xnu-3247.10.11.tar.gz

[apple/xnu.git] / bsd / nfs / nfs_bio.c

diff --git a/bsd/nfs/nfs_bio.c b/bsd/nfs/nfs_bio.c
index a58e5d866ab4899add3726b19fa39f0b408e2420..926cc0ad7777cea9fc4983a7a181115e7e434771 100644 (file)
--- a/bsd/nfs/nfs_bio.c
+++ b/bsd/nfs/nfs_bio.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2014 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2015 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -3835,11 +3835,17 @@ nfs_asyncio_resend(struct nfsreq *req)
 
        if (nfs_mount_gone(nmp))
                return;
+
        nfs_gss_clnt_rpcdone(req);
        lck_mtx_lock(&nmp->nm_lock);
        if (!(req->r_flags & R_RESENDQ)) {
                TAILQ_INSERT_TAIL(&nmp->nm_resendq, req, r_rchain);
                req->r_flags |= R_RESENDQ;
+               /*
+                * We take a reference on this request so that it can't be
+                * destroyed while a resend is queued or in progress.
+                */
+               nfs_request_ref(req, 1);
        }
        nfs_mount_sock_thread_wake(nmp);
        lck_mtx_unlock(&nmp->nm_lock);