From: Christoph Hellwig <hch@infradead.org>
To: Qu Wenruo <wqu@suse.com>
Cc: linux-btrfs@vger.kernel.org, linux-block@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org
Subject: Re: [PATCH v3 1/4] block: revert the iov_iter after a short copy in bio_iov_iter_bounce_write()
Date: Mon, 15 Jun 2026 08:03:37 -0700 [thread overview]
Message-ID: <ajAUSUEZEcEviOb4@infradead.org> (raw)
In-Reply-To: <ed47077f3d4336b64a177486e74b4f6a460b2392.1781253428.git.wqu@suse.com>
On Fri, Jun 12, 2026 at 07:21:12PM +0930, Qu Wenruo wrote:
> + copied = copy_from_iter(folio_address(folio), this_len, iter);
> + if (copied < this_len) {
> + iov_iter_revert(iter, bio->bi_iter.bi_size - this_len + copied);
Please keep the line below 80 characters. And maybe add the explanation
for the amount reverted here based on what you wrote above in the commit
log.
next prev parent reply other threads:[~2026-06-15 15:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-12 9:51 [PATCH v3 0/4] btrfs: use IOMAP_DIO_BOUNCE flag instead of falling back to buffered IO Qu Wenruo
2026-06-12 9:51 ` [PATCH v3 1/4] block: revert the iov_iter after a short copy in bio_iov_iter_bounce_write() Qu Wenruo
2026-06-15 15:03 ` Christoph Hellwig [this message]
2026-06-12 9:51 ` [PATCH v3 2/4] block: respect iov_iter::nofault flag " Qu Wenruo
2026-06-15 15:05 ` Christoph Hellwig
2026-06-12 9:51 ` [PATCH v3 3/4] iomap: reject NOWAIT and BOUNCE direct IOs Qu Wenruo
2026-06-15 15:05 ` Christoph Hellwig
2026-06-12 9:51 ` [PATCH v3 4/4] btrfs: use IOMAP_DIO_BOUNCE flag instead of falling back to buffered IO Qu Wenruo
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