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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-06-22 21:09:13 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-23 06:28:25 +0200 |
| commit | 616511d039af402670de8500d0e24495113a9cab (patch) | |
| tree | 825a34ab670dedc463ba7252a177793746c010c7 /fs | |
| parent | mm/init: cpu_hotplug_init() must be initialized before SLAB (diff) | |
| download | linux-616511d039af402670de8500d0e24495113a9cab.tar.xz linux-616511d039af402670de8500d0e24495113a9cab.zip | |
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')
| -rw-r--r-- | fs/namespace.c | 8 |
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); |