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authorSeongJae Park <sj38.park@gmail.com>2018-05-15 00:55:32 +0200
committerIngo Molnar <mingo@kernel.org>2018-05-15 08:11:14 +0200
commitfc7bdc90249b216051d06496577c306327f2e3f5 (patch)
treebedf76db204898d18d99b0e4eef7a7143821eaa4 /Documentation/core-api
parentlocking/memory-barriers.txt/kokr: Update Korean translation to de-emphasize s... (diff)
downloadlinux-fc7bdc90249b216051d06496577c306327f2e3f5.tar.xz
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locking/Documentation: Fix incorrect example code
- Remove a stale line of code - Fix the condition of the READ_ONCE() example Signed-off-by: SeongJae Park <sj38.park@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: akiyks@gmail.com Cc: boqun.feng@gmail.com Cc: dhowells@redhat.com Cc: j.alglave@ucl.ac.uk Cc: linux-arch@vger.kernel.org Cc: luc.maranget@inria.fr Cc: npiggin@gmail.com Cc: parri.andrea@gmail.com Link: http://lkml.kernel.org/r/1526338533-6044-7-git-send-email-paulmck@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/core-api')
-rw-r--r--Documentation/core-api/atomic_ops.rst3
1 files changed, 1 insertions, 2 deletions
diff --git a/Documentation/core-api/atomic_ops.rst b/Documentation/core-api/atomic_ops.rst
index fce929144ccd..4ea4af71e68a 100644
--- a/Documentation/core-api/atomic_ops.rst
+++ b/Documentation/core-api/atomic_ops.rst
@@ -111,7 +111,6 @@ If the compiler can prove that do_something() does not store to the
variable a, then the compiler is within its rights transforming this to
the following::
- tmp = a;
if (a > 0)
for (;;)
do_something();
@@ -119,7 +118,7 @@ the following::
If you don't want the compiler to do this (and you probably don't), then
you should use something like the following::
- while (READ_ONCE(a) < 0)
+ while (READ_ONCE(a) > 0)
do_something();
Alternatively, you could place a barrier() call in the loop.