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>

2 files changed, 6 insertions, 14 deletions

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index b90dbe55403a..d7947d90ccc3 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -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;
         }
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index c3b76d091450..0dfeebae2a50 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -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;