diff options
Diffstat (limited to 'for-test/nvdimm-support/meta-dev-20230303/0006-bcache-get-recs-list-head-for-allocated-pages-by-specific-uuid.patch')
| -rw-r--r-- | for-test/nvdimm-support/meta-dev-20230303/0006-bcache-get-recs-list-head-for-allocated-pages-by-specific-uuid.patch | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/for-test/nvdimm-support/meta-dev-20230303/0006-bcache-get-recs-list-head-for-allocated-pages-by-specific-uuid.patch b/for-test/nvdimm-support/meta-dev-20230303/0006-bcache-get-recs-list-head-for-allocated-pages-by-specific-uuid.patch new file mode 100644 index 0000000..fb312f3 --- /dev/null +++ b/for-test/nvdimm-support/meta-dev-20230303/0006-bcache-get-recs-list-head-for-allocated-pages-by-specific-uuid.patch @@ -0,0 +1,67 @@ +From 5f3c1d461205e4baebfa952650827477d4d988cd Mon Sep 17 00:00:00 2001 +From: Jianpeng Ma <jianpeng.ma@intel.com> +Date: Thu, 21 Oct 2021 21:06:03 +0800 +Subject: [PATCH 06/16] bcache: get recs list head for allocated pages by + specific uuid + +This patch implements bch_get_nvmpg_head() of the buddy allocator +to be used to get recs list head for allocated pages by specific +uuid. Then the requester (owner) can find all previous allocated +nvdimm pages by iterating the recs list. + +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> +Reviewed-by: Hannes Reinecke <hare@suse.de> +Cc: Christoph Hellwig <hch@lst.de> +Cc: Dan Williams <dan.j.williams@intel.com> +Cc: Jens Axboe <axboe@kernel.dk> +--- + drivers/md/bcache/nvmpg.c | 6 ++++++ + drivers/md/bcache/nvmpg.h | 6 ++++++ + 2 files changed, 12 insertions(+) + +diff --git a/drivers/md/bcache/nvmpg.c b/drivers/md/bcache/nvmpg.c +index 129938603bc7..87e2f5c3f734 100644 +--- a/drivers/md/bcache/nvmpg.c ++++ b/drivers/md/bcache/nvmpg.c +@@ -539,6 +539,12 @@ unsigned long bch_nvmpg_alloc_pages(int order, const char *uuid) + } + EXPORT_SYMBOL_GPL(bch_nvmpg_alloc_pages); + ++struct bch_nvmpg_head *bch_get_nvmpg_head(const char *uuid) ++{ ++ return find_nvmpg_head(uuid, false); ++} ++EXPORT_SYMBOL_GPL(bch_get_nvmpg_head); ++ + static inline void *nvm_end_addr(struct bch_nvmpg_ns *ns) + { + return ns->base_addr + (ns->pages_total << PAGE_SHIFT); +diff --git a/drivers/md/bcache/nvmpg.h b/drivers/md/bcache/nvmpg.h +index 009582b5771b..a2621c201fa6 100644 +--- a/drivers/md/bcache/nvmpg.h ++++ b/drivers/md/bcache/nvmpg.h +@@ -94,6 +94,7 @@ int bch_nvmpg_init(void); + void bch_nvmpg_exit(void); + unsigned long bch_nvmpg_alloc_pages(int order, const char *uuid); + void bch_nvmpg_free_pages(unsigned long nvmpg_offset, int order, const char *uuid); ++struct bch_nvmpg_head *bch_get_nvmpg_head(const char *uuid); + + #else + +@@ -116,6 +117,11 @@ static inline unsigned long bch_nvmpg_alloc_pages(int order, const char *uuid) + + static inline void bch_nvmpg_free_pages(unsigned long nvmpg_offset, int order, const char *uuid) { } + ++static inline struct bch_nvmpg_head *bch_get_nvmpg_head(const char *uuid) ++{ ++ return NULL; ++} ++ + #endif /* CONFIG_BCACHE_NVM_PAGES */ + + #endif /* _BCACHE_NVM_PAGES_H */ +-- +2.39.2 + |