[PATCH v7 06/16] bcache: get allocated pages from specific owner
From: Coly Li <hidden>
Date: 2021-04-09 16:44:34
Also in:
linux-bcache, nvdimm
Subsystem:
bcache (block layer cache), the rest · Maintainers:
Coly Li, Kent Overstreet, Linus Torvalds
From: Jianpeng Ma <redacted> 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 <redacted> Co-authored-by: Qiaowei Ren [off-list ref] --- 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 e576b4cb4850..2ba02091bccf 100644
--- a/drivers/md/bcache/nvm-pages.c
+++ b/drivers/md/bcache/nvm-pages.c@@ -374,6 +374,12 @@ 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 */
--
2.26.2