diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2012-07-30 14:41:06 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-30 17:25:16 -0700 |
| commit | 10d470849a7c6dd360e8ad4770160ad7af9adb4b (patch) | |
| tree | d01812ca318a12e2a95a2bf46baa448f282fc234 /fs/ext3/balloc.c | |
| parent | ecd0afa3ced0ebf36901b53fd9ee431f8a34a161 (diff) | |
ext3: use memweight()
Convert ext3_count_free() to use memweight() instead of table lookup
based counting clear bits implementation. This change only affects the
code segments enabled by EXT3FS_DEBUG.
Note that this memweight() call can't be replaced with a single
bitmap_weight() call, although the pointer to the memory area is aligned
to long-word boundary. Because the size of the memory area may not be a
multiple of BITS_PER_LONG, then it returns wrong value on big-endian
architecture.
This also includes the following changes.
- Remove unnecessary map == NULL check in ext3_count_free() which
always takes non-null pointer as the memory area.
- Fix printk format warning that only reveals with EXT3FS_DEBUG.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Jan Kara <jack@suse.cz>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext3/balloc.c')
| -rw-r--r-- | fs/ext3/balloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c index 25cd60892116..90d901f0486b 100644 --- a/fs/ext3/balloc.c +++ b/fs/ext3/balloc.c @@ -1813,7 +1813,7 @@ ext3_fsblk_t ext3_count_free_blocks(struct super_block *sb) brelse(bitmap_bh); printk("ext3_count_free_blocks: stored = "E3FSBLK ", computed = "E3FSBLK", "E3FSBLK"\n", - le32_to_cpu(es->s_free_blocks_count), + (ext3_fsblk_t)le32_to_cpu(es->s_free_blocks_count), desc_count, bitmap_count); return bitmap_count; #else |