From: Jens Axboe <axboe@kernel.dk>
Date: Thu, 9 Aug 2018 20:22:41 +0000 (-0600)
Subject: null_blk: add lock drop/acquire annotation
X-Git-Tag: v5.15~8146^2~33
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=61884de08f8368b9aa289ab8dc953e0ce4c755b1;p=platform%2Fkernel%2Flinux-starfive.git

null_blk: add lock drop/acquire annotation

sparse complains:

drivers/block/null_blk_main.c:816:24: sparse: context imbalance in 'null_insert_page' - unexpected unlock

Fix it by adding the necessary annotations to the function.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c
index 86cafa6..6127e3f 100644
--- a/drivers/block/null_blk_main.c
+++ b/drivers/block/null_blk_main.c
@@ -804,7 +804,9 @@ static struct nullb_page *null_lookup_page(struct nullb *nullb,
 }
 
 static struct nullb_page *null_insert_page(struct nullb *nullb,
-	sector_t sector, bool ignore_cache)
+					   sector_t sector, bool ignore_cache)
+	__releases(&nullb->lock)
+	__acquires(&nullb->lock)
 {
 	u64 idx;
 	struct nullb_page *t_page;