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From:   Jia-Ju Bai <baijiaju1990@gmail.com>
To:     jack@suse.cz, akpm@linux-foundation.org, arnd@arndb.de,
        hariprasad.kelam@gmail.com, linux.bhar@gmail.com
Cc:     reiserfs-devel@vger.kernel.org, linux-kernel@vger.kernel.org,
        Jia-Ju Bai <baijiaju1990@gmail.com>
Subject: [PATCH] fs: reiserfs: Remove unnecessary check of bh in remove_from_transaction()
Date:   Sat, 27 Jul 2019 16:40:19 +0800
Message-Id: <20190727084019.11307-1-baijiaju1990@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On lines 3430-3434, bh has been assured to be non-null:
    cn = get_journal_hash_dev(sb, journal->j_hash_table, blocknr);
    if (!cn || !cn->bh) {
        return ret;
    }
    bh = cn->bh;

Thus, the check of bh on line 3447 is unnecessary and can be removed.
Thank Andrew Morton for good advice.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
---
 fs/reiserfs/journal.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 4517a1394c6f..11155b8513db 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -3444,9 +3444,8 @@ static int remove_from_transaction(struct super_block *sb,
 	if (cn == journal->j_last) {
 		journal->j_last = cn->prev;
 	}
-	if (bh)
-		remove_journal_hash(sb, journal->j_hash_table, NULL,
-				    bh->b_blocknr, 0);
+	remove_journal_hash(sb, journal->j_hash_table, NULL,
+			    bh->b_blocknr, 0);
 	clear_buffer_journaled(bh);	/* don't log this one */
 
 	if (!already_cleaned) {
-- 
2.17.0