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authorHeiko Carstens <heiko.carstens@de.ibm.com>2011-01-12 09:55:25 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-12 09:55:24 +0100
commit7e0d48574ec371e26fa31e23d1d314f04e31eb3e (patch)
tree1fe0dea71be6c4d2375d39c083f7156e2e6d7101 /arch/s390
parente7828bbd5e8b7c8d6480d1eb744af821989ca432 (diff)
downloadlinux-linaro-android-7e0d48574ec371e26fa31e23d1d314f04e31eb3e.tar.gz
[S390] Enable flexible mmap layout for 64 bit processes
Historically 64 bit processes use the legacy address layout. However there is no reason why 64 bit processes shouldn't benefit from the flexible mmap layout advantages. Therefore just enable it. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/mm/mmap.c13
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 89eff9e7b0b..ab7e08a01b6 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -61,16 +61,11 @@ static inline unsigned long mmap_base(void)
static inline int mmap_is_legacy(void)
{
-#ifdef CONFIG_64BIT
- /*
- * Force standard allocation for 64 bit programs.
- */
- if (!is_compat_task())
+ if (current->personality & ADDR_COMPAT_LAYOUT)
return 1;
-#endif
- return sysctl_legacy_va_layout ||
- (current->personality & ADDR_COMPAT_LAYOUT) ||
- rlimit(RLIMIT_STACK) == RLIM_INFINITY;
+ if (rlimit(RLIMIT_STACK) == RLIM_INFINITY)
+ return 1;
+ return sysctl_legacy_va_layout;
}
#ifndef CONFIG_64BIT