode->i_ctime) > 0) { 605355da1ebSSage Weil dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n", 606355da1ebSSage Weil inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 607355da1ebSSage Weil ctime->tv_sec, ctime->tv_nsec); 608355da1ebSSage Weil inode->i_ctime = *ctime; 609355da1ebSSage Weil } 610355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { 611355da1ebSSage Weil /* the MDS did a utimes() */ 612355da1ebSSage Weil dout("mtime %ld.%09ld -> %ld.%09ld " 613355da1ebSSage Weil "tw %d -> %d\n", 614355da1ebSSage Weil inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 615355da1ebSSage Weil mtime->tv_sec, mtime->tv_nsec, 616355da1ebSSage Weil ci->i_time_warp_seq, (int)time_warp_seq); 617355da1ebSSage Weil 618355da1ebSSage Weil inode->i_mtime = *mtime; 619355da1ebSSage Weil inode->i_atime = *atime; 620355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 621355da1ebSSage Weil } else if (time_warp_seq == ci->i_time_warp_seq) { 622355da1ebSSage Weil /* nobody did utimes(); take the max */ 623355da1ebSSage Weil if (timespec_compare(mtime, &inode->i_mtime) > 0) { 624355da1ebSSage Weil dout("mtime %ld.%09ld -> %ld.%09ld inc\n", 625355da1ebSSage Weil inode->i_mtime.tv_sec, 626355da1ebSSage Weil inode->i_mtime.tv_nsec, 627355da1ebSSage Weil mtime->tv_sec, mtime->tv_nsec); 628355da1ebSSage Weil inode->i_mtime = *mtime; 629355da1ebSSage Weil } 630355da1ebSSage Weil if (timespec_compare(atime, &inode->i_atime) > 0) { 631355da1ebSSage Weil dout("atime %ld.%09ld -> %ld.%09ld inc\n", 632355da1ebSSage Weil inode->i_atime.tv_sec, 633355da1ebSSage Weil inode->i_atime.tv_nsec, 634355da1ebSSage Weil atime->tv_sec, atime->tv_nsec); 635355da1ebSSage Weil inode->i_atime = *atime; 636355da1ebSSage Weil } 637355da1ebSSage Weil } else if (issued & CEPH_CAP_FILE_EXCL) { 638355da1ebSSage Weil /* we did a utimes(); ignore mds values */ 639355da1ebSSage Weil } else { 640355da1ebSSage Weil warn = 1; 641355da1ebSSage Weil } 642355da1ebSSage Weil } else { 643d8672d64SSage Weil /* we have no write|excl caps; whatever the MDS says is true */ 644355da1ebSSage Weil if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { 645355da1ebSSage Weil inode->i_ctime = *ctime; 646355da1ebSSage Weil inode->i_mtime = *mtime; 647355da1ebSSage Weil inode->i_atime = *atime; 648355da1ebSSage Weil ci->i_time_warp_seq = time_warp_seq; 649355da1ebSSage Weil } else { 650355da1ebSSage Weil warn = 1; 651355da1ebSSage Weil } 652355da1ebSSage Weil } 653355da1ebSSage Weil if (warn) /* time_warp_seq shouldn't go backwards */ 654355da1ebSSage Weil dout("%p mds time_warp_seq %llu < %u\n", 655355da1ebSSage Weil inode, time_warp_seq, ci->i_time_warp_seq); 656355da1ebSSage Weil } 657355da1ebSSage Weil 658355da1ebSSage Weil /* 659355da1ebSSage Weil * Populate an inode based on info from mds. May be called on new or 660355da1ebSSage Weil * existing inodes. 661355da1ebSSage Weil */ 66201deead0SYan, Zheng static int fill_inode(struct inode *inode, struct page *locked_page, 663355da1ebSSage Weil struct ceph_mds_reply_info_in *iinfo, 664355da1ebSSage Weil struct ceph_mds_reply_dirfrag *dirinfo, 665355da1ebSSage Weil struct ceph_mds_session *session, 666355da1ebSSage Weil unsigned long ttl_from, int cap_fmode, 667355da1ebSSage Weil struct ceph_cap_reservation *caps_reservation) 668355da1ebSSage Weil { 669d9df2783SYan, Zheng struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; 670355da1ebSSage Weil struct ceph_mds_reply_inode *info = iinfo->in; 671355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 672f98a128aSYan, Zheng int issued = 0, implemented, new_issued; 673355da1ebSSage Weil struct timespec mtime, atime, ctime; 674355da1ebSSage Weil struct ceph_buffer *xattr_blob = NULL; 675d9df2783SYan, Zheng struct ceph_cap *new_cap = NULL; 676355da1ebSSage Weil int err = 0; 677d9df2783SYan, Zheng bool wake = false; 678f98a128aSYan, Zheng bool queue_trunc = false; 679f98a128aSYan, Zheng bool new_version = false; 68031c542a1SYan, Zheng bool fill_inline = false; 681355da1ebSSage Weil 682355da1ebSSage Weil dout("fill_inode %p ino %llx.%llx v %llu had %llu\n", 683355da1ebSSage Weil inode, ceph_vinop(inode), le64_to_cpu(info->version), 684355da1ebSSage Weil ci->i_version); 685355da1ebSSage Weil 686d9df2783SYan, Zheng /* prealloc new cap struct */ 687d9df2783SYan, Zheng if (info->cap.caps && ceph_snap(inode) == CEPH_NOSNAP) 688d9df2783SYan, Zheng new_cap = ceph_get_cap(mdsc, caps_reservation); 689d9df2783SYan, Zheng 690355da1ebSSage Weil /* 691355da1ebSSage Weil * prealloc xattr data, if it looks like we'll need it. only 692355da1ebSSage Weil * if len > 4 (meaning there are actually xattrs; the first 4 693355da1ebSSage Weil * bytes are the xattr count). 694355da1ebSSage Weil */ 695355da1ebSSage Weil if (iinfo->xattr_len > 4) { 696b6c1d5b8SSage Weil xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); 697355da1ebSSage Weil if (!xattr_blob) 698355da1ebSSage Weil pr_err("fill_inode ENOMEM xattr blob %d bytes\n", 699355da1ebSSage Weil iinfo->xattr_len); 700355da1ebSSage Weil } 701355da1ebSSage Weil 702be655596SSage Weil spin_lock(&ci->i_ceph_lock); 703355da1ebSSage Weil 704355da1ebSSage Weil /* 705355da1ebSSage Weil * provided version will be odd if inode value is projected, 7068bd59e01SSage Weil * even if stable. skip the update if we have newer stable 7078bd59e01SSage Weil * info (ours>=theirs, e.g. due to racing mds replies), unless 7088bd59e01SSage Weil * we are getting projected (unstable) info (in which case the 7098bd59e01SSage Weil * version is odd, and we want ours>theirs). 7108bd59e01SSage Weil * us them 7118bd59e01SSage Weil * 2 2 skip 7128bd59e01SSage Weil * 3 2 skip 7138bd59e01SSage Weil * 3 3 update 714355da1ebSSage Weil */ 715f98a128aSYan, Zheng if (ci->i_version == 0 || 716f98a128aSYan, Zheng ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 717f98a128aSYan, Zheng le64_to_cpu(info->version) > (ci->i_version & ~1))) 718f98a128aSYan, Zheng new_version = true; 719355da1ebSSage Weil 720355da1ebSSage Weil issued = __ceph_caps_issued(ci, &implemented); 721355da1ebSSage Weil issued |= implemented | __ceph_caps_dirty(ci); 722f98a128aSYan, Zheng new_issued = ~issued & le32_to_cpu(info->cap.caps); 723355da1ebSSage Weil 724355da1ebSSage Weil /* update inode */ 725355da1ebSSage Weil ci->i_version = le64_to_cpu(info->version); 726355da1ebSSage Weil inode->i_version++; 727355da1ebSSage Weil inode->i_rdev = le32_to_cpu(info->rdev); 728f98a128aSYan, Zheng inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; 729355da1ebSSage Weil 730f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && 731f98a128aSYan, Zheng (issued & CEPH_CAP_AUTH_EXCL) == 0) { 732355da1ebSSage Weil inode->i_mode = le32_to_cpu(info->mode); 733ab871b90SEric W. Biederman inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); 734ab871b90SEric W. Biederman inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); 735355da1ebSSage Weil dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, 736bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 737bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid)); 738355da1ebSSage Weil } 739355da1ebSSage Weil 740f98a128aSYan, Zheng if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && 741f98a128aSYan, Zheng (issued & CEPH_CAP_LINK_EXCL) == 0) 742bfe86848SMiklos Szeredi set_nlink(inode, le32_to_cpu(info->nlink)); 743355da1ebSSage Weil 744f98a128aSYan, Zheng if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { 745355da1ebSSage Weil /* be careful with mtime, atime, size */ 746355da1ebSSage Weil ceph_decode_timespec(&atime, &info->atime); 747355da1ebSSage Weil ceph_decode_timespec(&mtime, &info->mtime); 748355da1ebSSage Weil ceph_decode_timespec(&ctime, &info->ctime); 749f98a128aSYan, Zheng ceph_fill_file_time(inode, issued, 750f98a128aSYan, Zheng le32_to_cpu(info->time_warp_seq), 751f98a128aSYan, Zheng &ctime, &mtime, &atime); 752f98a128aSYan, Zheng } 753f98a128aSYan, Zheng 754f98a128aSYan, Zheng if (new_version || 755f98a128aSYan, Zheng (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { 756f98a128aSYan, Zheng ci->i_layout = info->layout; 757355da1ebSSage Weil queue_trunc = ceph_fill_file_size(inode, issued, 758355da1ebSSage Weil le32_to_cpu(info->truncate_seq), 759355da1ebSSage Weil le64_to_cpu(info->truncate_size), 760355da1ebSSage Weil le64_to_cpu(info->size)); 761f98a128aSYan, Zheng /* only update max_size on auth cap */ 762f98a128aSYan, Zheng if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && 763f98a128aSYan, Zheng ci->i_max_size != le64_to_cpu(info->max_size)) { 764f98a128aSYan, Zheng dout("max_size %lld -> %llu\n", ci->i_max_size, 765f98a128aSYan, Zheng le64_to_cpu(info->max_size)); 766f98a128aSYan, Zheng ci->i_max_size = le64_to_cpu(info->max_size); 767f98a128aSYan, Zheng } 768f98a128aSYan, Zheng } 769355da1ebSSage Weil 770355da1ebSSage Weil /* xattrs */ 771355da1ebSSage Weil /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ 772508b32d8SYan, Zheng if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && 773355da1ebSSage Weil le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { 774355da1ebSSage Weil if (ci->i_xattrs.blob) 775355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 776355da1ebSSage Weil ci->i_xattrs.blob = xattr_blob; 777355da1ebSSage Weil if (xattr_blob) 778355da1ebSSage Weil memcpy(ci->i_xattrs.blob->vec.iov_base, 779355da1ebSSage Weil iinfo->xattr_data, iinfo->xattr_len); 780355da1ebSSage Weil ci->i_xattrs.version = le64_to_cpu(info->xattr_version); 7817221fe4cSGuangliang Zhao ceph_forget_all_cached_acls(inode); 782a6424e48SSage Weil xattr_blob = NULL; 783355da1ebSSage Weil } 784355da1ebSSage Weil 785355da1ebSSage Weil inode->i_mapping->a_ops = &ceph_aops; 786355da1ebSSage Weil inode->i_mapping->backing_dev_info = 787640ef79dSCheng Renquan &ceph_sb_to_client(inode->i_sb)->backing_dev_info; 788355da1ebSSage Weil 789355da1ebSSage Weil switch (inode->i_mode & S_IFMT) { 790355da1ebSSage Weil case S_IFIFO: 791355da1ebSSage Weil case S_IFBLK: 792355da1ebSSage Weil case S_IFCHR: 793355da1ebSSage Weil case S_IFSOCK: 794355da1ebSSage Weil init_special_inode(inode, inode->i_mode, inode->i_rdev); 795355da1ebSSage Weil inode->i_op = &ceph_file_iops; 796355da1ebSSage Weil break; 797355da1ebSSage Weil case S_IFREG: 798355da1ebSSage Weil inode->i_op = &ceph_file_iops; 799355da1ebSSage Weil inode->i_fop = &ceph_file_fops; 800355da1ebSSage Weil break; 801355da1ebSSage Weil case S_IFLNK: 802355da1ebSSage Weil inode->i_op = &ceph_symlink_iops; 803355da1ebSSage Weil if (!ci->i_symlink) { 804810339ecSXi Wang u32 symlen = iinfo->symlink_len; 805355da1ebSSage Weil char *sym; 806355da1ebSSage Weil 807be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 808355da1ebSSage Weil 809810339ecSXi Wang err = -EINVAL; 810810339ecSXi Wang if (WARN_ON(symlen != inode->i_size)) 811810339ecSXi Wang goto out; 812810339ecSXi Wang 813355da1ebSSage Weil err = -ENOMEM; 814810339ecSXi Wang sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); 815355da1ebSSage Weil if (!sym) 816355da1ebSSage Weil goto out; 817355da1ebSSage Weil 818be655596SSage Weil spin_lock(&ci->i_ceph_lock); 819355da1ebSSage Weil if (!ci->i_symlink) 820355da1ebSSage Weil ci->i_symlink = sym; 821355da1ebSSage Weil else 822355da1ebSSage Weil kfree(sym); /* lost a race */ 823355da1ebSSage Weil } 824355da1ebSSage Weil break; 825355da1ebSSage Weil case S_IFDIR: 826355da1ebSSage Weil inode->i_op = &ceph_dir_iops; 827355da1ebSSage Weil inode->i_fop = &ceph_dir_fops; 828355da1ebSSage Weil 82914303d20SSage Weil ci->i_dir_layout = iinfo->dir_layout; 83014303d20SSage Weil 831355da1ebSSage Weil ci->i_files = le64_to_cpu(info->files); 832355da1ebSSage Weil ci->i_subdirs = le64_to_cpu(info->subdirs); 833355da1ebSSage Weil ci->i_rbytes = le64_to_cpu(info->rbytes); 834355da1ebSSage Weil ci->i_rfiles = le64_to_cpu(info->rfiles); 835355da1ebSSage Weil ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); 836355da1ebSSage Weil ceph_decode_timespec(&ci->i_rctime, &info->rctime); 837355da1ebSSage Weil break; 838355da1ebSSage Weil default: 839355da1ebSSage Weil pr_err("fill_inode %llx.%llx BAD mode 0%o\n", 840355da1ebSSage Weil ceph_vinop(inode), inode->i_mode); 841355da1ebSSage Weil } 842355da1ebSSage Weil 843a8673d61SYan, Zheng /* set dir completion flag? */ 844a8673d61SYan, Zheng if (S_ISDIR(inode->i_mode) && 845a8673d61SYan, Zheng ci->i_files == 0 && ci->i_subdirs == 0 && 846a8673d61SYan, Zheng ceph_snap(inode) == CEPH_NOSNAP && 847a8673d61SYan, Zheng (le32_to_cpu(info->cap.caps) & CEPH_CAP_FILE_SHARED) && 848a8673d61SYan, Zheng (issued & CEPH_CAP_FILE_EXCL) == 0 && 8492f276c51SYan, Zheng !__ceph_dir_is_complete(ci)) { 850a8673d61SYan, Zheng dout(" marking %p complete (empty)\n", inode); 85170db4f36SYan, Zheng __ceph_dir_set_complete(ci, atomic_read(&ci->i_release_count), 85270db4f36SYan, Zheng ci->i_ordered_count); 853a8673d61SYan, Zheng } 854355da1ebSSage Weil 855355da1ebSSage Weil /* were we issued a capability? */ 856355da1ebSSage Weil if (info->cap.caps) { 857355da1ebSSage Weil if (ceph_snap(inode) == CEPH_NOSNAP) { 858355da1ebSSage Weil ceph_add_cap(inode, session, 859355da1ebSSage Weil le64_to_cpu(info->cap.cap_id), 860355da1ebSSage Weil cap_fmode, 861355da1ebSSage Weil le32_to_cpu(info->cap.caps), 862355da1ebSSage Weil le32_to_cpu(info->cap.wanted), 863355da1ebSSage Weil le32_to_cpu(info->cap.seq), 864355da1ebSSage Weil le32_to_cpu(info->cap.mseq), 865355da1ebSSage Weil le64_to_cpu(info->cap.realm), 866d9df2783SYan, Zheng info->cap.flags, &new_cap); 867d9df2783SYan, Zheng wake = true; 868355da1ebSSage Weil } else { 869355da1ebSSage Weil dout(" %p got snap_caps %s\n", inode, 870355da1ebSSage Weil ceph_cap_string(le32_to_cpu(info->cap.caps))); 871355da1ebSSage Weil ci->i_snap_caps |= le32_to_cpu(info->cap.caps); 872355da1ebSSage Weil if (cap_fmode >= 0) 873355da1ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 874355da1ebSSage Weil } 87504d000ebSSage Weil } else if (cap_fmode >= 0) { 876f3ae1b97SFabian Frederick pr_warn("mds issued no caps on %llx.%llx\n", 87704d000ebSSage Weil ceph_vinop(inode)); 87804d000ebSSage Weil __ceph_get_fmode(ci, cap_fmode); 879355da1ebSSage Weil } 88031c542a1SYan, Zheng 88131c542a1SYan, Zheng if (iinfo->inline_version > 0 && 88231c542a1SYan, Zheng iinfo->inline_version >= ci->i_inline_version) { 88331c542a1SYan, Zheng int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; 88431c542a1SYan, Zheng ci->i_inline_version = iinfo->inline_version; 88531c542a1SYan, Zheng if (ci->i_inline_version != CEPH_INLINE_NONE && 88601deead0SYan, Zheng (locked_page || 88701deead0SYan, Zheng (le32_to_cpu(info->cap.caps) & cache_caps))) 88831c542a1SYan, Zheng fill_inline = true; 88931c542a1SYan, Zheng } 89031c542a1SYan, Zheng 891355da1ebSSage Weil spin_unlock(&ci->i_ceph_lock); 892355da1ebSSage Weil 89331c542a1SYan, Zheng if (fill_inline) 89401deead0SYan, Zheng ceph_fill_inline_data(inode, locked_page, 89531c542a1SYan, Zheng iinfo->inline_data, iinfo->inline_len); 89631c542a1SYan, Zheng 897d9df2783SYan, Zheng if (wake) 898d9df2783SYan, Zheng wake_up_all(&ci->i_cap_wq); 899d9df2783SYan, Zheng 900355da1ebSSage Weil /* queue truncate if we saw i_size decrease */ 901355da1ebSSage Weil if (queue_trunc) 902355da1ebSSage Weil ceph_queue_vmtruncate(inode); 903355da1ebSSage Weil 904355da1ebSSage Weil /* populate frag tree */ 9053e7fbe9cSYan, Zheng if (S_ISDIR(inode->i_mode)) 9063e7fbe9cSYan, Zheng ceph_fill_fragtree(inode, &info->fragtree, dirinfo); 907355da1ebSSage Weil 908355da1ebSSage Weil /* update delegation info? */ 909355da1ebSSage Weil if (dirinfo) 910355da1ebSSage Weil ceph_fill_dirfrag(inode, dirinfo); 911355da1ebSSage Weil 912355da1ebSSage Weil err = 0; 913355da1ebSSage Weil out: 914d9df2783SYan, Zheng if (new_cap) 915d9df2783SYan, Zheng ceph_put_cap(mdsc, new_cap); 916b6c1d5b8SSage Weil if (xattr_blob) 917355da1ebSSage Weil ceph_buffer_put(xattr_blob); 918355da1ebSSage Weil return err; 919355da1ebSSage Weil } 920355da1ebSSage Weil 921355da1ebSSage Weil /* 922355da1ebSSage Weil * caller should hold session s_mutex. 