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authorgoggin, edward <egoggin@emc.com>2006-01-06 00:20:01 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:34:00 -0800
commit81f1777a55e8c631b61e5fa5980fb7a2004287af (patch)
treee63c43ce8951e316f21a85554d867dd25a2ceb6c /drivers/md/dm-ioctl.c
parentd229a9589ff3b988d3f999cdcfa350f97a372673 (diff)
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[PATCH] device-mapper ioctl: event on rename
After changing the name of a mapped device, trigger a dm event. (For userspace multipath tools.) 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/dm-ioctl.c')
-rw-r--r--drivers/md/dm-ioctl.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 07d44e19536..3e327db5731 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -270,6 +270,7 @@ static int dm_hash_rename(const char *old, const char *new)
{
char *new_name, *old_name;
struct hash_cell *hc;
+ struct dm_table *table;
/*
* duplicate new.
@@ -317,6 +318,15 @@ static int dm_hash_rename(const char *old, const char *new)
/* rename the device node in devfs */
register_with_devfs(hc);
+ /*
+ * Wake up any dm event waiters.
+ */
+ table = dm_get_table(hc->md);
+ if (table) {
+ dm_table_event(table);
+ dm_table_put(table);
+ }
+
up_write(&_hash_lock);
kfree(old_name);
return 0;