diff options
| author | Jiri Kosina <jkosina@suse.cz> | 2010-08-04 15:14:38 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2010-08-04 15:14:38 +0200 |
| commit | d790d4d583aeaed9fc6f8a9f4d9f8ce6b1c15c7f (patch) | |
| tree | 854ab394486288d40fa8179cbfaf66e8bdc44b0f /arch/arm/mm/mmap.c | |
| parent | fix comment typo "choosed" -> "chosen" (diff) | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw (diff) | |
| download | linux-d790d4d583aeaed9fc6f8a9f4d9f8ce6b1c15c7f.tar.xz linux-d790d4d583aeaed9fc6f8a9f4d9f8ce6b1c15c7f.zip | |
Merge branch 'master' into for-next
Diffstat (limited to 'arch/arm/mm/mmap.c')
| -rw-r--r-- | arch/arm/mm/mmap.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c index f5abc51c5a07..4f5b39687df5 100644 --- a/arch/arm/mm/mmap.c +++ b/arch/arm/mm/mmap.c @@ -7,6 +7,7 @@ #include <linux/shm.h> #include <linux/sched.h> #include <linux/io.h> +#include <linux/random.h> #include <asm/cputype.h> #include <asm/system.h> @@ -80,6 +81,9 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, start_addr = addr = TASK_UNMAPPED_BASE; mm->cached_hole_size = 0; } + /* 8 bits of randomness in 20 address space bits */ + if (current->flags & PF_RANDOMIZE) + addr += (get_random_int() % (1 << 8)) << PAGE_SHIFT; full_search: if (do_align) |