dm writecache: write at least 4k when committing

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commit 867de40c4c upstream.

SSDs perform badly with sub-4k writes (because they perfrorm
read-modify-write internally), so make sure writecache writes at least
4k when committing.

Fixes: 991bd8d7bc ("dm writecache: commit just one block, not a full page")
Signed-off-by: Mikulas Patocka <mpatocka@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 2021-06-21 14:48:29 -04:00 • committed by Greg Kroah-Hartman

parent 691e71cf1f

commit e294f97e8a

1 changed files with 5 additions and 1 deletions

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drivers/md/dm-writecache.c

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