block: fix comment in blk-iopoll.c

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/block/blk-iopoll.c b/block/blk-iopoll.c
index 0671d4614b08..b9b32652292c 100644
--- a/block/blk-iopoll.c
+++ b/block/blk-iopoll.c
@@ -115,9 +115,12 @@ static void blk_iopoll_softirq(struct softirq_action *h)
 
                 local_irq_disable();
 
-                /* Drivers must not modify the NAPI state if they
-                 * consume the entire weight.  In such cases this code
-                 * still "owns" the NAPI instance and therefore can
+                /*
+                 * Drivers must not modify the iopoll state, if they
+                 * consume their assigned weight (or more, some drivers can't
+                 * easily just stop processing, they have to complete an
+                 * entire mask of commands).In such cases this code
+                 * still "owns" the iopoll instance and therefore can
                  * move the instance around on the list at-will.
                  */
                 if (work >= weight) {