[PATCH] seqlock: fix raw_read_seqcount_latch()

From	Alexey Dobriyan <adobriyan@gmail.com>
Newsgroups	linux.kernel
Subject	[PATCH] seqlock: fix raw_read_seqcount_latch()
Date	2016-05-21 22:20 +0200
Message-ID	<rBlxo-84d-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Show all headers | View raw

lockless_dereference() is supposed to take pointer not integer.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

 include/linux/seqlock.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -277,7 +277,7 @@ static inline void raw_write_seqcount_barrier(seqcount_t *s)
 
 static inline int raw_read_seqcount_latch(seqcount_t *s)
 {
-	return lockless_dereference(s->sequence);
+	return lockless_dereference(s)->sequence;
 }
 
 /**
@@ -331,7 +331,7 @@ static inline int raw_read_seqcount_latch(seqcount_t *s)
  *	unsigned seq, idx;
  *
  *	do {
- *		seq = lockless_dereference(latch->seq);
+ *		seq = lockless_dereference(latch)->seq;
  *
  *		idx = seq & 0x01;
  *		entry = data_query(latch->data[idx], ...);

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH] seqlock: fix raw_read_seqcount_latch() Alexey Dobriyan <adobriyan@gmail.com> - 2016-05-21 22:20 +0200
  Re: [PATCH] seqlock: fix raw_read_seqcount_latch() Peter Zijlstra <peterz@infradead.org> - 2016-05-22 12:50 +0200
    Re: [PATCH] seqlock: fix raw_read_seqcount_latch() Alexey Dobriyan <adobriyan@gmail.com> - 2016-05-22 21:00 +0200
      Re: [PATCH] seqlock: fix raw_read_seqcount_latch() Peter Zijlstra <peterz@infradead.org> - 2016-05-23 11:40 +0200
        Re: [PATCH] seqlock: fix raw_read_seqcount_latch() Tejun Heo <tj@kernel.org> - 2016-05-25 22:00 +0200
          [PATCH] percpu: Revert ("percpu: Replace smp_read_barrier_depends()  with lockless_dereference()") Tejun Heo <tj@kernel.org> - 2016-05-25 22:20 +0200
  Re: [PATCH] seqlock: fix raw_read_seqcount_latch() Peter Zijlstra <peterz@infradead.org> - 2016-05-27 13:20 +0200

csiph-web