[PATCH 6.6 534/638] f2fs: check number of blocks in a current section

Sasha Levin
2024-03-24T23:10:06Z

From: Jaegeuk Kim <jaegeuk@kernel.org>

[ Upstream commit 7af2df0f67a1469762e59be3726a803882d83f6f ]

In cfd66bb715fd ("f2fs: fix deadloop in foreground GC"), we needed to check
the number of blocks in a section instead of the segment.

Fixes: cfd66bb715fd ("f2fs: fix deadloop in foreground GC")
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/f2fs/segment.h | 17 ++++++++---------
1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 2ca8fb5d0dc4d..20580ebd24138 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -573,23 +573,22 @@ static inline bool has_curseg_enough_space(struct f2fs_sb_info *sbi,
unsigned int node_blocks, unsigned int dent_blocks)
{

- unsigned int segno, left_blocks;
+ unsigned segno, left_blocks;
int i;

- /* check current node segment */
+ /* check current node sections in the worst case. */
for (i = CURSEG_HOT_NODE; i <= CURSEG_COLD_NODE; i++) {
segno = CURSEG_I(sbi, i)->segno;
- left_blocks = f2fs_usable_blks_in_seg(sbi, segno) -
- get_seg_entry(sbi, segno)->ckpt_valid_blocks;
-
+ left_blocks = CAP_BLKS_PER_SEC(sbi) -
+ get_ckpt_valid_blocks(sbi, segno, true);
if (node_blocks > left_blocks)
return false;
}

- /* check current data segment */
+ /* check current data section for dentry blocks. */
segno = CURSEG_I(sbi, CURSEG_HOT_DATA)->segno;
- left_blocks = f2fs_usable_blks_in_seg(sbi, segno) -
- get_seg_entry(sbi, segno)->ckpt_valid_blocks;
+ left_blocks = CAP_BLKS_PER_SEC(sbi) -
+ get_ckpt_valid_blocks(sbi, segno, true);
if (dent_blocks > left_blocks)
return false;
return true;
@@ -638,7 +637,7 @@ static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi,

if (free_secs > upper_secs)
return false;
- else if (free_secs <= lower_secs)
+ if (free_secs <= lower_secs)
return true;
return !curseg_space;
}
--
2.43.0