From: Christoph Hellwig <hch@lst.de>
To: Keith Busch <kbusch@meta.com>
Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
dm-devel@lists.linux.dev, hch@lst.de, axboe@kernel.dk,
brauner@kernel.org, djwong@kernel.org, viro@zeniv.linux.org.uk,
Keith Busch <kbusch@kernel.org>
Subject: Re: [PATCHv2 5/6] zloop: set dma_alignment from the backing files for direct I/O
Date: Tue, 23 Jun 2026 17:06:47 +0200 [thread overview]
Message-ID: <20260623150647.GE13628@lst.de> (raw)
In-Reply-To: <20260622174241.2299563-6-kbusch@meta.com>
On Mon, Jun 22, 2026 at 10:42:40AM -0700, Keith Busch wrote:
> {
> struct block_device *sb_bdev = zone->file->f_mapping->host->i_sb->s_bdev;
> struct kstat st;
> + bool have_dioalign = !vfs_getattr(&zone->file->f_path, &st,
> + STATX_DIOALIGN, 0) &&
> + (st.result_mask & STATX_DIOALIGN);
This is getting a bit crazy for an assignment :)
Maybe refactor this along the lines of the loop.c code?
> + /* Direct I/O hands the request's pages to the backing files unchanged. */
Overly long line.
next prev parent reply other threads:[~2026-06-23 15:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-22 17:42 [PATCHv2 0/6] direct-io: validate user space vectors during extraction Keith Busch
2026-06-22 17:42 ` [PATCHv2 1/6] block: introduce bio_endio_errno helper Keith Busch
2026-06-23 14:54 ` Christoph Hellwig
2026-06-23 15:05 ` Keith Busch
2026-06-23 15:07 ` Christoph Hellwig
2026-06-22 17:42 ` [PATCHv2 2/6] block: report the actual status Keith Busch
2026-06-23 14:55 ` Christoph Hellwig
2026-06-23 14:59 ` Keith Busch
2026-06-22 17:42 ` [PATCHv2 3/6] block: fix dio leak on metadata mapping error Keith Busch
2026-06-23 15:01 ` Christoph Hellwig
2026-06-22 17:42 ` [PATCHv2 4/6] loop: set dma_alignment from the backing file for direct I/O Keith Busch
2026-06-23 15:04 ` Christoph Hellwig
2026-06-22 17:42 ` [PATCHv2 5/6] zloop: set dma_alignment from the backing files " Keith Busch
2026-06-23 15:06 ` Christoph Hellwig [this message]
2026-06-22 17:42 ` [PATCHv2 6/6] block: validate user space vectors during extraction Keith Busch
2026-06-23 15:10 ` Christoph Hellwig
2026-06-23 16:17 ` Keith Busch
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