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btrfs: print checksum type and implementation at mount time
Per user request, print the checksum type and implementation at mount time among the messages. The checksum is user configurable and the actual crypto implementation is useful to see for performance reasons. The same information is also available after mount in /sys/fs/FSID/checksum file. Example: [25.323662] BTRFS info (device vdb): using sha256 (sha256-generic) checksum algorithm Link: https://github.com/kdave/btrfs-progs/issues/483 Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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@ -2425,6 +2425,9 @@ static int btrfs_init_csum_hash(struct btrfs_fs_info *fs_info, u16 csum_type)
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fs_info->csum_shash = csum_shash;
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btrfs_info(fs_info, "using %s (%s) checksum algorithm",
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btrfs_super_csum_name(csum_type),
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crypto_shash_driver_name(csum_shash));
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return 0;
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}
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