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(parent: 09d85f8) | patch
dm writecache: fix performance degradation in ssd mode
authorMikulas Patocka <mpatocka@redhat.com>
Sat, 23 Jan 2021 14:19:56 +0000 (09:19 -0500)
committerMike Snitzer <snitzer@redhat.com>
Wed, 3 Feb 2021 15:10:05 +0000 (10:10 -0500)
commitcb728484a7710c202f02b96aa0962ce9b07aa5c2
tree571ea5b9d22f486c26c06a3d2641d704e20bc9actree | snapshot
parent09d85f8d8909ec8baa07479ba5777bbca24961f3commit | diff
dm writecache: fix performance degradation in ssd mode

Fix a thinko in ssd_commit_superblock. region.count is in sectors, not
bytes. This bug doesn't corrupt data, but it causes performance
degradation.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: dc8a01ae1dbd ("dm writecache: optimize superblock write")
Cc: stable@vger.kernel.org # v5.7+
Reported-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-writecache.c diff | blob | history
Domain: System / Kernel;