[PATCH 1/3] alloc_tag: use release_pages() in the cleanup path

[Suren Baghdasaryan <surenb@google.com>]

When bulk-freeing an array of pages use release_pages() instead of freeing
them page-by-page:

Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
---
 lib/alloc_tag.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/alloc_tag.c b/lib/alloc_tag.c
index e9b33848700a..95688c4cba7a 100644
--- a/lib/alloc_tag.c
+++ b/lib/alloc_tag.c
@@ -438,9 +438,10 @@ static int vm_module_tags_populate(void)
 		if (nr < more_pages ||
 		    vmap_pages_range(phys_end, phys_end + (nr << PAGE_SHIFT), PAGE_KERNEL,
 				     next_page, PAGE_SHIFT) < 0) {
+			release_pages_arg arg = { .pages = next_page };
+
 			/* Clean up and error out */
-			for (int i = 0; i < nr; i++)
-				__free_page(next_page[i]);
+			release_pages(arg, nr);
 			return -ENOMEM;
 		}
 
-- 
2.51.0.384.g4c02a37b29-goog