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Date: Thu, 27 Apr 2017 08:30:54 +0200
From: Ingo Molnar <mingo@kernel.org>
To: Dan Williams <dan.j.williams@intel.com>
Cc: viro@zeniv.linux.org.uk, Jan Kara <jack@suse.cz>,
        Matthew Wilcox <mawilcox@microsoft.com>, x86@kernel.org,
        linux-kernel@vger.kernel.org, hch@lst.de, linux-block@vger.kernel.org,
        linux-nvdimm@ml01.01.org, Jeff Moyer <jmoyer@redhat.com>,
        Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
        linux-fsdevel@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
        Ross Zwisler <ross.zwisler@linux.intel.com>
Subject: Re: [RFC PATCH] x86, uaccess, pmem: introduce
 copy_from_iter_writethru for dax + pmem
Message-ID: <20170427063054.soejyqocqqrihfdw@gmail.com>
References: <20170425012230.GX29622@ZenIV.linux.org.uk>
 <149324377946.28224.12306514223331326459.stgit@dwillia2-desk3.amr.corp.intel.com>
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* Dan Williams <dan.j.williams@intel.com> wrote:

> +#ifdef CONFIG_ARCH_HAS_UACCESS_WRITETHRU
> +#define __HAVE_ARCH_MEMCPY_WRITETHRU 1
> +void memcpy_writethru(void *dst, const void *src, size_t cnt);
> +#endif

This should be named memcpy_wt(), which is the well-known postfix for 
write-through.

We already have ioremap_wt(), set_memory_wt(), etc. - no need to introduce a 
longer variant with uncommon spelling.

Thanks,

	Ingo