linux-ext4 - Re: [PATCH v2 05/23] fsverity: make fsverity_verify

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Message-ID: <ZC2X5YlHMxzZQzhx@infradead.org>
Date:   Wed, 5 Apr 2023 08:46:45 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Andrey Albershteyn <aalbersh@...hat.com>
Cc:     Christoph Hellwig <hch@...radead.org>, djwong@...nel.org,
        dchinner@...hat.com, ebiggers@...nel.org,
        linux-xfs@...r.kernel.org, fsverity@...ts.linux.dev,
        rpeterso@...hat.com, agruenba@...hat.com, xiang@...nel.org,
        chao@...nel.org, damien.lemoal@...nsource.wdc.com, jth@...nel.org,
        linux-erofs@...ts.ozlabs.org, linux-btrfs@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        cluster-devel@...hat.com
Subject: Re: [PATCH v2 05/23] fsverity: make fsverity_verify_folio() accept
 folio's offset and size

On Wed, Apr 05, 2023 at 12:36:42PM +0200, Andrey Albershteyn wrote:
> Hi Christoph,
> 
> On Tue, Apr 04, 2023 at 08:30:36AM -0700, Christoph Hellwig wrote:
> > On Tue, Apr 04, 2023 at 04:53:01PM +0200, Andrey Albershteyn wrote:
> > > Not the whole folio always need to be verified by fs-verity (e.g.
> > > with 1k blocks). Use passed folio's offset and size.
> > 
> > Why can't those callers just call fsverity_verify_blocks directly?
> > 
> 
> They can. Calling _verify_folio with explicit offset; size appeared
> more clear to me. But I'm ok with dropping this patch to have full
> folio verify function.

Well, there is no point in a wrapper if it has the exact same signature
and functionality as the functionality being wrapped.

That being said, right now fsverity_verify_folio, so it might make sense
to either rename it, or rename fsverity_verify_blocks to
fsverity_verify_folio.  But that's really a question for Eric.