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From: Jeff Layton <jlayton@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Christian Brauner <brauner@kernel.org>,
	John Stultz <jstultz@google.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Stephen Boyd <sboyd@kernel.org>,
	Chandan Babu R <chandan.babu@oracle.com>,
	"Darrick J. Wong" <djwong@kernel.org>,
	Dave Chinner <david@fromorbit.com>, Theodore Ts'o <tytso@mit.edu>,
	Andreas Dilger <adilger.kernel@dilger.ca>,
	Chris Mason <clm@fb.com>, Josef Bacik <josef@toxicpanda.com>,
	David Sterba <dsterba@suse.com>, Hugh Dickins <hughd@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Amir Goldstein <amir73il@gmail.com>, Jan Kara <jack@suse.de>,
	David Howells <dhowells@redhat.com>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org,
	linux-btrfs@vger.kernel.org, linux-mm@kvack.org,
	linux-nfs@vger.kernel.org, Jeff Layton <jlayton@kernel.org>
Subject: [PATCH RFC 9/9] tmpfs: add support for multigrain timestamps
Date: Wed, 18 Oct 2023 13:41:16 -0400	[thread overview]
Message-ID: <20231018-mgtime-v1-9-4a7a97b1f482@kernel.org> (raw)
In-Reply-To: <20231018-mgtime-v1-0-4a7a97b1f482@kernel.org>

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(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index c48239bfa646..6f5941bffa45 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -4586,7 +4586,7 @@ 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


      parent reply	other threads:[~2023-10-18 17:42 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-18 17:41 [PATCH RFC 0/9] fs: multigrain timestamps (redux) Jeff Layton
2023-10-18 17:41 ` [PATCH RFC 1/9] fs: switch timespec64 fields in inode to discrete integers Jeff Layton
2023-10-18 17:41 ` [PATCH RFC 2/9] timekeeping: new interfaces for multigrain timestamp handing Jeff Layton
2023-10-18 19:18   ` Linus Torvalds
2023-10-18 20:47     ` Jeff Layton
2023-10-18 21:31       ` Linus Torvalds
2023-10-18 21:52         ` Jeff Layton
2023-10-19  9:29           ` Christian Brauner
2023-10-19 11:28             ` Jeff Layton
2023-10-19 22:02               ` Dave Chinner
2023-10-20 12:12                 ` Jeff Layton
2023-10-20 20:06                   ` Linus Torvalds
2023-10-20 20:20                     ` Linus Torvalds
2023-10-20 21:05                     ` Jeff Layton
2023-10-22 22:17                   ` Dave Chinner
2023-10-23 14:45                     ` Jeff Layton
2023-10-23 23:26                       ` Dave Chinner
2023-10-24  0:18                         ` Linus Torvalds
2023-10-24  3:40                           ` Dave Chinner
2023-10-24  4:10                             ` Linus Torvalds
2023-10-24  7:08                             ` Amir Goldstein
2023-10-24 18:40                               ` Jeff Layton
2023-10-25  8:05                                 ` Dave Chinner
2023-10-25 10:41                                   ` Amir Goldstein
2023-10-25 12:25                                   ` Jeff Layton
2023-10-26  2:20                                     ` Dave Chinner
2023-10-26  5:42                                       ` Amir Goldstein
2023-10-27 10:35                                       ` Jeff Layton
2023-10-30 22:37                                         ` Dave Chinner
2023-10-30 23:11                                           ` Linus Torvalds
2023-10-31  1:42                                             ` Dave Chinner
2023-10-31  7:03                                               ` Amir Goldstein
2023-10-31 10:30                                                 ` Christian Brauner
2023-10-31 11:29                                                 ` Jeff Layton
2023-10-31 21:57                                                   ` Dave Chinner
2023-10-31 23:02                                                     ` Darrick J. Wong
2023-10-31 23:47                                                       ` Dave Chinner
2023-11-01 10:16                                                     ` Jan Kara
2023-11-01 11:38                                                       ` Amir Goldstein
2023-11-02 10:17                                                         ` Jeff Layton
2023-11-01 20:10                                                       ` Linus Torvalds
2023-11-01 21:34                                                         ` Trond Myklebust
2023-11-01 22:23                                                           ` Linus Torvalds
2023-11-01 22:45                                                             ` Trond Myklebust
2023-11-01 23:29                                                           ` Dave Chinner
2023-11-02 10:29                                                             ` Jeff Layton
2023-11-02 10:15                                                         ` Jeff Layton
2023-10-31 23:12                                                 ` Darrick J. Wong
2023-11-01  8:08                                                   ` Amir Goldstein
2023-10-31 11:26                                               ` Jeff Layton
2023-10-31 19:43                                                 ` John Stoffel
2023-10-31 11:04                                           ` Jeff Layton
2023-10-31 12:22                                             ` Jan Kara
2023-10-31 12:55                                               ` Jeff Layton
2023-10-30 23:34                                         ` ronnie sahlberg
2023-10-24 14:24                             ` Jeff Layton
2023-10-24 19:06                           ` Jeff Layton
2023-10-24 19:40                             ` Linus Torvalds
2023-10-24 20:19                               ` Jeff Layton
2023-10-31 10:26               ` Christian Brauner
2023-10-31 13:55                 ` Jeff Layton
2023-10-19 22:00   ` Thomas Gleixner
2023-10-19 22:41     ` Jeff Layton
2023-10-18 17:41 ` [PATCH RFC 3/9] timekeeping: add new debugfs file to count multigrain timestamps Jeff Layton
2023-10-18 17:41 ` [PATCH RFC 4/9] fs: add infrastructure for " Jeff Layton
2023-10-18 17:41 ` [PATCH RFC 5/9] fs: have setattr_copy handle multigrain timestamps appropriately Jeff Layton
2023-10-18 17:41 ` [PATCH RFC 6/9] xfs: switch to multigrain timestamps Jeff Layton
2023-10-18 17:41 ` [PATCH RFC 7/9] ext4: " Jeff Layton
2023-10-18 17:41 ` [PATCH RFC 8/9] btrfs: convert " Jeff Layton
2023-10-18 17:41 ` Jeff Layton [this message]

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