X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Flinux%2Fnfs_page.h;h=3c60685d972b595a5be6366328276a9c5a1cbcdb;hb=1557aca7904ed6fadd22cdc3364754070bb3d3c3;hp=91c7b18c47d8daad732b62e999f09b0fe65b82f4;hpb=bcb71bba7e64f0442d0ca339d7d3117a7060589f;p=safe%2Fjmp%2Flinux-2.6

diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h
index 91c7b18..3c60685 100644
--- a/include/linux/nfs_page.h
+++ b/include/linux/nfs_page.h
@@ -16,34 +16,35 @@
 #include <linux/sunrpc/auth.h>
 #include <linux/nfs_xdr.h>
 
-#include <asm/atomic.h>
+#include <linux/kref.h>
 
 /*
  * Valid flags for the radix tree
  */
-#define NFS_PAGE_TAG_DIRTY	0
-#define NFS_PAGE_TAG_WRITEBACK	1
+#define NFS_PAGE_TAG_LOCKED	0
+#define NFS_PAGE_TAG_COMMIT	1
 
 /*
  * Valid flags for a dirty buffer
  */
-#define PG_BUSY			0
-#define PG_NEED_COMMIT		1
-#define PG_NEED_RESCHED		2
-#define PG_NEED_FLUSH		3
+enum {
+	PG_BUSY = 0,
+	PG_CLEAN,
+	PG_NEED_COMMIT,
+	PG_NEED_RESCHED,
+};
 
 struct nfs_inode;
 struct nfs_page {
-	struct list_head	wb_list,	/* Defines state of page: */
-				*wb_list_head;	/*      read/write/commit */
+	struct list_head	wb_list;	/* Defines state of page: */
 	struct page		*wb_page;	/* page to read in/write out */
 	struct nfs_open_context	*wb_context;	/* File state context info */
 	atomic_t		wb_complete;	/* i/os we're waiting for */
-	unsigned long		wb_index;	/* Offset >> PAGE_CACHE_SHIFT */
+	pgoff_t			wb_index;	/* Offset >> PAGE_CACHE_SHIFT */
 	unsigned int		wb_offset,	/* Offset & ~PAGE_CACHE_MASK */
 				wb_pgbase,	/* Start of page data */
 				wb_bytes;	/* Length of request */
-	atomic_t		wb_count;	/* reference count */
+	struct kref		wb_kref;	/* reference count */
 	unsigned long		wb_flags;
 	struct nfs_writeverf	wb_verf;	/* Commit cookie */
 };
@@ -56,7 +57,7 @@ struct nfs_pageio_descriptor {
 	unsigned int		pg_base;
 
 	struct inode		*pg_inode;
-	int			(*pg_doio)(struct inode *, struct list_head *, size_t, int);
+	int			(*pg_doio)(struct inode *, struct list_head *, unsigned int, size_t, int);
 	int 			pg_ioflags;
 	int			pg_error;
 };
@@ -72,27 +73,25 @@ extern	void nfs_clear_request(struct nfs_page *req);
 extern	void nfs_release_request(struct nfs_page *req);
 
 
-extern	long nfs_scan_dirty(struct address_space *mapping,
-				struct writeback_control *wbc,
-				struct list_head *dst);
-extern	int nfs_scan_list(struct nfs_inode *nfsi, struct list_head *head, struct list_head *dst,
-			  unsigned long idx_start, unsigned int npages);
+extern	int nfs_scan_list(struct nfs_inode *nfsi, struct list_head *dst,
+			  pgoff_t idx_start, unsigned int npages, int tag);
 extern	void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
 			     struct inode *inode,
-			     int (*doio)(struct inode *, struct list_head *, size_t, int),
+			     int (*doio)(struct inode *, struct list_head *, unsigned int, size_t, int),
 			     size_t bsize,
 			     int how);
-extern	void nfs_pageio_add_list(struct nfs_pageio_descriptor *,
-				 struct list_head *);
+extern	int nfs_pageio_add_request(struct nfs_pageio_descriptor *,
+				   struct nfs_page *);
 extern	void nfs_pageio_complete(struct nfs_pageio_descriptor *desc);
+extern	void nfs_pageio_cond_complete(struct nfs_pageio_descriptor *, pgoff_t);
 extern  int nfs_wait_on_request(struct nfs_page *);
 extern	void nfs_unlock_request(struct nfs_page *req);
-extern  int nfs_set_page_writeback_locked(struct nfs_page *req);
-extern  void nfs_clear_page_writeback(struct nfs_page *req);
+extern	int nfs_set_page_tag_locked(struct nfs_page *req);
+extern  void nfs_clear_page_tag_locked(struct nfs_page *req);
 
 
 /*
- * Lock the page of an asynchronous request without incrementing the wb_count
+ * Lock the page of an asynchronous request without getting a new reference
  */
 static inline int
 nfs_lock_request_dontget(struct nfs_page *req)
@@ -100,18 +99,6 @@ nfs_lock_request_dontget(struct nfs_page *req)
 	return !test_and_set_bit(PG_BUSY, &req->wb_flags);
 }
 
-/*
- * Lock the page of an asynchronous request
- */
-static inline int
-nfs_lock_request(struct nfs_page *req)
-{
-	if (test_and_set_bit(PG_BUSY, &req->wb_flags))
-		return 0;
-	atomic_inc(&req->wb_count);
-	return 1;
-}
-
 /**
  * nfs_list_add_request - Insert a request into a list
  * @req: request
@@ -121,7 +108,6 @@ static inline void
 nfs_list_add_request(struct nfs_page *req, struct list_head *head)
 {
 	list_add_tail(&req->wb_list, head);
-	req->wb_list_head = head;
 }
 
 
@@ -135,7 +121,6 @@ nfs_list_remove_request(struct nfs_page *req)
 	if (list_empty(&req->wb_list))
 		return;
 	list_del_init(&req->wb_list);
-	req->wb_list_head = NULL;
 }
 
 static inline struct nfs_page *