f2fs: fix start segno of large section

get_ckpt_valid_blocks() checks valid ckpt blocks in current section.
It counts all vblocks from the first to the last segment in the
large section. However, START_SEGNO() is used to get the first segno
in an SIT block. This patch fixes that to get the correct start segno.

Fixes: 61461fc921b7 ("f2fs: fix to avoid touching checkpointed data in get_victim()")
Signed-off-by: Sheng Yong <shengyong@oppo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index e1c0f418aa11f6b2495c5cd24d409f1434560ea4..bfc01a521cb98e73abee83988736795ada1a2067 100644 (file)
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -347,7 +347,8 @@ static inline unsigned int get_ckpt_valid_blocks(struct f2fs_sb_info *sbi,
                                unsigned int segno, bool use_section)
 {
        if (use_section && __is_large_section(sbi)) {
-               unsigned int start_segno = START_SEGNO(segno);
+               unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
+               unsigned int start_segno = GET_SEG_FROM_SEC(sbi, secno);
                unsigned int blocks = 0;
                int i;