[PATCH] f2fs: fix wrong sum_page pointer in f2fs_gc

[Jaegeuk Kim]

This patch fixes using a wrong pointer for sum_page in f2fs_gc.

Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
 fs/f2fs/gc.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index e48142f..9c18917 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -854,16 +854,16 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
 
        for (segno = start_segno; segno < end_segno; segno++) {
 
-               if (get_valid_blocks(sbi, segno, 1) == 0 ||
-                                       unlikely(f2fs_cp_error(sbi)))
-                       goto next;
-
                /* find segment summary of victim */
                sum_page = find_get_page(META_MAPPING(sbi),
                                        GET_SUM_BLOCK(sbi, segno));
-               f2fs_bug_on(sbi, !PageUptodate(sum_page));
                f2fs_put_page(sum_page, 0);
 
+               if (get_valid_blocks(sbi, segno, 1) == 0 ||
+                               !PageUptodate(sum_page) ||
+                               unlikely(f2fs_cp_error(sbi)))
+                       goto next;
+
                sum = page_address(sum_page);
                f2fs_bug_on(sbi, type != GET_SUM_TYPE((&sum->footer)));
 
-- 
2.8.3