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authorgoggin, edward <egoggin@emc.com>2005-09-28 00:45:44 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-28 10:46:42 -0400
commit269fd2a6f84828fd96218d164dace8c413fa5c03 (patch)
tree20496da0d4e5c5a6096a0e690b5b603ace6f7baf /drivers/md
parent0f7347c20c410c300be0db4c132945fd02e54110 (diff)
[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: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm-ioctl.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 200a0688f717..54ec737195e0 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -230,11 +230,20 @@ static int dm_hash_insert(const char *name, const char *uuid, struct mapped_devi
230 230
231static void __hash_remove(struct hash_cell *hc) 231static void __hash_remove(struct hash_cell *hc)
232{ 232{
233 struct dm_table *table;
234
233 /* remove from the dev hash */ 235 /* remove from the dev hash */
234 list_del(&hc->uuid_list); 236 list_del(&hc->uuid_list);
235 list_del(&hc->name_list); 237 list_del(&hc->name_list);
236 unregister_with_devfs(hc); 238 unregister_with_devfs(hc);
237 dm_set_mdptr(hc->md, NULL); 239 dm_set_mdptr(hc->md, NULL);
240
241 table = dm_get_table(hc->md);
242 if (table) {
243 dm_table_event(table);
244 dm_table_put(table);
245 }
246
238 dm_put(hc->md); 247 dm_put(hc->md);
239 if (hc->new_map) 248 if (hc->new_map)
240 dm_table_put(hc->new_map); 249 dm_table_put(hc->new_map);