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| author | Shen Feng <shen@cn.fujitsu.com> | 2008-07-14 05:03:31 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-07-14 05:03:31 +0400 |
| commit | 7e5a8cdd843b7af8d6d38a9bf96306145edb66e0 (patch) | |
| tree | 68c9dd5f35938520333f2c364a48c94f4e38566b | |
| parent | cfbe7e4f5e4a0e1fc2ff23b167bfb3fa992f623d (diff) | |
| download | linux-7e5a8cdd843b7af8d6d38a9bf96306145edb66e0.tar.xz | |
ext4: fix error processing in mb_free_blocks
The error processing of the return value of mb_free_blocks is meanless
because it only returns 0. This fix includes
- make mb_free_blocks return void
- remove the error processing part in callers
- unlock group before calling ext4_error in mb_free_blocks
Signed-off-by: Shen Feng <shen@cn.fujitsu.com>
Cc: Mingming Cao <cmm@us.ibm.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/mballoc.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 771a1d608528..b882868f4661 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -1051,7 +1051,7 @@ static void mb_set_bits(spinlock_t *lock, void *bm, int cur, int len) } } -static int mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b, +static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b, int first, int count) { int block = 0; @@ -1091,11 +1091,12 @@ static int mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b, blocknr += block; blocknr += le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block); - + ext4_unlock_group(sb, e4b->bd_group); ext4_error(sb, __func__, "double-free of inode" " %lu's block %llu(bit %u in group %lu)\n", inode ? inode->i_ino : 0, blocknr, block, e4b->bd_group); + ext4_lock_group(sb, e4b->bd_group); } mb_clear_bit(block, EXT4_MB_BITMAP(e4b)); e4b->bd_info->bb_counters[order]++; @@ -1133,8 +1134,6 @@ static int mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b, } while (1); } mb_check_buddy(e4b); - - return 0; } static int mb_find_extent(struct ext4_buddy *e4b, int order, int block, @@ -2570,8 +2569,7 @@ ext4_mb_free_committed_blocks(struct super_block *sb) ext4_lock_group(sb, md->group); for (i = 0; i < md->num; i++) { mb_debug(" %u", md->blocks[i]); - err = mb_free_blocks(NULL, &e4b, md->blocks[i], 1); - BUG_ON(err != 0); + mb_free_blocks(NULL, &e4b, md->blocks[i], 1); } mb_debug("\n"); ext4_unlock_group(sb, md->group); @@ -4333,10 +4331,9 @@ do_more: ext4_mb_free_metadata(handle, &e4b, block_group, bit, count); } else { ext4_lock_group(sb, block_group); - err = mb_free_blocks(inode, &e4b, bit, count); + mb_free_blocks(inode, &e4b, bit, count); ext4_mb_return_to_preallocation(inode, &e4b, block, count); ext4_unlock_group(sb, block_group); - BUG_ON(err != 0); } spin_lock(sb_bgl_lock(sbi, block_group)); |