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D38114.diff
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D38114.diff

diff --git a/sys/dev/md/md.c b/sys/dev/md/md.c
--- a/sys/dev/md/md.c
+++ b/sys/dev/md/md.c
@@ -917,11 +917,13 @@
*/
if (bp->bio_cmd == BIO_FLUSH) {
- (void) vn_start_write(vp, &mp, V_WAIT);
- vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
- error = VOP_FSYNC(vp, MNT_WAIT, td);
- VOP_UNLOCK(vp);
- vn_finished_write(mp);
+ do {
+ (void) vn_start_write(vp, &mp, V_WAIT);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
+ error = VOP_FSYNC(vp, MNT_WAIT, td);
+ VOP_UNLOCK(vp);
+ vn_finished_write(mp);
+ } while (error == ERELOOKUP);
return (error);
} else if (bp->bio_cmd == BIO_DELETE) {
error = vn_deallocate(vp, &off, &len, 0,
diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c
--- a/sys/vm/vm_object.c
+++ b/sys/vm/vm_object.c
@@ -1233,8 +1233,23 @@
res = vm_object_page_clean(object, offset, offset + size,
flags);
VM_OBJECT_WUNLOCK(object);
- if (fsync_after)
- error = VOP_FSYNC(vp, MNT_WAIT, curthread);
+ if (fsync_after) {
+ for (;;) {
+ error = VOP_FSYNC(vp, MNT_WAIT, curthread);
+ if (error != ERELOOKUP)
+ break;
+
+ /*
+ * Allow SU/bufdaemon to handle more
+ * dependencies in the meantime.
+ */
+ VOP_UNLOCK(vp);
+ vn_finished_write(mp);
+
+ (void)vn_start_write(vp, &mp, V_WAIT);
+ vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
+ }
+ }
VOP_UNLOCK(vp);
vn_finished_write(mp);
if (error != 0)

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