Commit 3831bf00 authored by Johannes Thumshirn's avatar Johannes Thumshirn Committed by David Sterba
Browse files

btrfs: add sha256 to checksumming algorithm 



Add sha256 to the list of possible checksumming algorithms used by BTRFS.

Signed-off-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 3951e7f0

fs/btrfs/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ config BTRFS_FS 
	select CRYPTO_CRC32C

	select LIBCRC32C

	select CRYPTO_XXHASH

	select CRYPTO_SHA256

	select ZLIB_INFLATE

	select ZLIB_DEFLATE

	select LZO_COMPRESS

fs/btrfs/ctree.c

+1 −0
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ static const struct btrfs_csums { 
} btrfs_csums[] = {

	[BTRFS_CSUM_TYPE_CRC32] = { .size = 4, .name = "crc32c" },

	[BTRFS_CSUM_TYPE_XXHASH] = { .size = 8, .name = "xxhash64" },

	[BTRFS_CSUM_TYPE_SHA256] = { .size = 32, .name = "sha256" },

};



int btrfs_super_csum_size(const struct btrfs_super_block *s)

fs/btrfs/disk-io.c

+1 −0
Original line number Diff line number Diff line
@@ -353,6 +353,7 @@ static bool btrfs_supported_super_csum(u16 csum_type) 
	switch (csum_type) {

	case BTRFS_CSUM_TYPE_CRC32:

	case BTRFS_CSUM_TYPE_XXHASH:

	case BTRFS_CSUM_TYPE_SHA256:

		return true;

	default:

		return false;

fs/btrfs/super.c

+1 −0
Original line number Diff line number Diff line
@@ -2463,3 +2463,4 @@ module_exit(exit_btrfs_fs) 
MODULE_LICENSE("GPL");

MODULE_SOFTDEP("pre: crc32c");

MODULE_SOFTDEP("pre: xxhash64");

MODULE_SOFTDEP("pre: sha256");

include/uapi/linux/btrfs_tree.h

+1 −0
Original line number Diff line number Diff line
@@ -303,6 +303,7 @@ 
enum btrfs_csum_type {

	BTRFS_CSUM_TYPE_CRC32	= 0,

	BTRFS_CSUM_TYPE_XXHASH	= 1,

	BTRFS_CSUM_TYPE_SHA256	= 2,

};



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