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Message-ID: <CADYu309gh6QOgGXsaxJO06Xif50mK73u6VaxjwRQYWyeeL5EMg@mail.gmail.com>
Date:	Sat, 9 Jan 2016 01:50:42 +0530
From:	Aniroop Mathur <aniroop.mathur@...il.com>
To:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
Cc:	David Herrmann <dh.herrmann@...il.com>,
	Aniroop Mathur <a.mathur@...sung.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	"open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Input: evdev - add ioctl cmd EVIOCGBUFSIZE to get buffer size

On Sat, Jan 9, 2016 at 1:43 AM, One Thousand Gnomes
<gnomes@...rguk.ukuu.org.uk> wrote:
>> During system boot up, user space buf size is fixed, it cannot be
>> resized later and we cannot choose by hit&trial.
>> struct input_event* mBuffer = new input_event[mBuf];
>
> Who says that won't change ? Imagine a future case where plugging in a
> device changes the buffer size ?
>

Ofcourse buffer size can be changed but it will also change the value of bufsize
variable and accordingly user space client should also change its buf size.

> Alan

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