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-rw-r--r--fs/fscache/cookie.c4
-rw-r--r--lib/radix-tree.c3
2 files changed, 6 insertions, 1 deletions
diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c
index b1870a6c2cd3..e6854f5222f5 100644
--- a/fs/fscache/cookie.c
+++ b/fs/fscache/cookie.c
@@ -102,7 +102,9 @@ struct fscache_cookie *__fscache_acquire_cookie(
cookie->netfs_data = netfs_data;
cookie->flags = 0;
- INIT_RADIX_TREE(&cookie->stores, GFP_NOFS);
+ /* radix tree insertion won't use the preallocation pool unless it's
+ * told it may not wait */
+ INIT_RADIX_TREE(&cookie->stores, GFP_NOFS & ~__GFP_WAIT);
switch (cookie->def->type) {
case FSCACHE_COOKIE_TYPE_INDEX:
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 23abbd93cae1..ae6106855561 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -200,6 +200,9 @@ radix_tree_node_free(struct radix_tree_node *node)
* ensure that the addition of a single element in the tree cannot fail. On
* success, return zero, with preemption disabled. On error, return -ENOMEM
* with preemption not disabled.
+ *
+ * To make use of this facility, the radix tree must be initialised without
+ * __GFP_WAIT being passed to INIT_RADIX_TREE().
*/
int radix_tree_preload(gfp_t gfp_mask)
{