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(parent: 9559fcd) | patch
guard page for stacks that grow upwards
authorLuck, Tony <tony.luck@intel.com>
Tue, 24 Aug 2010 18:44:18 +0000 (11:44 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 24 Aug 2010 19:13:20 +0000 (12:13 -0700)
commit8ca3eb08097f6839b2206e2242db4179aee3cfb3
tree32b9f033230d615d248fa0bbfa1a0c644a422ed8tree | snapshot (tar.gz zip)
parent9559fcdbff4f93d29af04478bbc48294519424f5commit | diff
guard page for stacks that grow upwards

pa-risc and ia64 have stacks that grow upwards. Check that
they do not run into other mappings. By making VM_GROWSUP
0x0 on architectures that do not ever use it, we can avoid
some unpleasant #ifdefs in check_stack_guard_page().

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/mm.h diff | blob | blame | history
mm/memory.c diff | blob | blame | history
mm/mmap.c diff | blob | blame | history