tmpfs: add support for multigrain timestamps

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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: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # documentation bits
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20241002-mgtime-v10-12-d1c4717f5284@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Jeff Layton 2024-10-02 17:27:27 -04:00 • committed by Christian Brauner

parent e2e801d6e6

commit 234d8895e3

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mm/shmem.c

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