diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2015-07-21 15:40:36 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-07-31 10:38:07 +0200 |
| commit | 2a742cedcf13572999436676cbe36c3a9b733b0f (patch) | |
| tree | bb614fd0d0204a48f9ff739bced7cb45567f9fdb /block/blk-throttle.c | |
| parent | 704bde3cc26a4cb34386c164107b59e09745a022 (diff) | |
uprobes: Fix the waitqueue_active() check in xol_free_insn_slot()
The xol_free_insn_slot()->waitqueue_active() check is buggy. We
need mb() after we set the conditon for wait_event(), or
xol_take_insn_slot() can miss the wakeup.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Pratyush Anand <panand@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20150721134036.GA4799@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'block/blk-throttle.c')
0 files changed, 0 insertions, 0 deletions