diff options
Diffstat (limited to 'fs/nfs/dir.c')
-rw-r--r-- | fs/nfs/dir.c | 96 |
1 files changed, 48 insertions, 48 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 5f1af4cd1a33..fad81041f5ab 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -455,14 +455,17 @@ bool nfs_use_readdirplus(struct inode *dir, struct dir_context *ctx) } /* - * This function is called by the lookup code to request the use of - * readdirplus to accelerate any future lookups in the same + * This function is called by the lookup and getattr code to request the + * use of readdirplus to accelerate any future lookups in the same * directory. */ -static void nfs_advise_use_readdirplus(struct inode *dir) { - set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(dir)->flags); + struct nfs_inode *nfsi = NFS_I(dir); + + if (nfs_server_capable(dir, NFS_CAP_READDIRPLUS) && + !list_empty(&nfsi->open_files)) + set_bit(NFS_INO_ADVISE_RDPLUS, &nfsi->flags); } /* @@ -475,9 +478,12 @@ void nfs_advise_use_readdirplus(struct inode *dir) */ void nfs_force_use_readdirplus(struct inode *dir) { - if (!list_empty(&NFS_I(dir)->open_files)) { - nfs_advise_use_readdirplus(dir); - nfs_zap_mapping(dir, dir->i_mapping); + struct nfs_inode *nfsi = NFS_I(dir); + + if (nfs_server_capable(dir, NFS_CAP_READDIRPLUS) && + !list_empty(&nfsi->open_files)) { + set_bit(NFS_INO_ADVISE_RDPLUS, &nfsi->flags); + invalidate_mapping_pages(dir->i_mapping, 0, -1); } } @@ -886,17 +892,6 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc) goto out; } -static bool nfs_dir_mapping_need_revalidate(struct inode *dir) -{ - struct nfs_inode *nfsi = NFS_I(dir); - - if (nfs_attribute_cache_expired(dir)) - return true; - if (nfsi->cache_validity & NFS_INO_INVALID_DATA) - return true; - return false; -} - /* The file offset position represents the dirent entry number. A last cookie cache takes care of the common case of reading the whole directory. @@ -928,7 +923,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx) desc->decode = NFS_PROTO(inode)->decode_dirent; desc->plus = nfs_use_readdirplus(inode, ctx) ? 1 : 0; - if (ctx->pos == 0 || nfs_dir_mapping_need_revalidate(inode)) + if (ctx->pos == 0 || nfs_attribute_cache_expired(inode)) res = nfs_revalidate_mapping(inode, file->f_mapping); if (res < 0) goto out; @@ -1035,8 +1030,6 @@ EXPORT_SYMBOL_GPL(nfs_force_lookup_revalidate); static int nfs_check_verifier(struct inode *dir, struct dentry *dentry, int rcu_walk) { - int ret; - if (IS_ROOT(dentry)) return 1; if (NFS_SERVER(dir)->flags & NFS_MOUNT_LOOKUP_CACHE_NONE) @@ -1044,12 +1037,12 @@ static int nfs_check_verifier(struct inode *dir, struct dentry *dentry, if (!nfs_verify_change_attribute(dir, dentry->d_time)) return 0; /* Revalidate nfsi->cache_change_attribute before we declare a match */ - if (rcu_walk) - ret = nfs_revalidate_inode_rcu(NFS_SERVER(dir), dir); - else - ret = nfs_revalidate_inode(NFS_SERVER(dir), dir); - if (ret < 0) - return 0; + if (nfs_mapping_need_revalidate_inode(dir)) { + if (rcu_walk) + return 0; + if (__nfs_revalidate_inode(NFS_SERVER(dir), dir) < 0) + return 0; + } if (!nfs_verify_change_attribute(dir, dentry->d_time)) return 0; return 1; @@ -1161,7 +1154,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags) return -ECHILD; goto out_bad; } - goto out_valid_noent; + goto out_valid; } if (is_bad_inode(inode)) { @@ -1184,6 +1177,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags) return -ECHILD; goto out_zap_parent; } + nfs_advise_use_readdirplus(dir); goto out_valid; } @@ -1219,12 +1213,12 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags) nfs_free_fhandle(fhandle); nfs4_label_free(label); + /* set a readdirplus hint that we had a cache miss */ + nfs_force_use_readdirplus(dir); + out_set_verifier: nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); out_valid: - /* Success: notify readdir to use READDIRPLUS */ - nfs_advise_use_readdirplus(dir); - out_valid_noent: if (flags & LOOKUP_RCU) { if (parent != ACCESS_ONCE(dentry->d_parent)) return -ECHILD; @@ -1279,8 +1273,8 @@ out_error: */ static int nfs_weak_revalidate(struct dentry *dentry, unsigned int flags) { - int error; struct inode *inode = d_inode(dentry); + int error = 0; /* * I believe we can only get a negative dentry here in the case of a @@ -1299,7 +1293,8 @@ static int nfs_weak_revalidate(struct dentry *dentry, unsigned int flags) return 0; } - error = nfs_revalidate_inode(NFS_SERVER(inode), inode); + if (nfs_mapping_need_revalidate_inode(inode)) + error = __nfs_revalidate_inode(NFS_SERVER(inode), inode); dfprintk(LOOKUPCACHE, "NFS: %s: inode %lu is %s\n", __func__, inode->i_ino, error ? "invalid" : "valid"); return !error; @@ -1424,8 +1419,8 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in if (IS_ERR(res)) goto out_label; - /* Success: notify readdir to use READDIRPLUS */ - nfs_advise_use_readdirplus(dir); + /* Notify readdir to use READDIRPLUS */ + nfs_force_use_readdirplus(dir); no_entry: res = d_splice_alias(inode, dentry); @@ -1467,9 +1462,9 @@ static fmode_t flags_to_mode(int flags) return res; } -static struct nfs_open_context *create_nfs_open_context(struct dentry *dentry, int open_flags) +static struct nfs_open_context *create_nfs_open_context(struct dentry *dentry, int open_flags, struct file *filp) { - return alloc_nfs_open_context(dentry, flags_to_mode(open_flags)); + return alloc_nfs_open_context(dentry, flags_to_mode(open_flags), filp); } static int do_open(struct inode *inode, struct file *filp) @@ -1535,8 +1530,13 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry, return -ENAMETOOLONG; if (open_flags & O_CREAT) { + struct nfs_server *server = NFS_SERVER(dir); + + if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK)) + mode &= ~current_umask(); + attr.ia_valid |= ATTR_MODE; - attr.ia_mode = mode & ~current_umask(); + attr.ia_mode = mode; } if (open_flags & O_TRUNC) { attr.ia_valid |= ATTR_SIZE; @@ -1554,7 +1554,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry, return finish_no_open(file, dentry); } - ctx = create_nfs_open_context(dentry, open_flags); + ctx = create_nfs_open_context(dentry, open_flags, file); err = PTR_ERR(ctx); if (IS_ERR(ctx)) goto out; @@ -2286,8 +2286,7 @@ static int nfs_access_get_cached(struct inode *inode, struct rpc_cred *cred, str if (cache == NULL) goto out; /* Found an entry, is our attribute cache valid? */ - if (!nfs_attribute_cache_expired(inode) && - !(nfsi->cache_validity & NFS_INO_INVALID_ATTR)) + if (!nfs_check_cache_invalid(inode, NFS_INO_INVALID_ACCESS)) break; err = -ECHILD; if (!may_block) @@ -2335,12 +2334,12 @@ static int nfs_access_get_cached_rcu(struct inode *inode, struct rpc_cred *cred, cache = NULL; if (cache == NULL) goto out; - err = nfs_revalidate_inode_rcu(NFS_SERVER(inode), inode); - if (err) + if (nfs_check_cache_invalid(inode, NFS_INO_INVALID_ACCESS)) goto out; res->jiffies = cache->jiffies; res->cred = cache->cred; res->mask = cache->mask; + err = 0; out: rcu_read_unlock(); return err; @@ -2492,12 +2491,13 @@ EXPORT_SYMBOL_GPL(nfs_may_open); static int nfs_execute_ok(struct inode *inode, int mask) { struct nfs_server *server = NFS_SERVER(inode); - int ret; + int ret = 0; - if (mask & MAY_NOT_BLOCK) - ret = nfs_revalidate_inode_rcu(server, inode); - else - ret = nfs_revalidate_inode(server, inode); + if (nfs_check_cache_invalid(inode, NFS_INO_INVALID_ACCESS)) { + if (mask & MAY_NOT_BLOCK) + return -ECHILD; + ret = __nfs_revalidate_inode(server, inode); + } if (ret == 0 && !execute_ok(inode)) ret = -EACCES; return ret; |