jbd2: checksum journal superblock

[firefly-linux-kernel-4.4.55.git] / include / linux / jbd2.h

diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 71e77dddebf11225246474cfa15fb60770afee7d..a9632bc55d97e61dfedf03da8ac5316008e7b39a 100644 (file)
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -969,6 +969,9 @@ struct journal_s
 
        /* Reference to checksum algorithm driver via cryptoapi */
        struct crypto_shash *j_chksum_driver;
+
+       /* Precomputed journal UUID checksum for seeding other checksums */
+       __u32 j_csum_seed;
 };
 
 /*