1 files changed, 45 insertions, 3 deletions

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 70bd15cadb44..2cd0d126ef8f 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -251,8 +251,10 @@ retry:
 		}
 next:
 		/* we don't need to invalidate this in the sccessful status */
-		if (drop || recover)
+		if (drop || recover) {
 			ClearPageUptodate(page);
+			clear_cold_data(page);
+		}
 		set_page_private(page, 0);
 		ClearPagePrivate(page);
 		f2fs_put_page(page, 1);
@@ -2216,6 +2218,7 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
 	if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) {
 		f2fs_msg(sbi->sb, KERN_WARNING,
 			"Found FS corruption, run fsck to fix.");
+		err = -EFSCORRUPTED;
 		goto out;
 	}
 
@@ -3309,7 +3312,7 @@ static int build_sit_entries(struct f2fs_sb_info *sbi)
 					"Wrong journal entry on segno %u",
 					start);
 			set_sbi_flag(sbi, SBI_NEED_FSCK);
-			err = -EINVAL;
+			err = -EFSCORRUPTED;
 			break;
 		}
 
@@ -3350,7 +3353,7 @@ static int build_sit_entries(struct f2fs_sb_info *sbi)
 			"SIT is corrupted node# %u vs %u",
 			total_node_blocks, valid_node_count(sbi));
 		set_sbi_flag(sbi, SBI_NEED_FSCK);
-		err = -EINVAL;
+		err = -EFSCORRUPTED;
 	}
 
 	return err;
@@ -3439,6 +3442,41 @@ static int build_dirty_segmap(struct f2fs_sb_info *sbi)
 	return init_victim_secmap(sbi);
 }
 
+static int sanity_check_curseg(struct f2fs_sb_info *sbi)
+{
+	int i;
+
+	/*
+	 * In LFS/SSR curseg, .next_blkoff should point to an unused blkaddr;
+	 * In LFS curseg, all blkaddr after .next_blkoff should be unused.
+	 */
+	for (i = 0; i < NO_CHECK_TYPE; i++) {
+		struct curseg_info *curseg = CURSEG_I(sbi, i);
+		struct seg_entry *se = get_seg_entry(sbi, curseg->segno);
+		unsigned int blkofs = curseg->next_blkoff;
+
+		if (f2fs_test_bit(blkofs, se->cur_valid_map))
+			goto out;
+
+		if (curseg->alloc_type == SSR)
+			continue;
+
+		for (blkofs += 1; blkofs < sbi->blocks_per_seg; blkofs++) {
+			if (!f2fs_test_bit(blkofs, se->cur_valid_map))
+				continue;
+out:
+			f2fs_msg(sbi->sb, KERN_ERR,
+				"Current segment's next free block offset is "
+				"inconsistent with bitmap, logtype:%u, "
+				"segno:%u, type:%u, next_blkoff:%u, blkofs:%u",
+				i, curseg->segno, curseg->alloc_type,
+				curseg->next_blkoff, blkofs);
+			return -EFSCORRUPTED;
+		}
+	}
+	return 0;
+}
+
 /*
  * Update min, max modified time for cost-benefit GC algorithm
  */
@@ -3532,6 +3570,10 @@ int build_segment_manager(struct f2fs_sb_info *sbi)
 	if (err)
 		return err;
 
+	err = sanity_check_curseg(sbi);
+	if (err)
+		return err;
+
 	init_min_max_mtime(sbi);
 	return 0;
 }