f2fs: support recording errors into superblock

This patch supports to record detail reason of FSCORRUPTED error into
f2fs_super_block.s_errors[].

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/verity.c b/fs/f2fs/verity.c
index 97ec60f..f0805e5 100644
--- a/fs/f2fs/verity.c
+++ b/fs/f2fs/verity.c
@@ -240,6 +240,8 @@ static int f2fs_get_verity_descriptor(struct inode *inode, void *buf,
 	if (pos + size < pos || pos + size > inode->i_sb->s_maxbytes ||
 	    pos < f2fs_verity_metadata_pos(inode) || size > INT_MAX) {
 		f2fs_warn(F2FS_I_SB(inode), "invalid verity xattr");
+		f2fs_handle_error(F2FS_I_SB(inode),
+				ERROR_CORRUPTED_VERITY_XATTR);
 		return -EFSCORRUPTED;
 	}
 	if (buf_size) {