1 files changed, 28 insertions, 32 deletions

diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index d6db822e4bb3..eda4b62511f7 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -213,11 +213,8 @@ static inline void wait_on_inode(struct inode *inode)
 #include <linux/bio.h>
 
 void __inode_attach_wb(struct inode *inode, struct folio *folio);
-void wbc_attach_and_unlock_inode(struct writeback_control *wbc,
-				 struct inode *inode)
-	__releases(&inode->i_lock);
 void wbc_detach_inode(struct writeback_control *wbc);
-void wbc_account_cgroup_owner(struct writeback_control *wbc, struct page *page,
+void wbc_account_cgroup_owner(struct writeback_control *wbc, struct folio *folio,
 			      size_t bytes);
 int cgroup_writeback_by_id(u64 bdi_id, int memcg_id,
 			   enum wb_reason reason, struct wb_completion *done);
@@ -254,22 +251,8 @@ static inline void inode_detach_wb(struct inode *inode)
 	}
 }
 
-/**
- * wbc_attach_fdatawrite_inode - associate wbc and inode for fdatawrite
- * @wbc: writeback_control of interest
- * @inode: target inode
- *
- * This function is to be used by __filemap_fdatawrite_range(), which is an
- * alternative entry point into writeback code, and first ensures @inode is
- * associated with a bdi_writeback and attaches it to @wbc.
- */
-static inline void wbc_attach_fdatawrite_inode(struct writeback_control *wbc,
-					       struct inode *inode)
-{
-	spin_lock(&inode->i_lock);
-	inode_attach_wb(inode, NULL);
-	wbc_attach_and_unlock_inode(wbc, inode);
-}
+void wbc_attach_fdatawrite_inode(struct writeback_control *wbc,
+		struct inode *inode);
 
 /**
  * wbc_init_bio - writeback specific initializtion of bio
@@ -303,13 +286,6 @@ static inline void inode_detach_wb(struct inode *inode)
 {
 }
 
-static inline void wbc_attach_and_unlock_inode(struct writeback_control *wbc,
-					       struct inode *inode)
-	__releases(&inode->i_lock)
-{
-	spin_unlock(&inode->i_lock);
-}
-
 static inline void wbc_attach_fdatawrite_inode(struct writeback_control *wbc,
 					       struct inode *inode)
 {
@@ -324,7 +300,7 @@ static inline void wbc_init_bio(struct writeback_control *wbc, struct bio *bio)
 }
 
 static inline void wbc_account_cgroup_owner(struct writeback_control *wbc,
-					    struct page *page, size_t bytes)
+					    struct folio *folio, size_t bytes)
 {
 }
 
@@ -337,6 +313,30 @@ static inline void cgroup_writeback_umount(struct super_block *sb)
 /*
  * mm/page-writeback.c
  */
+/* consolidated parameters for balance_dirty_pages() and its subroutines */
+struct dirty_throttle_control {
+#ifdef CONFIG_CGROUP_WRITEBACK
+	struct wb_domain	*dom;
+	struct dirty_throttle_control *gdtc;	/* only set in memcg dtc's */
+#endif
+	struct bdi_writeback	*wb;
+	struct fprop_local_percpu *wb_completions;
+
+	unsigned long		avail;		/* dirtyable */
+	unsigned long		dirty;		/* file_dirty + write + nfs */
+	unsigned long		thresh;		/* dirty threshold */
+	unsigned long		bg_thresh;	/* dirty background threshold */
+	unsigned long		limit;		/* hard dirty limit */
+
+	unsigned long		wb_dirty;	/* per-wb counterparts */
+	unsigned long		wb_thresh;
+	unsigned long		wb_bg_thresh;
+
+	unsigned long		pos_ratio;
+	bool			freerun;
+	bool			dirty_exceeded;
+};
+
 void laptop_io_completion(struct backing_dev_info *info);
 void laptop_sync_completion(void);
 void laptop_mode_timer_fn(struct timer_list *t);
@@ -351,12 +351,8 @@ extern struct wb_domain global_wb_domain;
 /* These are exported to sysctl. */
 extern unsigned int dirty_writeback_interval;
 extern unsigned int dirty_expire_interval;
-extern unsigned int dirtytime_expire_interval;
 extern int laptop_mode;
 
-int dirtytime_interval_handler(const struct ctl_table *table, int write,
-		void *buffer, size_t *lenp, loff_t *ppos);
-
 void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty);
 unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh);
 unsigned long cgwb_calc_thresh(struct bdi_writeback *wb);