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@vger.kernel.org Reported-by: "Darrick J. Wong" djwong@kernel.org Signed-off-by: Sarthak Kukreti sarthakkukreti@chromium.org Reviewed-by: Christoph Hellwig hch@lst.de Reviewed-by: "Darrick J. Wong" djwong@kernel.org Signed-off-by: Mike Snitzer snitzer@kernel.org Link: https://lore.kernel.org/r/20231011201230.750105-1-sarthakkukreti@chromium.or... Signed-off-by: Jens Axboe axboe@kernel.dk (cherry picked from commit 1364a3c391aedfeb32aa025303ead3d7c91cdf9d) Signed-off-by: Sarthak Kukreti sarthakkukreti@chromium.org
fs/block_dev.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
All now queued up, thanks for the backports.
greg k-h