[Devel] [PATCH RH7 10/14] mount: make {lock, unlock}_mount_hash() static

[Pavel Tikhomirov]

From: Christian Brauner <christian.brauner at ubuntu.com>

The lock_mount_hash() and unlock_mount_hash() helpers are never called
outside a single file. Remove them from the header and make them static
to reflect this fact. There's no need to have them callable from other
places right now, as Christoph observed.

Link: https://lore.kernel.org/r/20210121131959.646623-31-christian.brauner@ubuntu.com
Cc: David Howells <dhowells at redhat.com>
Cc: Al Viro <viro at zeniv.linux.org.uk>
Cc: linux-fsdevel at vger.kernel.org
Suggested-by: Christoph Hellwig <hch at lst.de>
Reviewed-by: Christoph Hellwig <hch at lst.de>
Signed-off-by: Christian Brauner <christian.brauner at ubuntu.com>

(cherry picked from commit d033cb6784c4f3a19a593cfe11f850e476197388)
https://jira.sw.ru/browse/PSBM-144416
Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
---
 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 b07b3934b746..f968bb548685 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -132,16 +132,6 @@ 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 seq_file m;
 	struct mnt_namespace *ns;
diff --git a/fs/namespace.c b/fs/namespace.c
index 52a879628aba..9e58a2ff16ea 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -84,6 +84,16 @@ 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);
-- 
2.39.2