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Diffstat (limited to 'fs/dcache.c')
-rw-r--r--fs/dcache.c70
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);