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authorAl Viro <viro@zeniv.linux.org.uk>2011-11-24 18:22:03 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-01-03 22:56:58 -0500
commitc71053659e3bb27d44b79da0bb4abf5838c2060a (patch)
tree59e86cc1602db35ffc2c3991953161f1619706b1 /fs/namespace.c
parent7d6fec45a5131918b51dcd76da52f2ec86a85be6 (diff)
vfs: spread struct mount - __lookup_mnt() result
switch __lookup_mnt() to returning struct mount *; callers adjusted. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namespace.c')
-rw-r--r--fs/namespace.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index dda47fee6fd..398eb242149 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -464,20 +464,20 @@ static void free_vfsmnt(struct vfsmount *mnt)
* @dir. If @dir is set return the first mount else return the last mount.
* vfsmount_lock must be held for read or write.
*/
-struct vfsmount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry,
+struct mount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry,
int dir)
{
struct list_head *head = mount_hashtable + hash(mnt, dentry);
struct list_head *tmp = head;
- struct vfsmount *p, *found = NULL;
+ struct mount *p, *found = NULL;
for (;;) {
tmp = dir ? tmp->next : tmp->prev;
p = NULL;
if (tmp == head)
break;
- p = list_entry(tmp, struct vfsmount, mnt_hash);
- if (p->mnt_parent == mnt && p->mnt_mountpoint == dentry) {
+ p = list_entry(tmp, struct mount, mnt.mnt_hash);
+ if (p->mnt.mnt_parent == mnt && p->mnt.mnt_mountpoint == dentry) {
found = p;
break;
}
@@ -491,13 +491,18 @@ struct vfsmount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry,
*/
struct vfsmount *lookup_mnt(struct path *path)
{
- struct vfsmount *child_mnt;
+ struct mount *child_mnt;
br_read_lock(vfsmount_lock);
- if ((child_mnt = __lookup_mnt(path->mnt, path->dentry, 1)))
- mntget(child_mnt);
- br_read_unlock(vfsmount_lock);
- return child_mnt;
+ child_mnt = __lookup_mnt(path->mnt, path->dentry, 1);
+ if (child_mnt) {
+ mnt_add_count(child_mnt, 1);
+ br_read_unlock(vfsmount_lock);
+ return &child_mnt->mnt;
+ } else {
+ br_read_unlock(vfsmount_lock);
+ return NULL;
+ }
}
static inline int check_mnt(struct vfsmount *mnt)