923355da1ebSSage Weil */ 924355da1ebSSage Weil static void update_dentry_lease(struct dentry *dentry, 925355da1ebSSage Weil struct ceph_mds_reply_lease *lease, 926355da1ebSSage Weil struct ceph_mds_session *session, 927355da1ebSSage Weil unsigned long from_time) 928355da1ebSSage Weil { 929355da1ebSSage Weil struct ceph_dentry_info *di = ceph_dentry(dentry); 930355da1ebSSage Weil long unsigned duration = le32_to_cpu(lease->duration_ms); 931355da1ebSSage Weil long unsigned ttl = from_time + (duration * HZ) / 1000; 932355da1ebSSage Weil long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; 933355da1ebSSage Weil struct inode *dir; 934355da1ebSSage Weil 935355da1ebSSage Weil /* only track leases on regular dentries */ 936355da1ebSSage Weil if (dentry->d_op != &ceph_dentry_ops) 937355da1ebSSage Weil return; 938355da1ebSSage Weil 939355da1ebSSage Weil spin_lock(&dentry->d_lock); 9402f90b852SSage Weil dout("update_dentry_lease %p duration %lu ms ttl %lu\n", 9412f90b852SSage Weil dentry, duration, ttl); 942355da1ebSSage Weil 943355da1ebSSage Weil /* make lease_rdcache_gen match directory */ 944355da1ebSSage Weil dir = dentry->d_parent->d_inode; 945355da1ebSSage Weil di->lease_shared_gen = ceph_inode(dir)->i_shared_gen; 946355da1ebSSage Weil 9472f90b852SSage Weil if (duration == 0) 948355da1ebSSage Weil goto out_unlock; 949355da1ebSSage Weil 950355da1ebSSage Weil if (di->lease_gen == session->s_cap_gen && 951355da1ebSSage Weil time_before(ttl, dentry->d_time)) 952355da1ebSSage Weil goto out_unlock; /* we already have a newer lease. */ 953355da1ebSSage Weil 954355da1ebSSage Weil if (di->lease_session && di->lease_session != session) 955355da1ebSSage Weil goto out_unlock; 956355da1ebSSage Weil 957355da1ebSSage Weil ceph_dentry_lru_touch(dentry); 958355da1ebSSage Weil 959355da1ebSSage Weil if (!di->lease_session) 960355da1ebSSage Weil di->lease_session = ceph_get_mds_session(session); 961355da1ebSSage Weil di->lease_gen = session->s_cap_gen; 962355da1ebSSage Weil di->lease_seq = le32_to_cpu(lease->seq); 963355da1ebSSage Weil di->lease_renew_after = half_ttl; 964355da1ebSSage Weil di->lease_renew_from = 0; 965355da1ebSSage Weil dentry->d_time = ttl; 966355da1ebSSage Weil out_unlock: 967355da1ebSSage Weil spin_unlock(&dentry->d_lock); 968355da1ebSSage Weil return; 969355da1ebSSage Weil } 970355da1ebSSage Weil 971355da1ebSSage Weil /* 9721cd3935bSSage Weil * splice a dentry to an inode. 9731cd3935bSSage Weil * caller must hold directory i_mutex for this to be safe. 9741cd3935bSSage Weil * 9751cd3935bSSage Weil * we will only rehash the resulting dentry if @prehash is 9761cd3935bSSage Weil * true; @prehash will be set to false (for the benefit of 9771cd3935bSSage Weil * the caller) if we fail. 9781cd3935bSSage Weil */ 9791cd3935bSSage Weil static struct dentry *splice_dentry(struct dentry *dn, struct inode *in, 9800a8a70f9SYan, Zheng bool *prehash) 9811cd3935bSSage Weil { 9821cd3935bSSage Weil struct dentry *realdn; 9831cd3935bSSage Weil 9841cd3935bSSage Weil BUG_ON(dn->d_inode); 9851cd3935bSSage Weil 9861cd3935bSSage Weil /* dn must be unhashed */ 9871cd3935bSSage Weil if (!d_unhashed(dn)) 9881cd3935bSSage Weil d_drop(dn); 98941d28bcaSAl Viro realdn = d_splice_alias(in, dn); 9901cd3935bSSage Weil if (IS_ERR(realdn)) { 991d69ed05aSSage Weil pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", 992d69ed05aSSage Weil PTR_ERR(realdn), dn, in, ceph_vinop(in)); 9931cd3935bSSage Weil if (prehash) 9941cd3935bSSage Weil *prehash = false; /* don't rehash on error */ 9951cd3935bSSage Weil dn = realdn; /* note realdn contains the error */ 9961cd3935bSSage Weil goto out; 9971cd3935bSSage Weil } else if (realdn) { 9981cd3935bSSage Weil dout("dn %p (%d) spliced with %p (%d) " 9991cd3935bSSage Weil "inode %p ino %llx.%llx\n", 100084d08fa8SAl Viro dn, d_count(dn), 100184d08fa8SAl Viro realdn, d_count(realdn), 10021cd3935bSSage Weil realdn->d_inode, ceph_vinop(realdn->d_inode)); 10031cd3935bSSage Weil dput(dn); 10041cd3935bSSage Weil dn = realdn; 10051cd3935bSSage Weil } else { 10061cd3935bSSage Weil BUG_ON(!ceph_dentry(dn)); 10071cd3935bSSage Weil dout("dn %p attached to %p ino %llx.%llx\n", 10081cd3935bSSage Weil dn, dn->d_inode, ceph_vinop(dn->d_inode)); 10091cd3935bSSage Weil } 10101cd3935bSSage Weil if ((!prehash || *prehash) && d_unhashed(dn)) 10111cd3935bSSage Weil d_rehash(dn); 10121cd3935bSSage Weil out: 10131cd3935bSSage Weil return dn; 10141cd3935bSSage Weil } 10151cd3935bSSage Weil 10161cd3935bSSage Weil /* 1017355da1ebSSage Weil * Incorporate results into the local cache. This is either just 1018355da1ebSSage Weil * one inode, or a directory, dentry, and possibly linked-to inode (e.g., 1019355da1ebSSage Weil * after a lookup). 1020355da1ebSSage Weil * 1021355da1ebSSage Weil * A reply may contain 1022355da1ebSSage Weil * a directory inode along with a dentry. 1023355da1ebSSage Weil * and/or a target inode 1024355da1ebSSage Weil * 1025355da1ebSSage Weil * Called with snap_rwsem (read). 1026355da1ebSSage Weil */ 1027355da1ebSSage Weil int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, 1028355da1ebSSage Weil struct ceph_mds_session *session) 1029355da1ebSSage Weil { 1030355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1031355da1ebSSage Weil struct inode *in = NULL; 1032355da1ebSSage Weil struct ceph_vino vino; 10333d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(sb); 1034355da1ebSSage Weil int err = 0; 1035355da1ebSSage Weil 1036355da1ebSSage Weil dout("fill_trace %p is_dentry %d is_target %d\n", req, 1037355da1ebSSage Weil rinfo->head->is_dentry, rinfo->head->is_target); 1038355da1ebSSage Weil 1039355da1ebSSage Weil #if 0 1040355da1ebSSage Weil /* 1041355da1ebSSage Weil * Debugging hook: 1042355da1ebSSage Weil * 1043355da1ebSSage Weil * If we resend completed ops to a recovering mds, we get no 1044355da1ebSSage Weil * trace. Since that is very rare, pretend this is the case 1045355da1ebSSage Weil * to ensure the 'no trace' handlers in the callers behave. 1046355da1ebSSage Weil * 1047355da1ebSSage Weil * Fill in inodes unconditionally to avoid breaking cap 1048355da1ebSSage Weil * invariants. 1049355da1ebSSage Weil */ 1050355da1ebSSage Weil if (rinfo->head->op & CEPH_MDS_OP_WRITE) { 1051355da1ebSSage Weil pr_info("fill_trace faking empty trace on %lld %s\n", 1052355da1ebSSage Weil req->r_tid, ceph_mds_op_name(rinfo->head->op)); 1053355da1ebSSage Weil if (rinfo->head->is_dentry) { 1054355da1ebSSage Weil rinfo->head->is_dentry = 0; 1055355da1ebSSage Weil err = fill_inode(req->r_locked_dir, 1056355da1ebSSage Weil &rinfo->diri, rinfo->dirfrag, 1057355da1ebSSage Weil session, req->r_request_started, -1); 1058355da1ebSSage Weil } 1059355da1ebSSage Weil if (rinfo->head->is_target) { 1060355da1ebSSage Weil rinfo->head->is_target = 0; 1061355da1ebSSage Weil ininfo = rinfo->targeti.in; 1062355da1ebSSage Weil vino.ino = le64_to_cpu(ininfo->ino); 1063355da1ebSSage Weil vino.snap = le64_to_cpu(ininfo->snapid); 1064355da1ebSSage Weil in = ceph_get_inode(sb, vino); 1065355da1ebSSage Weil err = fill_inode(in, &rinfo->targeti, NULL, 1066355da1ebSSage Weil session, req->r_request_started, 1067355da1ebSSage Weil req->r_fmode); 1068355da1ebSSage Weil iput(in); 1069355da1ebSSage Weil } 1070355da1ebSSage Weil } 1071355da1ebSSage Weil #endif 1072355da1ebSSage Weil 1073355da1ebSSage Weil if (!rinfo->head->is_target && !rinfo->head->is_dentry) { 1074355da1ebSSage Weil dout("fill_trace reply is empty!\n"); 1075167c9e35SSage Weil if (rinfo->head->result == 0 && req->r_locked_dir) 1076167c9e35SSage Weil ceph_invalidate_dir_request(req); 1077355da1ebSSage Weil return 0; 1078355da1ebSSage Weil } 1079355da1ebSSage Weil 1080355da1ebSSage Weil if (rinfo->head->is_dentry) { 10815b1daecdSSage Weil struct inode *dir = req->r_locked_dir; 10825b1daecdSSage Weil 10836c5e50faSSage Weil if (dir) { 108401deead0SYan, Zheng err = fill_inode(dir, NULL, 108501deead0SYan, Zheng &rinfo->diri, rinfo->dirfrag, 10865b1daecdSSage Weil session, req->r_request_started, -1, 10875b1daecdSSage Weil &req->r_caps_reservation); 10885b1daecdSSage Weil if (err < 0) 108919913b4eSYan, Zheng goto done; 10906c5e50faSSage Weil } else { 10916c5e50faSSage Weil WARN_ON_ONCE(1); 10926c5e50faSSage Weil } 109319913b4eSYan, Zheng 109419913b4eSYan, Zheng if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) { 109519913b4eSYan, Zheng struct qstr dname; 109619913b4eSYan, Zheng struct dentry *dn, *parent; 109719913b4eSYan, Zheng 109819913b4eSYan, Zheng BUG_ON(!rinfo->head->is_target); 109919913b4eSYan, Zheng BUG_ON(req->r_dentry); 110019913b4eSYan, Zheng 110119913b4eSYan, Zheng parent = d_find_any_alias(dir); 110219913b4eSYan, Zheng BUG_ON(!parent); 110319913b4eSYan, Zheng 110419913b4eSYan, Zheng dname.name = rinfo->dname; 110519913b4eSYan, Zheng dname.len = rinfo->dname_len; 110619913b4eSYan, Zheng dname.hash = full_name_hash(dname.name, dname.len); 110719913b4eSYan, Zheng vino.ino = le64_to_cpu(rinfo->targeti.in->ino); 110819913b4eSYan, Zheng vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 110919913b4eSYan, Zheng retry_lookup: 111019913b4eSYan, Zheng dn = d_lookup(parent, &dname); 111119913b4eSYan, Zheng dout("d_lookup on parent=%p name=%.*s got %p\n", 111219913b4eSYan, Zheng parent, dname.len, dname.name, dn); 111319913b4eSYan, Zheng 111419913b4eSYan, Zheng if (!dn) { 111519913b4eSYan, Zheng dn = d_alloc(parent, &dname); 111619913b4eSYan, Zheng dout("d_alloc %p '%.