From: Jianpeng Ma <jianpeng.ma@xxxxxxxxx>
This patch implements bch_get_allocated_pages() of the buddy to be used to
get allocated pages from specific owner.
Signed-off-by: Jianpeng Ma <jianpeng.ma@xxxxxxxxx>
Co-authored-by: Qiaowei Ren <qiaowei.ren@xxxxxxxxx>
---
drivers/md/bcache/nvm-pages.c | 6 ++++++
drivers/md/bcache/nvm-pages.h | 7 ++++++-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/md/bcache/nvm-pages.c b/drivers/md/bcache/nvm-pages.c
index c5b1811b201c..a8b3c53d7aaf 100644
--- a/drivers/md/bcache/nvm-pages.c
+++ b/drivers/md/bcache/nvm-pages.c
@@ -380,6 +380,12 @@ 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);
+
static int init_owner_info(struct bch_nvm_namespace *ns)
{
struct bch_owner_list_head *owner_list_head = ns->sb->owner_list_head;
diff --git a/drivers/md/bcache/nvm-pages.h b/drivers/md/bcache/nvm-pages.h
index 4ea831894583..87b1efc301c8 100644
--- a/drivers/md/bcache/nvm-pages.h
+++ b/drivers/md/bcache/nvm-pages.h
@@ -62,7 +62,7 @@ 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
static inline struct bch_nvm_namespace *bch_register_namespace(const char *dev_path)
@@ -81,6 +81,11 @@ static inline void *bch_nvm_alloc_pages(int order, const char *owner_uuid)
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 */
#endif /* _BCACHE_NVM_PAGES_H */
--
2.25.1
