From mboxrd@z Thu Jan  1 00:00:00 1970
From: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Subject: Re: [PATCH] Input: evdev - add ioctl cmd EVIOCGBUFSIZE to get
 buffer size
Date: Fri, 8 Jan 2016 20:13:46 +0000
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To: Aniroop Mathur <aniroop.mathur@gmail.com>
Cc: David Herrmann <dh.herrmann@gmail.com>, Aniroop Mathur <a.mathur@samsung.com>, Dmitry Torokhov <dmitry.torokhov@gmail.com>, "open list:HID CORE LAYER" <linux-input@vger.kernel.org>, linux-kernel <linux-kernel@vger.kernel.org>

> 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 ?

Alan