From: Mike Galbraith <efault@gmx.de>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-rt-users <linux-rt-users@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>
Subject: [patch-rt] drivers/zram: fix zcomp_stream_get() smp_processor_id() use in preemptible code
Date: Wed, 23 Aug 2017 11:57:29 +0200 [thread overview]
Message-ID: <1503482249.4970.7.camel@gmx.de> (raw)
In-Reply-To: <20170818120939.b2rj2whb2hgfzjpm@linutronix.de>
Use get_local_ptr() vs this_cpu_ptr().
Signed-off-by: Mike Galbraith <efault@gmx.de>
---
drivers/block/zram/zcomp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/block/zram/zcomp.c
+++ b/drivers/block/zram/zcomp.c
@@ -120,7 +120,7 @@ struct zcomp_strm *zcomp_stream_get(stru
{
struct zcomp_strm *zstrm;
- zstrm = *this_cpu_ptr(comp->stream);
+ zstrm = *get_local_ptr(comp->stream);
spin_lock(&zstrm->zcomp_lock);
return zstrm;
}
@@ -131,6 +131,7 @@ void zcomp_stream_put(struct zcomp *comp
zstrm = *this_cpu_ptr(comp->stream);
spin_unlock(&zstrm->zcomp_lock);
+ put_local_ptr(zstrm);
}
int zcomp_compress(struct zcomp_strm *zstrm,
next prev parent reply other threads:[~2017-08-23 9:57 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-18 12:09 [ANNOUNCE] v4.11.12-rt10 Sebastian Andrzej Siewior
2017-08-23 9:53 ` v4.11.12-rt10 - hotplug lockdep splat Mike Galbraith
2017-08-31 16:18 ` Sebastian Andrzej Siewior
2017-09-02 7:00 ` Mike Galbraith
2017-09-03 2:48 ` Mike Galbraith
2017-09-04 14:58 ` Sebastian Andrzej Siewior
2017-08-23 9:57 ` Mike Galbraith [this message]
2017-08-31 15:48 ` [patch-rt] drivers/zram: fix zcomp_stream_get() smp_processor_id() use in preemptible code Sebastian Andrzej Siewior
2017-08-31 19:11 ` Thomas Gleixner
2017-08-31 19:26 ` Sebastian Andrzej Siewior
2017-08-31 19:32 ` Thomas Gleixner
2017-09-01 7:40 ` Sebastian Andrzej Siewior
2017-09-01 7:47 ` Thomas Gleixner
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