diff mbox series

[5.10,066/102] f2fs: handle unallocated section and zone on pinned/atgc

Message ID 20210305120906.527131145@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman March 5, 2021, 12:21 p.m. UTC 
From: Jaegeuk Kim <jaegeuk@kernel.org>

[ Upstream commit 632faca72938f9f63049e48a8c438913828ac7a9 ]

If we have large section/zone, unallocated segment makes them corrupted.

E.g.,

  - Pinned file:       -1 119304647 119304647
  - ATGC   data:       -1 119304647 119304647

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/f2fs/segment.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index e81eb0748e2a..229814b4f4a6 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -101,11 +101,11 @@  static inline void sanity_check_seg_type(struct f2fs_sb_info *sbi,
 #define BLKS_PER_SEC(sbi)					\
 	((sbi)->segs_per_sec * (sbi)->blocks_per_seg)
 #define GET_SEC_FROM_SEG(sbi, segno)				\
-	((segno) / (sbi)->segs_per_sec)
+	(((segno) == -1) ? -1: (segno) / (sbi)->segs_per_sec)
 #define GET_SEG_FROM_SEC(sbi, secno)				\
 	((secno) * (sbi)->segs_per_sec)
 #define GET_ZONE_FROM_SEC(sbi, secno)				\
-	((secno) / (sbi)->secs_per_zone)
+	(((secno) == -1) ? -1: (secno) / (sbi)->secs_per_zone)
 #define GET_ZONE_FROM_SEG(sbi, segno)				\
 	GET_ZONE_FROM_SEC(sbi, GET_SEC_FROM_SEG(sbi, segno))