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authorLinus Torvalds <torvalds@linux-foundation.org>2018-02-15 09:05:26 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-15 09:05:26 -0800
commite9e3b3002fc3c9ef665628bd85a8c1b5a3424f23 (patch)
treea3f867a79cbafb9b5144dad4339e007780c60330 /include
parente525de3ab04621d227330aa82cd4073c0b0f3579 (diff)
parent2dd6fd2e999774041397f2a7da2e1d30b3a27c3a (diff)
downloadlinux-e9e3b3002fc3c9ef665628bd85a8c1b5a3424f23.tar.bz2
Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar: "This contains two qspinlock fixes and three documentation and comment fixes" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/semaphore: Update the file path in documentation locking/atomic/bitops: Document and clarify ordering semantics for failed test_and_{}_bit() locking/qspinlock: Ensure node->count is updated before initialising node locking/qspinlock: Ensure node is initialised before updating prev->next Documentation/locking/mutex-design: Update to reflect latest changes
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/bitops/lock.h3
-rw-r--r--include/linux/semaphore.h2
2 files changed, 3 insertions, 2 deletions
diff --git a/include/asm-generic/bitops/lock.h b/include/asm-generic/bitops/lock.h
index bc397573c43a..67ab280ad134 100644
--- a/include/asm-generic/bitops/lock.h
+++ b/include/asm-generic/bitops/lock.h
@@ -7,7 +7,8 @@
* @nr: Bit to set
* @addr: Address to count from
*
- * This operation is atomic and provides acquire barrier semantics.
+ * This operation is atomic and provides acquire barrier semantics if
+ * the returned value is 0.
* It can be used to implement bit locks.
*/
#define test_and_set_bit_lock(nr, addr) test_and_set_bit(nr, addr)
diff --git a/include/linux/semaphore.h b/include/linux/semaphore.h
index dc368b8ce215..11c86fbfeb98 100644
--- a/include/linux/semaphore.h
+++ b/include/linux/semaphore.h
@@ -4,7 +4,7 @@
*
* Distributed under the terms of the GNU GPL, version 2
*
- * Please see kernel/semaphore.c for documentation of these functions
+ * Please see kernel/locking/semaphore.c for documentation of these functions
*/
#ifndef __LINUX_SEMAPHORE_H
#define __LINUX_SEMAPHORE_H