mac80211: Don't sleep when growing the mesh path

After commit 1928ecab620907a0953f811316d05f367f3f4dba (mac80211: fix and
simplify mesh locking) mesh table allocation is performed with the
pathtbl_resize_lock taken.  Under those conditions one should not sleep.
This patch makes the allocations GFP_ATOMIC to prevent that.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 2bda0ac62326..51f6fe86d890 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -76,12 +76,12 @@ static struct mesh_table *mesh_table_alloc(int size_order)
         int i;
         struct mesh_table *newtbl;
 
-        newtbl = kmalloc(sizeof(struct mesh_table), GFP_KERNEL);
+        newtbl = kmalloc(sizeof(struct mesh_table), GFP_ATOMIC);
         if (!newtbl)
                 return NULL;
 
         newtbl->hash_buckets = kzalloc(sizeof(struct hlist_head) *
-                        (1 << size_order), GFP_KERNEL);
+                        (1 << size_order), GFP_ATOMIC);
 
         if (!newtbl->hash_buckets) {
                 kfree(newtbl);
@@ -89,7 +89,7 @@ static struct mesh_table *mesh_table_alloc(int size_order)
         }
 
         newtbl->hashwlock = kmalloc(sizeof(spinlock_t) *
-                        (1 << size_order), GFP_KERNEL);
+                        (1 << size_order), GFP_ATOMIC);
         if (!newtbl->hashwlock) {
                 kfree(newtbl->hash_buckets);
                 kfree(newtbl);