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>
diff --git a/block/blk-core.c b/block/blk-core.c
index 35bf4fe..4b4dbdf 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2909,7 +2909,7 @@
}
-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 @@
struct blk_plug_cb,
list);
list_del(&cb->list);
- cb->callback(cb);
+ cb->callback(cb, from_schedule);
}
}
}
@@ -2961,7 +2961,7 @@
BUG_ON(plug->magic != PLUG_MAGIC);
- flush_plug_callbacks(plug);
+ flush_plug_callbacks(plug, from_schedule);
if (list_empty(&plug->list))
return;