| From a71c16b58bd9cb04bf73439cd60ae6060f6b08e8 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Wed, 23 Dec 2020 11:44:25 -0800 |
| Subject: f2fs: handle unallocated section and zone on pinned/atgc |
| |
| 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 --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)) |
| |
| -- |
| 2.30.1 |
| |
