mem-controller gfp-mask fix

Need to strip __GFP_HIGHMEM flag while passing to mem_container_cache_charge().

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/filemap.c b/mm/filemap.c
index 35867ab..5357fcc4 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -460,7 +460,8 @@
 int add_to_page_cache(struct page *page, struct address_space *mapping,
 		pgoff_t offset, gfp_t gfp_mask)
 {
-	int error = mem_cgroup_cache_charge(page, current->mm, gfp_mask);
+	int error = mem_cgroup_cache_charge(page, current->mm,
+					gfp_mask & ~__GFP_HIGHMEM);
 	if (error)
 		goto out;