diff mbox series

[v6,4/7] tmpfs: add support for multigrain timestamps

Message ID 20230725-mgctime-v6-4-a794c2b7abca@kernel.org
State New
Headers show
Series fs: implement multigrain timestamps | expand

Commit Message

Jeff Layton July 25, 2023, 2:58 p.m. UTC 
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.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 mm/shmem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Jan Kara Aug. 2, 2023, 7:37 p.m. UTC | #1 
On Tue 25-07-23 10:58:17, Jeff Layton wrote:
> 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.
> 
> Signed-off-by: Jeff Layton <jlayton@kernel.org>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  mm/shmem.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/shmem.c b/mm/shmem.c
> index 654d9a585820..b6019c905058 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -4264,7 +4264,7 @@ 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
> 
> -- 
> 2.41.0
>
diff mbox series

Patch

diff --git a/mm/shmem.c b/mm/shmem.c
index 654d9a585820..b6019c905058 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -4264,7 +4264,7 @@  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