From c1ca57dc5055975915761505935982803fb2517b Mon Sep 17 00:00:00 2001 From: Daeho Jeong Date: Mon, 26 Jan 2026 14:28:01 -0800 Subject: [PATCH] f2fs: fix incomplete block usage in compact SSA summaries commit 91b76f1059b60f453b51877f29f0e35693737383 upstream. In a previous commit, a bug was introduced where compact SSA summaries failed to utilize the entire block space in non-4KB block size configurations, leading to inefficient space management. This patch fixes the calculation logic to ensure that compact SSA summaries can fully occupy the block regardless of the block size. Reported-by: Chris Mason Fixes: e48e16f3e37f ("f2fs: support non-4KB block size without packed_ssa feature") Signed-off-by: Daeho Jeong Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim Cc: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- fs/f2fs/segment.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index f317abebdb92..90d0bac9d294 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2685,12 +2685,12 @@ int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) valid_sum_count += f2fs_curseg_valid_blocks(sbi, i); } - sum_in_page = (sbi->sum_blocksize - 2 * sbi->sum_journal_size - + sum_in_page = (sbi->blocksize - 2 * sbi->sum_journal_size - SUM_FOOTER_SIZE) / SUMMARY_SIZE; if (valid_sum_count <= sum_in_page) return 1; else if ((valid_sum_count - sum_in_page) <= - (sbi->sum_blocksize - SUM_FOOTER_SIZE) / SUMMARY_SIZE) + (sbi->blocksize - SUM_FOOTER_SIZE) / SUMMARY_SIZE) return 2; return 3; } @@ -4333,7 +4333,7 @@ static int read_compacted_summaries(struct f2fs_sb_info *sbi) s = (struct f2fs_summary *)(kaddr + offset); sum_entries(seg_i->sum_blk)[j] = *s; offset += SUMMARY_SIZE; - if (offset + SUMMARY_SIZE <= sbi->sum_blocksize - + if (offset + SUMMARY_SIZE <= sbi->blocksize - SUM_FOOTER_SIZE) continue; @@ -4506,7 +4506,7 @@ static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) *summary = sum_entries(seg_i->sum_blk)[j]; written_size += SUMMARY_SIZE; - if (written_size + SUMMARY_SIZE <= PAGE_SIZE - + if (written_size + SUMMARY_SIZE <= sbi->blocksize - SUM_FOOTER_SIZE) continue;