[PATCH] mac80211: Use GFP_KERNEL instead of GFP_ATOMIC when possible

From: Christophe JAILLET
Date: Sun Feb 20 2022 - 03:23:44 EST


Previous memory allocations in this function already use GFP_KERNEL, so
use __dev_alloc_skb() and an explicit GFP_KERNEL instead of an implicit
GFP_ATOMIC.

This gives more opportunities of successful allocation.

Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
net/mac80211/mesh.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 1d3b4ad32965..5275f4f32a78 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -853,7 +853,7 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh)

bcn = kzalloc(sizeof(*bcn) + head_len + tail_len, GFP_KERNEL);
/* need an skb for IE builders to operate on */
- skb = dev_alloc_skb(max(head_len, tail_len));
+ skb = __dev_alloc_skb(max(head_len, tail_len), GFP_KERNEL);

if (!bcn || !skb)
goto out_free;
--
2.32.0