macos: reset next vcache pointer after reacquiring xvcache

dropping the xvcache lock means that things can change out from under
us. in case they do, reset the next vcache pointer before looping

Change-Id: I71be39a2f2986804257c50b1d5b7d557b58a3573
Reviewed-on: http://gerrit.openafs.org/5184
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>

diff --git a/src/afs/DARWIN/osi_misc.c b/src/afs/DARWIN/osi_misc.c
index c602fb10c2b92bce15a3dabef8e0cc8b3e836b53..03792d9c8c55c9394911afdda783fd930af91fb2 100644 (file)
--- a/src/afs/DARWIN/osi_misc.c
+++ b/src/afs/DARWIN/osi_misc.c
@@ -90,6 +90,7 @@ loop:
                ReleaseWriteLock(&tvc->lock);
            }
            ObtainReadLock(&afs_xvcache);
+           uq = QPrev(tq);
            /* our tvc ptr is still good until now */
            AFS_FAST_RELE(tvc);
        }