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btrfs: add sha256 to checksumming algorithm
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>
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5 changed files with 5 additions and 0 deletions
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@ -6,6 +6,7 @@ config BTRFS_FS
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select CRYPTO_CRC32C
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select LIBCRC32C
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select CRYPTO_XXHASH
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select CRYPTO_SHA256
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select ZLIB_INFLATE
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select ZLIB_DEFLATE
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select LZO_COMPRESS
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@ -35,6 +35,7 @@ static const struct btrfs_csums {
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} btrfs_csums[] = {
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[BTRFS_CSUM_TYPE_CRC32] = { .size = 4, .name = "crc32c" },
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[BTRFS_CSUM_TYPE_XXHASH] = { .size = 8, .name = "xxhash64" },
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[BTRFS_CSUM_TYPE_SHA256] = { .size = 32, .name = "sha256" },
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};
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int btrfs_super_csum_size(const struct btrfs_super_block *s)
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@ -353,6 +353,7 @@ static bool btrfs_supported_super_csum(u16 csum_type)
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switch (csum_type) {
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case BTRFS_CSUM_TYPE_CRC32:
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case BTRFS_CSUM_TYPE_XXHASH:
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case BTRFS_CSUM_TYPE_SHA256:
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return true;
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default:
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return false;
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@ -2463,3 +2463,4 @@ module_exit(exit_btrfs_fs)
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MODULE_LICENSE("GPL");
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MODULE_SOFTDEP("pre: crc32c");
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MODULE_SOFTDEP("pre: xxhash64");
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MODULE_SOFTDEP("pre: sha256");
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@ -303,6 +303,7 @@
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enum btrfs_csum_type {
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BTRFS_CSUM_TYPE_CRC32 = 0,
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BTRFS_CSUM_TYPE_XXHASH = 1,
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BTRFS_CSUM_TYPE_SHA256 = 2,
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};
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/*
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