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From: Paolo Bonzini <pbonzini@redhat.com>
To: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>,
	Emanuele Giuseppe Esposito <eesposit@redhat.com>,
	qemu-block@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>, John Snow <jsnow@redhat.com>,
	qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@redhat.com>,
	Max Reitz <mreitz@redhat.com>
Subject: Re: [PATCH 5/6] co-shared-resource: protect with a mutex
Date: Tue, 11 May 2021 10:34:41 +0200	[thread overview]
Message-ID: <2cedc820-d14c-b7e6-5024-10357e0e1b36@redhat.com> (raw)
In-Reply-To: <57fd4d5f-4645-905f-998c-a120c042fdc7@virtuozzo.com>

On 10/05/21 13:40, Vladimir Sementsov-Ogievskiy wrote:
> 
>> co-shared-resource is currently not thread-safe, as also reported
>> in co-shared-resource.h. Add a QemuMutex because co_try_get_from_shres
>> can also be invoked from non-coroutine context.
> 
> But it doesn't. It's called only from co_get_from_shres(). So, better 
> make it a static function first.

It's a sensible interface though.  It lets you sleep or retry in your 
own way if you cannot get the resources, so (apart from the 
unlocked/locked confusion in the names) I like keeping it in the public API.

Paolo



  reply	other threads:[~2021-05-11  8:58 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-10  8:59 [PATCH 0/6] block-copy: make helper APIs thread safe Emanuele Giuseppe Esposito
2021-05-10  8:59 ` [PATCH 1/6] ratelimit: treat zero speed as unlimited Emanuele Giuseppe Esposito
2021-05-10 11:00   ` Vladimir Sementsov-Ogievskiy
2021-05-10  8:59 ` [PATCH 2/6] block-copy: let ratelimit handle a speed of 0 Emanuele Giuseppe Esposito
2021-05-10 11:06   ` Vladimir Sementsov-Ogievskiy
2021-05-10  8:59 ` [PATCH 3/6] blockjob: " Emanuele Giuseppe Esposito
2021-05-10 11:17   ` Vladimir Sementsov-Ogievskiy
2021-05-10  8:59 ` [PATCH 4/6] progressmeter: protect with a mutex Emanuele Giuseppe Esposito
2021-05-10 11:28   ` Vladimir Sementsov-Ogievskiy
2021-05-10 16:52     ` Emanuele Giuseppe Esposito
2021-05-10 17:17       ` Vladimir Sementsov-Ogievskiy
2021-05-10 17:57         ` Emanuele Giuseppe Esposito
2021-05-11 12:28     ` Paolo Bonzini
2021-05-12  7:09       ` Vladimir Sementsov-Ogievskiy
2021-05-12 15:53   ` Stefan Hajnoczi
2021-05-10  8:59 ` [PATCH 5/6] co-shared-resource: " Emanuele Giuseppe Esposito
2021-05-10 11:40   ` Vladimir Sementsov-Ogievskiy
2021-05-11  8:34     ` Paolo Bonzini [this message]
2021-05-12 15:44   ` Stefan Hajnoczi
2021-05-12 18:30     ` Paolo Bonzini
2021-05-14 14:10     ` Emanuele Giuseppe Esposito
2021-05-14 14:26       ` Vladimir Sementsov-Ogievskiy via
2021-05-14 14:32         ` Emanuele Giuseppe Esposito
2021-05-14 15:30           ` Vladimir Sementsov-Ogievskiy via
2021-05-14 17:28             ` Emanuele Giuseppe Esposito
2021-05-14 21:15               ` Vladimir Sementsov-Ogievskiy via
2021-05-14 21:53                 ` Emanuele Giuseppe Esposito
2021-05-15  7:11                   ` Vladimir Sementsov-Ogievskiy via
2021-05-14 17:55       ` Paolo Bonzini
2021-05-10  8:59 ` [PATCH 6/6] aiopool: " Emanuele Giuseppe Esposito
2021-05-10 11:56   ` Vladimir Sementsov-Ogievskiy
2021-05-11  8:34     ` Paolo Bonzini
2021-05-12 15:19   ` Stefan Hajnoczi
2021-05-10 10:55 ` [PATCH 0/6] block-copy: make helper APIs thread safe Vladimir Sementsov-Ogievskiy
2021-05-12 14:24 ` Stefan Hajnoczi

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