f2fs: no need to check other dirty_segmap when the seg has been found

Because one dirty seg can only be mapped to one dirty_type. Otherwise, it's a bug.

Signed-off-by: Haicheng Li <haicheng.li@linux.intel.com>
[Jaegeuk Kim: modify a comment related to this patch]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 862fef3ae253..8ac161965242 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -78,10 +78,14 @@ static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
         if (dirty_type == DIRTY) {
                 enum dirty_type t = DIRTY_HOT_DATA;
 
-                /* clear all the bitmaps */
-                for (; t <= DIRTY_COLD_NODE; t++)
-                        if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t]))
+                /* clear its dirty bitmap */
+                for (; t <= DIRTY_COLD_NODE; t++) {
+                        if (test_and_clear_bit(segno,
+                                                dirty_i->dirty_segmap[t])) {
                                 dirty_i->nr_dirty[t]--;
+                                break;
+                        }
+                }
 
                 if (get_valid_blocks(sbi, segno, sbi->segs_per_sec) == 0)
                         clear_bit(GET_SECNO(sbi, segno),