diff options
Diffstat (limited to 'fs/dcache.c')
| -rw-r--r-- | fs/dcache.c | 70 |
1 files changed, 46 insertions, 24 deletions
diff --git a/fs/dcache.c b/fs/dcache.c index 953173a293a9..f1358e5c3a59 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -257,6 +257,7 @@ kill_it: if (dentry) goto repeat; } +EXPORT_SYMBOL(dput); /** * d_invalidate - invalidate a dentry @@ -314,6 +315,7 @@ int d_invalidate(struct dentry * dentry) spin_unlock(&dcache_lock); return 0; } +EXPORT_SYMBOL(d_invalidate); /* This should be called _only_ with dcache_lock held */ @@ -328,6 +330,7 @@ struct dentry * dget_locked(struct dentry *dentry) { return __dget_locked(dentry); } +EXPORT_SYMBOL(dget_locked); /** * d_find_alias - grab a hashed alias of inode @@ -384,6 +387,7 @@ struct dentry * d_find_alias(struct inode *inode) } return de; } +EXPORT_SYMBOL(d_find_alias); /* * Try to kill dentries associated with this inode. @@ -408,6 +412,7 @@ restart: } spin_unlock(&dcache_lock); } +EXPORT_SYMBOL(d_prune_aliases); /* * Throw away a dentry - free the inode, dput the parent. This requires that @@ -610,6 +615,7 @@ void shrink_dcache_sb(struct super_block * sb) { __shrink_dcache_sb(sb, NULL, 0); } +EXPORT_SYMBOL(shrink_dcache_sb); /* * destroy a single subtree of dentries for unmount @@ -792,6 +798,7 @@ positive: spin_unlock(&dcache_lock); return 1; } +EXPORT_SYMBOL(have_submounts); /* * Search the dentry child list for the specified parent, @@ -876,6 +883,7 @@ void shrink_dcache_parent(struct dentry * parent) while ((found = select_parent(parent)) != 0) __shrink_dcache_sb(sb, &found, 0); } +EXPORT_SYMBOL(shrink_dcache_parent); /* * Scan `nr' dentries and return the number which remain. @@ -968,6 +976,7 @@ struct dentry *d_alloc(struct dentry * parent, const struct qstr *name) return dentry; } +EXPORT_SYMBOL(d_alloc); struct dentry *d_alloc_name(struct dentry *parent, const char *name) { @@ -1012,6 +1021,7 @@ void d_instantiate(struct dentry *entry, struct inode * inode) spin_unlock(&dcache_lock); security_d_instantiate(entry, inode); } +EXPORT_SYMBOL(d_instantiate); /** * d_instantiate_unique - instantiate a non-aliased dentry @@ -1108,6 +1118,7 @@ struct dentry * d_alloc_root(struct inode * root_inode) } return res; } +EXPORT_SYMBOL(d_alloc_root); static inline struct hlist_head *d_hash(struct dentry *parent, unsigned long hash) @@ -1211,7 +1222,6 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry) BUG_ON(!(new->d_flags & DCACHE_DISCONNECTED)); spin_unlock(&dcache_lock); security_d_instantiate(new, inode); - d_rehash(dentry); d_move(new, dentry); iput(inode); } else { @@ -1225,6 +1235,7 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry) d_add(dentry, inode); return new; } +EXPORT_SYMBOL(d_splice_alias); /** * d_add_ci - lookup or allocate new dentry with case-exact name @@ -1314,6 +1325,7 @@ err_out: iput(inode); return ERR_PTR(error); } +EXPORT_SYMBOL(d_add_ci); /** * d_lookup - search for a dentry @@ -1357,6 +1369,7 @@ struct dentry * d_lookup(struct dentry * parent, struct qstr * name) } while (read_seqretry(&rename_lock, seq)); return dentry; } +EXPORT_SYMBOL(d_lookup); struct dentry * __d_lookup(struct