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Message-Id: <20240913-mgtime-v7-9-92d4020e3b00@kernel.org> Date: Fri, 13 Sep 2024 09:54:18 -0400 From: Jeff Layton <jlayton@...nel.org> To: John Stultz <jstultz@...gle.com>, Thomas Gleixner <tglx@...utronix.de>, Stephen Boyd <sboyd@...nel.org>, Alexander Viro <viro@...iv.linux.org.uk>, Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, Steven Rostedt <rostedt@...dmis.org>, Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Jonathan Corbet <corbet@....net>, Chandan Babu R <chandan.babu@...cle.com>, "Darrick J. Wong" <djwong@...nel.org>, Theodore Ts'o <tytso@....edu>, Andreas Dilger <adilger.kernel@...ger.ca>, Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>, David Sterba <dsterba@...e.com>, Hugh Dickins <hughd@...gle.com>, Andrew Morton <akpm@...ux-foundation.org>, Chuck Lever <chuck.lever@...cle.com>, Vadim Fedorenko <vadim.fedorenko@...ux.dev> Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-trace-kernel@...r.kernel.org, linux-doc@...r.kernel.org, linux-xfs@...r.kernel.org, linux-ext4@...r.kernel.org, linux-btrfs@...r.kernel.org, linux-nfs@...r.kernel.org, linux-mm@...ck.org, Jeff Layton <jlayton@...nel.org> Subject: [PATCH v7 09/11] ext4: switch to 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. For ext4, we only need to enable the FS_MGTIME flag. Reviewed-by: Josef Bacik <josef@...icpanda.com> Reviewed-by: Jan Kara <jack@...e.cz> Signed-off-by: Jeff Layton <jlayton@...nel.org> --- fs/ext4/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index e72145c4ae5a..a125d9435b8a 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -7298,7 +7298,7 @@ static struct file_system_type ext4_fs_type = { .init_fs_context = ext4_init_fs_context, .parameters = ext4_param_specs, .kill_sb = ext4_kill_sb, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_MGTIME, }; MODULE_ALIAS_FS("ext4"); -- 2.46.0
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