Re: [PATCH v6 1/5] block: Don't invalidate pagecache for invalid falloc modes

Mike Snitzer
2023-05-09T16:52:32Z

On Sat, May 06 2023 at 2:29P -0400,
Sarthak Kukreti <sarthakkukreti@chromium.org> wrote:

> Only call truncate_bdev_range() if the fallocate mode is
> supported. This fixes a bug where data in the pagecache
> could be invalidated if the fallocate() was called on the
> block device with an invalid mode.
>
> Fixes: 25f4c41415e5 ("block: implement (some of) fallocate for block devices")
> Cc: stable@vger.kernel.org
> Reported-by: Darrick J. Wong <djwong@kernel.org>
> Signed-off-by: Sarthak Kukreti <sarthakkukreti@chromium.org>

Reviewed-by: Mike Snitzer <snitzer@kernel.org>