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Use g_handleattr() to reply to GEOM::candelete queries.

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g_handleattr() fills out bp->bio_completed; otherwise, g_getattr()
returns an error in response to the query.  This caused BIO_DELETE
support to not be propagated through stacked configurations, e.g.,
a gconcat of gmirror volumes would not handle BIO_DELETE even when
the gmirrors do.  g_io_getattr() was not affected by the problem.

PR:		232676
Reported and tested by:	noah.bergbauer@tum.de
MFC after:	1 week
This commit is contained in:
Mark Johnston 2019-01-02 15:52:16 +00:00
parent 9bfc7fa41d
commit 438622af06
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=342687
3 changed files with 11 additions and 20 deletions
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12
sys/geom/concat/g_concat.c
View File

@ -210,20 +210,16 @@ g_concat_candelete(struct bio *bp)
{
struct g_concat_softc *sc;
struct g_concat_disk *disk;
int i, *val;
val = (int *)bp->bio_data;
*val = 0;
int i, val;
sc = bp->bio_to->geom->softc;
for (i = 0; i < sc->sc_ndisks; i++) {
disk = &sc->sc_disks[i];
if (!disk->d_removed && disk->d_candelete) {
*val = 1;
if (!disk->d_removed && disk->d_candelete)
break;
}
}
g_io_deliver(bp, 0);
val = i < sc->sc_ndisks;
g_handleattr(bp, "GEOM::candelete", &val, sizeof(val));
}
static void

7
sys/geom/mirror/g_mirror.c
View File

@ -1086,16 +1086,15 @@ g_mirror_candelete(struct bio *bp)
{
struct g_mirror_softc *sc;
struct g_mirror_disk *disk;
int *val;
int val;
sc = bp->bio_to->private;
LIST_FOREACH(disk, &sc->sc_disks, d_next) {
if (disk->d_flags & G_MIRROR_DISK_FLAG_CANDELETE)
break;
}
val = (int *)bp->bio_data;
*val = (disk != NULL);
g_io_deliver(bp, 0);
val = disk != NULL;
g_handleattr(bp, "GEOM::candelete", &val, sizeof(val));
}
static void

12
sys/geom/raid/g_raid.c
View File

@ -1075,23 +1075,19 @@ g_raid_candelete(struct g_raid_softc *sc, struct bio *bp)
struct g_provider *pp;
struct g_raid_volume *vol;
struct g_raid_subdisk *sd;
int *val;
int i;
int i, val;
val = (int *)bp->bio_data;
pp = bp->bio_to;
vol = pp->private;
*val = 0;
for (i = 0; i < vol->v_disks_count; i++) {
sd = &vol->v_subdisks[i];
if (sd->sd_state == G_RAID_SUBDISK_S_NONE)
continue;
if (sd->sd_disk->d_candelete) {
*val = 1;
if (sd->sd_disk->d_candelete)
break;
}
}
g_io_deliver(bp, 0);
val = i < vol->v_disks_count;
g_handleattr(bp, "GEOM::candelete", &val, sizeof(val));
}
static void