From: Christoph Hellwig <hch@lst.de>
To: Keith Busch <kbusch@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
Chandan Babu R <chandanbabu@kernel.org>,
linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
linux-xfs@vger.kernel.org
Subject: Re: [PATCH 1/5] block: move discard checks into the ioctl handler
Date: Tue, 12 Mar 2024 23:31:31 +0100 [thread overview]
Message-ID: <20240312223131.GA8115@lst.de> (raw)
In-Reply-To: <ZfDTZpuumZSn6oPp@kbusch-mbp.mynextlight.net>
On Tue, Mar 12, 2024 at 04:12:54PM -0600, Keith Busch wrote:
> > + if (!nr_sects)
> > return -EINVAL;
> > + if ((sector | nr_sects) & bs_mask)
> > return -EINVAL;
> > -
> > if (start + len > bdev_nr_bytes(bdev))
> > return -EINVAL;
>
> Maybe you want to shift lower bytes out of consideration, but it is
> different, right? For example, if I call this ioctl with start=5 and
> len=555, it would return EINVAL, but your change would let it succeed
> the same as if start=0, len=512.
We did the same before, just down in __blkdev_issue_discard instead of
in the ioctl handler.
next prev parent reply other threads:[~2024-03-12 22:31 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-12 14:45 RFCv2: fix fatal signal handling in __blkdev_issue_discard Christoph Hellwig
2024-03-12 14:45 ` [PATCH 1/5] block: move discard checks into the ioctl handler Christoph Hellwig
2024-03-12 22:12 ` Keith Busch
2024-03-12 22:31 ` Christoph Hellwig [this message]
2024-03-13 1:22 ` Keith Busch
2024-03-13 15:40 ` Keith Busch
2024-03-13 20:06 ` Christoph Hellwig
2024-03-13 20:08 ` Jens Axboe
2024-03-12 14:45 ` [PATCH 2/5] block: add a bio_chain_and_submit helper Christoph Hellwig
2024-03-12 14:51 ` Keith Busch
2024-03-12 21:06 ` Christoph Hellwig
2024-03-12 14:45 ` [PATCH 3/5] block: add a blk_alloc_discard_bio helper Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2024-03-12 14:48 RFCv2: fix fatal signal handling in __blkdev_issue_discard Christoph Hellwig
2024-03-12 14:48 ` [PATCH 1/5] block: move discard checks into the ioctl handler Christoph Hellwig
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