Commit d300a41e authored May 13, 2010 by Trond Myklebust

SUNRPC: Dont run rpcauth_cache_shrinker() when gfp_mask is GFP_NOFS



Under some circumstances, put_rpccred() can end up allocating memory, so
check the gfp_mask to prevent deadlocks.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

parent 93870d76

net/sunrpc/auth.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -270,6 +270,8 @@ rpcauth_cache_shrinker(int nr_to_scan, gfp_t gfp_mask)
		LIST_HEAD(free);
		int res;

		if ((gfp_mask & GFP_KERNEL) != GFP_KERNEL)
		return (nr_to_scan == 0) ? 0 : -1;
		if (list_empty(&cred_unused))
		return 0;
		spin_lock(&rpc_credcache_lock);