Thread (60 messages) 60 messages, 10 authors, 2024-01-20

Re: [PATCH net-next 03/24] net: Use __napi_alloc_frag_align() instead of open coding it.

From: Paolo Abeni <pabeni@redhat.com>
Date: 2023-12-18 07:49:02
Also in: lkml

On Fri, 2023-12-15 at 18:07 +0100, Sebastian Andrzej Siewior wrote:
quoted hunk ↗ jump to hunk
The else condition within __netdev_alloc_frag_align() is an open coded
__napi_alloc_frag_align().

Use __napi_alloc_frag_align() instead of open coding it.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 net/core/skbuff.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index b157efea5dea8..de9397e45718a 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -311,11 +311,8 @@ void *__netdev_alloc_frag_align(unsigned int fragsz, unsigned int align_mask)
 
 		data = page_frag_alloc_align(nc, fragsz, GFP_ATOMIC, align_mask);
 	} else {
-		struct napi_alloc_cache *nc;
-
 		local_bh_disable();
-		nc = this_cpu_ptr(&napi_alloc_cache);
-		data = page_frag_alloc_align(&nc->page, fragsz, GFP_ATOMIC, align_mask);
There is a:

	fragsz = SKB_DATA_ALIGN(fragsz);

statement just before the enclosing 'if'. I would consider moving such
assignment inside the 'then' branch - since __napi_alloc_frag_align()
already include that.

/P
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