[Devel] [PATCH RHEL7 COMMIT] ms/mount: make {lock, unlock}_mount_hash() static

[Konstantin Khorenko]

The commit is pushed to "branch-rh7-3.10.0-1160.88.1.vz7.195.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-1160.88.1.vz7.195.2
------>
commit f136594530268c4232d4c0c30f8733e0927b9407
Author: Christian Brauner <christian.brauner at ubuntu.com>
Date:   Thu Apr 13 18:47:20 2023 +0800

    ms/mount: make {lock,unlock}_mount_hash() static
    
    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>
    
    =================
    Patchset description:
    mount: Port move_mount_set_group and mount_setattr
    
    We need this as in Virtuozzo criu after rebase to mainstream criu in u20
    we will switch to this new API for sharing group setting accross mounts.
    
    https://jira.vzint.dev/browse/PSBM-144416
---
 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);