[PATCH] SUNRPC/xprt: fix call_kern.cocci warnings

[kernel test robot <lkp@intel.com>]

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CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: NeilBrown <neilb@suse.de>
CC: Trond Myklebust <trond.myklebust@hammerspace.com>
CC: Anna Schumaker <anna@kernel.org>
CC: Chuck Lever <chuck.lever@oracle.com>
CC: Jakub Kicinski <kuba@kernel.org>
CC: linux-nfs(a)vger.kernel.org
CC: netdev(a)vger.kernel.org
CC: linux-kernel(a)vger.kernel.org

From: kernel test robot <lkp@intel.com>

net/sunrpc/xprt.c:1690:18-28: ERROR: function xprt_dynamic_alloc_slot called on line 1728 inside lock on line 1722 but uses GFP_KERNEL

 Find functions that refer to GFP_KERNEL but are called with locks held.

Semantic patch information:
 The proposed change of converting the GFP_KERNEL is not necessarily the
 correct one.  It may be desired to unlock the lock, or to not call the
 function under the lock in the first place.

Generated by: scripts/coccinelle/locks/call_kern.cocci

Fixes: a721035477fb ("SUNRPC/xprt: async tasks mustn't block waiting for memory")
CC: NeilBrown <neilb@suse.de>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   git://git.linux-nfs.org/projects/trondmy/nfs-2.6.git linux-next
head:   693486d5f8951780a9bb31f7fe935171a80010e4
commit: a721035477fb5fb8abc738fbe410b07c12af3dc5 [59/66] SUNRPC/xprt: async tasks mustn't block waiting for memory
:::::: branch date: 11 hours ago
:::::: commit date: 11 hours ago

Please take the patch only if it's a positive warning. Thanks!

 net/sunrpc/xprt.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -1687,7 +1687,7 @@ out:
 static struct rpc_rqst *xprt_dynamic_alloc_slot(struct rpc_xprt *xprt)
 {
 	struct rpc_rqst *req = ERR_PTR(-EAGAIN);
-	gfp_t gfp_mask = GFP_KERNEL;
+	gfp_t gfp_mask = GFP_ATOMIC;
 
 	if (xprt->num_reqs >= xprt->max_reqs)
 		goto out;