net: skbuff: optimization of net_zcopy_get() call in pskb_carve helpers

Browse source

Commit 98d0912e9f ("net: skbuff: fix missing zerocopy reference in
pskb_carve helpers") introduced two calls of net_zcopy_get(skb_zcopy(skb)).
In fact, skb_zcopy() has already been executed once before. When calling
net_zcopy_get(), skb_zcopy() always returns skb_uarg(skb), which results
in adding some unnecessary instructions in skb_zcopy. So, change these
two calls to directly use skb_uarg(skb) instead of skb_zcopy.

In addition, also use net_zcopy_get() instead of refcount_inc() in
pskb_expand_head() for code consistency.

No functional change intended.

Signed-off-by: Yun Lu <luyun@kylinos.cn>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260708055454.9167-1-luyun_611@163.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

...

This commit is contained in:

Yun Lu 2026-07-08 13:54:54 +08:00 • committed by Paolo Abeni

parent c783846819

commit b9ecdfda4d

1 changed files with 3 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

net/core/skbuff.c

View file