Btrfs: switch to crc32c instead of sha256
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 92a6078..d8caeba 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -30,6 +30,8 @@
/* 32 bytes in various csum fields */
#define BTRFS_CSUM_SIZE 32
+/* four bytes for CRC32 */
+#define BTRFS_CRC32_SIZE 4
/*
* the key defines the order in the tree, and so it also defines (optimal)
@@ -235,7 +237,7 @@
} __attribute__ ((__packed__));
struct btrfs_csum_item {
- u8 csum[BTRFS_CSUM_SIZE];
+ u8 csum;
} __attribute__ ((__packed__));
struct btrfs_device_item {