linux-kernel - [PATCH 17/17] drbd: fix if(); found by kbuild test robot

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Date:	Wed, 27 Mar 2013 14:08:49 +0100
From:	Philipp Reisner <philipp.reisner@...bit.com>
To:	linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>
Cc:	drbd-dev@...ts.linbit.com,
	Lars Ellenberg <lars.ellenberg@...bit.com>,
	Philipp Reisner <philipp.reisner@...bit.com>
Subject: [PATCH 17/17] drbd: fix if(); found by kbuild test robot

From: Lars Ellenberg <lars.ellenberg@...bit.com>

Recently introduced al_begin_io_nonblock() was returning -EBUSY,
even when it should return -EWOULDBLOCK.

Impact:
A few spurious wake_up() calls in prepare_al_transaction_nonblock().

Signed-off-by: Philipp Reisner <philipp.reisner@...bit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@...bit.com>
---
 drivers/block/drbd/drbd_actlog.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 6afe173..6608076 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -389,7 +389,7 @@ int drbd_al_begin_io_nonblock(struct drbd_conf *mdev, struct drbd_interval *i)
 		if (unlikely(tmp != NULL)) {
 			struct bm_extent  *bm_ext = lc_entry(tmp, struct bm_extent, lce);
 			if (test_bit(BME_NO_WRITES, &bm_ext->flags)) {
-				if (!test_and_set_bit(BME_PRIORITY, &bm_ext->flags));
+				if (!test_and_set_bit(BME_PRIORITY, &bm_ext->flags))
 					return -EBUSY;
 				return -EWOULDBLOCK;
 			}
-- 
1.7.9.5

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