tree c4afc928ce00778cb884a6625795a949a246d904
parent 7e81f99afd91c937f0e66dc135e26c1c4f78b003
author Martijn Coenen <maco@android.com> 1583845614 +0100
committer Jens Axboe <axboe@kernel.dk> 1583871043 -0600

loop: Only freeze block queue when needed.

__loop_update_dio() can be called as a part of loop_set_fd(), when the
block queue is not yet up and running; avoid freezing the block queue in
that case, since that is an expensive operation.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martijn Coenen <maco@android.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>