blk: pass from_schedule to non-request unplug functions.

This will allow md/raid to know why the unplug was called,
and will be able to act according - if !from_schedule it
is safe to perform tasks which could themselves schedule.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 3 insertions, 3 deletions

diff --git a/block/blk-core.c b/block/blk-core.c
index 35bf4fe8234c..4b4dbdfbca89 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2909,7 +2909,7 @@ static void queue_unplugged(struct request_queue *q, unsigned int depth,
 
 }
 
-static void flush_plug_callbacks(struct blk_plug *plug)
+static void flush_plug_callbacks(struct blk_plug *plug, bool from_schedule)
 {
         LIST_HEAD(callbacks);
 
@@ -2921,7 +2921,7 @@ static void flush_plug_callbacks(struct blk_plug *plug)
                                                           struct blk_plug_cb,
                                                           list);
                         list_del(&cb->list);
-                        cb->callback(cb);
+                        cb->callback(cb, from_schedule);
                 }
         }
 }
@@ -2961,7 +2961,7 @@ void blk_flush_plug_list(struct blk_plug *plug, bool from_schedule)
 
         BUG_ON(plug->magic != PLUG_MAGIC);
 
-        flush_plug_callbacks(plug);
+        flush_plug_callbacks(plug, from_schedule);
         if (list_empty(&plug->list))
                 return;