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authorTakashi Iwai <tiwai@suse.de>2012-08-20 21:26:04 +0200
committerTakashi Iwai <tiwai@suse.de>2012-08-20 21:26:04 +0200
commitf0b433e9f362e0b7f0ce7d1489dd7feba068605d (patch)
treed4bfd9489cf4a96a55d83af20919f477a846d585 /fs/ext4/bitmap.c
parentfa2f5bf09610d3c216d4c74855edbe00d636467c (diff)
parent28c42c28309244d0b15d1b385e33429d59997679 (diff)
Merge tag 'asoc-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Additional updates for 3.6 A batch more bugfixes, all driver-specific and fairly small and unremarkable in a global context. The biggest batch are for the newly added Arizona drivers.
Diffstat (limited to 'fs/ext4/bitmap.c')
-rw-r--r--fs/ext4/bitmap.c17
1 files changed, 2 insertions, 15 deletions
diff --git a/fs/ext4/bitmap.c b/fs/ext4/bitmap.c
index b319721da26a..f8716eab9995 100644
--- a/fs/ext4/bitmap.c
+++ b/fs/ext4/bitmap.c
@@ -11,24 +11,11 @@
#include <linux/jbd2.h>
#include "ext4.h"
-#ifdef EXT4FS_DEBUG
-
-static const int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};
-
-unsigned int ext4_count_free(struct buffer_head *map, unsigned int numchars)
+unsigned int ext4_count_free(char *bitmap, unsigned int numchars)
{
- unsigned int i, sum = 0;
-
- if (!map)
- return 0;
- for (i = 0; i < numchars; i++)
- sum += nibblemap[map->b_data[i] & 0xf] +
- nibblemap[(map->b_data[i] >> 4) & 0xf];
- return sum;
+ return numchars * BITS_PER_BYTE - memweight(bitmap, numchars);
}
-#endif /* EXT4FS_DEBUG */
-
int ext4_inode_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
struct ext4_group_desc *gdp,
struct buffer_head *bh, int sz)