• Hugh Dickins's avatar
    [PATCH] unpaged: VM_NONLINEAR VM_RESERVED · 101d2be7
    Hugh Dickins authored
    There's one peculiar use of VM_RESERVED which the previous patch left behind:
    because VM_NONLINEAR's try_to_unmap_cluster uses vm_private_data as a swapout
    cursor, but should never meet VM_RESERVED vmas, it was a way of extending
    VM_NONLINEAR to VM_RESERVED vmas using vm_private_data for some other purpose.
     But that's an empty set - they don't have the populate function required.  So
    just throw away those VM_RESERVED tests.
    
    But one more interesting in rmap.c has to go too: try_to_unmap_one will want
    to swap out an anonymous page from VM_RESERVED or VM_UNPAGED area.
    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>
    101d2be7
rmap.c 21.4 KB