svn commit: r279996 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Steven Hartland]

Author: smh
Date: Sat Mar 14 17:35:04 2015
New Revision: 279996
URL: https://svnweb.freebsd.org/changeset/base/279996

Log:
  Allow zvol_geom_worker to process BIO_DELETE's
  
  If zvol_geom_start is called with a BIO_DELETE from a thread which can
  sleep it queues it for later processing by the zvol_geom_worker. The
  zvol_geom_worker didn't have a delete case so would simply loose the bio
  hence preventing the original caller from every completing. In addition
  an other unknown types would suffer the same fate.
  
  Allow zvol_geom_worker to process BIO_DELETE's via zvol_strategy and
  return unsupported for all unknown bio types.
  
  MFC after:	2 weeks
  Sponsored by:	Multiplay

Modified:
  head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c

Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c	Sat Mar 14 17:25:17 2015	(r279995)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c	Sat Mar 14 17:35:04 2015	(r279996)
@@ -2775,8 +2775,12 @@ zvol_geom_worker(void *arg)
 			break;
 		case BIO_READ:
 		case BIO_WRITE:
+		case BIO_DELETE:
 			zvol_strategy(bp);
 			break;
+		default:
+			g_io_deliver(bp, EOPNOTSUPP);
+			break;
 		}
 	}
 }