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From: David Sterba <dsterba@suse.cz>
To: Johannes Thumshirn <jthumshirn@suse.de>
Cc: David Sterba <dsterba@suse.com>,
	Linux BTRFS Mailinglist <linux-btrfs@vger.kernel.org>
Subject: Re: [PATCH v4 01/12] btrfs-progs: don't blindly assume crc32c in csum_tree_block_size()
Date: Tue, 24 Sep 2019 15:06:44 +0200	[thread overview]
Message-ID: <20190924130644.GQ2751@twin.jikos.cz> (raw)
In-Reply-To: <20190903150046.14926-2-jthumshirn@suse.de>

On Tue, Sep 03, 2019 at 05:00:35PM +0200, Johannes Thumshirn wrote:
> The callers of csum_tree_block_size() blindly assume we're only having
> crc32c as a possible checksum and thus pass in
> btrfs_csum_sizes[BTRFS_CSUM_TYPE_CRC32] for the size argument of
> csum_tree_block_size().
> 
> Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
> Reviewed-by: Nikolay Borisov <nborisov@suse.com>
> ---
>  mkfs/common.c | 14 +++++++-------
>  mkfs/common.h |  2 ++
>  2 files changed, 9 insertions(+), 7 deletions(-)
> 
> diff --git a/mkfs/common.c b/mkfs/common.c
> index caca5e707233..b6e549b19272 100644
> --- a/mkfs/common.c
> +++ b/mkfs/common.c
> @@ -101,7 +101,7 @@ static int btrfs_create_tree_root(int fd, struct btrfs_mkfs_config *cfg,
>  	}
>  
>  	/* generate checksum */
> -	csum_tree_block_size(buf, btrfs_csum_sizes[BTRFS_CSUM_TYPE_CRC32], 0);
> +	csum_tree_block_size(buf, btrfs_csum_sizes[cfg->csum_type], 0);

I don't see where cfg->csum_type is initialized. The tests pass so
there's probably some implicit initialization to 0 that makes it work.

  parent reply	other threads:[~2019-09-24 13:06 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-03 15:00 [PATCH v4 00/12] btrfs-progs: support xxhash64 checksums Johannes Thumshirn
2019-09-03 15:00 ` [PATCH v4 01/12] btrfs-progs: don't blindly assume crc32c in csum_tree_block_size() Johannes Thumshirn
2019-09-24 12:56   ` David Sterba
2019-09-24 13:06   ` David Sterba [this message]
2019-09-03 15:00 ` [PATCH v4 02/12] btrfs-progs: cache csum_type in recover_control Johannes Thumshirn
2019-09-03 15:00 ` [PATCH v4 03/12] btrfs-progs: add checksum type to checksumming functions Johannes Thumshirn
2019-09-03 15:00 ` [PATCH v4 04/12] btrfs-progs: don't assume checksums are always 4 bytes Johannes Thumshirn
2019-09-03 15:00 ` [PATCH v4 05/12] btrfs-progs: pass checksum type to btrfs_csum_data()/btrfs_csum_final() Johannes Thumshirn
2019-09-03 15:00 ` [PATCH v4 06/12] btrfs-progs: simplify update_block_csum() in btrfs-sb-mod.c Johannes Thumshirn
2019-09-03 15:00 ` [PATCH v4 07/12] btrfs-progs: update checksumming api Johannes Thumshirn
2019-09-03 15:00 ` [PATCH v4 08/12] btrfs-progs: add option for checksum type to mkfs Johannes Thumshirn
2019-09-24 14:26   ` David Sterba
2019-09-24 15:34     ` Adam Borowski
2019-09-24 15:52       ` David Sterba
2019-09-03 15:00 ` [PATCH v4 09/12] btrfs-progs: add xxhash sources Johannes Thumshirn
2019-09-03 15:00 ` [PATCH v4 10/12] btrfs-progs: add xxhash64 as checksum algorithm Johannes Thumshirn
2019-09-04  8:31   ` Nikolay Borisov
2019-09-24 14:23   ` David Sterba
2019-09-03 15:00 ` [PATCH v4 11/12] btrfs-progs: move crc32c implementation to crypto/ Johannes Thumshirn
2019-09-04  8:32   ` Nikolay Borisov
2019-09-03 15:00 ` [PATCH v4 12/12] btrfs-progs: add test-case for mkfs with xxhash64 Johannes Thumshirn
2019-09-24 14:26   ` David Sterba
2019-09-24 14:34 ` [PATCH v4 00/12] btrfs-progs: support xxhash64 checksums David Sterba

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