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authorTrond Myklebust <Trond.Myklebust@netapp.com>2009-06-22 15:09:13 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-22 21:28:25 -0700
commit616511d039af402670de8500d0e24495113a9cab (patch)
tree825a34ab670dedc463ba7252a177793746c010c7 /fs/namespace.c
parent31950eb66ff47c946fd9c65c2f8c94b6b7ba13fc (diff)
VFS: Uninline the function put_mnt_ns()
In order to allow modules to use it without having to export vfsmount_lock. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/namespace.c')
-rw-r--r--fs/namespace.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 2dd333b0fe7f..6645846f2056 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2246,10 +2246,14 @@ void __init mnt_init(void)
init_mount_tree();
}
-void __put_mnt_ns(struct mnt_namespace *ns)
+void put_mnt_ns(struct mnt_namespace *ns)
{
- struct vfsmount *root = ns->root;
+ struct vfsmount *root;
LIST_HEAD(umount_list);
+
+ if (!atomic_dec_and_lock(&ns->count, &vfsmount_lock))
+ return;
+ root = ns->root;
ns->root = NULL;
spin_unlock(&vfsmount_lock);
down_write(&namespace_sem);