[PATCH v5 02/12] mm: define MADV_FREE for some arches
From: Minchan Kim <minchan@kernel.org>
Date: 2015-11-30 06:40:01
Also in:
linux-mm, lkml
Subsystem:
alpha port, mips, parisc architecture, tensilica xtensa port (xtensa), the rest · Maintainers:
Richard Henderson, Matt Turner, Magnus Lindholm, Thomas Bogendoerfer, "James E.J. Bottomley", Helge Deller, Chris Zankel, Max Filippov, Linus Torvalds
Most architectures use asm-generic, but alpha, mips, parisc, xtensa need their own definitions. This patch defines MADV_FREE for them so it should fix build break for their architectures. Maybe, I should split and feed piecies to arch maintainers but included here for mmotm convenience. Cc: Michael Kerrisk <redacted> Cc: Richard Henderson <redacted> Cc: Ivan Kokshaysky <redacted> Cc: "James E.J. Bottomley" <redacted> Cc: Helge Deller <deller@gmx.de> Cc: Ralf Baechle <redacted> Cc: Chris Zankel <chris@zankel.net> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Reported-by: kbuild test robot <redacted> Signed-off-by: Minchan Kim <minchan@kernel.org> --- arch/alpha/include/uapi/asm/mman.h | 1 + arch/mips/include/uapi/asm/mman.h | 1 + arch/parisc/include/uapi/asm/mman.h | 1 + arch/xtensa/include/uapi/asm/mman.h | 1 + 4 files changed, 4 insertions(+)
diff --git a/arch/alpha/include/uapi/asm/mman.h b/arch/alpha/include/uapi/asm/mman.h
index f2f949671798..d828beb5e69b 100644
--- a/arch/alpha/include/uapi/asm/mman.h
+++ b/arch/alpha/include/uapi/asm/mman.h@@ -47,6 +47,7 @@ #define MADV_WILLNEED 3 /* will need these pages */ #define MADV_SPACEAVAIL 5 /* ensure resources are available */ #define MADV_DONTNEED 6 /* don't need these pages */ +#define MADV_FREE 7 /* free pages only if memory pressure */ /* common/generic parameters */ #define MADV_REMOVE 9 /* remove these pages & resources */
diff --git a/arch/mips/include/uapi/asm/mman.h b/arch/mips/include/uapi/asm/mman.h
index 97c03f468924..a6f8daff8e3b 100644
--- a/arch/mips/include/uapi/asm/mman.h
+++ b/arch/mips/include/uapi/asm/mman.h@@ -73,6 +73,7 @@ #define MADV_SEQUENTIAL 2 /* expect sequential page references */ #define MADV_WILLNEED 3 /* will need these pages */ #define MADV_DONTNEED 4 /* don't need these pages */ +#define MADV_FREE 5 /* free pages only if memory pressure */ /* common parameters: try to keep these consistent across architectures */ #define MADV_REMOVE 9 /* remove these pages & resources */
diff --git a/arch/parisc/include/uapi/asm/mman.h b/arch/parisc/include/uapi/asm/mman.h
index dd4d1876a020..bda94f0d0b94 100644
--- a/arch/parisc/include/uapi/asm/mman.h
+++ b/arch/parisc/include/uapi/asm/mman.h@@ -43,6 +43,7 @@ #define MADV_SPACEAVAIL 5 /* insure that resources are reserved */ #define MADV_VPS_PURGE 6 /* Purge pages from VM page cache */ #define MADV_VPS_INHERIT 7 /* Inherit parents page size */ +#define MADV_FREE 8 /* free pages only if memory pressure */ /* common/generic parameters */ #define MADV_REMOVE 9 /* remove these pages & resources */
diff --git a/arch/xtensa/include/uapi/asm/mman.h b/arch/xtensa/include/uapi/asm/mman.h
index 360944e1da52..83c5150b06f9 100644
--- a/arch/xtensa/include/uapi/asm/mman.h
+++ b/arch/xtensa/include/uapi/asm/mman.h@@ -86,6 +86,7 @@ #define MADV_SEQUENTIAL 2 /* expect sequential page references */ #define MADV_WILLNEED 3 /* will need these pages */ #define MADV_DONTNEED 4 /* don't need these pages */ +#define MADV_FREE 5 /* free pages only if memory pressure */ /* common parameters: try to keep these consistent across architectures */ #define MADV_REMOVE 9 /* remove these pages & resources */
--
1.9.1
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