linux-kernel - [PATCH v4 21/24] dm: use little-endian bit operations

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Message-Id: <1295183333-13802-22-git-send-email-akinobu.mita@gmail.com>
Date:	Sun, 16 Jan 2011 22:08:50 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	akpm@...ux-foundation.org
Cc:	Akinobu Mita <akinobu.mita@...il.com>,
	Alasdair Kergon <agk@...hat.com>
Subject: [PATCH v4 21/24] dm: use little-endian bit operations

As a preparation for removing ext2 non-atomic bit operations from
asm/bitops.h.  This converts ext2 non-atomic bit operations to
little-endian bit operations.

Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Cc: Alasdair Kergon <agk@...hat.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---

Change from v3:
 - change to the post-fix notation e.g. s/test_le_bit/test_bit_le/

The whole series is available in the git repository at:
 git://git.kernel.org/pub/scm/linux/kernel/git/mita/linux-2.6.git le-bitops-v4

 drivers/md/dm-log.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c
index 6951536..57968eb 100644
--- a/drivers/md/dm-log.c
+++ b/drivers/md/dm-log.c
@@ -251,20 +251,20 @@ struct log_c {
  */
 static inline int log_test_bit(uint32_t *bs, unsigned bit)
 {
-	return ext2_test_bit(bit, (unsigned long *) bs) ? 1 : 0;
+	return test_bit_le(bit, (unsigned long *) bs) ? 1 : 0;
 }
 
 static inline void log_set_bit(struct log_c *l,
 			       uint32_t *bs, unsigned bit)
 {
-	ext2_set_bit(bit, (unsigned long *) bs);
+	__test_and_set_bit_le(bit, (unsigned long *) bs);
 	l->touched_cleaned = 1;
 }
 
 static inline void log_clear_bit(struct log_c *l,
 				 uint32_t *bs, unsigned bit)
 {
-	ext2_clear_bit(bit, (unsigned long *) bs);
+	__test_and_clear_bit_le(bit, (unsigned long *) bs);
 	l->touched_dirtied = 1;
 }
 
@@ -740,7 +740,7 @@ static int core_get_resync_work(struct dm_dirty_log *log, region_t *region)
 		return 0;
 
 	do {
-		*region = ext2_find_next_zero_bit(
+		*region = find_next_zero_bit_le(
 					     (unsigned long *) lc->sync_bits,
 					     lc->region_count,
 					     lc->sync_search);
-- 
1.7.3.4

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