From: Kristian Klausen kristian@klausen.dk
commit 2b9ac22b12a266eb4fec246a07b504dd4983b16b upstream.
Without calling loop_config_discard() the discard flag and parameters aren't set/updated for the loop device and worst-case they could indicate discard support when it isn't the case (ex: if the LOOP_SET_STATUS ioctl was used with a different file prior to LOOP_CONFIGURE).
Cc: stable@vger.kernel.org # 5.8.x- Fixes: 3448914e8cc5 ("loop: Add LOOP_CONFIGURE ioctl") Signed-off-by: Kristian Klausen kristian@klausen.dk Link: https://lore.kernel.org/r/20210618115157.31452-1-kristian@klausen.dk Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/block/loop.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1154,6 +1154,7 @@ static int loop_configure(struct loop_de blk_queue_physical_block_size(lo->lo_queue, bsize); blk_queue_io_min(lo->lo_queue, bsize);
+ loop_config_discard(lo); loop_update_rotational(lo); loop_update_dio(lo); loop_sysfs_init(lo);