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authorHugh Dickins <hugh@veritas.com>2006-07-26 21:39:49 +0100
committerDave Jones <davej@redhat.com>2006-07-26 19:58:39 -0400
commit804af2cf6e7af31d2e664b54e657dddd9b531dbd (patch)
treea9127236c76953ddc627b8133aae208651e206fd /mm/mmap.c
parent64821324ca49f24be1a66f2f432108f96a24e596 (diff)
[AGPGART] remove private page protection map
AGP keeps its own copy of the protection_map, upcoming DRM changes will also require access to this map from modules. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Dave Airlie <airlied@linux.ie> Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'mm/mmap.c')
-rw-r--r--mm/mmap.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index c1868ecdbc5..c7ed061f450 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -60,6 +60,13 @@ pgprot_t protection_map[16] = {
__S000, __S001, __S010, __S011, __S100, __S101, __S110, __S111
};
+pgprot_t vm_get_page_prot(unsigned long vm_flags)
+{
+ return protection_map[vm_flags &
+ (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)];
+}
+EXPORT_SYMBOL(vm_get_page_prot);
+
int sysctl_overcommit_memory = OVERCOMMIT_GUESS; /* heuristic overcommit */
int sysctl_overcommit_ratio = 50; /* default is 50% */
int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;