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Subject: Re: [PATCH v2 0/5] fuse: Interrupt-related optimizations and
 improvements
To:     miklos@szeredi.hu
References: <154166765576.10655.15178401490817622677.stgit@localhost.localdomain>
Cc:     linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
From:   Kirill Tkhai <ktkhai@virtuozzo.com>
Message-ID: <b0ff11bd-49ea-6073-3c06-80a57275936a@virtuozzo.com>
Date:   Wed, 26 Dec 2018 16:25:45 +0300
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ping

On 08.11.2018 12:05, Kirill Tkhai wrote:
> v2: Changes in [1-2,5] patches. The biggest change is in [5],
>     where repeater FR_INTERRUPTED assignment is removed.
> 
> This patchset consists of several parts. Patches [1-2] optimize
> likely case of request_end(), and make this function to take
> fiq->waitq.lock only, when it is really needed. This improves
> performance of this function completes.
> 
> Patch 3 makes request_end() to call wake_up() only for not
> background requests (background requests never wait answer),
> and this optimizes this function a bit more
> 
> Patches [4-5] makes code to check userspace requests correct
> interrupt id to requeue (whether we've sent this interrupt).
> 
> ---
> 
> Kirill Tkhai (5):
>       fuse: Kill fasync only if interrupt is queued in queue_interrupt()
>       fuse: Optimize request_end() by not taking fiq->waitq.lock
>       fuse: Wake up req->waitq of only not background requests in request_end()
>       fuse: Do some refactoring in fuse_dev_do_write()
>       fuse: Verify userspace asks to requeue interrupt that we really sent
> 
> 
>  fs/fuse/dev.c |   57 ++++++++++++++++++++++++++++++++++++++-------------------
>  1 file changed, 38 insertions(+), 19 deletions(-)
> 
> --
> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
>