From be2a2656eef95c32ca73e7a6a8c85671aa92e3f1 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 27 Oct 2010 15:37:41 +1100 Subject: [PATCH] md: unplug writes to external bitmaps. When writing to an 'external' bitmap we don't currently unplug the device before waiting, so we can get a 3msec delay each time; So use REQ_UNPLUG to force and unplug. Signed-off-by: NeilBrown --- drivers/md/bitmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index fdde0279755f..5a1ffe3527aa 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -343,7 +343,7 @@ static void write_page(struct bitmap *bitmap, struct page *page, int wait) atomic_inc(&bitmap->pending_writes); set_buffer_locked(bh); set_buffer_mapped(bh); - submit_bh(WRITE, bh); + submit_bh(WRITE | REQ_UNPLUG | REQ_SYNC, bh); bh = bh->b_this_page; } -- 2.30.2