• Mel Gorman's avatar
    [PATCH] Allow an arch to expand node boundaries · fb01439c
    Mel Gorman authored
    Arch-independent zone-sizing determines the size of a node
    (pgdat->node_spanned_pages) based on the physical memory that was
    registered by the architecture.  However, when
    CONFIG_MEMORY_HOTPLUG_RESERVE is set, the architecture expects that the
    spanned_pages will be much larger and that mem_map will be allocated that
    is used lated on memory hot-add.
    
    This patch allows an architecture that sets CONFIG_MEMORY_HOTPLUG_RESERVE
    to call push_node_boundaries() which will set the node beginning and end to
    at *least* the requested boundary.
    
    Cc: Dave Hansen <haveblue@us.ibm.com>
    Cc: Andy Whitcroft <apw@shadowen.org>
    Cc: Andi Kleen <ak@muc.de>
    Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: "Keith Mannthey" <kmannth@gmail.com>
    Cc: "Luck, Tony" <tony.luck@intel.com>
    Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
    Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    fb01439c
srat.c 11.7 KB