From: Pavel Begunkov <asml.silence@gmail.com>
To: Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org
Cc: Pavel Begunkov <asml.silence@gmail.com>
Subject: [PATCH for-6.1 0/2] iopoll bio pcpu cache fix
Date: Thu, 27 Oct 2022 23:14:20 +0100 [thread overview]
Message-ID: <cover.1666886282.git.asml.silence@gmail.com> (raw)
There are ways to deprive bioset mempool of requests using pcpu caches
and never return them back, which breaks forward progress guarantees bioset
tried to provide. Fix it.
Pavel Begunkov (2):
mempool: introduce mempool_is_saturated
bio: don't rob bios from starving bioset
block/bio.c | 2 ++
include/linux/mempool.h | 5 +++++
2 files changed, 7 insertions(+)
--
2.38.0
next reply other threads:[~2022-10-27 22:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-27 22:14 Pavel Begunkov [this message]
2022-10-27 22:14 ` [PATCH for-6.1 1/2] mempool: introduce mempool_is_saturated Pavel Begunkov
2022-10-27 22:14 ` [PATCH for-6.1 2/2] bio: don't rob bios from starving bioset Pavel Begunkov
2022-10-27 23:27 ` [PATCH for-6.1 0/2] iopoll bio pcpu cache fix Jens Axboe
2022-10-27 23:55 ` Jens Axboe
2022-10-28 0:13 ` Pavel Begunkov
2022-10-28 13:16 ` Pavel Begunkov
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