From: Nikolay Borisov <nborisov@suse.com>
To: Qu Wenruo <wqu@suse.com>, linux-btrfs@vger.kernel.org
Subject: Re: [PATCH 1/2] btrfs: remove the phy_offset parameter for btrfs_validate_metadata_buffer()
Date: Mon, 9 Nov 2020 14:21:04 +0200 [thread overview]
Message-ID: <4e2932ce-d3c5-1c6b-0577-b8ebe32417ce@suse.com> (raw)
In-Reply-To: <20201109115410.605880-2-wqu@suse.com>
On 9.11.20 г. 13:54 ч., Qu Wenruo wrote:
> Parameter @phy_offset is the offset against the io_bio->logical (which
> is the disk bytenr).
>
> @phy_offset is mostly for data io to lookup the csum in btrfs_io_bio.
>
> But for metadata, it's completely useless as metadata stores their own
> csum in its btrfs_header.
>
> Remove this useless parameter from btrfs_validate_metadata_buffer().
>
> Just an extra note for parameters @start and @end, they are not utilized
> at all for current sectorsize == PAGE_SIZE, as we can grab eb directly
> from page.
>
> But those two parameters are very important for later subpage support,
> thus @start/@len are not touched here.
>
> Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
next prev parent reply other threads:[~2020-11-09 12:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-09 11:54 [PATCH 0/2] btrfs: paramater refactors for data and metadata endio call backs Qu Wenruo
2020-11-09 11:54 ` [PATCH 1/2] btrfs: remove the phy_offset parameter for btrfs_validate_metadata_buffer() Qu Wenruo
2020-11-09 12:21 ` Nikolay Borisov [this message]
2020-11-09 11:54 ` [PATCH 2/2] btrfs: use more straightforward disk_bytenr to replace icsum for check_data_csum() Qu Wenruo
2020-11-09 12:19 ` Nikolay Borisov
2020-11-09 12:34 ` Qu Wenruo
2020-11-09 11:57 ` [PATCH 0/2] btrfs: paramater refactors for data and metadata endio call backs Qu Wenruo
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