From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shaohua Li Subject: [PATCH 1/2] md/raid5-cache: stripe reclaim only counts valid stripes Date: Fri, 10 Feb 2017 16:18:08 -0800 Message-ID: Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org Cc: neilb@suse.com, Song Liu List-Id: linux-raid.ids When log space is tight, we try to reclaim stripes from log head. There are stripes which can't be reclaimed right now if some conditions are met. We skip such stripes but accidentally count them, which might cause no stripes are claimed. Fixing this by only counting valid stripes. Cc: Song Liu Signed-off-by: Shaohua Li --- drivers/md/raid5-cache.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c index caae853..a01f4da 100644 --- a/drivers/md/raid5-cache.c +++ b/drivers/md/raid5-cache.c @@ -1418,9 +1418,9 @@ static void r5c_do_reclaim(struct r5conf *conf) !test_bit(STRIPE_HANDLE, &sh->state) && atomic_read(&sh->count) == 0) { r5c_flush_stripe(conf, sh); + if (count++ >= R5C_RECLAIM_STRIPE_GROUP) + break; } - if (count++ >= R5C_RECLAIM_STRIPE_GROUP) - break; } spin_unlock(&conf->device_lock); spin_unlock_irqrestore(&log->stripe_in_journal_lock, flags); -- 2.9.3