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mm: introduce node_zonelist() for accessing the zonelist for a GFP mask

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Introduce a node_zonelist() helper function.  It is used to lookup the
appropriate zonelist given a node and a GFP mask.  The patch on its own is a
cleanup but it helps clarify parts of the two-zonelist-per-node patchset.  If
necessary, it can be merged with the next patch in this set without problems.

Reviewed-by: Christoph Lameter <[email protected]>
Signed-off-by: Mel Gorman <[email protected]>
Signed-off-by: Lee Schermerhorn <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Nick Piggin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Mel Gorman 2008-04-28 02:12:14 -07:00 • committed by Linus Torvalds
commit 0e88460da6
8 changed files with 17 additions and 17 deletions
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6
mm/mempolicy.c
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@ -1183,7 +1183,7 @@ static struct zonelist *zonelist_policy(gfp_t gfp, struct mempolicy *policy)
nd = 0;
BUG();
}
return NODE_DATA(nd)->node_zonelists + gfp_zone(gfp);
return node_zonelist(nd, gfp);
}
/* Do dynamic interleaving for a process */
@ -1299,7 +1299,7 @@ struct zonelist *huge_zonelist(struct vm_area_struct *vma, unsigned long addr,
if (unlikely(pol != &default_policy &&
pol != current->mempolicy))
__mpol_free(pol); /* finished with pol */
return NODE_DATA(nid)->node_zonelists + gfp_zone(gfp_flags);
return node_zonelist(nid, gfp_flags);
}
zl = zonelist_policy(GFP_HIGHUSER, pol);
@ -1321,7 +1321,7 @@ static struct page *alloc_page_interleave(gfp_t gfp, unsigned order,
struct zonelist *zl;
struct page *page;
zl = NODE_DATA(nid)->node_zonelists + gfp_zone(gfp);
zl = node_zonelist(nid, gfp);
page = __alloc_pages(gfp, order, zl);
if (page && page_zone(page) == zl->zones[0])
inc_zone_page_state(page, NUMA_INTERLEAVE_HIT);