• Christoph Lameter's avatar
    [PATCH] linearly index zone->node_zonelists[] · 19655d34
    Christoph Lameter authored
    I wonder why we need this bitmask indexing into zone->node_zonelists[]?
    We always start with the highest zone and then include all lower zones
    if we build zonelists.
    Are there really cases where we need allocation from ZONE_DMA or
    ZONE_HIGHMEM but not ZONE_NORMAL? It seems that the current implementation
    of highest_zone() makes that already impossible.
    If we go linear on the index then gfp_zone() == highest_zone() and a lot
    of definitions fall by the wayside.
    We can now revert back to the use of gfp_zone() in mempolicy.c ;-)
    Signed-off-by: default avatarChristoph Lameter <clameter@sgi.com>
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
gfp.h 5.83 KB