kfifo: rename kfifo_put... into kfifo_in... and kfifo_get... into kfifo_out...

rename kfifo_put...  into kfifo_in...  to prevent miss use of old non in
kernel-tree drivers

ditto for kfifo_get...  -> kfifo_out...

Improve the prototypes of kfifo_in and kfifo_out to make the kerneldoc
annotations more readable.

Add mini "howto porting to the new API" in kfifo.h

Signed-off-by: Stefani Seibold <stefani@seibold.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/scsi/libsrp.c b/drivers/scsi/libsrp.c
index 975e448..8424b86 100644
--- a/drivers/scsi/libsrp.c
+++ b/drivers/scsi/libsrp.c
@@ -61,7 +61,7 @@
 	kfifo_init(&q->queue, (void *) q->pool, max * sizeof(void *));
 
 	for (i = 0, iue = q->items; i < max; i++) {
-		kfifo_put(&q->queue, (void *) &iue, sizeof(void *));
+		kfifo_in(&q->queue, (void *) &iue, sizeof(void *));
 		iue->sbuf = ring[i];
 		iue++;
 	}
@@ -163,7 +163,7 @@
 {
 	struct iu_entry *iue = NULL;
 
-	kfifo_get_locked(&target->iu_queue.queue, (void *) &iue,
+	kfifo_out_locked(&target->iu_queue.queue, (void *) &iue,
 			sizeof(void *), &target->iu_queue.lock);
 	if (!iue)
 		return iue;
@@ -176,7 +176,7 @@
 
 void srp_iu_put(struct iu_entry *iue)
 {
-	kfifo_put_locked(&iue->target->iu_queue.queue, (void *) &iue,
+	kfifo_in_locked(&iue->target->iu_queue.queue, (void *) &iue,
 			sizeof(void *), &iue->target->iu_queue.lock);
 }
 EXPORT_SYMBOL_GPL(srp_iu_put);