From: Eric Blake <eblake@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org
Cc: kwolf@redhat.com, famz@redhat.com, qemu-block@nongnu.org,
mreitz@redhat.com
Subject: Re: [Qemu-devel] [PATCH 02/11] coroutine-lock: add qemu_co_rwlock_downgrade and qemu_co_rwlock_upgrade
Date: Wed, 31 May 2017 15:50:04 -0500 [thread overview]
Message-ID: <9767a88f-3123-006b-11b4-fceaf79e6b0b@redhat.com> (raw)
In-Reply-To: <20170531094330.1808-3-pbonzini@redhat.com>
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On 05/31/2017 04:43 AM, Paolo Bonzini wrote:
> These functions are more efficient in the presence of contention.
> qemu_co_rwlock_downgrade also guarantees not to block, which may
> be useful in some algorithms too.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> include/qemu/coroutine.h | 19 +++++++++++++++++++
> util/qemu-coroutine-lock.c | 35 +++++++++++++++++++++++++++++++++++
> 2 files changed, 54 insertions(+)
>
Reviewed-by: Eric Blake <eblake@redhat.com>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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next prev parent reply other threads:[~2017-05-31 20:50 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-31 9:43 [Qemu-devel] [RFC PATCH 00/11] Block layer thread-safety, part 2 Paolo Bonzini
2017-05-31 9:43 ` [Qemu-devel] [PATCH 01/11] qcow2: call CoQueue APIs under CoMutex Paolo Bonzini
2017-05-31 15:18 ` Eric Blake
2017-05-31 9:43 ` [Qemu-devel] [PATCH 02/11] coroutine-lock: add qemu_co_rwlock_downgrade and qemu_co_rwlock_upgrade Paolo Bonzini
2017-05-31 20:50 ` Eric Blake [this message]
2017-05-31 9:43 ` [Qemu-devel] [PATCH 03/11] vdi: make it thread-safe Paolo Bonzini
2017-05-31 20:55 ` Eric Blake
2017-05-31 9:43 ` [Qemu-devel] [PATCH 04/11] vpc: " Paolo Bonzini
2017-05-31 20:58 ` Eric Blake
2017-05-31 9:43 ` [Qemu-devel] [PATCH 05/11] vvfat: " Paolo Bonzini
2017-05-31 21:09 ` Eric Blake
2017-05-31 9:43 ` [Qemu-devel] [PATCH 06/11] nbd: " Paolo Bonzini
2017-05-31 21:20 ` Eric Blake
2017-05-31 9:43 ` [Qemu-devel] [PATCH 07/11] qed: move tail of qed_aio_write_main to qed_aio_write_{cow, alloc} Paolo Bonzini
2017-05-31 9:43 ` [Qemu-devel] [PATCH 08/11] block: invoke .bdrv_drain callback in coroutine context and from AioContext Paolo Bonzini
2017-06-08 12:46 ` Stefan Hajnoczi
2017-06-08 12:50 ` Paolo Bonzini
2017-05-31 9:43 ` [Qemu-devel] [PATCH 09/11] qed: protect table cache with CoMutex Paolo Bonzini
2017-05-31 9:43 ` [Qemu-devel] [PATCH 10/11] sheepdog: add queue_lock Paolo Bonzini
2017-05-31 9:43 ` [Qemu-devel] [PATCH 11/11] ssh: support I/O from any AioContext Paolo Bonzini
2017-06-08 12:52 ` [Qemu-devel] [RFC PATCH 00/11] Block layer thread-safety, part 2 Stefan Hajnoczi
2017-06-08 12:54 ` Paolo Bonzini
2017-06-29 13:27 [Qemu-devel] [PATCH v2 " Paolo Bonzini
2017-06-29 13:27 ` [Qemu-devel] [PATCH 02/11] coroutine-lock: add qemu_co_rwlock_downgrade and qemu_co_rwlock_upgrade Paolo Bonzini
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