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Merge branch 'net-zerocopy-fixes' 

Willem de Bruijn says:

====================
net: zerocopy fixes

Fix two issues introduced in the msg_zerocopy patchset.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2017-08-09 16:49:17 -07:00
parent d5e7f827a6 0a4a060bb2
commit 0bdf7101c6
2 changed files with 9 additions and 4 deletions
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9
include/linux/skbuff.h
View File

@ -1273,8 +1273,13 @@ static inline void skb_zcopy_clear(struct sk_buff *skb, bool zerocopy)
struct ubuf_info *uarg = skb_zcopy(skb);
if (uarg) {
uarg->zerocopy = uarg->zerocopy && zerocopy;
sock_zerocopy_put(uarg);
if (uarg->callback == sock_zerocopy_callback) {
uarg->zerocopy = uarg->zerocopy && zerocopy;
sock_zerocopy_put(uarg);
} else {
uarg->callback(uarg, zerocopy);
}
skb_shinfo(skb)->tx_flags &= ~SKBTX_ZEROCOPY_FRAG;
}
}

4
net/core/skbuff.c
View File

@ -1044,6 +1044,8 @@ void sock_zerocopy_callback(struct ubuf_info *uarg, bool success)
u32 lo, hi;
u16 len;
mm_unaccount_pinned_pages(&uarg->mmp);
/* if !len, there was only 1 call, and it was aborted
* so do not queue a completion notification
*/
@ -1084,8 +1086,6 @@ EXPORT_SYMBOL_GPL(sock_zerocopy_callback);
void sock_zerocopy_put(struct ubuf_info *uarg)
{
if (uarg && atomic_dec_and_test(&uarg->refcnt)) {
mm_unaccount_pinned_pages(&uarg->mmp);
if (uarg->callback)
uarg->callback(uarg, uarg->zerocopy);
else