fs: Provide helpers for manipulating sb->s_readonly_remount

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Provide helpers to set and clear sb->s_readonly_remount including
appropriate memory barriers. Also use this opportunity to document what
the barriers pair with and why they are needed.

Suggested-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Message-Id: <20230620112832.5158-1-jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Jan Kara 2023-06-20 13:28:32 +02:00 • committed by Christian Brauner

parent c541dce86c

commit d7439fb1f4

4 changed files with 64 additions and 21 deletions

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41

fs/internal.h

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25

fs/namespace.c

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17

fs/super.c

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2

include/linux/fs.h

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