tree b6c92d9d66ba6b6778b1860b431354892cd0f95b
parent 238501027abf0386fa5f5dcaf589f406eb187bc3
author Michael Lyle <mlyle@lyle.org> 1507937735 -0700
committer Jens Axboe <axboe@kernel.dk> 1508166446 -0600

bcache: don't write back data if reading it failed

If an IO operation fails, and we didn't successfully read data from the
cache, don't writeback invalid/partial data to the backing disk.

Signed-off-by: Michael Lyle <mlyle@lyle.org>
Reviewed-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>