linux-kernel - Re: [PATCH 2/2] mmap.2: MAP

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Message-ID: <87k1xfpqxi.fsf@concordia.ellerman.id.au>
Date:   Fri, 22 Dec 2017 11:06:01 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Kees Cook <keescook@...omium.org>,
        "Michael Kerrisk \(man-pages\)" <mtk.manpages@...il.com>,
        Cyril Hrubis <chrubis@...e.cz>, Pavel Machek <pavel@....cz>,
        Michal Hocko <mhocko@...nel.org>,
        Linux API <linux-api@...r.kernel.org>,
        Khalid Aziz <khalid.aziz@...cle.com>,
        "Russell King - ARM Linux" <linux@...linux.org.uk>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Linux-MM <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Florian Weimer <fweimer@...hat.com>,
        John Hubbard <jhubbard@...dia.com>,
        Matthew Wilcox <willy@...radead.org>,
        Jann Horn <jannh@...gle.com>,
        "Mike Rapoport" <rppt@...ux.vnet.ibm.com>
Subject: Re: [PATCH 2/2] mmap.2: MAP_FIXED updated documentation

Andrew Morton <akpm@...ux-foundation.org> writes:

> On Thu, 21 Dec 2017 23:38:37 +1100 Michael Ellerman <mpe@...erman.id.au> wrote:
>
>> > Andrew, can you s/MAP_FIXED_SAFE/MAP_FIXED_NOREPLACE/g in the series?
>
> Done.

Thanks.

I sent an ack at some point, here's another if you like:

  Acked-by: Michael Ellerman <mpe@...erman.id.au>

There's also a couple of stray whitespace changes in the version in
linux-next, and some inconsistent whitespace between the various mman.h
changes. Patch below to fix them up if you haven't already.

cheers


diff --git a/arch/mips/include/uapi/asm/mman.h b/arch/mips/include/uapi/asm/mman.h
index bb9ccb5ff3ed..5e362db59780 100644
--- a/arch/mips/include/uapi/asm/mman.h
+++ b/arch/mips/include/uapi/asm/mman.h
@@ -50,7 +50,6 @@
 #define MAP_NONBLOCK	0x20000		/* do not block on IO */
 #define MAP_STACK	0x40000		/* give out an address that is best suited for process/thread stacks */
 #define MAP_HUGETLB	0x80000		/* create a huge page mapping */
-
 #define MAP_FIXED_SAFE	0x100000	/* MAP_FIXED which doesn't unmap underlying mapping */
 
 /*
diff --git a/arch/parisc/include/uapi/asm/mman.h b/arch/parisc/include/uapi/asm/mman.h
index dedc09ead4cb..a0702506d7c6 100644
--- a/arch/parisc/include/uapi/asm/mman.h
+++ b/arch/parisc/include/uapi/asm/mman.h
@@ -26,7 +26,6 @@
 #define MAP_NONBLOCK	0x20000		/* do not block on IO */
 #define MAP_STACK	0x40000		/* give out an address that is best suited for process/thread stacks */
 #define MAP_HUGETLB	0x80000		/* create a huge page mapping */
-
 #define MAP_FIXED_SAFE	0x100000	/* MAP_FIXED which doesn't unmap underlying mapping */
 
 #define MS_SYNC		1		/* synchronous memory sync */
diff --git a/arch/sparc/include/uapi/asm/mman.h b/arch/sparc/include/uapi/asm/mman.h
index d21bffd5d3dc..715a2c927e79 100644
--- a/arch/sparc/include/uapi/asm/mman.h
+++ b/arch/sparc/include/uapi/asm/mman.h
@@ -25,4 +25,5 @@
 #define MAP_STACK	0x20000		/* give out an address that is best suited for process/thread stacks */
 #define MAP_HUGETLB	0x40000		/* create a huge page mapping */
 
+
 #endif /* _UAPI__SPARC_MMAN_H__ */
diff --git a/arch/xtensa/include/uapi/asm/mman.h b/arch/xtensa/include/uapi/asm/mman.h
index da73b6d5dbcd..52f4d21923b3 100644
--- a/arch/xtensa/include/uapi/asm/mman.h
+++ b/arch/xtensa/include/uapi/asm/mman.h
@@ -65,7 +65,6 @@
 # define MAP_UNINITIALIZED 0x0		/* Don't support this flag */
 #endif
 
-
 /*
  * Flags for msync
  */