From: Kent Overstreet <kmo@daterainc.com>
Date: Mon, 19 May 2014 15:55:40 +0000 (-0700)
Subject: bcache: Allocate bounce buffers with GFP_NOWAIT
X-Git-Tag: Ubuntu-snapdragon-4.4.0-1050.54~9804^2^2~12
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=501d52a90cbe652b41336c206ff0e95799d5a9b5;p=mirror_ubuntu-artful-kernel.git

bcache: Allocate bounce buffers with GFP_NOWAIT

There's no point in blocking on these allocations, since our fallback paths will
probably go faster than blocking.

Change-Id: I733ca202c25cb36bde02607a0a60552229a4241c
---

diff --git a/drivers/md/bcache/bset.c b/drivers/md/bcache/bset.c
index 545416415305..646fe85261c1 100644
--- a/drivers/md/bcache/bset.c
+++ b/drivers/md/bcache/bset.c
@@ -1182,7 +1182,7 @@ static void __btree_sort(struct btree_keys *b, struct btree_iter *iter,
 {
 	uint64_t start_time;
 	bool used_mempool = false;
-	struct bset *out = (void *) __get_free_pages(__GFP_NOWARN|GFP_NOIO,
+	struct bset *out = (void *) __get_free_pages(__GFP_NOWARN|GFP_NOWAIT,
 						     order);
 	if (!out) {
 		struct page *outp;
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index e538d45fa65a..39c7f5b73724 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -421,7 +421,7 @@ static void do_btree_node_write(struct btree *b)
 	SET_PTR_OFFSET(&k.key, 0, PTR_OFFSET(&k.key, 0) +
 		       bset_sector_offset(&b->keys, i));
 
-	if (!bio_alloc_pages(b->bio, GFP_NOIO)) {
+	if (!bio_alloc_pages(b->bio, __GFP_NOWARN|GFP_NOWAIT)) {
 		int j;
 		struct bio_vec *bv;
 		void *base = (void *) ((unsigned long) i & ~(PAGE_SIZE - 1));