[PATCH v2 02/39] mount: make {lock,unlock}_mount_hash() static

Christian Brauner
2020-11-16T02:15:27Z

The helpers are only called in fs/namespace.c functions so there's no need to
have them exposed in a header as Christoph pointed out.

Suggested-by: Christoph Hellwig <hch@lst.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
/* v2 */
- Christoph Hellwig:
- Add a patch to make {lock,unlock)_mount_hash() static.
---
fs/mount.h | 10 ----------
fs/namespace.c | 10 ++++++++++
2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/fs/mount.h b/fs/mount.h
index c7abb7b394d8..562d96d57bad 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -125,16 +125,6 @@ static inline void get_mnt_ns(struct mnt_namespace *ns)

extern seqlock_t mount_lock;

-static inline void lock_mount_hash(void)
-{
- write_seqlock(&mount_lock);
-}
-
-static inline void unlock_mount_hash(void)
-{
- write_sequnlock(&mount_lock);
-}
-
struct proc_mounts {
struct mnt_namespace *ns;
struct path root;
diff --git a/fs/namespace.c b/fs/namespace.c
index f183161833ad..798bbf4f48ad 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -87,6 +87,16 @@ EXPORT_SYMBOL_GPL(fs_kobj);
*/
__cacheline_aligned_in_smp DEFINE_SEQLOCK(mount_lock);

+static inline void lock_mount_hash(void)
+{
+ write_seqlock(&mount_lock);
+}
+
+static inline void unlock_mount_hash(void)
+{
+ write_sequnlock(&mount_lock);
+}
+
static inline struct hlist_head *m_hash(struct vfsmount *mnt, struct dentry *dentry)
{
unsigned long tmp = ((unsigned long)mnt / L1_CACHE_BYTES);