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| author | Theodore Ts'o <tytso@mit.edu> | 2012-06-30 19:14:57 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-06-30 19:14:57 -0400 |
| commit | f6fb99cadcd44660c68e13f6eab28333653621e6 (patch) | |
| tree | 4075bd09e5ec75bbeaa9d0ca498e50cfb0c45dfe /fs/ext4/bitmap.c | |
| parent | f4e95b3316c4daa43224753bb98f41456fef86c7 (diff) | |
| download | op-kernel-dev-f6fb99cadcd44660c68e13f6eab28333653621e6.zip op-kernel-dev-f6fb99cadcd44660c68e13f6eab28333653621e6.tar.gz | |
ext4: pass a char * to ext4_count_free() instead of a buffer_head ptr
Make it possible for ext4_count_free to operate on buffers and not
just data in buffer_heads.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
Diffstat (limited to 'fs/ext4/bitmap.c')
| -rw-r--r-- | fs/ext4/bitmap.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/ext4/bitmap.c b/fs/ext4/bitmap.c index b319721..7e86a6d 100644 --- a/fs/ext4/bitmap.c +++ b/fs/ext4/bitmap.c @@ -15,15 +15,13 @@ 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]; + sum += nibblemap[bitmap[i] & 0xf] + + nibblemap[(bitmap[i] >> 4) & 0xf]; return sum; } |
