linux-kernel - [PATCH] md/bitmap: use mddev_suspend/resume instead of ->quiesce()

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Message-Id: <1539012243-7489-1-git-send-email-jinpuwang@gmail.com>
Date:   Mon,  8 Oct 2018 17:24:03 +0200
From:   Jack Wang <xjtuwjp@...il.com>
To:     shli@...nel.org, neilb@...e.com, linux-raid@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Jack Wang <jinpu.wang@...fitbricks.com>
Subject: [PATCH] md/bitmap: use mddev_suspend/resume instead of ->quiesce()

From: Jack Wang <jinpu.wang@...fitbricks.com>

After 9e1cc0a54556 ("md: use mddev_suspend/resume instead of ->quiesce()")
We still have similar left in bitmap functions.

Replace quiesce() with mddev_suspend/resume.

Also move md_bitmap_create out of mddev_suspend. and move mddev_resume
after md_bitmap_destroy. as we did in set_bitmap_file.

Signed-off-by: Jack Wang <jinpu.wang@...fitbricks.com>
Reviewed-by: Gioh Kim <gi-oh.kim@...fitbricks.com>

---
v3->v2: Drop the change in md_bitmap_resize, as Shaohua noticed
mddev_suspend/resume is supposed to be called with reconfig_mutex hold, it's not
the case here.
v2->v1: add reviewed-by.
---
 drivers/md/md-bitmap.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 2fc8c113977f..1cd4f991792c 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -2288,9 +2288,9 @@ location_store(struct mddev *mddev, const char *buf, size_t len)
 			goto out;
 		}
 		if (mddev->pers) {
-			mddev->pers->quiesce(mddev, 1);
+			mddev_suspend(mddev);
 			md_bitmap_destroy(mddev);
-			mddev->pers->quiesce(mddev, 0);
+			mddev_resume(mddev);
 		}
 		mddev->bitmap_info.offset = 0;
 		if (mddev->bitmap_info.file) {
@@ -2327,8 +2327,8 @@ location_store(struct mddev *mddev, const char *buf, size_t len)
 			mddev->bitmap_info.offset = offset;
 			if (mddev->pers) {
 				struct bitmap *bitmap;
-				mddev->pers->quiesce(mddev, 1);
 				bitmap = md_bitmap_create(mddev, -1);
+				mddev_suspend(mddev);
 				if (IS_ERR(bitmap))
 					rv = PTR_ERR(bitmap);
 				else {
@@ -2337,11 +2337,12 @@ location_store(struct mddev *mddev, const char *buf, size_t len)
 					if (rv)
 						mddev->bitmap_info.offset = 0;
 				}
-				mddev->pers->quiesce(mddev, 0);
 				if (rv) {
 					md_bitmap_destroy(mddev);
+					mddev_resume(mddev);
 					goto out;
 				}
+				mddev_resume(mddev);
 			}
 		}
 	}
-- 
2.7.4