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| author | NeilBrown <neilb@suse.de> | 2010-10-27 08:37:41 +0400 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2010-10-29 09:40:32 +0400 |
| commit | be2a2656eef95c32ca73e7a6a8c85671aa92e3f1 (patch) | |
| tree | caea637e7247c0d57d8b1fe0042a5b7a0994ed9c | |
| parent | a167f663243662aa9153c01086580a11cde9ffdc (diff) | |
| download | linux-be2a2656eef95c32ca73e7a6a8c85671aa92e3f1.tar.xz | |
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 <neilb@suse.de>
| -rw-r--r-- | drivers/md/bitmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; } |