Re: [PATCH 1/8] md: rename wb stuffs

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On Fri, Nov 1, 2019 at 7:23 AM <jgq516@xxxxxxxxx> wrote:
>
> From: Guoqing Jiang <guoqing.jiang@xxxxxxxxxxxxxxx>
>
> Previously, wb_info_pool and wb_list stuffs are introduced
> to address potential data inconsistence issue for write
> behind device.
>
> Now rename them to serial related name, since the same
> mechanism will be used to address reorder overlap write
> issue for raid1.
>
> Signed-off-by: Guoqing Jiang <guoqing.jiang@xxxxxxxxxxxxxxx>
> ---
>  drivers/md/md-bitmap.c | 20 ++++++-------
>  drivers/md/md.c        | 68 ++++++++++++++++++++++--------------------
>  drivers/md/md.h        | 22 +++++++-------
>  drivers/md/raid1.c     | 43 +++++++++++++-------------
>  4 files changed, 78 insertions(+), 75 deletions(-)
>
> diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
> index b092c7b5282f..5058716918ef 100644
> --- a/drivers/md/md-bitmap.c
> +++ b/drivers/md/md-bitmap.c
> @@ -1790,8 +1790,8 @@ void md_bitmap_destroy(struct mddev *mddev)
>                 return;
>
>         md_bitmap_wait_behind_writes(mddev);

Maybe also rename md_bitmap_wait_behind_writes()?

> -       mempool_destroy(mddev->wb_info_pool);
> -       mddev->wb_info_pool = NULL;
> +       mempool_destroy(mddev->serial_info_pool);
> +       mddev->serial_info_pool = NULL;
>
>         mutex_lock(&mddev->bitmap_info.mutex);
>         spin_lock(&mddev->lock);
> @@ -1908,7 +1908,7 @@ int md_bitmap_load(struct mddev *mddev)
>                 goto out;
>
>         rdev_for_each(rdev, mddev)
> -               mddev_create_wb_pool(mddev, rdev, true);
> +               mddev_create_serial_pool(mddev, rdev, true);
>
>         if (mddev_is_clustered(mddev))
>                 md_cluster_ops->load_bitmaps(mddev, mddev->bitmap_info.nodes);
> @@ -2475,16 +2475,16 @@ backlog_store(struct mddev *mddev, const char *buf, size_t len)
>         if (backlog > COUNTER_MAX)
>                 return -EINVAL;
>         mddev->bitmap_info.max_write_behind = backlog;

Maybe also max_write_behind?

Well, these are not critical though.

Thanks,
Song



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