linux-kernel - [PATCH v4 13/24] ext3: use little-endian bitops

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Date:	Sun, 16 Jan 2011 22:08:42 +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>,
	Andreas Dilger <adilger.kernel@...ger.ca>,
	Jan Kara <jack@...e.cz>
Subject: [PATCH v4 13/24] ext3: use little-endian bitops

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>
Acked-by: Jan Kara <jack@...e.cz>
Cc: Andreas Dilger <adilger.kernel@...ger.ca>
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

 include/linux/ext3_fs.h |   15 ++++++++++-----
 1 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index 65990ef..0faf57c 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -418,13 +418,18 @@ struct ext3_inode {
 #define EXT2_MOUNT_DATA_FLAGS		EXT3_MOUNT_DATA_FLAGS
 #endif
 
-#define ext3_set_bit			ext2_set_bit
+#define ext3_set_bit(nr, addr)	\
+	__test_and_set_bit_le((nr), (unsigned long *)(addr))
 #define ext3_set_bit_atomic		ext2_set_bit_atomic
-#define ext3_clear_bit			ext2_clear_bit
+#define ext3_clear_bit(nr, addr)	\
+	__test_and_clear_bit_le((nr), (unsigned long *)(addr))
 #define ext3_clear_bit_atomic		ext2_clear_bit_atomic
-#define ext3_test_bit			ext2_test_bit
-#define ext3_find_first_zero_bit	ext2_find_first_zero_bit
-#define ext3_find_next_zero_bit		ext2_find_next_zero_bit
+#define ext3_test_bit(nr, addr)	\
+	test_bit_le((nr), (unsigned long *)(addr))
+#define ext3_find_first_zero_bit(addr, size)	\
+	find_first_zero_bit_le((unsigned long *)(addr), (size))
+#define ext3_find_next_zero_bit(addr, size, off)	\
+	find_next_zero_bit_le((unsigned long *)(addr), (size), (off))
 
 /*
  * Maximal mount counts between two filesystem checks
-- 
1.7.3.4

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