| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1306763382-13817-2-git-send-email-akinobu.mita@gmail.com>
Date: Mon, 30 May 2011 22:49:42 +0900
From: Akinobu Mita <akinobu.mita@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Akinobu Mita <akinobu.mita@...il.com>,
"Theodore Ts'o" <tytso@....edu>,
Andreas Dilger <adilger.kernel@...ger.ca>,
linux-ext4@...r.kernel.org
Subject: [PATCH 2/2] ext4: use proper little-endian bitops
Using __test_and_{set,clear}_bit_le() with ignoring its return value
can be replaced with __{set,clear}_bit_le().
Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Cc: "Theodore Ts'o" <tytso@....edu>
Cc: Andreas Dilger <adilger.kernel@...ger.ca>
Cc: linux-ext4@...r.kernel.org
---
fs/ext4/balloc.c | 8 ++++----
fs/ext4/ialloc.c | 2 +-
fs/ext4/mballoc.c | 4 ++--
fs/ext4/resize.c | 12 ++++++------
4 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 6230bf0..470bc03 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -144,7 +144,7 @@ unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
int flex_bg = 0;
for (bit = 0; bit < bit_max; bit++)
- __test_and_set_bit_le(bit, bh->b_data);
+ __set_bit_le(bit, bh->b_data);
start = ext4_group_first_block_no(sb, block_group);
@@ -155,18 +155,18 @@ unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
/* Set bits for block and inode bitmaps, and inode table */
tmp = ext4_block_bitmap(sb, gdp);
if (!flex_bg || ext4_block_in_group(sb, tmp, block_group))
- __test_and_set_bit_le(tmp - start, bh->b_data);
+ __set_bit_le(tmp - start, bh->b_data);
tmp = ext4_inode_bitmap(sb, gdp);
if (!flex_bg || ext4_block_in_group(sb, tmp, block_group))
- __test_and_set_bit_le(tmp - start, bh->b_data);
+ __set_bit_le(tmp - start, bh->b_data);
tmp = ext4_inode_table(sb, gdp);
for (; tmp < ext4_inode_table(sb, gdp) +
sbi->s_itb_per_group; tmp++) {
if (!flex_bg ||
ext4_block_in_group(sb, tmp, block_group))
- __test_and_set_bit_le(tmp - start, bh->b_data);
+ __set_bit_le(tmp - start, bh->b_data);
}
/*
* Also if the number of blocks within the group is
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 450d149..061a2406 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -59,7 +59,7 @@ void ext4_mark_bitmap_end(int start_bit, int end_bit, char *bitmap)
ext4_debug("mark end bits +%d through +%d used\n", start_bit, end_bit);
for (i = start_bit; i < ((start_bit + 7) & ~7UL); i++)
- __test_and_set_bit_le(i, bitmap);
+ __set_bit_le(i, bitmap);
if (i < end_bit)
memset(bitmap + (i >> 3), 0xff, (end_bit - i) >> 3);
}
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 15b1716..80c7eb9 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -384,13 +384,13 @@ static inline int mb_test_bit(int bit, void *addr)
static inline void mb_set_bit(int bit, void *addr)
{
addr = mb_correct_addr_and_bit(&bit, addr);
- __test_and_set_bit_le(bit, addr);
+ __set_bit_le(bit, addr);
}
static inline void mb_clear_bit(int bit, void *addr)
{
addr = mb_correct_addr_and_bit(&bit, addr);
- __test_and_clear_bit_le(bit, addr);
+ __clear_bit_le(bit, addr);
}
static inline int mb_find_next_zero_bit(void *addr, int max, int start)
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 09e7f54..53d17fa 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -194,7 +194,7 @@ static int setup_new_group_blocks(struct super_block *sb,
if (ext4_bg_has_super(sb, input->group)) {
ext4_debug("mark backup superblock %#04llx (+0)\n", start);
- __test_and_set_bit_le(0, bh->b_data);
+ __set_bit_le(0, bh->b_data);
}
/* Copy all of the GDT blocks into the backup in this group */
@@ -225,7 +225,7 @@ static int setup_new_group_blocks(struct super_block *sb,
brelse(gdb);
goto exit_bh;
}
- __test_and_set_bit_le(bit, bh->b_data);
+ __set_bit_le(bit, bh->b_data);
brelse(gdb);
}
@@ -237,14 +237,14 @@ static int setup_new_group_blocks(struct super_block *sb,
if (err)
goto exit_bh;
for (i = 0, bit = gdblocks + 1; i < reserved_gdb; i++, bit++)
- __test_and_set_bit_le(bit, bh->b_data);
+ __set_bit_le(bit, bh->b_data);
ext4_debug("mark block bitmap %#04llx (+%llu)\n", input->block_bitmap,
input->block_bitmap - start);
- __test_and_set_bit_le(input->block_bitmap - start, bh->b_data);
+ __set_bit_le(input->block_bitmap - start, bh->b_data);
ext4_debug("mark inode bitmap %#04llx (+%llu)\n", input->inode_bitmap,
input->inode_bitmap - start);
- __test_and_set_bit_le(input->inode_bitmap - start, bh->b_data);
+ __set_bit_le(input->inode_bitmap - start, bh->b_data);
/* Zero out all of the inode table blocks */
block = input->inode_table;
@@ -255,7 +255,7 @@ static int setup_new_group_blocks(struct super_block *sb,
goto exit_bh;
for (i = 0, bit = input->inode_table - start;
i < sbi->s_itb_per_group; i++, bit++)
- __test_and_set_bit_le(bit, bh->b_data);
+ __set_bit_le(bit, bh->b_data);
if ((err = extend_or_restart_transaction(handle, 2, bh)))
goto exit_bh;
--
1.7.4.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists