[PATCH] z3fold: Use gfpflags_allow_blocking

[Matthew Wilcox <willy@xxxxxxxxxxxxx>]

From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>

We have a perfectly good macro to determine whether the gfp flags allow
you to sleep or not; use it instead of trying to infer it.

Signed-off-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>

diff --git a/mm/z3fold.c b/mm/z3fold.c
index d589d318727f..46fed640a956 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -533,7 +533,7 @@ static int z3fold_alloc(struct z3fold_pool *pool, size_t size, gfp_t gfp,
 	struct z3fold_header *zhdr = NULL;
 	struct page *page = NULL;
 	enum buddy bud;
-	bool can_sleep = (gfp & __GFP_RECLAIM) == __GFP_RECLAIM;
+	bool can_sleep = gfpflags_allow_blocking(gfp);
 
 	if (!size || (gfp & __GFP_HIGHMEM))
 		return -EINVAL;