diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2012-06-30 19:14:57 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-09 08:23:12 -0700 |
| commit | 74c429a11be427b0f2a7f02e585dc49a148a0e82 (patch) | |
| tree | 333dd974971bdb9c515e5f6ac7ff7b813c8eef02 /fs/ext4/bitmap.c | |
| parent | 5f66feb6035d82c46c1a63f540366ad7748e0719 (diff) | |
ext4: pass a char * to ext4_count_free() instead of a buffer_head ptr
commit f6fb99cadcd44660c68e13f6eab28333653621e6 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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 b319721da26..7e86a6d28c6 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; } |