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Message-Id: <1070323011020.5958@suse.de>
Date: Fri, 23 Mar 2007 12:10:20 +1100
From: NeilBrown <neilb@...e.de>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 003 of 3] md: Convert compile time warnings into runtime warnings.
... still not sure why we need this ....
Signed-off-by: Neil Brown <neilb@...e.de>
### Diffstat output
./drivers/md/md.c | 41 +++++++++++++++++++++++++++++++----------
./drivers/md/raid5.c | 12 ++++++++++--
2 files changed, 41 insertions(+), 12 deletions(-)
diff .prev/drivers/md/md.c ./drivers/md/md.c
--- .prev/drivers/md/md.c 2007-03-23 11:13:41.000000000 +1100
+++ ./drivers/md/md.c 2007-03-23 12:06:34.000000000 +1100
@@ -1319,6 +1319,7 @@ static int bind_rdev_to_array(mdk_rdev_t
char b[BDEVNAME_SIZE];
struct kobject *ko;
char *s;
+ int err;
if (rdev->mddev) {
MD_BUG();
@@ -1353,20 +1354,29 @@ static int bind_rdev_to_array(mdk_rdev_t
while ( (s=strchr(rdev->kobj.k_name, '/')) != NULL)
*s = '!';
- list_add(&rdev->same_set, &mddev->disks);
rdev->mddev = mddev;
printk(KERN_INFO "md: bind<%s>\n", b);
rdev->kobj.parent = &mddev->kobj;
- kobject_add(&rdev->kobj);
+ if ((err = kobject_add(&rdev->kobj)))
+ goto fail;
if (rdev->bdev->bd_part)
ko = &rdev->bdev->bd_part->kobj;
else
ko = &rdev->bdev->bd_disk->kobj;
- sysfs_create_link(&rdev->kobj, ko, "block");
+ if ((err = sysfs_create_link(&rdev->kobj, ko, "block"))) {
+ kobject_del(&rdev->kobj);
+ goto fail;
+ }
+ list_add(&rdev->same_set, &mddev->disks);
bd_claim_by_disk(rdev->bdev, rdev, mddev->gendisk);
return 0;
+
+ fail:
+ printk(KERN_WARNING "md: failed to register dev-%s for %s\n",
+ b, mdname(mddev));
+ return err;
}
static void unbind_rdev_from_array(mdk_rdev_t * rdev)
@@ -2966,7 +2976,9 @@ static struct kobject *md_probe(dev_t de
mddev->kobj.k_name = NULL;
snprintf(mddev->kobj.name, KOBJ_NAME_LEN, "%s", "md");
mddev->kobj.ktype = &md_ktype;
- kobject_register(&mddev->kobj);
+ if (kobject_register(&mddev->kobj))
+ printk(KERN_WARNING "md: cannot register %s/md - name in use\n",
+ disk->disk_name);
return NULL;
}
@@ -3144,9 +3156,12 @@ static int do_md_run(mddev_t * mddev)
bitmap_destroy(mddev);
return err;
}
- if (mddev->pers->sync_request)
- sysfs_create_group(&mddev->kobj, &md_redundancy_group);
- else if (mddev->ro == 2) /* auto-readonly not meaningful */
+ if (mddev->pers->sync_request) {
+ if (sysfs_create_group(&mddev->kobj, &md_redundancy_group))
+ printk(KERN_WARNING
+ "md: cannot register extra attributes for %s\n",
+ mdname(mddev));
+ } else if (mddev->ro == 2) /* auto-readonly not meaningful */
mddev->ro = 0;
atomic_set(&mddev->writes_pending,0);
@@ -3160,7 +3175,9 @@ static int do_md_run(mddev_t * mddev)
if (rdev->raid_disk >= 0) {
char nm[20];
sprintf(nm, "rd%d", rdev->raid_disk);
- sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
+ if (sysfs_create_link(&mddev->kobj, &rdev->kobj, nm))
+ printk("md: cannot register %s for %s\n",
+ nm, mdname(mddev));
}
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
@@ -5388,8 +5405,12 @@ static int remove_and_add_spares(mddev_t
if (mddev->pers->hot_add_disk(mddev,rdev)) {
char nm[20];
sprintf(nm, "rd%d", rdev->raid_disk);
- sysfs_create_link(&mddev->kobj,
- &rdev->kobj, nm);
+ if (sysfs_create_link(&mddev->kobj,
+ &rdev->kobj, nm))
+ printk(KERN_WARNING
+ "md: cannot register "
+ "%s for %s\n",
+ nm, mdname(mddev));
spares++;
md_new_event(mddev);
} else
diff .prev/drivers/md/raid5.c ./drivers/md/raid5.c
--- .prev/drivers/md/raid5.c 2007-03-23 11:13:41.000000000 +1100
+++ ./drivers/md/raid5.c 2007-03-23 12:06:00.000000000 +1100
@@ -4265,7 +4265,10 @@ static int run(mddev_t *mddev)
}
/* Ok, everything is just fine now */
- sysfs_create_group(&mddev->kobj, &raid5_attrs_group);
+ if (sysfs_create_group(&mddev->kobj, &raid5_attrs_group))
+ printk(KERN_WARNING
+ "raid5: failed to create sysfs attributes for %s\n",
+ mdname(mddev));
mddev->queue->unplug_fn = raid5_unplug_device;
mddev->queue->issue_flush_fn = raid5_issue_flush;
@@ -4574,7 +4577,12 @@ static int raid5_start_reshape(mddev_t *
added_devices++;
rdev->recovery_offset = 0;
sprintf(nm, "rd%d", rdev->raid_disk);
- sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
+ if (sysfs_create_link(&mddev->kobj,
+ &rdev->kobj, nm))
+ printk(KERN_WARNING
+ "raid5: failed to create "
+ " link %s for %s\n",
+ nm, mdname(mddev));
} else
break;
}
-
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