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https://github.com/torvalds/linux
13 June 2022, 11:31:42 UTC
Revision fe1bce9e2107ba3a8faffe572483b6974201a0e6 authored by Davidlohr Bueso on 21 April 2016, 03:09:24 UTC, committed by Thomas Gleixner on 21 April 2016, 09:06:09 UTC 
futex: Acknowledge a new waiter in counter before plist
 
Otherwise an incoming waker on the dest hash bucket can miss
the waiter adding itself to the plist during the lockless
check optimization (small window but still the correct way
of doing this); similarly to the decrement counterpart.

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: bigeasy@linutronix.de
Cc: dvhart@infradead.org
Cc: stable@kernel.org
Link: http://lkml.kernel.org/r/1461208164-29150-1-git-send-email-dave@stgolabs.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
1 parent 89e9e66
History
Tip revision: fe1bce9e2107ba3a8faffe572483b6974201a0e6 authored by Davidlohr Bueso on 21 April 2016, 03:09:24 UTC
futex: Acknowledge a new waiter in counter before plist
Tip revision: fe1bce9
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.get_maintainer.ignore -rw-r--r-- 31 bytes
.gitignore -rw-r--r-- 1.2 KB
.mailmap -rw-r--r-- 5.5 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 95.4 KB
Kbuild -rw-r--r-- 2.6 KB
Kconfig -rw-r--r-- 252 bytes
MAINTAINERS -rw-r--r-- 344.2 KB
Makefile -rw-r--r-- 55.0 KB
README -rw-r--r-- 18.1 KB
REPORTING-BUGS -rw-r--r-- 7.3 KB

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