From: Bryan Thompson Date: Fri, 5 Dec 2014 22:09:24 +0000 (-0500) Subject: staging: unisys: visorchannel: Describe spinlocks in VISORCHANNEL_Tag struct X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=9551bfba917a17f850b5887474c56b8772417e70;p=deliverable%2Flinux.git staging: unisys: visorchannel: Describe spinlocks in VISORCHANNEL_Tag struct Add comments indicating the requirements and use of the insert_lock and remove_lock in the VISORCHANNEL_Tag structure. Signed-off-by: Bryan Thompson Signed-off-by: Benjamin Romer Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/unisys/visorchannel/visorchannel_funcs.c b/drivers/staging/unisys/visorchannel/visorchannel_funcs.c index 1568b95ded47..1ce25c237d39 100644 --- a/drivers/staging/unisys/visorchannel/visorchannel_funcs.c +++ b/drivers/staging/unisys/visorchannel/visorchannel_funcs.c @@ -33,9 +33,10 @@ struct VISORCHANNEL_Tag { struct channel_header chan_hdr; uuid_le guid; ulong size; - BOOL needs_lock; - spinlock_t insert_lock; - spinlock_t remove_lock; + BOOL needs_lock; /* channel creator knows if more than one + * thread will be inserting or removing */ + spinlock_t insert_lock; /* protect head writes in chan_hdr */ + spinlock_t remove_lock; /* protect tail writes in chan_hdr */ struct { struct signal_queue_header req_queue;