• Hugh Dickins's avatar
    [PATCH] mm: ia64 use expand_upwards · 46dea3d0
    Hugh Dickins authored
    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: default avatarHugh Dickins <hugh@veritas.com>
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    46dea3d0
fault.c 6.47 KB