From d48c3397291690c3576d6c983b0a86ecbc203cac Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 7 Aug 2023 15:38:41 -0400 Subject: [PATCH] tmpfs: add support for multigrain timestamps Enable multigrain timestamps, which should ensure that there is an apparent change to the timestamp whenever it has been written after being actively observed via getattr. tmpfs only requires the FS_MGTIME flag. Reviewed-by: Jan Kara Signed-off-by: Jeff Layton Message-Id: <20230807-mgctime-v7-10-d1dec143a704@kernel.org> Signed-off-by: Christian Brauner --- mm/shmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/shmem.c b/mm/shmem.c index 142ead7..98cc4be 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -4220,7 +4220,7 @@ static struct file_system_type shmem_fs_type = { #endif .kill_sb = kill_litter_super, #ifdef CONFIG_SHMEM - .fs_flags = FS_USERNS_MOUNT | FS_ALLOW_IDMAP, + .fs_flags = FS_USERNS_MOUNT | FS_ALLOW_IDMAP | FS_MGTIME, #else .fs_flags = FS_USERNS_MOUNT, #endif -- 2.7.4