f2fs: fix f2fs_write_meta_page at no checkpoint status

If f2fs entered errorneous checkpoint status, it should skip writing meta
pages instead of redirtying the pages out.
Otherwise, it cannot unmount the partition even though f2fs is under read-only
status.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index ea0371e854b4..b0f57628fe55 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -701,6 +701,8 @@ int f2fs_gc(struct f2fs_sb_info *sbi)
 gc_more:
         if (unlikely(!(sbi->sb->s_flags & MS_ACTIVE)))
                 goto stop;
+        if (unlikely(is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG)))
+                goto stop;
 
         if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree)) {
                 gc_type = FG_GC;