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| author | Uros Bizjak <ubizjak@gmail.com> | 2024-10-07 11:52:37 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-10-22 12:16:57 +0300 |
| commit | 0cb9c994e71c15555cf8c3d12fda10fa8f5dcdea (patch) | |
| tree | db68948faf59f9da59aa0848c60722312ff82af3 | |
| parent | 1e756248be2aa03188a9700da5feb3d3f3c91eed (diff) | |
| download | linux-0cb9c994e71c15555cf8c3d12fda10fa8f5dcdea.tar.xz | |
namespace: Use atomic64_inc_return() in alloc_mnt_ns()
Use atomic64_inc_return(&ref) instead of atomic64_add_return(1, &ref)
to use optimized implementation and ease register pressure around
the primitive for targets that implement optimized variant.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Link: https://lore.kernel.org/r/20241007085303.48312-1-ubizjak@gmail.com
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | fs/namespace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 93c377816d75..9a3c251d033d 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -3901,7 +3901,7 @@ static struct mnt_namespace *alloc_mnt_ns(struct user_namespace *user_ns, bool a } new_ns->ns.ops = &mntns_operations; if (!anon) - new_ns->seq = atomic64_add_return(1, &mnt_ns_seq); + new_ns->seq = atomic64_inc_return(&mnt_ns_seq); refcount_set(&new_ns->ns.count, 1); refcount_set(&new_ns->passive, 1); new_ns->mounts = RB_ROOT; |