[patch-rt] drivers/zram: fix zcomp_stream_get() smp_processor_id() use in preemptible code
From: Mike Galbraith <hidden>
Date: 2017-08-23 09:57:45
Also in:
lkml
Use get_local_ptr() vs this_cpu_ptr(). Signed-off-by: Mike Galbraith <redacted> --- 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,