*s' = %p\n", parent, 111719913b4eSYan, Zheng dname.len, dname.name, dn); 111819913b4eSYan, Zheng if (dn == NULL) { 111919913b4eSYan, Zheng dput(parent); 112019913b4eSYan, Zheng err = -ENOMEM; 112119913b4eSYan, Zheng goto done; 112219913b4eSYan, Zheng } 112319913b4eSYan, Zheng err = ceph_init_dentry(dn); 112419913b4eSYan, Zheng if (err < 0) { 112519913b4eSYan, Zheng dput(dn); 112619913b4eSYan, Zheng dput(parent); 112719913b4eSYan, Zheng goto done; 112819913b4eSYan, Zheng } 112919913b4eSYan, Zheng } else if (dn->d_inode && 113019913b4eSYan, Zheng (ceph_ino(dn->d_inode) != vino.ino || 113119913b4eSYan, Zheng ceph_snap(dn->d_inode) != vino.snap)) { 113219913b4eSYan, Zheng dout(" dn %p points to wrong inode %p\n", 113319913b4eSYan, Zheng dn, dn->d_inode); 113419913b4eSYan, Zheng d_delete(dn); 113519913b4eSYan, Zheng dput(dn); 113619913b4eSYan, Zheng goto retry_lookup; 113719913b4eSYan, Zheng } 113819913b4eSYan, Zheng 113919913b4eSYan, Zheng req->r_dentry = dn; 114019913b4eSYan, Zheng dput(parent); 114119913b4eSYan, Zheng } 11425b1daecdSSage Weil } 11435b1daecdSSage Weil 114486b58d13SYan, Zheng if (rinfo->head->is_target) { 114586b58d13SYan, Zheng vino.ino = le64_to_cpu(rinfo->targeti.in->ino); 114686b58d13SYan, Zheng vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); 114786b58d13SYan, Zheng 114886b58d13SYan, Zheng in = ceph_get_inode(sb, vino); 114986b58d13SYan, Zheng if (IS_ERR(in)) { 115086b58d13SYan, Zheng err = PTR_ERR(in); 115186b58d13SYan, Zheng goto done; 115286b58d13SYan, Zheng } 115386b58d13SYan, Zheng req->r_target_inode = in; 115486b58d13SYan, Zheng 115501deead0SYan, Zheng err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL, 115686b58d13SYan, Zheng session, req->r_request_started, 115748193012SYan, Zheng (!req->r_aborted && rinfo->head->result == 0) ? 115886b58d13SYan, Zheng req->r_fmode : -1, 115986b58d13SYan, Zheng &req->r_caps_reservation); 116086b58d13SYan, Zheng if (err < 0) { 116186b58d13SYan, Zheng pr_err("fill_inode badness %p %llx.%llx\n", 116286b58d13SYan, Zheng in, ceph_vinop(in)); 116386b58d13SYan, Zheng goto done; 116486b58d13SYan, Zheng } 116586b58d13SYan, Zheng } 116686b58d13SYan, Zheng 11679358c6d4SSage Weil /* 11689358c6d4SSage Weil * ignore null lease/binding on snapdir ENOENT, or else we 11699358c6d4SSage Weil * will have trouble splicing in the virtual snapdir later 11709358c6d4SSage Weil */ 11719358c6d4SSage Weil if (rinfo->head->is_dentry && !req->r_aborted && 11726c5e50faSSage Weil req->r_locked_dir && 11739358c6d4SSage Weil (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, 11743d14c5d2SYehuda Sadeh fsc->mount_options->snapdir_name, 11759358c6d4SSage Weil req->r_dentry->d_name.len))) { 1176355da1ebSSage Weil /* 1177355da1ebSSage Weil * lookup link rename : null -> possibly existing inode 1178355da1ebSSage Weil * mknod symlink mkdir : null -> new inode 1179355da1ebSSage Weil * unlink : linked -> null 1180355da1ebSSage Weil */ 1181355da1ebSSage Weil struct inode *dir = req->r_locked_dir; 1182355da1ebSSage Weil struct dentry *dn = req->r_dentry; 1183355da1ebSSage Weil bool have_dir_cap, have_lease; 1184355da1ebSSage Weil 1185355da1ebSSage Weil BUG_ON(!dn); 1186355da1ebSSage Weil BUG_ON(!dir); 1187355da1ebSSage Weil BUG_ON(dn->d_parent->d_inode != dir); 1188355da1ebSSage Weil BUG_ON(ceph_ino(dir) != 1189355da1ebSSage Weil le64_to_cpu(rinfo->diri.in->ino)); 1190355da1ebSSage Weil BUG_ON(ceph_snap(dir) != 1191355da1ebSSage Weil le64_to_cpu(rinfo->diri.in->snapid)); 1192355da1ebSSage Weil 1193355da1ebSSage Weil /* do we have a lease on the whole dir? */ 1194355da1ebSSage Weil have_dir_cap = 1195355da1ebSSage Weil (le32_to_cpu(rinfo->diri.in->cap.caps) & 1196355da1ebSSage Weil CEPH_CAP_FILE_SHARED); 1197355da1ebSSage Weil 1198355da1ebSSage Weil /* do we have a dn lease? */ 1199355da1ebSSage Weil have_lease = have_dir_cap || 12002f90b852SSage Weil le32_to_cpu(rinfo->dlease->duration_ms); 1201355da1ebSSage Weil if (!have_lease) 1202355da1ebSSage Weil dout("fill_trace no dentry lease or dir cap\n"); 1203355da1ebSSage Weil 1204355da1ebSSage Weil /* rename? */ 1205355da1ebSSage Weil if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { 12060a8a70f9SYan, Zheng struct inode *olddir = req->r_old_dentry_dir; 12070a8a70f9SYan, Zheng BUG_ON(!olddir); 12080a8a70f9SYan, Zheng 1209a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1210355da1ebSSage Weil req->r_old_dentry, 1211a455589fSAl Viro req->r_old_dentry, 1212a455589fSAl Viro dn, dn); 1213355da1ebSSage Weil dout("fill_trace doing d_move %p -> %p\n", 1214355da1ebSSage Weil req->r_old_dentry, dn); 1215c10f5e12SSage Weil 1216355da1ebSSage Weil d_move(req->r_old_dentry, dn); 1217a455589fSAl Viro dout(" src %p '%pd' dst %p '%pd'\n", 1218355da1ebSSage Weil req->r_old_dentry, 1219a455589fSAl Viro req->r_old_dentry, 1220a455589fSAl Viro dn, dn); 122181a6cf2dSSage Weil 1222c4a29f26SSage Weil /* ensure target dentry is invalidated, despite 1223c4a29f26SSage Weil rehashing bug in vfs_rename_dir */ 122481a6cf2dSSage Weil ceph_invalidate_dentry_lease(dn); 122581a6cf2dSSage Weil 12260a8a70f9SYan, Zheng /* d_move screws up sibling dentries' offsets */ 122770db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 122870db4f36SYan, Zheng ceph_dir_clear_ordered(olddir); 12290a8a70f9SYan, Zheng 123009adc80cSSage Weil dout("dn %p gets new offset %lld\n", req->r_old_dentry, 12311cd3935bSSage Weil ceph_dentry(req->r_old_dentry)->offset); 123281a6cf2dSSage Weil 1233355da1ebSSage Weil dn = req->r_old_dentry; /* use old_dentry */ 1234355da1ebSSage Weil } 1235355da1ebSSage Weil 1236355da1ebSSage Weil /* null dentry? */ 1237355da1ebSSage Weil if (!rinfo->head->is_target) { 1238355da1ebSSage Weil dout("fill_trace null dentry\n"); 1239355da1ebSSage Weil if (dn->d_inode) { 124070db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 1241355da1ebSSage Weil dout("d_delete %p\n", dn); 1242355da1ebSSage Weil d_delete(dn); 1243355da1ebSSage Weil } else { 1244355da1ebSSage Weil dout("d_instantiate %p NULL\n", dn); 1245355da1ebSSage Weil d_instantiate(dn, NULL); 1246355da1ebSSage Weil if (have_lease && d_unhashed(dn)) 1247355da1ebSSage Weil d_rehash(dn); 1248355da1ebSSage Weil update_dentry_lease(dn, rinfo->dlease, 1249355da1ebSSage Weil session, 1250355da1ebSSage Weil req->r_request_started); 1251355da1ebSSage Weil } 1252355da1ebSSage Weil goto done; 1253355da1ebSSage Weil } 1254355da1ebSSage Weil 1255355da1ebSSage Weil /* attach proper inode */ 125686b58d13SYan, Zheng if (!dn->d_inode) { 125770db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 125886b58d13SYan, Zheng ihold(in); 12590a8a70f9SYan, Zheng dn = splice_dentry(dn, in, &have_lease); 1260355da1ebSSage Weil if (IS_ERR(dn)) { 1261355da1ebSSage Weil err = PTR_ERR(dn); 1262355da1ebSSage Weil goto done; 1263355da1ebSSage Weil } 1264355da1ebSSage Weil req->r_dentry = dn; /* may have spliced */ 126586b58d13SYan, Zheng } else if (dn->d_inode && dn->d_inode != in) { 1266355da1ebSSage Weil dout(" %p links to %p %llx.%llx, not %llx.%llx\n", 126786b58d13SYan, Zheng dn, dn->d_inode, ceph_vinop(dn->d_inode), 126886b58d13SYan, Zheng ceph_vinop(in)); 1269355da1ebSSage Weil have_lease = false; 1270355da1ebSSage Weil } 1271355da1ebSSage Weil 1272355da1ebSSage Weil if (have_lease) 1273355da1ebSSage Weil update_dentry_lease(dn, rinfo->dlease, session, 1274355da1ebSSage Weil req->r_request_started); 1275355da1ebSSage Weil dout(" final dn %p\n", dn); 127686b58d13SYan, Zheng } else if (!req->r_aborted && 127786b58d13SYan, Zheng (req->r_op == CEPH_MDS_OP_LOOKUPSNAP || 127886b58d13SYan, Zheng req->r_op == CEPH_MDS_OP_MKSNAP)) { 1279355da1ebSSage Weil struct dentry *dn = req->r_dentry; 12800a8a70f9SYan, Zheng struct inode *dir = req->r_locked_dir; 1281355da1ebSSage Weil 1282355da1ebSSage Weil /* fill out a snapdir LOOKUPSNAP dentry */ 1283355da1ebSSage Weil BUG_ON(!dn); 12840a8a70f9SYan, Zheng BUG_ON(!dir); 12850a8a70f9SYan, Zheng BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); 1286355da1ebSSage Weil dout(" linking snapped dir %p to dn %p\n", in, dn); 128770db4f36SYan, Zheng ceph_dir_clear_ordered(dir); 128886b58d13SYan, Zheng ihold(in); 12890a8a70f9SYan, Zheng dn = splice_dentry(dn, in, NULL); 1290355da1ebSSage Weil if (IS_ERR(dn)) { 1291355da1ebSSage Weil err = PTR_ERR(dn); 1292355da1ebSSage Weil goto done; 1293355da1ebSSage Weil } 1294355da1ebSSage Weil req->r_dentry = dn; /* may have spliced */ 1295355da1ebSSage Weil } 1296355da1ebSSage Weil done: 1297355da1ebSSage Weil dout("fill_trace done err=%d\n", err); 1298355da1ebSSage Weil return err; 1299355da1ebSSage Weil } 1300355da1ebSSage Weil 1301355da1ebSSage Weil /* 1302355da1ebSSage Weil * Prepopulate our cache with readdir results, leases, etc. 1303355da1ebSSage Weil */ 130479f9f99aSSage Weil static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, 130579f9f99aSSage Weil struct ceph_mds_session *session) 130679f9f99aSSage Weil { 