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authorAneesh Kumar K.V <aneesh.kumar@linux.ibm.com>2019-07-17 02:30:41 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-17 05:23:25 +0300
commit8aa3c927ec10d1230c3ace8357f624479665f701 (patch)
tree0a517187e60eaaa3ba55ceecbf65d8b7746622ca /include/uapi/asm-generic
parent22fcea6f85f2cc74e61bd8b3640faa8467553c24 (diff)
downloadlinux-8aa3c927ec10d1230c3ace8357f624479665f701.tar.xz
mm/mmap: move common defines to mman-common.h
Two architecture that use arch specific MMAP flags are powerpc and sparc. We still have few flag values common across them and other architectures. Consolidate this in mman-common.h. Also update the comment to indicate where to find HugeTLB specific reserved values Link: http://lkml.kernel.org/r/20190604090950.31417-1-aneesh.kumar@linux.ibm.com Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/uapi/asm-generic')
-rw-r--r--include/uapi/asm-generic/mman-common.h6
-rw-r--r--include/uapi/asm-generic/mman.h9
2 files changed, 9 insertions, 6 deletions
diff --git a/include/uapi/asm-generic/mman-common.h b/include/uapi/asm-generic/mman-common.h
index 93a8b420ce1e..63b1f506ea67 100644
--- a/include/uapi/asm-generic/mman-common.h
+++ b/include/uapi/asm-generic/mman-common.h
@@ -20,7 +20,11 @@
#define MAP_FIXED 0x10 /* Interpret addr exactly */
#define MAP_ANONYMOUS 0x20 /* don't use a file */
-/* 0x0100 - 0x40000 flags are defined in asm-generic/mman.h */
+/* 0x0100 - 0x4000 flags are defined in asm-generic/mman.h */
+#define MAP_POPULATE 0x008000 /* populate (prefault) pagetables */
+#define MAP_NONBLOCK 0x010000 /* do not block on IO */
+#define MAP_STACK 0x020000 /* give out an address that is best suited for process/thread stacks */
+#define MAP_HUGETLB 0x040000 /* create a huge page mapping */
#define MAP_SYNC 0x080000 /* perform synchronous page faults for the mapping */
#define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap underlying mapping */
diff --git a/include/uapi/asm-generic/mman.h b/include/uapi/asm-generic/mman.h
index 2dffcbf705b3..57e8195d0b53 100644
--- a/include/uapi/asm-generic/mman.h
+++ b/include/uapi/asm-generic/mman.h
@@ -9,12 +9,11 @@
#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
#define MAP_LOCKED 0x2000 /* pages are locked */
#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 */
-/* Bits [26:31] are reserved, see mman-common.h for MAP_HUGETLB usage */
+/*
+ * Bits [26:31] are reserved, see asm-generic/hugetlb_encode.h
+ * for MAP_HUGETLB usage
+ */
#define MCL_CURRENT 1 /* lock all current mappings */
#define MCL_FUTURE 2 /* lock all future mappings */