From: Christoph Hellwig <hch@infradead.org>
To: Keith Busch <kbusch@fb.com>
Cc: linux-block@vger.kernel.org, axboe@kernel.dk,
Kernel Team <kernel-team@fb.com>, Keith Busch <kbusch@kernel.org>
Subject: Re: [PATCH 1/3] block: export dma_alignment attribute
Date: Sun, 15 May 2022 23:52:46 -0700 [thread overview]
Message-ID: <YoH0vuUA4KdcpEAz@infradead.org> (raw)
In-Reply-To: <20220513161339.1580042-1-kbusch@fb.com>
I'm not against the sysfs file, but for applications this is a
horrible interface. We really need something that works on the fd.
The XFS_IOC_DIOINFO ioctl from xfs is one, although ugly, option.
The other is to export the alignment requirements through statx.
We had that whole discussion with the inline crypto direct I/O support,
and we really need to tackle it rather sooner than later.
next prev parent reply other threads:[~2022-05-16 6:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-13 16:13 [PATCH 1/3] block: export dma_alignment attribute Keith Busch
2022-05-13 16:13 ` [PATCH 2/3] block: relax direct io memory alignment Keith Busch
2022-05-13 16:13 ` [PATCH 3/3] block: ensure direct io is a block size Keith Busch
2022-05-14 2:26 ` Bart Van Assche
2022-05-16 10:13 ` Damien Le Moal
2022-05-16 14:01 ` Keith Busch
2022-05-16 6:52 ` Christoph Hellwig [this message]
2022-05-16 14:32 ` [PATCH 1/3] block: export dma_alignment attribute Keith Busch
2022-05-17 22:55 ` Keith Busch
2022-05-18 7:23 ` Christoph Hellwig
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