Mikulas Patocka 293128b1ef dm writecache: have ssd writeback wait if the kcopyd workqueue is busy ...

Make dm-writecache wait if the kcopyd workqueue is busy (as will
happen if waiting for page allocation or inside submit_bio).

This change improves performance of "mkfs.ext2" by approximately 20%
on one testbed.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

2021-06-15 15:42:03 -04:00

21 KiB

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