From: NeilBrown <neilb@suse.de>
Date: Thu, 7 Oct 2010 01:00:50 +0000 (+1100)
Subject: md/raid1: minor bio initialisation improvements.
X-Git-Tag: v2.6.36-rc8~28^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=db8d9d3591f77cc6b66248b2cdfa1c43deee5ec9;p=platform%2Fkernel%2Flinux-exynos.git

md/raid1: minor bio initialisation improvements.


When performing a resync we pre-allocate some bios and repeatedly use
them.  This requires us to re-initialise them each time.
One field (bi_comp_cpu) and some flags weren't being initiaised
reliably.

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index fba4d2f..0b830bb 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1839,7 +1839,9 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
 
 		/* take from bio_init */
 		bio->bi_next = NULL;
+		bio->bi_flags &= ~(BIO_POOL_MASK-1);
 		bio->bi_flags |= 1 << BIO_UPTODATE;
+		bio->bi_comp_cpu = -1;
 		bio->bi_rw = READ;
 		bio->bi_vcnt = 0;
 		bio->bi_idx = 0;