linux-kernel - [PATCH] fs: xfs: xfs_log: Change return type from int to void

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Date:   Tue, 2 Jul 2019 23:45:47 +0530
From:   Hariprasad Kelam <hariprasad.kelam@...il.com>
To:     "Darrick J. Wong" <darrick.wong@...cle.com>,
        linux-xfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] fs: xfs: xfs_log: Change return type from int to void

Change return types of below functions as they never fails
xfs_log_mount_cancel
xlog_recover_cancel
xlog_recover_cancel_intents

fix below issue reported by coccicheck
fs/xfs/xfs_log_recover.c:4886:7-12: Unneeded variable: "error". Return
"0" on line 4926

Signed-off-by: Hariprasad Kelam <hariprasad.kelam@...il.com>
---
 fs/xfs/xfs_log.c         |  8 ++------
 fs/xfs/xfs_log.h         |  2 +-
 fs/xfs/xfs_log_priv.h    |  2 +-
 fs/xfs/xfs_log_recover.c | 12 +++---------
 4 files changed, 7 insertions(+), 17 deletions(-)

diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index cbaf348..00e9f5c 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -769,16 +769,12 @@ xfs_log_mount_finish(
  * The mount has failed. Cancel the recovery if it hasn't completed and destroy
  * the log.
  */
-int
+void
 xfs_log_mount_cancel(
 	struct xfs_mount	*mp)
 {
-	int			error;
-
-	error = xlog_recover_cancel(mp->m_log);
+	xlog_recover_cancel(mp->m_log);
 	xfs_log_unmount(mp);
-
-	return error;
 }
 
 /*
diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h
index f27b1cb..84e0680 100644
--- a/fs/xfs/xfs_log.h
+++ b/fs/xfs/xfs_log.h
@@ -117,7 +117,7 @@ int	  xfs_log_mount(struct xfs_mount	*mp,
 			xfs_daddr_t		start_block,
 			int		 	num_bblocks);
 int	  xfs_log_mount_finish(struct xfs_mount *mp);
-int	xfs_log_mount_cancel(struct xfs_mount *);
+void	xfs_log_mount_cancel(struct xfs_mount *);
 xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp);
 xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp);
 void	  xfs_log_space_wake(struct xfs_mount *mp);
diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h
index 8acacbc..b880c23 100644
--- a/fs/xfs/xfs_log_priv.h
+++ b/fs/xfs/xfs_log_priv.h
@@ -418,7 +418,7 @@ xlog_recover(
 extern int
 xlog_recover_finish(
 	struct xlog		*log);
-extern int
+extern void
 xlog_recover_cancel(struct xlog *);
 
 extern __le32	 xlog_cksum(struct xlog *log, struct xlog_rec_header *rhead,
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 1fc70ac..13d1d3e 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -4875,12 +4875,11 @@ xlog_recover_process_intents(
  * A cancel occurs when the mount has failed and we're bailing out.
  * Release all pending log intent items so they don't pin the AIL.
  */
-STATIC int
+STATIC void
 xlog_recover_cancel_intents(
 	struct xlog		*log)
 {
 	struct xfs_log_item	*lip;
-	int			error = 0;
 	struct xfs_ail_cursor	cur;
 	struct xfs_ail		*ailp;
 
@@ -4920,7 +4919,6 @@ xlog_recover_cancel_intents(
 
 	xfs_trans_ail_cursor_done(&cur);
 	spin_unlock(&ailp->ail_lock);
-	return error;
 }
 
 /*
@@ -5779,16 +5777,12 @@ xlog_recover_finish(
 	return 0;
 }
 
-int
+void
 xlog_recover_cancel(
 	struct xlog	*log)
 {
-	int		error = 0;
-
 	if (log->l_flags & XLOG_RECOVERY_NEEDED)
-		error = xlog_recover_cancel_intents(log);
-
-	return error;
+		xlog_recover_cancel_intents(log);
 }
 
 #if defined(DEBUG)
-- 
2.7.4