From: Qiaowei Ren <qiaowei.ren@intel.com>
To: linux-bcache@vger.kernel.org
Cc: qiaowei.ren@intel.com, jianpeng.ma@intel.com, colyli@suse.de,
rdunlap@infradead.oom
Subject: [bch-nvm-pages v10 6/6] bcache: get allocated pages from specific owner
Date: Fri, 21 May 2021 10:57:26 -0400 [thread overview]
Message-ID: <20210521145726.154276-7-qiaowei.ren@intel.com> (raw)
In-Reply-To: <20210521145726.154276-1-qiaowei.ren@intel.com>
From: Jianpeng Ma <jianpeng.ma@intel.com>
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@intel.com>
Co-developed-by: Qiaowei Ren <qiaowei.ren@intel.com>
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>
---
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 755f3727a468..4f7fde0286a3 100644
--- a/drivers/md/bcache/nvm-pages.c
+++ b/drivers/md/bcache/nvm-pages.c
@@ -395,6 +395,12 @@ 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 918aee6a9afc..cfb3e8ef01ee 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 */
--
2.25.1
prev parent reply other threads:[~2021-05-21 7:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-21 14:57 [bch-nvm-pages v10 0/6] nvm page allocator for bcache Qiaowei Ren
2021-05-21 14:57 ` [bch-nvm-pages v10 1/6] bcache: add initial data structures for nvm pages Qiaowei Ren
2021-05-21 14:57 ` [bch-nvm-pages v10 2/6] bcache: initialize the nvm pages allocator Qiaowei Ren
2021-05-21 14:57 ` [bch-nvm-pages v10 3/6] bcache: initialization of the buddy Qiaowei Ren
2021-05-21 14:57 ` [bch-nvm-pages v10 4/6] cache: bch_nvm_alloc_pages() " Qiaowei Ren
2021-05-21 14:57 ` [bch-nvm-pages v10 5/6] bcache: bch_nvm_free_pages() " Qiaowei Ren
2021-05-21 14:57 ` Qiaowei Ren [this message]
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