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authorRadu Caragea <sinaelgl@gmail.com>2013-08-21 21:55:59 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-08-22 21:19:35 +0400
commit41aacc1eea645c99edbe8fbcf78a97dc9b862adc (patch)
tree2f1a4a363b738d374c58ca2a0d520f2b0981bf67 /include
parent5ea80f76a56605a190a7ea16846c82aa63dbd0aa (diff)
downloadlinux-41aacc1eea645c99edbe8fbcf78a97dc9b862adc.tar.xz
x86 get_unmapped_area: Access mmap_legacy_base through mm_struct member
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: Greg KH <greg@kroah.com> Cc: Kamal Mostafa <kamal@canonical.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.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 fb425aa16c01..faf4b7c1ad12 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -332,6 +332,7 @@ struct mm_struct {
unsigned long pgoff, unsigned long flags);
#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 highest_vm_end; /* highest vma end address */
pgd_t * pgd;