The patch titled
mm: change alloc function in __vmalloc_area_node
has been added to the -mm tree. Its filename is
mm-change-alloc-function-in-__vmalloc_area_node.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mm: change alloc function in __vmalloc_area_node
From: Minchan Kim <minchan.kim@xxxxxxxxx>
__vmalloc_area_node never passes -1 to alloc_pages_node, so the node's
validity check is unnecessary.
So we can use alloc_pages_exact_node() instead of alloc_pages_node(). It
could avoid comparison and branch as 6484eb3e2a81807722 ("page allocator:
do not check NUMA node ID when the caller knows the node is") tried.
Signed-off-by: Minchan Kim <minchan.kim@xxxxxxxxx>
Cc: Nick Piggin <npiggin@xxxxxxx>
Reviewed-by: Mel Gorman <mel@xxxxxxxxx>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmalloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/vmalloc.c~mm-change-alloc-function-in-__vmalloc_area_node mm/vmalloc.c
--- a/mm/vmalloc.c~mm-change-alloc-function-in-__vmalloc_area_node
+++ a/mm/vmalloc.c
@@ -1499,7 +1499,7 @@ static void *__vmalloc_area_node(struct
if (node < 0)
page = alloc_page(gfp_mask);
else
- page = alloc_pages_node(node, gfp_mask, 0);
+ page = alloc_pages_exact_node(node, gfp_mask, 0);
if (unlikely(!page)) {
/* Successfully allocated i pages, free them in __vunmap() */
_
Patches currently in -mm which might be from minchan.kim@xxxxxxxxx are
linux-next.patch
rmap-add-exclusively-owned-pages-to-the-newest-anon_vma.patch
ntfs-clean-up-ntfs_attr_extend_initialized.patch
ntfs-use-add_to_page_cache_lru.patch
shmem-remove-redundant-code.patch
mm-remove-return-value-of-putback_lru_pages.patch
oom-filter-tasks-not-sharing-the-same-cpuset.patch
oom-sacrifice-child-with-highest-badness-score-for-parent.patch
oom-select-task-from-tasklist-for-mempolicy-ooms.patch
oom-remove-special-handling-for-pagefault-ooms.patch
oom-badness-heuristic-rewrite.patch
oom-deprecate-oom_adj-tunable.patch
oom-replace-sysctls-with-quick-mode.patch
oom-avoid-oom-killer-for-lowmem-allocations.patch
oom-remove-unnecessary-code-and-cleanup.patch
oom-default-to-killing-current-for-pagefault-ooms.patch
oom-avoid-race-for-oom-killed-tasks-detaching-mm-prior-to-exit.patch
mm-migration-take-a-reference-to-the-anon_vma-before-migrating.patch
mm-migration-do-not-try-to-migrate-unmapped-anonymous-pages.patch
mm-share-the-anon_vma-ref-counts-between-ksm-and-page-migration.patch
mm-allow-config_migration-to-be-set-without-config_numa-or-memory-hot-remove.patch
mm-allow-config_migration-to-be-set-without-config_numa-or-memory-hot-remove-fix.patch
mm-export-unusable-free-space-index-via-proc-unusable_index.patch
mm-export-unusable-free-space-index-via-proc-unusable_index-fix.patch
mm-export-fragmentation-index-via-proc-extfrag_index.patch
mm-export-fragmentation-index-via-proc-extfrag_index-fix.patch
mm-move-definition-for-lru-isolation-modes-to-a-header.patch
mm-compaction-memory-compaction-core.patch
mm-compaction-memory-compaction-core-fix.patch
mm-compaction-add-proc-trigger-for-memory-compaction.patch
mm-compaction-add-proc-trigger-for-memory-compaction-fix.patch
mm-compaction-add-proc-trigger-for-memory-compaction-fix-fix.patch
mm-compaction-add-sys-trigger-for-per-node-memory-compaction.patch
mm-compaction-direct-compact-when-a-high-order-allocation-fails.patch
mm-compaction-direct-compact-when-a-high-order-allocation-fails-reject-fix.patch
mm-compaction-add-a-tunable-that-decides-when-memory-should-be-compacted-and-when-it-should-be-reclaimed.patch
mm-migration-allow-the-migration-of-pageswapcache-pages.patch
mm-migration-allow-the-migration-of-pageswapcache-pages-fix.patch
mm-compaction-do-not-display-compaction-related-stats-when-config_compaction.patch
mm-remove-nodes-validity-check-in-alloc_pages.patch
mm-alloc-function-in-pcpu_alloc_pages.patch
mm-change-alloc-function-in-vmemmap_alloc_block.patch
mm-change-alloc-function-in-__vmalloc_area_node.patch
mm-add-comment-in-alloc_pages_exact_node.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
