On 6/15/21 7:49 AM, Coly Li wrote:
> From: Jianpeng Ma <jianpeng.ma@xxxxxxxxx>
>
> This patch implements bch_get_allocated_pages() of the buddy to be used to
buddy allocator
> get allocated pages from specific owner.
>
> Signed-off-by: Jianpeng Ma <jianpeng.ma@xxxxxxxxx>
> Co-developed-by: Qiaowei Ren <qiaowei.ren@xxxxxxxxx>
> Signed-off-by: Qiaowei Ren <qiaowei.ren@xxxxxxxxx>
> Signed-off-by: Coly Li <colyli@xxxxxxx>
> ---
> drivers/md/bcache/nvm-pages.c | 6 ++++++
> drivers/md/bcache/nvm-pages.h | 5 +++++
> 2 files changed, 11 insertions(+)
>
> diff --git a/drivers/md/bcache/nvm-pages.c b/drivers/md/bcache/nvm-pages.c
> index 74d08950c67c..42b0504d9564 100644
> --- a/drivers/md/bcache/nvm-pages.c
> +++ b/drivers/md/bcache/nvm-pages.c
> @@ -397,6 +397,12 @@ void *bch_nvm_alloc_pages(int order, const char *owner_uuid)
> }
> EXPORT_SYMBOL_GPL(bch_nvm_alloc_pages);
>
> +struct bch_nvm_pages_owner_head *bch_get_allocated_pages(const char *owner_uuid)
> +{
> + return find_owner_head(owner_uuid, false);
> +}
> +EXPORT_SYMBOL_GPL(bch_get_allocated_pages);
> +
> #define BCH_PGOFF_TO_KVADDR(pgoff) ((void *)((unsigned long)pgoff << PAGE_SHIFT))
>
> static int init_owner_info(struct bch_nvm_namespace *ns)
> diff --git a/drivers/md/bcache/nvm-pages.h b/drivers/md/bcache/nvm-pages.h
> index 0ca699166855..c763bf2e2721 100644
> --- a/drivers/md/bcache/nvm-pages.h
> +++ b/drivers/md/bcache/nvm-pages.h
> @@ -64,6 +64,7 @@ int bch_nvm_init(void);
> void bch_nvm_exit(void);
> void *bch_nvm_alloc_pages(int order, const char *owner_uuid);
> void bch_nvm_free_pages(void *addr, int order, const char *owner_uuid);
> +struct bch_nvm_pages_owner_head *bch_get_allocated_pages(const char *owner_uuid);
>
> #else
>
> @@ -81,6 +82,10 @@ static inline void *bch_nvm_alloc_pages(int order, const char *owner_uuid)
> return NULL;
> }
> static inline void bch_nvm_free_pages(void *addr, int order, const char *owner_uuid) { }
> +static inline struct bch_nvm_pages_owner_head *bch_get_allocated_pages(const char *owner_uuid)
> +{
> + return NULL;
> +}
>
> #endif /* CONFIG_BCACHE_NVM_PAGES */
>
>
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@xxxxxxx +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Felix Imendörffer
