From: Tal Zussman <tz2294@columbia.edu>
To: Jens Axboe <axboe@kernel.dk>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Christian Brauner <brauner@kernel.org>,
"Darrick J. Wong" <djwong@kernel.org>,
Carlos Maiolino <cem@kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>, Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@infradead.org>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH RFC v4 1/3] block: add BIO_COMPLETE_IN_TASK for task-context completion
Date: Wed, 8 Apr 2026 18:51:33 -0400 [thread overview]
Message-ID: <97b81868-6410-4c79-a242-679a9f04f073@columbia.edu> (raw)
In-Reply-To: <699933c1-c150-4e10-a5fc-6f128260d0c1@kernel.dk>
On 4/8/26 3:51 PM, Jens Axboe wrote:
> On 4/8/26 12: 48 PM, Tal Zussman wrote: > On 3/25/26 4: 14 PM, Jens Axboe wrote:
>>
>> Thanks! I'm going to give Dave's llist suggestion a shot on top of
>> this as it seems like it'll simplify this nicely. Looks like that'll
>> involve turning bio::bi_next into a union with a struct llist_node.
>
> Since these lists can get long, I'd keep an eye on llist reversal
> overhead there...
>
Going to send v5 shortly -- tested with and without the llist reversal and
it didn't seem to make much of a difference. This was on a single-disk VM
though, so any stress testing you could do would be very helpful.
Thanks,
Tal
next prev parent reply other threads:[~2026-04-08 22:51 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-25 18:42 [PATCH RFC v4 0/3] block: enable RWF_DONTCACHE for block devices Tal Zussman
2026-03-25 18:43 ` [PATCH RFC v4 1/3] block: add BIO_COMPLETE_IN_TASK for task-context completion Tal Zussman
2026-03-25 19:54 ` Matthew Wilcox
2026-03-25 20:14 ` Jens Axboe
2026-04-08 18:48 ` Tal Zussman
2026-04-08 19:51 ` Jens Axboe
2026-04-08 22:51 ` Tal Zussman [this message]
2026-04-08 23:36 ` Jens Axboe
2026-03-25 20:26 ` Dave Chinner
2026-03-25 20:39 ` Matthew Wilcox
2026-03-26 2:44 ` Dave Chinner
2026-04-08 18:50 ` Tal Zussman
2026-03-25 21:03 ` Bart Van Assche
2026-03-26 3:18 ` Dave Chinner
2026-03-27 6:01 ` Christoph Hellwig
2026-04-08 19:35 ` Tal Zussman
2026-03-25 18:43 ` [PATCH RFC v4 2/3] iomap: use BIO_COMPLETE_IN_TASK for dropbehind writeback Tal Zussman
2026-03-25 20:21 ` Matthew Wilcox
2026-03-27 6:03 ` Christoph Hellwig
2026-04-08 19:36 ` Tal Zussman
2026-04-08 19:44 ` Tal Zussman
2026-04-08 20:01 ` Matthew Wilcox
2026-04-08 20:10 ` Tal Zussman
2026-03-25 20:34 ` Dave Chinner
2026-03-27 6:08 ` Christoph Hellwig
2026-03-27 6:24 ` Gao Xiang
2026-03-27 6:27 ` Christoph Hellwig
2026-03-27 6:45 ` Gao Xiang
2026-03-25 18:43 ` [PATCH RFC v4 3/3] block: enable RWF_DONTCACHE for block devices Tal Zussman
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