* [obsolete] sched-wait-assert-the-wait_queue_head-lock-is-held-in-__wake_up_common.patch removed from -mm tree
@ 2017-12-14 1:02 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2017-12-14 1:02 UTC (permalink / raw)
To: hch, mingo, peterz, viro, mm-commits
The patch titled
Subject: sched/wait: assert the wait_queue_head lock is held in __wake_up_common
has been removed from the -mm tree. Its filename was
sched-wait-assert-the-wait_queue_head-lock-is-held-in-__wake_up_common.patch
This patch was dropped because it is obsolete
------------------------------------------------------
From: Christoph Hellwig <hch@lst.de>
Subject: sched/wait: assert the wait_queue_head lock is held in __wake_up_common
Better ensure we actually hold the lock using lockdep than just commenting
on it. Due to the various exported _locked interfaces it is far too easy
to get the locking wrong.
Link: http://lkml.kernel.org/r/20171130142037.19339-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
kernel/sched/wait.c | 2 ++
1 file changed, 2 insertions(+)
diff -puN kernel/sched/wait.c~sched-wait-assert-the-wait_queue_head-lock-is-held-in-__wake_up_common kernel/sched/wait.c
--- a/kernel/sched/wait.c~sched-wait-assert-the-wait_queue_head-lock-is-held-in-__wake_up_common
+++ a/kernel/sched/wait.c
@@ -76,6 +76,8 @@ static int __wake_up_common(struct wait_
wait_queue_entry_t *curr, *next;
int cnt = 0;
+ lockdep_assert_held(&wq_head->lock);
+
if (bookmark && (bookmark->flags & WQ_FLAG_BOOKMARK)) {
curr = list_next_entry(bookmark, entry);
_
Patches currently in -mm which might be from hch@lst.de are
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2017-12-14 1:02 [obsolete] sched-wait-assert-the-wait_queue_head-lock-is-held-in-__wake_up_common.patch removed from -mm tree akpm
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