From: David Howells <dhowells@redhat.com>
To: Hou Tao <houtao@huaweicloud.com>
Cc: dhowells@redhat.com, linux-cachefs@redhat.com,
Jeff Layton <jlayton@kernel.org>,
linux-erofs@lists.ozlabs.org, linux-kernel@vger.kernel.org,
Jingbo Xu <jefflexu@linux.alibaba.com>,
houtao1@huawei.com
Subject: Re: [PATCH v2 1/2] fscache: Use wait_on_bit() to wait for the freeing of relinquished volume
Date: Wed, 11 Jan 2023 16:06:10 +0000 [thread overview]
Message-ID: <2431838.1673453170@warthog.procyon.org.uk> (raw)
In-Reply-To: <20221226103309.953112-2-houtao@huaweicloud.com>
Hou Tao <houtao@huaweicloud.com> wrote:
> clear_bit(FSCACHE_VOLUME_ACQUIRE_PENDING, &cursor->flags);
> + /*
> + * Paired with barrier in wait_on_bit(). Check
> + * wake_up_bit() and waitqueue_active() for details.
> + */
> + smp_mb__after_atomic();
> wake_up_bit(&cursor->flags, FSCACHE_VOLUME_ACQUIRE_PENDING);
What two values are you applying a partial ordering to?
David
next prev parent reply other threads:[~2023-01-11 16:07 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-26 10:33 [PATCH v2 0/2] Fixes for fscache volume operations Hou Tao
2022-12-26 10:33 ` [PATCH v2 1/2] fscache: Use wait_on_bit() to wait for the freeing of relinquished volume Hou Tao
2023-01-12 3:47 ` Jingbo Xu
2023-01-12 6:14 ` Hou Tao
2022-12-26 10:33 ` [PATCH v2 2/2] fscache: Add the missing smp_mb__after_atomic() before wake_up_bit() Hou Tao
2023-01-12 4:34 ` Jingbo Xu
2023-01-12 6:17 ` Hou Tao
2023-01-11 4:03 ` [PATCH v2 0/2] Fixes for fscache volume operations Hou Tao
2023-01-11 16:06 ` David Howells [this message]
2023-01-12 1:05 ` [PATCH v2 1/2] fscache: Use wait_on_bit() to wait for the freeing of relinquished volume Hou Tao
2023-01-12 3:58 ` Jingbo Xu
2023-01-12 6:12 ` Hou Tao
2023-01-11 16:09 ` [PATCH v2 2/2] fscache: Add the missing smp_mb__after_atomic() before wake_up_bit() David Howells
2023-01-12 1:07 ` Hou Tao
2023-01-11 16:24 ` David Howells
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