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authorSowmini Varadhan <sowmini.varadhan@oracle.com>2015-04-21 10:30:41 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-07-10 10:37:55 -0700
commit1996810d460d49b8b181db861bd4755933ff62b6 (patch)
tree8dd7335fd72c14b8e3e870653e145a1817514151
parenta0768244828d0da096ce957616150220da607be1 (diff)
sparc: Use GFP_ATOMIC in ldc_alloc_exp_dring() as it can be called in softirq context
Upstream commit 671d773297969bebb1732e1cdc1ec03aa53c6be2 Since it is possible for vnet_event_napi to end up doing vnet_control_pkt_engine -> ... -> vnet_send_attr -> vnet_port_alloc_tx_ring -> ldc_alloc_exp_dring -> kzalloc() (i.e., in softirq context), kzalloc() should be called with GFP_ATOMIC from ldc_alloc_exp_dring. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--arch/sparc/kernel/ldc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index 27bb55485472..7ef28625c199 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -2307,7 +2307,7 @@ void *ldc_alloc_exp_dring(struct ldc_channel *lp, unsigned int len,
if (len & (8UL - 1))
return ERR_PTR(-EINVAL);
- buf = kzalloc(len, GFP_KERNEL);
+ buf = kzalloc(len, GFP_ATOMIC);
if (!buf)
return ERR_PTR(-ENOMEM);