]> err.no Git - linux-2.6/commit
memoryless nodes: fixup uses of node_online_map in generic code
authorLee Schermerhorn <Lee.Schermerhorn@hp.com>
Tue, 16 Oct 2007 08:25:39 +0000 (01:25 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Tue, 16 Oct 2007 16:42:59 +0000 (09:42 -0700)
commit37b07e4163f7306aa735a6e250e8d22293e5b8de
tree5c9c1935253a39aa840a9923bf1c86620cb6f733
parent0e1e7c7a739562a321fda07c7cd2a97a7114f8f8
memoryless nodes: fixup uses of node_online_map in generic code

Here's a cut at fixing up uses of the online node map in generic code.

mm/shmem.c:shmem_parse_mpol()

Ensure nodelist is subset of nodes with memory.
Use node_states[N_HIGH_MEMORY] as default for missing
nodelist for interleave policy.

mm/shmem.c:shmem_fill_super()

initialize policy_nodes to node_states[N_HIGH_MEMORY]

mm/page-writeback.c:highmem_dirtyable_memory()

sum over nodes with memory

mm/page_alloc.c:zlc_setup()

allowednodes - use nodes with memory.

mm/page_alloc.c:default_zonelist_order()

average over nodes with memory.

mm/page_alloc.c:find_next_best_node()

skip nodes w/o memory.
N_HIGH_MEMORY state mask may not be initialized at this time,
unless we want to depend on early_calculate_totalpages() [see
below].  Will ZONE_MOVABLE ever be configurable?

mm/page_alloc.c:find_zone_movable_pfns_for_nodes()

spread kernelcore over nodes with memory.

This required calling early_calculate_totalpages()
unconditionally, and populating N_HIGH_MEMORY node
state therein from nodes in the early_node_map[].
If we can depend on this, we can eliminate the
population of N_HIGH_MEMORY mask from __build_all_zonelists()
and use the N_HIGH_MEMORY mask in find_next_best_node().

mm/mempolicy.c:mpol_check_policy()

Ensure nodes specified for policy are subset of
nodes with memory.

[akpm@linux-foundation.org: fix warnings]
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Acked-by: Christoph Lameter <clameter@sgi.com>
Cc: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/mempolicy.c
mm/page-writeback.c
mm/page_alloc.c
mm/shmem.c