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sunrpc: if we're closing down a socket, clear memalloc on it first 

We currently increment the memalloc_socks counter if we have a xprt that
is associated with a swapfile. That socket can be replaced however
during a reconnect event, and the memalloc_socks counter is never
decremented if that occurs.

When tearing down a xprt socket, check to see if the xprt is set up for
swapping and sk_clear_memalloc before releasing the socket if so.

Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
steinar/wifi_calib_4_9_kernel
Jeff Layton 2015-06-03 16:14:27 -04:00 committed by Trond Myklebust
parent 8e2281330f
commit 264d1df3b3
1 changed files with 3 additions and 0 deletions
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3
net/sunrpc/xprtsock.c
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@ -827,6 +827,9 @@ static void xs_reset_transport(struct sock_xprt *transport)
if (sk == NULL)
return;
if (atomic_read(&transport->xprt.swapper))
sk_clear_memalloc(sk);
write_lock_bh(&sk->sk_callback_lock);
transport->inet = NULL;
transport->sock = NULL;