130779f9f99aSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 130879f9f99aSSage Weil int i, err = 0; 130979f9f99aSSage Weil 131079f9f99aSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 131179f9f99aSSage Weil struct ceph_vino vino; 131279f9f99aSSage Weil struct inode *in; 131379f9f99aSSage Weil int rc; 131479f9f99aSSage Weil 131579f9f99aSSage Weil vino.ino = le64_to_cpu(rinfo->dir_in[i].in->ino); 131679f9f99aSSage Weil vino.snap = le64_to_cpu(rinfo->dir_in[i].in->snapid); 131779f9f99aSSage Weil 131879f9f99aSSage Weil in = ceph_get_inode(req->r_dentry->d_sb, vino); 131979f9f99aSSage Weil if (IS_ERR(in)) { 132079f9f99aSSage Weil err = PTR_ERR(in); 132179f9f99aSSage Weil dout("new_inode badness got %d\n", err); 132279f9f99aSSage Weil continue; 132379f9f99aSSage Weil } 132401deead0SYan, Zheng rc = fill_inode(in, NULL, &rinfo->dir_in[i], NULL, session, 132579f9f99aSSage Weil req->r_request_started, -1, 132679f9f99aSSage Weil &req->r_caps_reservation); 132779f9f99aSSage Weil if (rc < 0) { 132879f9f99aSSage Weil pr_err("fill_inode badness on %p got %d\n", in, rc); 132979f9f99aSSage Weil err = rc; 133079f9f99aSSage Weil continue; 133179f9f99aSSage Weil } 133279f9f99aSSage Weil } 133379f9f99aSSage Weil 133479f9f99aSSage Weil return err; 133579f9f99aSSage Weil } 133679f9f99aSSage Weil 1337355da1ebSSage Weil int ceph_readdir_prepopulate(struct ceph_mds_request *req, 1338355da1ebSSage Weil struct ceph_mds_session *session) 1339355da1ebSSage Weil { 1340355da1ebSSage Weil struct dentry *parent = req->r_dentry; 1341355da1ebSSage Weil struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; 1342355da1ebSSage Weil struct qstr dname; 1343355da1ebSSage Weil struct dentry *dn; 1344355da1ebSSage Weil struct inode *in; 134586b58d13SYan, Zheng int err = 0, ret, i; 1346355da1ebSSage Weil struct inode *snapdir = NULL; 1347355da1ebSSage Weil struct ceph_mds_request_head *rhead = req->r_request->front.iov_base; 1348355da1ebSSage Weil struct ceph_dentry_info *di; 134981c6aea5SYan, Zheng u64 r_readdir_offset = req->r_readdir_offset; 135081c6aea5SYan, Zheng u32 frag = le32_to_cpu(rhead->args.readdir.frag); 135181c6aea5SYan, Zheng 135281c6aea5SYan, Zheng if (rinfo->dir_dir && 135381c6aea5SYan, Zheng le32_to_cpu(rinfo->dir_dir->frag) != frag) { 135481c6aea5SYan, Zheng dout("readdir_prepopulate got new frag %x -> %x\n", 135581c6aea5SYan, Zheng frag, le32_to_cpu(rinfo->dir_dir->frag)); 135681c6aea5SYan, Zheng frag = le32_to_cpu(rinfo->dir_dir->frag); 135781c6aea5SYan, Zheng if (ceph_frag_is_leftmost(frag)) 135881c6aea5SYan, Zheng r_readdir_offset = 2; 135981c6aea5SYan, Zheng else 136081c6aea5SYan, Zheng r_readdir_offset = 0; 136181c6aea5SYan, Zheng } 1362355da1ebSSage Weil 136379f9f99aSSage Weil if (req->r_aborted) 136479f9f99aSSage Weil return readdir_prepopulate_inodes_only(req, session); 136579f9f99aSSage Weil 1366355da1ebSSage Weil if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { 1367355da1ebSSage Weil snapdir = ceph_get_snapdir(parent->d_inode); 1368355da1ebSSage Weil parent = d_find_alias(snapdir); 1369355da1ebSSage Weil dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", 1370355da1ebSSage Weil rinfo->dir_nr, parent); 1371355da1ebSSage Weil } else { 1372355da1ebSSage Weil dout("readdir_prepopulate %d items under dn %p\n", 1373355da1ebSSage Weil rinfo->dir_nr, parent); 1374355da1ebSSage Weil if (rinfo->dir_dir) 1375355da1ebSSage Weil ceph_fill_dirfrag(parent->d_inode, rinfo->dir_dir); 1376355da1ebSSage Weil } 1377355da1ebSSage Weil 137886b58d13SYan, Zheng /* FIXME: release caps/leases if error occurs */ 1379355da1ebSSage Weil for (i = 0; i < rinfo->dir_nr; i++) { 1380355da1ebSSage Weil struct ceph_vino vino; 1381355da1ebSSage Weil 1382355da1ebSSage Weil dname.name = rinfo->dir_dname[i]; 1383355da1ebSSage Weil dname.len = rinfo->dir_dname_len[i]; 1384355da1ebSSage Weil dname.hash = full_name_hash(dname.name, dname.len); 1385355da1ebSSage Weil 1386355da1ebSSage Weil vino.ino = le64_to_cpu(rinfo->dir_in[i].in->ino); 1387355da1ebSSage Weil vino.snap = le64_to_cpu(rinfo->dir_in[i].in->snapid); 1388355da1ebSSage Weil 1389355da1ebSSage Weil retry_lookup: 1390355da1ebSSage Weil dn = d_lookup(parent, &dname); 1391355da1ebSSage Weil dout("d_lookup on parent=%p name=%.*s got %p\n", 1392355da1ebSSage Weil parent, dname.len, dname.name, dn); 1393355da1ebSSage Weil 1394355da1ebSSage Weil if (!dn) { 1395355da1ebSSage Weil dn = d_alloc(parent, &dname); 1396355da1ebSSage Weil dout("d_alloc %p '%.*s' = %p\n", parent, 1397355da1ebSSage Weil dname.len, dname.name, dn); 1398355da1ebSSage Weil if (dn == NULL) { 1399355da1ebSSage Weil dout("d_alloc badness\n"); 1400355da1ebSSage Weil err = -ENOMEM; 1401355da1ebSSage Weil goto out; 1402355da1ebSSage Weil } 140386b58d13SYan, Zheng ret = ceph_init_dentry(dn); 140486b58d13SYan, Zheng if (ret < 0) { 14058c696737SSage Weil dput(dn); 140686b58d13SYan, Zheng err = ret; 1407355da1ebSSage Weil goto out; 14088c696737SSage Weil } 1409355da1ebSSage Weil } else if (dn->d_inode && 1410355da1ebSSage Weil (ceph_ino(dn->d_inode) != vino.ino || 1411355da1ebSSage Weil ceph_snap(dn->d_inode) != vino.snap)) { 1412355da1ebSSage Weil dout(" dn %p points to wrong inode %p\n", 1413355da1ebSSage Weil dn, dn->d_inode); 1414355da1ebSSage Weil d_delete(dn); 1415355da1ebSSage Weil dput(dn); 1416355da1ebSSage Weil goto retry_lookup; 1417355da1ebSSage Weil } else { 1418355da1ebSSage Weil /* reorder parent's d_subdirs */ 14192fd6b7f5SNick Piggin spin_lock(&parent->d_lock); 14202fd6b7f5SNick Piggin spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED); 1421946e51f2SAl Viro list_move(&dn->d_child, &parent->d_subdirs); 1422355da1ebSSage Weil spin_unlock(&dn->d_lock); 14232fd6b7f5SNick Piggin spin_unlock(&parent->d_lock); 1424355da1ebSSage Weil } 1425355da1ebSSage Weil 1426355da1ebSSage Weil /* inode */ 1427355da1ebSSage Weil if (dn->d_inode) { 1428355da1ebSSage Weil in = dn->d_inode; 1429355da1ebSSage Weil } else { 1430355da1ebSSage Weil in = ceph_get_inode(parent->d_sb, vino); 1431ac1f12efSDan Carpenter if (IS_ERR(in)) { 1432355da1ebSSage Weil dout("new_inode badness\n"); 14332744c171SAl Viro d_drop(dn); 1434355da1ebSSage Weil dput(dn); 1435ac1f12efSDan Carpenter err = PTR_ERR(in); 1436355da1ebSSage Weil goto out; 1437355da1ebSSage Weil } 1438355da1ebSSage Weil } 1439355da1ebSSage Weil 144001deead0SYan, Zheng if (fill_inode(in, NULL, &rinfo->dir_in[i], NULL, session, 1441355da1ebSSage Weil req->r_request_started, -1, 1442355da1ebSSage Weil &req->r_caps_reservation) < 0) { 1443355da1ebSSage Weil pr_err("fill_inode badness on %p\n", in); 144486b58d13SYan, Zheng if (!dn->d_inode) 144586b58d13SYan, Zheng iput(in); 144686b58d13SYan, Zheng d_drop(dn); 1447d69ed05aSSage Weil goto next_item; 1448355da1ebSSage Weil } 144986b58d13SYan, Zheng 145086b58d13SYan, Zheng if (!dn->d_inode) { 14510a8a70f9SYan, Zheng dn = splice_dentry(dn, in, NULL); 145286b58d13SYan, Zheng if (IS_ERR(dn)) { 145386b58d13SYan, Zheng err = PTR_ERR(dn); 145486b58d13SYan, Zheng dn = NULL; 145586b58d13SYan, Zheng goto next_item; 145686b58d13SYan, Zheng } 145786b58d13SYan, Zheng } 145886b58d13SYan, Zheng 145986b58d13SYan, Zheng di = dn->d_fsdata; 146086b58d13SYan, Zheng di->offset = ceph_make_fpos(frag, i + r_readdir_offset); 146186b58d13SYan, Zheng 1462355da1ebSSage Weil update_dentry_lease(dn, rinfo->dir_dlease[i], 1463d69ed05aSSage Weil req->r_session, 1464d69ed05aSSage Weil req->r_request_started); 1465d69ed05aSSage Weil next_item: 1466d69ed05aSSage Weil if (dn) 1467355da1ebSSage Weil dput(dn); 1468355da1ebSSage Weil } 146986b58d13SYan, Zheng if (err == 0) 1470355da1ebSSage Weil req->r_did_prepopulate = true; 1471355da1ebSSage Weil 1472355da1ebSSage Weil out: 1473355da1ebSSage Weil if (snapdir) { 1474355da1ebSSage Weil iput(snapdir); 1475355da1ebSSage Weil dput(parent); 1476355da1ebSSage Weil } 1477355da1ebSSage Weil dout("readdir_prepopulate done\n"); 1478355da1ebSSage Weil return err; 1479355da1ebSSage Weil } 1480355da1ebSSage Weil 1481355da1ebSSage Weil int ceph_inode_set_size(struct inode *inode, loff_t size) 1482355da1ebSSage Weil { 1483355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1484355da1ebSSage Weil int ret = 0; 1485355da1ebSSage Weil 1486be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1487355da1ebSSage Weil dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); 1488355da1ebSSage Weil inode->i_size = size; 1489355da1ebSSage Weil inode->i_blocks = (size + (1 << 9) - 1) >> 9; 1490355da1ebSSage Weil 1491355da1ebSSage Weil /* tell the MDS if we are approaching max_size */ 1492355da1ebSSage Weil if ((size << 1) >= ci->i_max_size && 1493355da1ebSSage Weil (ci->i_reported_size << 1) < ci->i_max_size) 1494355da1ebSSage Weil ret = 1; 1495355da1ebSSage Weil 1496be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1497355da1ebSSage Weil return ret; 1498355da1ebSSage Weil } 1499355da1ebSSage Weil 1500355da1ebSSage Weil /* 1501355da1ebSSage Weil * Write back inode data in a worker thread. (This can't be done 1502355da1ebSSage Weil * in the message handler context.) 