dm writecache: fix performance degradation in ssd mode

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commit cb728484a7 upstream.

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: dc8a01ae1d ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Mikulas Patocka 2021-01-23 09:19:56 -05:00 • committed by Greg Kroah-Hartman

parent 72d17fa4ed

commit 70faef983a

1 changed files with 1 additions and 1 deletions

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drivers/md/dm-writecache.c

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