linux-kernel - [PATCH] xfs: fix unused variable warning

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Date:   Thu,  4 Feb 2021 17:03:44 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     "Darrick J. Wong" <djwong@...nel.org>, linux-xfs@...r.kernel.org,
        Brian Foster <bfoster@...hat.com>,
        Allison Henderson <allison.henderson@...cle.com>
Cc:     Arnd Bergmann <arnd@...db.de>, Dave Chinner <dchinner@...hat.com>,
        Gao Xiang <hsiangkao@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] xfs: fix unused variable warning

From: Arnd Bergmann <arnd@...db.de>

When debugging is disabled, the ASSERT() is left out and
the 'log' variable becomes unused:

fs/xfs/xfs_log.c:1111:16: error: unused variable 'log' [-Werror,-Wunused-variable]

Remove the variable declaration and open-code it inside
of the assertion.

Fixes: 303591a0a947 ("xfs: cover the log during log quiesce")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 fs/xfs/xfs_log.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 58699881c100..d8b814227734 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -1108,12 +1108,11 @@ static int
 xfs_log_cover(
 	struct xfs_mount	*mp)
 {
-	struct xlog		*log = mp->m_log;
 	int			error = 0;
 	bool			need_covered;
 
-	ASSERT((xlog_cil_empty(log) && xlog_iclogs_empty(log) &&
-	        !xfs_ail_min_lsn(log->l_ailp)) ||
+	ASSERT((xlog_cil_empty(mp->m_log) && xlog_iclogs_empty(mp->m_log) &&
+	        !xfs_ail_min_lsn(mp->m_log->l_ailp)) ||
 	       XFS_FORCED_SHUTDOWN(mp));
 
 	if (!xfs_log_writable(mp))
-- 
2.29.2