dentry * parent, struct qstr * name) { @@ -1483,6 +1496,7 @@ int d_validate(struct dentry *dentry, struct dentry *dparent) out: return 0; } +EXPORT_SYMBOL(d_validate); /* * When a file is deleted, we have two options: @@ -1528,6 +1542,7 @@ void d_delete(struct dentry * dentry) fsnotify_nameremove(dentry, isdir); } +EXPORT_SYMBOL(d_delete); static void __d_rehash(struct dentry * entry, struct hlist_head *list) { @@ -1556,6 +1571,7 @@ void d_rehash(struct dentry * entry) spin_unlock(&entry->d_lock); spin_unlock(&dcache_lock); } +EXPORT_SYMBOL(d_rehash); /* * When switching names, the actual string doesn't strictly have to @@ -1702,6 +1718,7 @@ void d_move(struct dentry * dentry, struct dentry * target) d_move_locked(dentry, target); spin_unlock(&dcache_lock); } +EXPORT_SYMBOL(d_move); /** * d_ancestor - search for an ancestor @@ -1868,6 +1885,7 @@ shouldnt_be_hashed: spin_unlock(&dcache_lock); BUG(); } +EXPORT_SYMBOL_GPL(d_materialise_unique); static int prepend(char **buffer, int *buflen, const char *str, int namelen) { @@ -2005,6 +2023,7 @@ char *d_path(const struct path *path, char *buf, int buflen) path_put(&root); return res; } +EXPORT_SYMBOL(d_path); /* * Helper function for dentry_operations.d_dname() members @@ -2171,6 +2190,30 @@ int is_subdir(struct dentry *new_dentry, struct dentry *old_dentry) return result; } +int path_is_under(struct path *path1, struct path *path2) +{ + struct vfsmount *mnt = path1->mnt; + struct dentry *dentry = path1->dentry; + int res; + spin_lock(&vfsmount_lock); + if (mnt != path2->mnt) { + for (;;) { + if (mnt->mnt_parent == mnt) { + spin_unlock(&vfsmount_lock); + return 0; + } + if (mnt->mnt_parent == path2->mnt) + break; + mnt = mnt->mnt_parent; + } + dentry = mnt->mnt_mountpoint; + } + res = is_subdir(dentry, path2->dentry); + spin_unlock(&vfsmount_lock); + return res; +} +EXPORT_SYMBOL(path_is_under); + void d_genocide(struct dentry *root) { struct dentry *this_parent = root; @@ -2228,6 +2271,7 @@ ino_t find_inode_number(struct dentry *dir, struct qstr *name) } return ino; } +EXPORT_SYMBOL(find_inode_number); static __initdata unsigned long dhash_entries; static int __init set_dhash_entries(char *str) @@ -2297,6 +2341,7 @@ static void __init dcache_init(void) /* SLAB cache for __getname() consumers */ struct kmem_cache *names_cachep __read_mostly; +EXPORT_SYMBOL(names_cachep); EXPORT_SYMBOL(d_genocide); @@ -2326,26 +2371,3 @@ void __init vfs_caches_init(unsigned long mempages) bdev_cache_init(); chrdev_init(); } - -EXPORT_SYMBOL(d_alloc); -EXPORT_SYMBOL(d_alloc_root); -EXPORT_SYMBOL(d_delete); -EXPORT_SYMBOL(d_find_alias); -EXPORT_SYMBOL(d_instantiate); -EXPORT_SYMBOL(d_invalidate); -EXPORT_SYMBOL(d_lookup); -EXPORT_SYMBOL(d_move); -EXPORT_SYMBOL_GPL(d_materialise_unique); -EXPORT_SYMBOL(d_path); -EXPORT_SYMBOL(d_prune_aliases); -EXPORT_SYMBOL(d_rehash); -EXPORT_SYMBOL(d_splice_alias); -EXPORT_SYMBOL(d_add_ci); -EXPORT_SYMBOL(d_validate); -EXPORT_SYMBOL(dget_locked); -EXPORT_SYMBOL(dput); -EXPORT_SYMBOL(find_inode_number); -EXPORT_SYMBOL(have_submounts); -EXPORT_SYMBOL(names_cachep); -EXPORT_SYMBOL(shrink_dcache_parent); -EXPORT_SYMBOL(shrink_dcache_sb); |