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author | Lee Schermerhorn <Lee.Schermerhorn@hp.com> | 2007-10-16 01:25:39 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:42:59 -0700 |
commit | 37b07e4163f7306aa735a6e250e8d22293e5b8de (patch) | |
tree | 5c9c1935253a39aa840a9923bf1c86620cb6f733 /mm/mempolicy.c | |
parent | 0e1e7c7a739562a321fda07c7cd2a97a7114f8f8 (diff) | |
download | kernel_samsung_tuna-37b07e4163f7306aa735a6e250e8d22293e5b8de.zip kernel_samsung_tuna-37b07e4163f7306aa735a6e250e8d22293e5b8de.tar.gz kernel_samsung_tuna-37b07e4163f7306aa735a6e250e8d22293e5b8de.tar.bz2 |
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>
Diffstat (limited to 'mm/mempolicy.c')
-rw-r--r-- | mm/mempolicy.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 0d70fb7..2c521de 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -126,7 +126,7 @@ static int mpol_check_policy(int mode, nodemask_t *nodes) return -EINVAL; break; } - return nodes_subset(*nodes, node_online_map) ? 0 : -EINVAL; + return nodes_subset(*nodes, node_states[N_HIGH_MEMORY]) ? 0 : -EINVAL; } /* Generate a custom zonelist for the BIND policy. */ @@ -965,7 +965,7 @@ asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode, goto out; } - if (!nodes_subset(new, node_online_map)) { + if (!nodes_subset(new, node_states[N_HIGH_MEMORY])) { err = -EINVAL; goto out; } |