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authorHugh Dickins <hugh@veritas.com>2005-10-29 18:16:20 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-29 21:40:39 -0700
commit46dea3d092d23a58b42499cc8a21de0fad079f4a (patch)
tree6ca46fb09d18e8ea51a354a1494cc742fcf2f2e7 /arch/ia64/mm/init.c
parentf449952bc8bde7fbc73c6d20dff92b627a21f8b9 (diff)
downloadop-kernel-dev-46dea3d092d23a58b42499cc8a21de0fad079f4a.zip
op-kernel-dev-46dea3d092d23a58b42499cc8a21de0fad079f4a.tar.gz
[PATCH] mm: ia64 use expand_upwards
ia64 has expand_backing_store function for growing its Register Backing Store vma upwards. But more complete code for this purpose is found in the CONFIG_STACK_GROWSUP part of mm/mmap.c. Uglify its #ifdefs further to provide expand_upwards for ia64 as well as expand_stack for parisc. The Register Backing Store vma should be marked VM_ACCOUNT. Implement the intention of growing it only a page at a time, instead of passing an address outside of the vma to handle_mm_fault, with unknown consequences. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/ia64/mm/init.c')
-rw-r--r--arch/ia64/mm/init.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 98246ac..0063b2c 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -158,7 +158,7 @@ ia64_init_addr_space (void)
vma->vm_start = current->thread.rbs_bot & PAGE_MASK;
vma->vm_end = vma->vm_start + PAGE_SIZE;
vma->vm_page_prot = protection_map[VM_DATA_DEFAULT_FLAGS & 0x7];
- vma->vm_flags = VM_DATA_DEFAULT_FLAGS | VM_GROWSUP;
+ vma->vm_flags = VM_DATA_DEFAULT_FLAGS|VM_GROWSUP|VM_ACCOUNT;
down_write(&current->mm->mmap_sem);
if (insert_vm_struct(current->mm, vma)) {
up_write(&current->mm->mmap_sem);
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