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Commit 269fd2a6 authored by goggin, edward's avatar goggin, edward Committed by Linus Torvalds
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[PATCH] device-mapper: Trigger an event when a table is deleted 



If anything is waiting on a device's table when the device is removed, we
must first wake it up so it will release its reference.  Otherwise the
table's reference count will not drop to zero and the table will not get
removed.

Signed-Off-By: default avatarAlasdair G Kergon <agk@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 0f7347c2

drivers/md/dm-ioctl.c

+9 −0
Original line number Diff line number Diff line
@@ -230,11 +230,20 @@ static int dm_hash_insert(const char *name, const char *uuid, struct mapped_devi 


static void __hash_remove(struct hash_cell *hc)

{

	struct dm_table *table;



	/* remove from the dev hash */

	list_del(&hc->uuid_list);

	list_del(&hc->name_list);

	unregister_with_devfs(hc);

	dm_set_mdptr(hc->md, NULL);



	table = dm_get_table(hc->md);

	if (table) {

		dm_table_event(table);

		dm_table_put(table);

	}



	dm_put(hc->md);

	if (hc->new_map)

		dm_table_put(hc->new_map);