The patch titled
mm: add MAP_HUGETLB for mmaping pseudo-anonymous huge page regions
has been added to the -mm tree. Its filename is
mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions.patch
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------------------------------------------------------
Subject: mm: add MAP_HUGETLB for mmaping pseudo-anonymous huge page regions
From: Arnd Bergmann <arnd@xxxxxxxx>
Add a flag for mmap that will be used to request a huge page region that
will look like anonymous memory to user space. This is accomplished by
using a file on the internal vfsmount. MAP_HUGETLB is a modifier of
MAP_ANONYMOUS and so must be specified with it. The region will behave
the same as a MAP_ANONYMOUS region using small pages.
The patch also adds the MAP_STACK flag, which was previously defined only
on some architectures but not on others. Since MAP_STACK is meant to be a
hint only, architectures can define it without assigning a specific
meaning to it.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Eric B Munson <ebmunson@xxxxxxxxxx>
Cc: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: <linux-arch@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/alpha/include/asm/mman.h | 2 ++
arch/arm/include/asm/mman.h | 2 ++
arch/avr32/include/asm/mman.h | 2 ++
arch/cris/include/asm/mman.h | 2 ++
arch/frv/include/asm/mman.h | 2 ++
arch/h8300/include/asm/mman.h | 2 ++
arch/ia64/include/asm/mman.h | 2 ++
arch/m32r/include/asm/mman.h | 2 ++
arch/m68k/include/asm/mman.h | 2 ++
arch/mips/include/asm/mman.h | 2 ++
arch/mn10300/include/asm/mman.h | 2 ++
arch/parisc/include/asm/mman.h | 2 ++
arch/powerpc/include/asm/mman.h | 2 ++
arch/s390/include/asm/mman.h | 2 ++
arch/sparc/include/asm/mman.h | 2 ++
arch/xtensa/include/asm/mman.h | 2 ++
include/asm-generic/mman.h | 1 +
17 files changed, 33 insertions(+)
diff -puN arch/alpha/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/alpha/include/asm/mman.h
--- a/arch/alpha/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/alpha/include/asm/mman.h
@@ -28,6 +28,8 @@
#define MAP_NORESERVE 0x10000 /* don't check for reservations */
#define MAP_POPULATE 0x20000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x40000 /* do not block on IO */
+#define MAP_STACK 0x80000 /* give out an address that is best suited for process/thread stacks */
+#define MAP_HUGETLB 0x100000 /* create a huge page mapping */
#define MS_ASYNC 1 /* sync memory asynchronously */
#define MS_SYNC 2 /* synchronous memory sync */
diff -puN arch/arm/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/arm/include/asm/mman.h
--- a/arch/arm/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/arm/include/asm/mman.h
@@ -10,6 +10,8 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) page tables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff -puN arch/avr32/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/avr32/include/asm/mman.h
--- a/arch/avr32/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/avr32/include/asm/mman.h
@@ -10,6 +10,8 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) page tables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff -puN arch/cris/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/cris/include/asm/mman.h
--- a/arch/cris/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/cris/include/asm/mman.h
@@ -12,6 +12,8 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff -puN arch/frv/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/frv/include/asm/mman.h
--- a/arch/frv/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/frv/include/asm/mman.h
@@ -10,6 +10,8 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff -puN arch/h8300/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/h8300/include/asm/mman.h
--- a/arch/h8300/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/h8300/include/asm/mman.h
@@ -10,6 +10,8 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff -puN arch/ia64/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/ia64/include/asm/mman.h
--- a/arch/ia64/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/ia64/include/asm/mman.h
@@ -18,6 +18,8 @@
#define MAP_NORESERVE 0x04000 /* don't check for reservations */
#define MAP_POPULATE 0x08000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff -puN arch/m32r/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/m32r/include/asm/mman.h
--- a/arch/m32r/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/m32r/include/asm/mman.h
@@ -10,6 +10,8 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff -puN arch/m68k/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/m68k/include/asm/mman.h
--- a/arch/m68k/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/m68k/include/asm/mman.h
@@ -10,6 +10,8 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff -puN arch/mips/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/mips/include/asm/mman.h
--- a/arch/mips/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/mips/include/asm/mman.h
@@ -46,6 +46,8 @@
#define MAP_LOCKED 0x8000 /* pages are locked */
#define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
#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 */
/*
* Flags for msync
diff -puN arch/mn10300/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/mn10300/include/asm/mman.h
--- a/arch/mn10300/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/mn10300/include/asm/mman.h
@@ -21,6 +21,8 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff -puN arch/parisc/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/parisc/include/asm/mman.h
--- a/arch/parisc/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/parisc/include/asm/mman.h
@@ -22,6 +22,8 @@
#define MAP_GROWSDOWN 0x8000 /* stack-like segment */
#define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
#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 MS_SYNC 1 /* synchronous memory sync */
#define MS_ASYNC 2 /* sync memory asynchronously */
diff -puN arch/powerpc/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/powerpc/include/asm/mman.h
--- a/arch/powerpc/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/powerpc/include/asm/mman.h
@@ -25,6 +25,8 @@
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#ifdef __KERNEL__
#ifdef CONFIG_PPC64
diff -puN arch/s390/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/s390/include/asm/mman.h
--- a/arch/s390/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/s390/include/asm/mman.h
@@ -18,6 +18,8 @@
#define MAP_NORESERVE 0x4000 /* don't check for reservations */
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
diff -puN arch/sparc/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/sparc/include/asm/mman.h
--- a/arch/sparc/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/sparc/include/asm/mman.h
@@ -20,6 +20,8 @@
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
+#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 */
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
diff -puN arch/x86/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/x86/include/asm/mman.h
diff -puN arch/xtensa/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions arch/xtensa/include/asm/mman.h
--- a/arch/xtensa/include/asm/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/arch/xtensa/include/asm/mman.h
@@ -53,6 +53,8 @@
#define MAP_LOCKED 0x8000 /* pages are locked */
#define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
#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 */
/*
* Flags for msync
diff -puN include/asm-generic/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions include/asm-generic/mman.h
--- a/include/asm-generic/mman.h~mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions
+++ a/include/asm-generic/mman.h
@@ -11,6 +11,7 @@
#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
#define MAP_NONBLOCK 0x10000 /* do not block on IO */
#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 */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
origin.patch
linux-next.patch
mm-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions.patch
hugetlb-add-map_hugetlb-for-mmaping-pseudo-anonymous-huge-page-regions-fix.patch
asm-sections-add-text-data-checking-functions-for-arches-to-override.patch
kallsyms-use-new-arch_is_kernel_text.patch
lockdep-use-new-arch_is_kernel_data.patch
blackfin-override-text-data-checking-functions.patch
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