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authorHugh Dickins <hugh@veritas.com>2005-10-29 21:16:20 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-30 00:40:39 -0400
commit46dea3d092d23a58b42499cc8a21de0fad079f4a (patch)
tree6ca46fb09d18e8ea51a354a1494cc742fcf2f2e7 /include/linux
parentf449952bc8bde7fbc73c6d20dff92b627a21f8b9 (diff)
[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 'include/linux')
-rw-r--r--include/linux/mm.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7d4552fe0864..89398032bc4b 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -896,7 +896,8 @@ void handle_ra_miss(struct address_space *mapping,
896unsigned long max_sane_readahead(unsigned long nr); 896unsigned long max_sane_readahead(unsigned long nr);
897 897
898/* Do stack extension */ 898/* Do stack extension */
899extern int expand_stack(struct vm_area_struct * vma, unsigned long address); 899extern int expand_stack(struct vm_area_struct *vma, unsigned long address);
900extern int expand_upwards(struct vm_area_struct *vma, unsigned long address);
900 901
901/* Look up the first VMA which satisfies addr < vm_end, NULL if none. */ 902/* Look up the first VMA which satisfies addr < vm_end, NULL if none. */
902extern struct vm_area_struct * find_vma(struct mm_struct * mm, unsigned long addr); 903extern struct vm_area_struct * find_vma(struct mm_struct * mm, unsigned long addr);