1503355da1ebSSage Weil */ 15043c6f6b79SSage Weil void ceph_queue_writeback(struct inode *inode) 15053c6f6b79SSage Weil { 150615a2015fSSage Weil ihold(inode); 15073c6f6b79SSage Weil if (queue_work(ceph_inode_to_client(inode)->wb_wq, 15083c6f6b79SSage Weil &ceph_inode(inode)->i_wb_work)) { 15092c27c9a5SSage Weil dout("ceph_queue_writeback %p\n", inode); 15103c6f6b79SSage Weil } else { 15112c27c9a5SSage Weil dout("ceph_queue_writeback %p failed\n", inode); 151215a2015fSSage Weil iput(inode); 15133c6f6b79SSage Weil } 15143c6f6b79SSage Weil } 15153c6f6b79SSage Weil 15163c6f6b79SSage Weil static void ceph_writeback_work(struct work_struct *work) 1517355da1ebSSage Weil { 1518355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1519355da1ebSSage Weil i_wb_work); 1520355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1521355da1ebSSage Weil 1522355da1ebSSage Weil dout("writeback %p\n", inode); 1523355da1ebSSage Weil filemap_fdatawrite(&inode->i_data); 1524355da1ebSSage Weil iput(inode); 1525355da1ebSSage Weil } 1526355da1ebSSage Weil 1527355da1ebSSage Weil /* 15283c6f6b79SSage Weil * queue an async invalidation 15293c6f6b79SSage Weil */ 15303c6f6b79SSage Weil void ceph_queue_invalidate(struct inode *inode) 15313c6f6b79SSage Weil { 153215a2015fSSage Weil ihold(inode); 15333c6f6b79SSage Weil if (queue_work(ceph_inode_to_client(inode)->pg_inv_wq, 15343c6f6b79SSage Weil &ceph_inode(inode)->i_pg_inv_work)) { 15353c6f6b79SSage Weil dout("ceph_queue_invalidate %p\n", inode); 15363c6f6b79SSage Weil } else { 15373c6f6b79SSage Weil dout("ceph_queue_invalidate %p failed\n", inode); 153815a2015fSSage Weil iput(inode); 15393c6f6b79SSage Weil } 15403c6f6b79SSage Weil } 15413c6f6b79SSage Weil 15423c6f6b79SSage Weil /* 1543355da1ebSSage Weil * Invalidate inode pages in a worker thread. (This can't be done 1544355da1ebSSage Weil * in the message handler context.) 1545355da1ebSSage Weil */ 15463c6f6b79SSage Weil static void ceph_invalidate_work(struct work_struct *work) 1547355da1ebSSage Weil { 1548355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1549355da1ebSSage Weil i_pg_inv_work); 1550355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1551355da1ebSSage Weil u32 orig_gen; 1552355da1ebSSage Weil int check = 0; 1553355da1ebSSage Weil 1554b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1555be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1556355da1ebSSage Weil dout("invalidate_pages %p gen %d revoking %d\n", inode, 1557355da1ebSSage Weil ci->i_rdcache_gen, ci->i_rdcache_revoking); 1558cd045cb4SSage Weil if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { 15599563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 15609563f88cSYan, Zheng check = 1; 1561be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1562b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1563355da1ebSSage Weil goto out; 1564355da1ebSSage Weil } 1565355da1ebSSage Weil orig_gen = ci->i_rdcache_gen; 1566be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1567355da1ebSSage Weil 15684e217b5dSYan, Zheng truncate_pagecache(inode, 0); 1569355da1ebSSage Weil 1570be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1571cd045cb4SSage Weil if (orig_gen == ci->i_rdcache_gen && 1572cd045cb4SSage Weil orig_gen == ci->i_rdcache_revoking) { 1573355da1ebSSage Weil dout("invalidate_pages %p gen %d successful\n", inode, 1574355da1ebSSage Weil ci->i_rdcache_gen); 1575cd045cb4SSage Weil ci->i_rdcache_revoking--; 1576355da1ebSSage Weil check = 1; 1577355da1ebSSage Weil } else { 1578cd045cb4SSage Weil dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", 1579cd045cb4SSage Weil inode, orig_gen, ci->i_rdcache_gen, 1580cd045cb4SSage Weil ci->i_rdcache_revoking); 15819563f88cSYan, Zheng if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) 15829563f88cSYan, Zheng check = 1; 1583355da1ebSSage Weil } 1584be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1585b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 15869563f88cSYan, Zheng out: 1587355da1ebSSage Weil if (check) 1588355da1ebSSage Weil ceph_check_caps(ci, 0, NULL); 1589355da1ebSSage Weil iput(inode); 1590355da1ebSSage Weil } 1591355da1ebSSage Weil 1592355da1ebSSage Weil 1593355da1ebSSage Weil /* 15943f99969fSYan, Zheng * called by trunc_wq; 1595355da1ebSSage Weil * 1596355da1ebSSage Weil * We also truncate in a separate thread as well. 1597355da1ebSSage Weil */ 15983c6f6b79SSage Weil static void ceph_vmtruncate_work(struct work_struct *work) 1599355da1ebSSage Weil { 1600355da1ebSSage Weil struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, 1601355da1ebSSage Weil i_vmtruncate_work); 1602355da1ebSSage Weil struct inode *inode = &ci->vfs_inode; 1603355da1ebSSage Weil 1604355da1ebSSage Weil dout("vmtruncate_work %p\n", inode); 1605b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 1606355da1ebSSage Weil iput(inode); 1607355da1ebSSage Weil } 1608355da1ebSSage Weil 1609355da1ebSSage Weil /* 16103c6f6b79SSage Weil * Queue an async vmtruncate. If we fail to queue work, we will handle 16113c6f6b79SSage Weil * the truncation the next time we call __ceph_do_pending_vmtruncate. 16123c6f6b79SSage Weil */ 16133c6f6b79SSage Weil void ceph_queue_vmtruncate(struct inode *inode) 16143c6f6b79SSage Weil { 16153c6f6b79SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 16163c6f6b79SSage Weil 161715a2015fSSage Weil ihold(inode); 161899ccbd22SMilosz Tanski 1619640ef79dSCheng Renquan if (queue_work(ceph_sb_to_client(inode->i_sb)->trunc_wq, 16203c6f6b79SSage Weil &ci->i_vmtruncate_work)) { 16213c6f6b79SSage Weil dout("ceph_queue_vmtruncate %p\n", inode); 16223c6f6b79SSage Weil } else { 16233c6f6b79SSage Weil dout("ceph_queue_vmtruncate %p failed, pending=%d\n", 16243c6f6b79SSage Weil inode, ci->i_truncate_pending); 162515a2015fSSage Weil iput(inode); 16263c6f6b79SSage Weil } 16273c6f6b79SSage Weil } 16283c6f6b79SSage Weil 16293c6f6b79SSage Weil /* 1630355da1ebSSage Weil * Make sure any pending truncation is applied before doing anything 1631355da1ebSSage Weil * that may depend on it. 1632355da1ebSSage Weil */ 1633b415bf4fSYan, Zheng void __ceph_do_pending_vmtruncate(struct inode *inode) 1634355da1ebSSage Weil { 1635355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1636355da1ebSSage Weil u64 to; 1637a85f50b6SYan, Zheng int wrbuffer_refs, finish = 0; 1638355da1ebSSage Weil 1639b0d7c223SYan, Zheng mutex_lock(&ci->i_truncate_mutex); 1640355da1ebSSage Weil retry: 1641be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1642355da1ebSSage Weil if (ci->i_truncate_pending == 0) { 1643355da1ebSSage Weil dout("__do_pending_vmtruncate %p none pending\n", inode); 1644be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1645b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1646355da1ebSSage Weil return; 1647355da1ebSSage Weil } 1648355da1ebSSage Weil 1649355da1ebSSage Weil /* 1650355da1ebSSage Weil * make sure any dirty snapped pages are flushed before we 1651355da1ebSSage Weil * possibly truncate them.. so write AND block! 