diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2014-07-29 17:23:25 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2014-07-31 16:22:52 -0400 |
| commit | 73806c8832b3438ef0439603dab1f3cfc61cb6cd (patch) | |
| tree | 8d583ca98b5c68ab0fc89802295ab81bbaf0e590 /net/sunrpc/xprtrdma/xprt_rdma.h | |
| parent | 5fc83f470d8ada25927701512cf94a53dab6c4c8 (diff) | |
xprtrdma: Protect ia->ri_id when unmapping/invalidating MRs
Ensure ia->ri_id remains valid while invoking dma_unmap_page() or
posting LOCAL_INV during a transport reconnect. Otherwise,
ia->ri_id->device or ia->ri_id->qp is NULL, which triggers a panic.
BugLink: https://bugzilla.linux-nfs.org/show_bug.cgi?id=259
Fixes: ec62f40 'xprtrdma: Ensure ia->ri_id->qp is not NULL when reconnecting'
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Tested-by: Shirley Ma <shirley.ma@oracle.com>
Tested-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/xprt_rdma.h')
| -rw-r--r-- | net/sunrpc/xprtrdma/xprt_rdma.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index 89e7cd479705..97ca516ec619 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -59,6 +59,7 @@ * Interface Adapter -- one per transport instance */ struct rpcrdma_ia { + rwlock_t ri_qplock; struct rdma_cm_id *ri_id; struct ib_pd *ri_pd; struct ib_mr *ri_bind_mem; |