This patch add a mismatch check between segment and section in
sanity_check_raw_super.
Signed-off-by: Yunlei He <heyun...@huawei.com>
---
fs/f2fs/super.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index c3070c1..b51a690 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1036,6 +1036,17 @@ static int sanity_check_raw_super(struct super_block *sb,
return 1;
}
+ /* check seg # corresponding to sec # */
+ if (le32_to_cpu(raw_super->segment_count)
+ * le32_to_cpu(raw_super->segs_per_sec)
+ != le32_to_cpu(raw_super->section_count)) {
+ f2fs_msg(sb, KERN_INFO,
+ "Mismatch seg num (%u) and sec num (%u) \n",
+ le32_to_cpu(raw_super->segment_count),
+ le32_to_cpu(raw_super->section_count));
+ return 1;
+ }
+
/* Currently, support 512/1024/2048/4096 bytes sector size */
if (le32_to_cpu(raw_super->log_sectorsize) >
F2FS_MAX_LOG_SECTOR_SIZE ||
--
1.9.1
------------------------------------------------------------------------------
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