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Commit 81f1777a authored by goggin, edward's avatar goggin, edward Committed by Linus Torvalds
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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: 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 d229a958

drivers/md/dm-ioctl.c

+10 −0
Original line number Diff line number Diff line
@@ -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;