linux-kernel - Re: [PATCH 0/3] COVER: Remove memcpy_page

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Date:   Wed, 15 Mar 2023 16:33:59 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Ira Weiny <ira.weiny@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        Borislav Petkov <bp@...en8.de>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 0/3] COVER: Remove memcpy_page_flushcache()

On 3/15/23 16:20, Ira Weiny wrote:
> Commit 21b56c847753 ("iov_iter: get rid of separate bvec and xarray 
> callbacks") removed the calls to memcpy_page_flushcache().
> 
> kmap_atomic() is deprecated and used in the x86 version of
> memcpy_page_flushcache().
> 
> Remove the unnecessary memcpy_page_flushcache() call from all arch's.

Hi Ira,

Since the common code user is already gone these three patches seem
quite independent.  It seems like the right thing to do is have
individual arch maintainers cherry pick their arch patch and carry it
independently.

Is there a compelling reason to have someone pick up and carry these all
together that I'm missing?