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btrfs: add sha256 to checksumming algorithm

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

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Johannes Thumshirn 2019-10-07 11:11:02 +02:00 committed by David Sterba
parent 3951e7f050
commit 3831bf0094
5 changed files with 5 additions and 0 deletions
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1
fs/btrfs/Kconfig
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@ -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

1
fs/btrfs/ctree.c
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@ -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)

1
fs/btrfs/disk-io.c
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@ -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;

1
fs/btrfs/super.c
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@ -2463,3 +2463,4 @@ module_exit(exit_btrfs_fs)
MODULE_LICENSE("GPL");
MODULE_SOFTDEP("pre: crc32c");
MODULE_SOFTDEP("pre: xxhash64");
MODULE_SOFTDEP("pre: sha256");

1
include/uapi/linux/btrfs_tree.h
View File

@ -303,6 +303,7 @@
enum btrfs_csum_type {
BTRFS_CSUM_TYPE_CRC32 = 0,
BTRFS_CSUM_TYPE_XXHASH = 1,
BTRFS_CSUM_TYPE_SHA256 = 2,
};
/*