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authorMel Gorman <mgorman@suse.de>2012-12-05 09:32:56 +0000
committerMel Gorman <mgorman@suse.de>2012-12-11 14:42:58 +0000
commit220018d388b8ab1fca1c5f0c6474bab47ad2c9c0 (patch)
tree46c6a2784fb5dc0e35110b7cc7455add77eaf056 /mm/migrate.c
parentb32967ff101a7508f70be8de59b278d4df92fa00 (diff)
downloadlwn-220018d388b8ab1fca1c5f0c6474bab47ad2c9c0.tar.gz
lwn-220018d388b8ab1fca1c5f0c6474bab47ad2c9c0.zip
mm: numa: Add THP migration for the NUMA working set scanning fault case build fix
Commit "Add THP migration for the NUMA working set scanning fault case" breaks the build because HPAGE_PMD_SHIFT and HPAGE_PMD_MASK defined to explode without CONFIG_TRANSPARENT_HUGEPAGE: mm/migrate.c: In function 'migrate_misplaced_transhuge_page_put': mm/migrate.c:1549: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed mm/migrate.c:1564: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed mm/migrate.c:1566: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed mm/migrate.c:1573: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed mm/migrate.c:1606: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed mm/migrate.c:1648: error: call to '__build_bug_failed' declared with attribute error: BUILD_BUG failed CONFIG_NUMA_BALANCING allows compilation without enabling transparent hugepages, so define the dummy function for such a configuration and only define migrate_misplaced_transhuge_page_put() when transparent hugepages are enabled. Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Mel Gorman <mgorman@suse.de>
Diffstat (limited to 'mm/migrate.c')
-rw-r--r--mm/migrate.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index c9400960fd52..9341a501d168 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1602,7 +1602,9 @@ int migrate_misplaced_page(struct page *page, int node)
out:
return isolated;
}
+#endif /* CONFIG_NUMA_BALANCING */
+#if defined(CONFIG_NUMA_BALANCING) && defined(CONFIG_TRANSPARENT_HUGEPAGE)
int migrate_misplaced_transhuge_page(struct mm_struct *mm,
struct vm_area_struct *vma,
pmd_t *pmd, pmd_t entry,