On Thu, Jan 04, 2024 at 02:27:45PM -0800, Sarthak Kukreti 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@xxxxxxxxxxxxxxx
> Reported-by: "Darrick J. Wong" <djwong@xxxxxxxxxx>
> Signed-off-by: Sarthak Kukreti <sarthakkukreti@xxxxxxxxxxxx>
> Reviewed-by: Christoph Hellwig <hch@xxxxxx>
> Reviewed-by: "Darrick J. Wong" <djwong@xxxxxxxxxx>
> Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
> Link: https://lore.kernel.org/r/20231011201230.750105-1-sarthakkukreti@xxxxxxxxxxxx
> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
> (cherry picked from commit 1364a3c391aedfeb32aa025303ead3d7c91cdf9d)
> Signed-off-by: Sarthak Kukreti <sarthakkukreti@xxxxxxxxxxxx>
> ---
> fs/block_dev.c | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
All now queued up, thanks for the backports.
greg k-h
