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Btrfs: using for_each_set_bit_from to simplify the code

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Using for_each_set_bit_from() to simplify the code.

spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
This commit is contained in:
Wei Yongjun 2012-09-13 20:29:02 -06:00 committed by Chris Mason
parent 1bcea35597
commit ebb3dad435
1 changed files with 2 additions and 6 deletions
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8
fs/btrfs/free-space-cache.c
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@ -1454,9 +1454,7 @@ static int search_bitmap(struct btrfs_free_space_ctl *ctl,
max_t(u64, *offset, bitmap_info->offset));
bits = bytes_to_bits(*bytes, ctl->unit);
for (i = find_next_bit(bitmap_info->bitmap, BITS_PER_BITMAP, i);
i < BITS_PER_BITMAP;
i = find_next_bit(bitmap_info->bitmap, BITS_PER_BITMAP, i + 1)) {
for_each_set_bit_from(i, bitmap_info->bitmap, BITS_PER_BITMAP) {
next_zero = find_next_zero_bit(bitmap_info->bitmap,
BITS_PER_BITMAP, i);
if ((next_zero - i) >= bits) {
@ -2307,9 +2305,7 @@ static int btrfs_bitmap_cluster(struct btrfs_block_group_cache *block_group,
again:
found_bits = 0;
for (i = find_next_bit(entry->bitmap, BITS_PER_BITMAP, i);
i < BITS_PER_BITMAP;
i = find_next_bit(entry->bitmap, BITS_PER_BITMAP, i + 1)) {
for_each_set_bit_from(i, entry->bitmap, BITS_PER_BITMAP) {
next_zero = find_next_zero_bit(entry->bitmap,
BITS_PER_BITMAP, i);
if (next_zero - i >= min_bits) {