linux-kernel - [PATCH] reiserfs: simplify conditional

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Date:	Thu, 7 Oct 2010 12:50:15 +0200
From:	Nicolas Kaiser <nikai@...ai.net>
To:	reiserfs-devel@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] reiserfs: simplify conditional

Simplify:
 ((!a && b) || (!a && c) || (!a && d) || (!a && e)) =>
  (!a && (b || c || d || e))

Signed-off-by: Nicolas Kaiser <nikai@...ai.net>
---
 fs/reiserfs/journal.c |   17 ++++++++---------
 1 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 076c8b1..7fa0814 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -3055,15 +3055,14 @@ static int do_journal_begin_r(struct reiserfs_transaction_handle *th,
 	 ** we don't sleep if there aren't other writers
 	 */
 
-	if ((!join && journal->j_must_wait > 0) ||
-	    (!join
-	     && (journal->j_len_alloc + nblocks + 2) >= journal->j_max_batch)
-	    || (!join && atomic_read(&journal->j_wcount) > 0
-		&& journal->j_trans_start_time > 0
-		&& (now - journal->j_trans_start_time) >
-		journal->j_max_trans_age) || (!join
-					      && atomic_read(&journal->j_jlock))
-	    || (!join && journal->j_cnode_free < (journal->j_trans_max * 3))) {
+	if (!join &&
+	    ((journal->j_must_wait > 0) ||
+	     ((journal->j_len_alloc + nblocks + 2) >= journal->j_max_batch) ||
+	     (atomic_read(&journal->j_wcount) > 0 &&
+	      journal->j_trans_start_time > 0 &&
+	      (now - journal->j_trans_start_time) > journal->j_max_trans_age) ||
+	     (atomic_read(&journal->j_jlock)) ||
+	     (journal->j_cnode_free < (journal->j_trans_max * 3)))) {
 
 		old_trans_id = journal->j_trans_id;
 		unlock_journal(sb);	/* allow others to finish this transaction */
-- 
1.7.2.2
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