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block: Suppress uevent for hidden device when removed

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[ Upstream commit 9ec491447b90ad6a4056a9656b13f0b3a1e83043 ]

register_disk() suppress uevents for devices with the GENHD_FL_HIDDEN
but enables uevents at the end again in order to announce disk after
possible partitions are created.

When the device is removed the uevents are still on and user land sees
'remove' messages for devices which were never 'add'ed to the system.

  KERNEL[95481.571887] remove   /devices/virtual/nvme-fabrics/ctl/nvme5/nvme0c5n1 (block)

Let's suppress the uevents for GENHD_FL_HIDDEN by not enabling the
uevents at all.

Signed-off-by: Daniel Wagner <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Martin Wilck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Daniel Wagner 2021-03-11 16:19:17 +01:00 • committed by Greg Kroah-Hartman
commit 37732ea82e
1 changed files with 1 additions and 3 deletions
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4
block/genhd.c
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@ -637,10 +637,8 @@ static void register_disk(struct device *parent, struct gendisk *disk,
disk->part0.holder_dir = kobject_create_and_add("holders", &ddev->kobj);
disk->slave_dir = kobject_create_and_add("slaves", &ddev->kobj);
if (disk->flags & GENHD_FL_HIDDEN) {
dev_set_uevent_suppress(ddev, 0);
if (disk->flags & GENHD_FL_HIDDEN)
return;
}
/* No minors to use for partitions */
if (!disk_part_scan_enabled(disk))