Author: pjd
Date: Tue Oct 25 14:07:17 2011
New Revision: 226737
URL: http://svn.freebsd.org/changeset/base/226737
Log:
Allow upper layers to discover than BIO_DELETE and/or BIO_FLUSH is not
supported by returning EOPNOTSUPP instead of 0 or ENODEV.
MFC after: 3 days
Modified:
head/sys/geom/geom_disk.c
Modified: head/sys/geom/geom_disk.c
==============================================================================
--- head/sys/geom/geom_disk.c Tue Oct 25 14:05:39 2011 (r226736)
+++ head/sys/geom/geom_disk.c Tue Oct 25 14:07:17 2011 (r226737)
@@ -305,7 +305,7 @@ g_disk_start(struct bio *bp)
switch(bp->bio_cmd) {
case BIO_DELETE:
if (!(dp->d_flags & DISKFLAG_CANDELETE)) {
- error = 0;
+ error = EOPNOTSUPP;
break;
}
/* fall-through */
@@ -394,8 +394,8 @@ g_disk_start(struct bio *bp)
g_trace(G_T_TOPOLOGY, "g_disk_flushcache(%s)",
bp->bio_to->name);
if (!(dp->d_flags & DISKFLAG_CANFLUSHCACHE)) {
- g_io_deliver(bp, ENODEV);
- return;
+ error = EOPNOTSUPP;
+ break;
}
bp2 = g_clone_bio(bp);
if (bp2 == NULL) {
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