From: Christoph Hellwig <hch@infradead.org>
To: Pavel Begunkov <asml.silence@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, io-uring@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [RFC for-next v2 1/4] bio: safeguard REQ_ALLOC_CACHE bio put
Date: Thu, 20 Oct 2022 01:26:39 -0700 [thread overview]
Message-ID: <Y1EGP30UotgnCc6a@infradead.org> (raw)
In-Reply-To: <558d78313476c4e9c233902efa0092644c3d420a.1666122465.git.asml.silence@gmail.com>
On Tue, Oct 18, 2022 at 08:50:55PM +0100, Pavel Begunkov wrote:
> bio_put() with REQ_ALLOC_CACHE assumes that it's executed not from
> an irq context. Let's add a warning if the invariant is not respected,
> especially since there is a couple of places removing REQ_POLLED by hand
> without also clearing REQ_ALLOC_CACHE.
Looks good:
Reviewed-by: Christoph Hellwig <hch@lst.de>
next prev parent reply other threads:[~2022-10-20 8:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-18 19:50 [RFC for-next v2 0/4] enable pcpu bio caching for IRQ I/O Pavel Begunkov
2022-10-18 19:50 ` [RFC for-next v2 1/4] bio: safeguard REQ_ALLOC_CACHE bio put Pavel Begunkov
2022-10-20 8:26 ` Christoph Hellwig [this message]
2022-10-18 19:50 ` [RFC for-next v2 2/4] bio: split pcpu cache part of bio_put into a helper Pavel Begunkov
2022-10-20 8:30 ` Christoph Hellwig
2022-10-18 19:50 ` [RFC for-next v2 3/4] block/bio: add pcpu caching for non-polling bio_put Pavel Begunkov
2022-10-20 8:31 ` Christoph Hellwig
2022-10-20 12:26 ` Pavel Begunkov
2022-10-18 19:50 ` [RFC for-next v2 4/4] io_uring/rw: enable bio caches for IRQ rw Pavel Begunkov
2022-10-20 8:32 ` [RFC for-next v2 0/4] enable pcpu bio caching for IRQ I/O Christoph Hellwig
2022-10-20 12:40 ` Pavel Begunkov
2022-10-20 12:53 ` Jens Axboe
2022-10-20 12:50 ` (subset) " Jens Axboe
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