From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH] iomap: iomap_bmap should check iomap_apply return value
Date: Thu, 7 Nov 2019 07:36:17 -0800 [thread overview]
Message-ID: <20191107153617.GB6219@magnolia> (raw)
In-Reply-To: <20191107083050.GB9802@lst.de>
On Thu, Nov 07, 2019 at 09:30:50AM +0100, Christoph Hellwig wrote:
> On Wed, Nov 06, 2019 at 06:59:27PM -0800, Darrick J. Wong wrote:
> > From: Darrick J. Wong <darrick.wong@oracle.com>
> >
> > Check the return value of iomap_apply and return 0 (i.e. error) if it
> > didn't succeed.
>
> And how could we set the bno value if we didn't succeed?
The iomap_bmap caller supplies an ->iomap_end that returns an error.
Granted there's only one caller and it doesn't, so we could dump this
patch and just tell Coverity to shut up, but it's odd that this is the
one place where we ignore the return value.
OTOH it's bmap which has been broken for ages; the more insane behavior
seen in the wild, the better to scare away users. :P
--D
next prev parent reply other threads:[~2019-11-07 15:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-07 2:59 [PATCH] iomap: iomap_bmap should check iomap_apply return value Darrick J. Wong
2019-11-07 8:30 ` Christoph Hellwig
2019-11-07 15:36 ` Darrick J. Wong [this message]
2019-11-08 5:51 ` Christoph Hellwig
2019-11-08 16:11 ` Darrick J. Wong
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