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sparc: Use GFP_ATOMIC in ldc_alloc_exp_dring() as it can be called in softirq context

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Upstream commit 671d773297

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>
This commit is contained in:
Sowmini Varadhan
2015-04-21 10:30:41 -04:00
committed by Greg Kroah-Hartman
parent c484654239
commit dc911b3125
1 changed files with 1 additions and 1 deletions
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2
arch/sparc/kernel/ldc.c
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@@ -2306,7 +2306,7 @@ 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);