tree 6ca46fb09d18e8ea51a354a1494cc742fcf2f2e7
parent f449952bc8bde7fbc73c6d20dff92b627a21f8b9
author Hugh Dickins <hugh@veritas.com> 1130634980 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1130647239 -0700

[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>