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authorChristoph Hellwig <hch@lst.de>2022-04-20 06:27:15 +0200
committerJens Axboe <axboe@kernel.dk>2022-05-02 14:06:20 -0600
commitdec223c92a4688f6c9642d640cfe15a99d289dd4 (patch)
treeee13aaf118cd8a274d477a144fb9aed2ed33a8df /include/linux/blk-cgroup.h
parent397c9f46ee4d99024c64954b007c1b5762d01cb4 (diff)
blk-cgroup: move struct blkcg to block/blk-cgroup.h
There is no real need to expose the blkcg structure to the whole kernel. Move it to the private header an expose a helper to let the writeback code access the cgwb_list member. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Tejun Heo <tj@kernel.org> Link: https://lore.kernel.org/r/20220420042723.1010598-8-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blk-cgroup.h')
-rw-r--r--include/linux/blk-cgroup.h32
1 files changed, 1 insertions, 31 deletions
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index 0fb7459096e9..d7b188095040 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -37,29 +37,6 @@ enum blkg_iostat_type {
BLKG_IOSTAT_NR,
};
-struct blkcg_gq;
-struct blkg_policy_data;
-
-struct blkcg {
- struct cgroup_subsys_state css;
- spinlock_t lock;
- refcount_t online_pin;
-
- struct radix_tree_root blkg_tree;
- struct blkcg_gq __rcu *blkg_hint;
- struct hlist_head blkg_list;
-
- struct blkcg_policy_data *cpd[BLKCG_MAX_POLS];
-
- struct list_head all_blkcgs_node;
-#ifdef CONFIG_BLK_CGROUP_FC_APPID
- char fc_app_id[FC_APPID_LEN];
-#endif
-#ifdef CONFIG_CGROUP_WRITEBACK
- struct list_head cgwb_list;
-#endif
-};
-
struct blkg_iostat {
u64 bytes[BLKG_IOSTAT_NR];
u64 ios[BLKG_IOSTAT_NR];
@@ -114,11 +91,6 @@ extern struct cgroup_subsys_state * const blkcg_root_css;
void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay);
void blkcg_maybe_throttle_current(void);
-static inline struct blkcg *css_to_blkcg(struct cgroup_subsys_state *css)
-{
- return css ? container_of(css, struct blkcg, css) : NULL;
-}
-
/**
* bio_blkcg - grab the blkcg associated with a bio
* @bio: target bio
@@ -137,12 +109,10 @@ static inline struct blkcg *bio_blkcg(struct bio *bio)
bool blk_cgroup_congested(void);
void blkcg_pin_online(struct cgroup_subsys_state *blkcg_css);
void blkcg_unpin_online(struct cgroup_subsys_state *blkcg_css);
+struct list_head *blkcg_get_cgwb_list(struct cgroup_subsys_state *css);
#else /* CONFIG_BLK_CGROUP */
-struct blkcg {
-};
-
struct blkcg_gq {
};