From: madhuparnabhowmik04@gmail.com
To: dennis.dalessandro@intel.com, mike.marciniszyn@intel.com,
dledford@redhat.com, paulmck@kernel.org
Cc: rcu@vger.kernel.org, joel@joelfernandes.org, frextrite@gmail.com,
linux-kernel-mentees@lists.linuxfoundation.org,
linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
Madhuparna Bhowmik <madhuparnabhowmik04@gmail.com>
Subject: [PATCH 3/3] infiniband: sw: rdmavt: mcast.c: Use built-in RCU list checking
Date: Tue, 7 Jan 2020 23:05:10 +0530 [thread overview]
Message-ID: <20200107173510.20320-3-madhuparnabhowmik04@gmail.com> (raw)
In-Reply-To: <20200107173510.20320-1-madhuparnabhowmik04@gmail.com>
From: Madhuparna Bhowmik <madhuparnabhowmik04@gmail.com>
Use built-in RCU and lock-checking for list_for_each_entry_rcu()
by passing the cond argument.
Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik04@gmail.com>
---
drivers/infiniband/sw/rdmavt/mcast.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/sw/rdmavt/mcast.c b/drivers/infiniband/sw/rdmavt/mcast.c
index dd11c6fcd060..5fce375f22f4 100644
--- a/drivers/infiniband/sw/rdmavt/mcast.c
+++ b/drivers/infiniband/sw/rdmavt/mcast.c
@@ -224,7 +224,8 @@ static int rvt_mcast_add(struct rvt_dev_info *rdi, struct rvt_ibport *ibp,
}
/* Search the QP list to see if this is already there. */
- list_for_each_entry_rcu(p, &tmcast->qp_list, list) {
+ list_for_each_entry_rcu(p, &tmcast->qp_list, list
+ lock_is_held(&(ibp->lock).dep_map)) {
if (p->qp == mqp->qp) {
ret = ESRCH;
goto bail;
--
2.17.1
next prev parent reply other threads:[~2020-01-07 17:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 17:35 [PATCH 1/3] infiniband: hw: hfi1: verbs.c: Use built-in RCU list checking madhuparnabhowmik04
2020-01-07 17:35 ` [PATCH 2/3] infiniband: hw: qib: qib_verbs: " madhuparnabhowmik04
2020-01-07 17:35 ` madhuparnabhowmik04 [this message]
2020-01-07 18:26 ` [PATCH 1/3] infiniband: hw: hfi1: verbs.c: " Jason Gunthorpe
2020-01-07 19:31 [PATCH 3/3] infiniband: sw: rdmavt: mcast.c: " madhuparnabhowmik04
2020-01-14 16:25 madhuparnabhowmik04
2020-02-14 17:26 ` Dennis Dalessandro
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