1652355da1ebSSage Weil */ 1653355da1ebSSage Weil if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { 1654355da1ebSSage Weil dout("__do_pending_vmtruncate %p flushing snaps first\n", 1655355da1ebSSage Weil inode); 1656be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1657355da1ebSSage Weil filemap_write_and_wait_range(&inode->i_data, 0, 1658355da1ebSSage Weil inode->i_sb->s_maxbytes); 1659355da1ebSSage Weil goto retry; 1660355da1ebSSage Weil } 1661355da1ebSSage Weil 1662b0d7c223SYan, Zheng /* there should be no reader or writer */ 1663b0d7c223SYan, Zheng WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); 1664b0d7c223SYan, Zheng 1665355da1ebSSage Weil to = ci->i_truncate_size; 1666355da1ebSSage Weil wrbuffer_refs = ci->i_wrbuffer_ref; 1667355da1ebSSage Weil dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, 1668355da1ebSSage Weil ci->i_truncate_pending, to); 1669be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1670355da1ebSSage Weil 16714e217b5dSYan, Zheng truncate_pagecache(inode, to); 1672355da1ebSSage Weil 1673be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1674a85f50b6SYan, Zheng if (to == ci->i_truncate_size) { 1675a85f50b6SYan, Zheng ci->i_truncate_pending = 0; 1676a85f50b6SYan, Zheng finish = 1; 1677a85f50b6SYan, Zheng } 1678be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1679a85f50b6SYan, Zheng if (!finish) 1680a85f50b6SYan, Zheng goto retry; 1681355da1ebSSage Weil 1682b0d7c223SYan, Zheng mutex_unlock(&ci->i_truncate_mutex); 1683b0d7c223SYan, Zheng 1684355da1ebSSage Weil if (wrbuffer_refs == 0) 1685355da1ebSSage Weil ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL); 1686a85f50b6SYan, Zheng 168703066f23SYehuda Sadeh wake_up_all(&ci->i_cap_wq); 1688355da1ebSSage Weil } 1689355da1ebSSage Weil 1690355da1ebSSage Weil /* 1691355da1ebSSage Weil * symlinks 1692355da1ebSSage Weil */ 1693355da1ebSSage Weil static void *ceph_sym_follow_link(struct dentry *dentry, struct nameidata *nd) 1694355da1ebSSage Weil { 1695355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(dentry->d_inode); 1696355da1ebSSage Weil nd_set_link(nd, ci->i_symlink); 1697355da1ebSSage Weil return NULL; 1698355da1ebSSage Weil } 1699355da1ebSSage Weil 1700355da1ebSSage Weil static const struct inode_operations ceph_symlink_iops = { 1701355da1ebSSage Weil .readlink = generic_readlink, 1702355da1ebSSage Weil .follow_link = ceph_sym_follow_link, 17030b932672SYan, Zheng .setattr = ceph_setattr, 17040b932672SYan, Zheng .getattr = ceph_getattr, 17050b932672SYan, Zheng .setxattr = ceph_setxattr, 17060b932672SYan, Zheng .getxattr = ceph_getxattr, 17070b932672SYan, Zheng .listxattr = ceph_listxattr, 17080b932672SYan, Zheng .removexattr = ceph_removexattr, 1709355da1ebSSage Weil }; 1710355da1ebSSage Weil 1711355da1ebSSage Weil /* 1712355da1ebSSage Weil * setattr 1713355da1ebSSage Weil */ 1714355da1ebSSage Weil int ceph_setattr(struct dentry *dentry, struct iattr *attr) 1715355da1ebSSage Weil { 1716355da1ebSSage Weil struct inode *inode = dentry->d_inode; 1717355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1718355da1ebSSage Weil const unsigned int ia_valid = attr->ia_valid; 1719355da1ebSSage Weil struct ceph_mds_request *req; 17203d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = ceph_sb_to_client(dentry->d_sb)->mdsc; 1721355da1ebSSage Weil int issued; 1722355da1ebSSage Weil int release = 0, dirtied = 0; 1723355da1ebSSage Weil int mask = 0; 1724355da1ebSSage Weil int err = 0; 1725fca65b4aSSage Weil int inode_dirty_flags = 0; 1726355da1ebSSage Weil 1727355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 1728355da1ebSSage Weil return -EROFS; 1729355da1ebSSage Weil 1730355da1ebSSage Weil err = inode_change_ok(inode, attr); 1731355da1ebSSage Weil if (err != 0) 1732355da1ebSSage Weil return err; 1733355da1ebSSage Weil 1734355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, 1735355da1ebSSage Weil USE_AUTH_MDS); 1736355da1ebSSage Weil if (IS_ERR(req)) 1737355da1ebSSage Weil return PTR_ERR(req); 1738355da1ebSSage Weil 1739be655596SSage Weil spin_lock(&ci->i_ceph_lock); 1740355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 1741355da1ebSSage Weil dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); 1742355da1ebSSage Weil 1743355da1ebSSage Weil if (ia_valid & ATTR_UID) { 1744355da1ebSSage Weil dout("setattr %p uid %d -> %d\n", inode, 1745bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, inode->i_uid), 1746bd2bae6aSEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 1747355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1748355da1ebSSage Weil inode->i_uid = attr->ia_uid; 1749355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1750355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1751ab871b90SEric W. Biederman !uid_eq(attr->ia_uid, inode->i_uid)) { 1752ab871b90SEric W. Biederman req->r_args.setattr.uid = cpu_to_le32( 1753ab871b90SEric W. Biederman from_kuid(&init_user_ns, attr->ia_uid)); 1754355da1ebSSage Weil mask |= CEPH_SETATTR_UID; 1755355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1756355da1ebSSage Weil } 1757355da1ebSSage Weil } 1758355da1ebSSage Weil if (ia_valid & ATTR_GID) { 1759355da1ebSSage Weil dout("setattr %p gid %d -> %d\n", inode, 1760bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, inode->i_gid), 1761bd2bae6aSEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 1762355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1763355da1ebSSage Weil inode->i_gid = attr->ia_gid; 1764355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1765355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1766ab871b90SEric W. Biederman !gid_eq(attr->ia_gid, inode->i_gid)) { 1767ab871b90SEric W. Biederman req->r_args.setattr.gid = cpu_to_le32( 1768ab871b90SEric W. Biederman from_kgid(&init_user_ns, attr->ia_gid)); 1769355da1ebSSage Weil mask |= CEPH_SETATTR_GID; 1770355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1771355da1ebSSage Weil } 1772355da1ebSSage Weil } 1773355da1ebSSage Weil if (ia_valid & ATTR_MODE) { 1774355da1ebSSage Weil dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, 1775355da1ebSSage Weil attr->ia_mode); 1776355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) { 1777355da1ebSSage Weil inode->i_mode = attr->ia_mode; 1778355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1779355da1ebSSage Weil } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || 1780355da1ebSSage Weil attr->ia_mode != inode->i_mode) { 17817221fe4cSGuangliang Zhao inode->i_mode = attr->ia_mode; 1782355da1ebSSage Weil req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); 1783355da1ebSSage Weil mask |= CEPH_SETATTR_MODE; 1784355da1ebSSage Weil release |= CEPH_CAP_AUTH_SHARED; 1785355da1ebSSage Weil } 1786355da1ebSSage Weil } 1787355da1ebSSage Weil 1788355da1ebSSage Weil if (ia_valid & ATTR_ATIME) { 1789355da1ebSSage Weil dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode, 1790355da1ebSSage Weil inode->i_atime.tv_sec, inode->i_atime.tv_nsec, 1791355da1ebSSage Weil attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); 1792355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 1793355da1ebSSage Weil ci->i_time_warp_seq++; 1794355da1ebSSage Weil inode->i_atime = attr->ia_atime; 1795355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1796355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 1797355da1ebSSage Weil timespec_compare(&inode->i_atime, 1798355da1ebSSage Weil &attr->ia_atime) < 0) { 1799355da1ebSSage Weil inode->i_atime = attr->ia_atime; 1800355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 1801355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1802355da1ebSSage Weil !timespec_equal(&inode->i_atime, &attr->ia_atime)) { 1803355da1ebSSage Weil ceph_encode_timespec(&req->r_args.setattr.atime, 1804355da1ebSSage Weil &attr->ia_atime); 1805355da1ebSSage Weil mask |= CEPH_SETATTR_ATIME; 1806355da1ebSSage Weil release |= CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD | 1807355da1ebSSage Weil CEPH_CAP_FILE_WR; 1808355da1ebSSage Weil } 1809355da1ebSSage Weil } 1810355da1ebSSage Weil if (ia_valid & ATTR_MTIME) { 1811355da1ebSSage Weil dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode, 1812355da1ebSSage Weil inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, 1813355da1ebSSage Weil attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); 1814355da1ebSSage Weil if (issued & CEPH_CAP_FILE_EXCL) { 1815355da1ebSSage Weil ci->i_time_warp_seq++; 1816355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 1817355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1818355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_WR) && 1819355da1ebSSage Weil timespec_compare(&inode->i_mtime, 1820355da1ebSSage Weil &attr->ia_mtime) < 0) { 1821355da1ebSSage Weil inode->i_mtime = attr->ia_mtime; 1822355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_WR; 1823355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1824355da1ebSSage Weil !timespec_equal(&inode->i_mtime, &attr->ia_mtime)) { 1825355da1ebSSage Weil ceph_encode_timespec(&req->r_args.setattr.mtime, 1826355da1ebSSage Weil &attr->ia_mtime); 1827355da1ebSSage Weil mask |= CEPH_SETATTR_MTIME; 1828355da1ebSSage Weil release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | 1829355da1ebSSage Weil CEPH_CAP_FILE_WR; 1830355da1ebSSage Weil } 1831355da1ebSSage Weil } 1832355da1ebSSage Weil if (ia_valid & ATTR_SIZE) { 1833355da1ebSSage Weil dout("setattr %p size %lld -> %lld\n", inode, 1834355da1ebSSage Weil inode->i_size, attr->ia_size); 1835355da1ebSSage Weil if ((issued & CEPH_CAP_FILE_EXCL) && 1836355da1ebSSage Weil attr->ia_size > inode->i_size) { 1837355da1ebSSage Weil inode->i_size = attr->ia_size; 1838355da1ebSSage Weil inode->i_blocks = 