f2fs: write checkpoint before starting FG_GC

In order to be aware of prefree and free sections during FG_GC, let's start with
write_checkpoint().

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 83cec8f868c6..37b05e1c574c 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -669,8 +669,10 @@ gc_more:
         if (!(sbi->sb->s_flags & MS_ACTIVE))
                 goto stop;
 
-        if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree))
+        if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree)) {
                 gc_type = FG_GC;
+                write_checkpoint(sbi, false);
+        }
 
         if (!__get_victim(sbi, &segno, gc_type, NO_CHECK_TYPE))
                 goto stop;