From 81f1777a55e8c631b61e5fa5980fb7a2004287af Mon Sep 17 00:00:00 2001 From: "goggin, edward" Date: Fri, 6 Jan 2006 00:20:01 -0800 Subject: [PATCH] [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/md/dm-ioctl.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index 07d44e19536e..3e327db57310 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; -- 2.20.1