[PATCH 08/14] bcache: get allocated pages from specific owner
From: Coly Li <hidden>
Date: 2021-06-15 05:49:51
Also in:
linux-block
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-developed-by: Qiaowei Ren <redacted> Signed-off-by: Qiaowei Ren <redacted> Signed-off-by: Coly Li <redacted> --- 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 */
--
2.26.2