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Add reporting of GEOM::candelete BIO_GETATTR for md(4) and geom_disk(4).

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Non-zero value of attribute means that device supports BIO_DELETE.

Suggested and reviewed by:	pjd
Tested by:	pho
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2010-12-29 12:11:07 +00:00
parent c44d423ed8
commit d91e813c7b
2 changed files with 8 additions and 3 deletions
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5
sys/dev/md/md.c
View file

@ -717,11 +717,12 @@ md_kthread(void *arg)
}
mtx_unlock(&sc->queue_mtx);
if (bp->bio_cmd == BIO_GETATTR) {
if (sc->fwsectors && sc->fwheads &&
if ((sc->fwsectors && sc->fwheads &&
(g_handleattr_int(bp, "GEOM::fwsectors",
sc->fwsectors) ||
g_handleattr_int(bp, "GEOM::fwheads",
sc->fwheads)))
sc->fwheads))) ||
g_handleattr_int(bp, "GEOM::candelete", 1))
error = -1;
else
error = EOPNOTSUPP;

6
sys/geom/geom_disk.c
View file

@ -297,7 +297,11 @@ g_disk_start(struct bio *bp)
} while (bp2 != NULL);
break;
case BIO_GETATTR:
if (g_handleattr_int(bp, "GEOM::fwsectors", dp->d_fwsectors))
if (g_handleattr_int(bp, "GEOM::candelete",
(dp->d_flags & DISKFLAG_CANDELETE) != 0))
break;
else if (g_handleattr_int(bp, "GEOM::fwsectors",
dp->d_fwsectors))
break;
else if (g_handleattr_int(bp, "GEOM::fwheads", dp->d_fwheads))
break;