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authorRadu Caragea <sinaelgl@gmail.com>2013-08-21 20:55:59 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-08-29 09:47:39 -0700
commitff1a668bc01c811ffcf19a3d43af58d7bd658986 (patch)
tree1b498dbdba936624fc26f82dac0bd69082c3107d /include
parentbd4b69c1f7f58fc28fb636a3be006770edf58d68 (diff)
downloadvexpress-lsk-ff1a668bc01c811ffcf19a3d43af58d7bd658986.tar.gz
x86 get_unmapped_area: Access mmap_legacy_base through mm_struct member
commit 41aacc1eea645c99edbe8fbcf78a97dc9b862adc upstream. This is the updated version of df54d6fa5427 ("x86 get_unmapped_area(): use proper mmap base for bottom-up direction") that only randomizes the mmap base address once. Signed-off-by: Radu Caragea <sinaelgl@gmail.com> Reported-and-tested-by: Jeff Shorey <shoreyjeff@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Michel Lespinasse <walken@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Adrian Sendroiu <molecula2788@gmail.com> Cc: Kamal Mostafa <kamal@canonical.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mm_types.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index ace9a5f01c6..4a189ba6b12 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -333,6 +333,7 @@ struct mm_struct {
void (*unmap_area) (struct mm_struct *mm, unsigned long addr);
#endif
unsigned long mmap_base; /* base of mmap area */
+ unsigned long mmap_legacy_base; /* base of mmap area in bottom-up allocations */
unsigned long task_size; /* size of task vm space */
unsigned long cached_hole_size; /* if non-zero, the largest hole below free_area_cache */
unsigned long free_area_cache; /* first hole of size cached_hole_size or larger */