From:   Ira Weiny <ira.weiny@intel.com>
Date:   Wed, 15 Mar 2023 16:20:55 -0700
Subject: [PATCH 2/3] powerpc: Remove memcpy_page_flushcache()
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Message-Id: <20221230-kmap-x86-v1-2-15f1ecccab50@intel.com>
References: <20221230-kmap-x86-v1-0-15f1ecccab50@intel.com>
In-Reply-To: <20221230-kmap-x86-v1-0-15f1ecccab50@intel.com>
To:     Dave Hansen <dave.hansen@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Nicholas Piggin <npiggin@gmail.com>,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>, Ingo Molnar <mingo@redhat.com>,
        Borislav Petkov <bp@alien8.de>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>
Cc:     Dan Williams <dan.j.williams@intel.com>,
        Al Viro <viro@zeniv.linux.org.uk>,
        linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
        linux-arm-kernel@lists.infradead.org,
        Ira Weiny <ira.weiny@intel.com>
Precedence: bulk

Commit 21b56c847753 ("iov_iter: get rid of separate bvec and xarray
callbacks") removed the calls to memcpy_page_flushcache().

Remove the unnecessary memcpy_page_flushcache() call.

Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "Dan Williams" <dan.j.williams@intel.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 arch/powerpc/include/asm/uaccess.h | 2 --
 arch/powerpc/lib/pmem.c            | 7 -------
 2 files changed, 9 deletions(-)

diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index 3ddc65c63a49..52378e641d38 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -361,8 +361,6 @@ copy_mc_to_user(void __user *to, const void *from, unsigned long n)
 
 extern long __copy_from_user_flushcache(void *dst, const void __user *src,
 		unsigned size);
-extern void memcpy_page_flushcache(char *to, struct page *page, size_t offset,
-			   size_t len);
 
 static __must_check inline bool user_access_begin(const void __user *ptr, size_t len)
 {
diff --git a/arch/powerpc/lib/pmem.c b/arch/powerpc/lib/pmem.c
index eb2919ddf9b9..4e724c4c01ad 100644
--- a/arch/powerpc/lib/pmem.c
+++ b/arch/powerpc/lib/pmem.c
@@ -85,10 +85,3 @@ void memcpy_flushcache(void *dest, const void *src, size_t size)
 	clean_pmem_range(start, start + size);
 }
 EXPORT_SYMBOL(memcpy_flushcache);
-
-void memcpy_page_flushcache(char *to, struct page *page, size_t offset,
-	size_t len)
-{
-	memcpy_flushcache(to, page_to_virt(page) + offset, len);
-}
-EXPORT_SYMBOL(memcpy_page_flushcache);

-- 
2.39.2