linux-kernel - Re: [RFC 1/3] lib: copy_{from,to}_user using gup & kmap

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Message-ID: <20200614145356.GA3134@afzalpc>
Date:   Sun, 14 Jun 2020 20:25:07 +0530
From:   afzal mohammed <afzal.mohd.ma@...il.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Russell King - ARM Linux admin <linux@...linux.org.uk>,
        Linus Walleij <linus.walleij@...aro.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Nicolas Pitre <nico@...xnic.net>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [RFC 1/3] lib: copy_{from,to}_user using gup & kmap_atomic()

Hi,

On Sun, Jun 14, 2020 at 06:51:43PM +0530, afzal mohammed wrote:

> It is MB/s for copying one file to another via user space buffer, i.e.
> the value coreutils 'dd' shows w/ status=progress (here it was busybox
> 'dd', so instead it was enabling a compile time option)

Just for correctness, status=progress is not required, it's there in
the default 3rd line of coreutils 'dd' o/p

Regards
afzal