[PATCH] xfs: fix unused variable warning in buffer completion on !DEBUG

From: Brian Foster <bfoster@redhat.com>
To: linux-xfs@vger.kernel.org
Cc: "Darrick J . Wong" <darrick.wong@oracle.com>
Subject: [PATCH] xfs: fix unused variable warning in buffer completion on !DEBUG
Date: Fri,  8 May 2020 06:55:59 -0400	[thread overview]
Message-ID: <20200508105559.27037-1-bfoster@redhat.com> (raw)
In-Reply-To: <20200508111518.27b22640@canb.auug.org.au>

The random buffer write failure errortag patch introduced a local
mount pointer variable for the test macro, but the macro is compiled
out on !DEBUG kernels. This results in an unused variable warning.

Access the mount structure through the buffer pointer and remove the
local mount pointer to address the warning.

Fixes: 7376d745473 ("xfs: random buffer write failure errortag")
Signed-off-by: Brian Foster <bfoster@redhat.com>
---

Feel free to fold this into the original commit or merge independently.
Sorry for the noise..

Brian

 fs/xfs/xfs_buf.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 9d8841ac7375..9c2fbb6bbf89 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1289,11 +1289,10 @@ xfs_buf_bio_end_io(
 	struct bio		*bio)
 {
 	struct xfs_buf		*bp = (struct xfs_buf *)bio->bi_private;
-	struct xfs_mount	*mp = bp->b_mount;
 
 	if (!bio->bi_status &&
 	    (bp->b_flags & XBF_WRITE) && (bp->b_flags & XBF_ASYNC) &&
-	    XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BUF_IOERROR))
+	    XFS_TEST_ERROR(false, bp->b_mount, XFS_ERRTAG_BUF_IOERROR))
 		bio->bi_status = BLK_STS_IOERR;
 
 	/*
-- 
2.21.1

