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authorAndy Grover <andy.grover@oracle.com>2010-03-30 01:50:54 +0200
committerAndy Grover <andy.grover@oracle.com>2010-09-09 03:12:18 +0200
commitcf4b7389ee812817deeb11da1422004e01b50646 (patch)
tree318d1e1da095880a19fc41992a3b57e9190e3b23 /net/rds
parentRDS: Use NOWAIT in message_map_pages() (diff)
downloadlinux-cf4b7389ee812817deeb11da1422004e01b50646.tar.xz
linux-cf4b7389ee812817deeb11da1422004e01b50646.zip
RDS: Fix locking in send on m_rs_lock
Do not nest m_rs_lock under c_lock Disable interrupts in {rdma,atomic}_send_complete Signed-off-by: Andy Grover <andy.grover@oracle.com>
Diffstat (limited to 'net/rds')
-rw-r--r--net/rds/send.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/rds/send.c b/net/rds/send.c
index 15b715a85fd5..ecda3e6c432c 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -468,8 +468,9 @@ void rds_atomic_send_complete(struct rds_message *rm, int status)
struct rds_sock *rs = NULL;
struct rm_atomic_op *ao;
struct rds_notifier *notifier;
+ unsigned long flags;
- spin_lock(&rm->m_rs_lock);
+ spin_lock_irqsave(&rm->m_rs_lock, flags);
ao = &rm->atomic;
if (test_bit(RDS_MSG_ON_SOCK, &rm->m_flags)
@@ -486,7 +487,7 @@ void rds_atomic_send_complete(struct rds_message *rm, int status)
ao->op_notifier = NULL;
}
- spin_unlock(&rm->m_rs_lock);
+ spin_unlock_irqrestore(&rm->m_rs_lock, flags);
if (rs) {
rds_wake_sk_sleep(rs);