tree fd3baa0d66b14a6d5adc4f09088fa15dfcb5b7ab
parent f12b12a8aecfcafcf2f9df1c1658d2484959dfda
author Rusty Russell <rusty@rustcorp.com.au> 1233992756 +1030
committer Linus Torvalds <torvalds@linux-foundation.org> 1234024381 -0800

module: remove over-zealous check in __module_get()

Impact: fix spurious BUG_ON() triggered under load

module_refcount() isn't reliable outside stop_machine(), as demonstrated
by Karsten Keil <kkeil@suse.de>, networking can trigger it under load
(an inc on one cpu and dec on another while module_refcount() is tallying
 can give false results, for example).

Almost noone should be using __module_get, but that's another issue.

Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>