1839355da1ebSSage Weil (attr->ia_size + (1 << 9) - 1) >> 9; 1840355da1ebSSage Weil inode->i_ctime = attr->ia_ctime; 1841355da1ebSSage Weil ci->i_reported_size = attr->ia_size; 1842355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1843355da1ebSSage Weil } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || 1844355da1ebSSage Weil attr->ia_size != inode->i_size) { 1845355da1ebSSage Weil req->r_args.setattr.size = cpu_to_le64(attr->ia_size); 1846355da1ebSSage Weil req->r_args.setattr.old_size = 1847355da1ebSSage Weil cpu_to_le64(inode->i_size); 1848355da1ebSSage Weil mask |= CEPH_SETATTR_SIZE; 1849355da1ebSSage Weil release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | 1850355da1ebSSage Weil CEPH_CAP_FILE_WR; 1851355da1ebSSage Weil } 1852355da1ebSSage Weil } 1853355da1ebSSage Weil 1854355da1ebSSage Weil /* these do nothing */ 1855355da1ebSSage Weil if (ia_valid & ATTR_CTIME) { 1856355da1ebSSage Weil bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| 1857355da1ebSSage Weil ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; 1858355da1ebSSage Weil dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode, 1859355da1ebSSage Weil inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, 1860355da1ebSSage Weil attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, 1861355da1ebSSage Weil only ? "ctime only" : "ignored"); 1862355da1ebSSage Weil inode->i_ctime = attr->ia_ctime; 1863355da1ebSSage Weil if (only) { 1864355da1ebSSage Weil /* 1865355da1ebSSage Weil * if kernel wants to dirty ctime but nothing else, 1866355da1ebSSage Weil * we need to choose a cap to dirty under, or do 1867355da1ebSSage Weil * a almost-no-op setattr 1868355da1ebSSage Weil */ 1869355da1ebSSage Weil if (issued & CEPH_CAP_AUTH_EXCL) 1870355da1ebSSage Weil dirtied |= CEPH_CAP_AUTH_EXCL; 1871355da1ebSSage Weil else if (issued & CEPH_CAP_FILE_EXCL) 1872355da1ebSSage Weil dirtied |= CEPH_CAP_FILE_EXCL; 1873355da1ebSSage Weil else if (issued & CEPH_CAP_XATTR_EXCL) 1874355da1ebSSage Weil dirtied |= CEPH_CAP_XATTR_EXCL; 1875355da1ebSSage Weil else 1876355da1ebSSage Weil mask |= CEPH_SETATTR_CTIME; 1877355da1ebSSage Weil } 1878355da1ebSSage Weil } 1879355da1ebSSage Weil if (ia_valid & ATTR_FILE) 1880355da1ebSSage Weil dout("setattr %p ATTR_FILE ... hrm!\n", inode); 1881355da1ebSSage Weil 1882355da1ebSSage Weil if (dirtied) { 1883fca65b4aSSage Weil inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied); 1884355da1ebSSage Weil inode->i_ctime = CURRENT_TIME; 1885355da1ebSSage Weil } 1886355da1ebSSage Weil 1887355da1ebSSage Weil release &= issued; 1888be655596SSage Weil spin_unlock(&ci->i_ceph_lock); 1889355da1ebSSage Weil 1890fca65b4aSSage Weil if (inode_dirty_flags) 1891fca65b4aSSage Weil __mark_inode_dirty(inode, inode_dirty_flags); 1892fca65b4aSSage Weil 18937221fe4cSGuangliang Zhao if (ia_valid & ATTR_MODE) { 18944db658eaSLinus Torvalds err = posix_acl_chmod(inode, attr->ia_mode); 18957221fe4cSGuangliang Zhao if (err) 18967221fe4cSGuangliang Zhao goto out_put; 18977221fe4cSGuangliang Zhao } 18987221fe4cSGuangliang Zhao 1899355da1ebSSage Weil if (mask) { 190070b666c3SSage Weil req->r_inode = inode; 190170b666c3SSage Weil ihold(inode); 1902355da1ebSSage Weil req->r_inode_drop = release; 1903355da1ebSSage Weil req->r_args.setattr.mask = cpu_to_le32(mask); 1904355da1ebSSage Weil req->r_num_caps = 1; 1905752c8bdcSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 1906355da1ebSSage Weil } 1907355da1ebSSage Weil dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, 1908355da1ebSSage Weil ceph_cap_string(dirtied), mask); 1909355da1ebSSage Weil 1910355da1ebSSage Weil ceph_mdsc_put_request(req); 1911b0d7c223SYan, Zheng if (mask & CEPH_SETATTR_SIZE) 1912b415bf4fSYan, Zheng __ceph_do_pending_vmtruncate(inode); 1913355da1ebSSage Weil return err; 19147221fe4cSGuangliang Zhao out_put: 1915355da1ebSSage Weil ceph_mdsc_put_request(req); 1916355da1ebSSage Weil return err; 1917355da1ebSSage Weil } 1918355da1ebSSage Weil 1919355da1ebSSage Weil /* 1920355da1ebSSage Weil * Verify that we have a lease on the given mask. If not, 1921355da1ebSSage Weil * do a getattr against an mds. 1922355da1ebSSage Weil */ 192301deead0SYan, Zheng int __ceph_do_getattr(struct inode *inode, struct page *locked_page, 192401deead0SYan, Zheng int mask, bool force) 1925355da1ebSSage Weil { 19263d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 19273d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 1928355da1ebSSage Weil struct ceph_mds_request *req; 1929355da1ebSSage Weil int err; 1930355da1ebSSage Weil 1931355da1ebSSage Weil if (ceph_snap(inode) == CEPH_SNAPDIR) { 1932355da1ebSSage Weil dout("do_getattr inode %p SNAPDIR\n", inode); 1933355da1ebSSage Weil return 0; 1934355da1ebSSage Weil } 1935355da1ebSSage Weil 193601deead0SYan, Zheng dout("do_getattr inode %p mask %s mode 0%o\n", 193701deead0SYan, Zheng inode, ceph_cap_string(mask), inode->i_mode); 1938508b32d8SYan, Zheng if (!force && ceph_caps_issued_mask(ceph_inode(inode), mask, 1)) 1939355da1ebSSage Weil return 0; 1940355da1ebSSage Weil 1941355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS); 1942355da1ebSSage Weil if (IS_ERR(req)) 1943355da1ebSSage Weil return PTR_ERR(req); 194470b666c3SSage Weil req->r_inode = inode; 194570b666c3SSage Weil ihold(inode); 1946355da1ebSSage Weil req->r_num_caps = 1; 1947355da1ebSSage Weil req->r_args.getattr.mask = cpu_to_le32(mask); 194801deead0SYan, Zheng req->r_locked_page = locked_page; 1949355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, NULL, req); 195001deead0SYan, Zheng if (locked_page && err == 0) { 195101deead0SYan, Zheng u64 inline_version = req->r_reply_info.targeti.inline_version; 195201deead0SYan, Zheng if (inline_version == 0) { 195301deead0SYan, Zheng /* the reply is supposed to contain inline data */ 195401deead0SYan, Zheng err = -EINVAL; 195501deead0SYan, Zheng } else if (inline_version == CEPH_INLINE_NONE) { 195601deead0SYan, Zheng err = -ENODATA; 195701deead0SYan, Zheng } else { 195801deead0SYan, Zheng err = req->r_reply_info.targeti.inline_len; 195901deead0SYan, Zheng } 196001deead0SYan, Zheng } 1961355da1ebSSage Weil ceph_mdsc_put_request(req); 1962355da1ebSSage Weil dout("do_getattr result=%d\n", err); 1963355da1ebSSage Weil return err; 1964355da1ebSSage Weil } 1965355da1ebSSage Weil 1966355da1ebSSage Weil 1967355da1ebSSage Weil /* 1968355da1ebSSage Weil * Check inode permissions. We verify we have a valid value for 1969355da1ebSSage Weil * the AUTH cap, then call the generic handler. 1970355da1ebSSage Weil */ 197110556cb2SAl Viro int ceph_permission(struct inode *inode, int mask) 1972355da1ebSSage Weil { 1973b74c79e9SNick Piggin int err; 1974b74c79e9SNick Piggin 197510556cb2SAl Viro if (mask & MAY_NOT_BLOCK) 1976b74c79e9SNick Piggin return -ECHILD; 1977b74c79e9SNick Piggin 1978508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); 1979355da1ebSSage Weil 1980355da1ebSSage Weil if (!err) 19812830ba7fSAl Viro err = generic_permission(inode, mask); 1982355da1ebSSage Weil return err; 1983355da1ebSSage Weil } 1984355da1ebSSage Weil 1985355da1ebSSage Weil /* 1986355da1ebSSage Weil * Get all attributes. Hopefully somedata we'll have a statlite() 1987355da1ebSSage Weil * and can limit the fields we require to be accurate. 1988355da1ebSSage Weil */ 1989355da1ebSSage Weil int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, 1990355da1ebSSage Weil struct kstat *stat) 1991355da1ebSSage Weil { 1992355da1ebSSage Weil struct inode *inode = dentry->d_inode; 1993232d4b01SSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 1994355da1ebSSage Weil int err; 1995355da1ebSSage Weil 1996508b32d8SYan, Zheng err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL, false); 1997355da1ebSSage Weil if (!err) { 1998355da1ebSSage Weil generic_fillattr(inode, stat); 1999ad1fee96SYehuda Sadeh stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino); 2000355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 2001355da1ebSSage Weil stat->dev = ceph_snap(inode); 2002355da1ebSSage Weil else 2003355da1ebSSage Weil stat->dev = 0; 2004232d4b01SSage Weil if (S_ISDIR(inode->i_mode)) { 20051c1266bbSYehuda Sadeh if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), 20061c1266bbSYehuda Sadeh RBYTES)) 2007232d4b01SSage Weil stat->size = ci->i_rbytes; 20081c1266bbSYehuda Sadeh else 20091c1266bbSYehuda Sadeh stat->size = ci->i_files + ci->i_subdirs; 2010232d4b01SSage Weil stat->blocks = 0; 2011355da1ebSSage Weil stat->blksize = 65536; 2012355da1ebSSage Weil } 2013232d4b01SSage Weil } 2014355da1ebSSage Weil return err; 2015355da1ebSSage Weil } 2016