2018-10-08 15:24:37

by Jack Wang

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

From: Jack Wang <[email protected]>

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 <[email protected]>
Reviewed-by: Gioh Kim <[email protected]>

---
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

2018-10-15 11:54:41

by Jack Wang

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

On Mon, Oct 8, 2018 at 5:24 PM Jack Wang <[email protected]> wrote:
>
> From: Jack Wang <[email protected]>
>
> 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 <[email protected]>
> Reviewed-by: Gioh Kim <[email protected]>
>
> ---
> 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.

ping?


--
Jack Wang
Linux Kernel Developer

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