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f2fs: use for_each_set_bit to simplify the code 

This patch uses for_each_set_bit to simplify some codes in f2fs.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2014-08-04 10:10:07 +08:00 committed by Jaegeuk Kim
parent 497a0930bb
commit b65ee14818
2 changed files with 6 additions and 14 deletions
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7
fs/f2fs/gc.c
View File

@ -186,7 +186,6 @@ static unsigned int get_max_cost(struct f2fs_sb_info *sbi,
static unsigned int check_bg_victims(struct f2fs_sb_info *sbi)
{
struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
unsigned int hint = 0;
unsigned int secno;
/*
@ -194,11 +193,9 @@ static unsigned int check_bg_victims(struct f2fs_sb_info *sbi)
* selected by background GC before.
* Those segments guarantee they have small valid blocks.
*/
next:
secno = find_next_bit(dirty_i->victim_secmap, TOTAL_SECS(sbi), hint++);
if (secno < TOTAL_SECS(sbi)) {
for_each_set_bit(secno, dirty_i->victim_secmap, TOTAL_SECS(sbi)) {
if (sec_usage_check(sbi, secno))
goto next;
continue;
clear_bit(secno, dirty_i->victim_secmap);
return secno * sbi->segs_per_sec;
}

13
fs/f2fs/segment.c
View File

@ -439,17 +439,12 @@ static void add_discard_addrs(struct f2fs_sb_info *sbi,
static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi)
{
struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
unsigned int segno = -1;
unsigned int segno;
unsigned int total_segs = TOTAL_SEGS(sbi);
mutex_lock(&dirty_i->seglist_lock);
while (1) {
segno = find_next_bit(dirty_i->dirty_segmap[PRE], total_segs,
segno + 1);
if (segno >= total_segs)
break;
for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], total_segs)
__set_test_and_free(sbi, segno);
}
mutex_unlock(&dirty_i->seglist_lock);
}
@ -1531,7 +1526,7 @@ void flush_sit_entries(struct f2fs_sb_info *sbi)
struct page *page = NULL;
struct f2fs_sit_block *raw_sit = NULL;
unsigned int start = 0, end = 0;
unsigned int segno = -1;
unsigned int segno;
bool flushed;
mutex_lock(&curseg->curseg_mutex);
@ -1543,7 +1538,7 @@ void flush_sit_entries(struct f2fs_sb_info *sbi)
*/
flushed = flush_sits_in_journal(sbi);
while ((segno = find_next_bit(bitmap, nsegs, segno + 1)) < nsegs) {
for_each_set_bit(segno, bitmap, nsegs) {
struct seg_entry *se = get_seg_entry(sbi, segno);
int sit_offset, offset;