[PATCH] NFS: Fix races in nfs_revalidate_mapping()

[sfrench/cifs-2.6.git] / include / linux / nfs_fs.h

diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 625ffea98561e4ca340636c1e5610ed66931d5a1..c5d4084773e8bf321ddba31e1370bfe0ae7cce64 100644 (file)
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -33,6 +33,7 @@
 #define FLUSH_HIGHPRI          16      /* high priority memory reclaim flush */
 #define FLUSH_NOCOMMIT         32      /* Don't send the NFSv3/v4 COMMIT */
 #define FLUSH_INVALIDATE       64      /* Invalidate the page cache */
+#define FLUSH_NOWRITEPAGE      128     /* Don't call writepage() */
 
 #ifdef __KERNEL__
 
@@ -307,6 +308,7 @@ extern int nfs_attribute_timeout(struct inode *inode);
 extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode);
 extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *);
 extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping);
+extern int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping);
 extern int nfs_setattr(struct dentry *, struct iattr *);
 extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr);
 extern void nfs_begin_attr_update(struct inode *);
@@ -427,19 +429,21 @@ extern int  nfs_flush_incompatible(struct file *file, struct page *page);
 extern int  nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int);
 extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *);
 extern void nfs_writedata_release(void *);
-
-#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
-struct nfs_write_data *nfs_commit_alloc(void);
-void nfs_commit_free(struct nfs_write_data *p);
-#endif
+extern int nfs_set_page_dirty(struct page *);
 
 /*
  * Try to write back everything synchronously (but check the
  * return value!)
  */
-extern int  nfs_sync_inode_wait(struct inode *, unsigned long, unsigned int, int);
+extern long nfs_sync_mapping_wait(struct address_space *, struct writeback_control *, int);
+extern int nfs_sync_mapping_range(struct address_space *, loff_t, loff_t, int);
+extern int nfs_wb_all(struct inode *inode);
+extern int nfs_wb_page(struct inode *inode, struct page* page);
+extern int nfs_wb_page_priority(struct inode *inode, struct page* page, int how);
 #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
 extern int  nfs_commit_inode(struct inode *, int);
+extern struct nfs_write_data *nfs_commit_alloc(void);
+extern void nfs_commit_free(struct nfs_write_data *wdata);
 extern void nfs_commit_release(void *wdata);
 #else
 static inline int
@@ -455,28 +459,6 @@ nfs_have_writebacks(struct inode *inode)
        return NFS_I(inode)->npages != 0;
 }
 
-static inline int
-nfs_wb_all(struct inode *inode)
-{
-       int error = nfs_sync_inode_wait(inode, 0, 0, 0);
-       return (error < 0) ? error : 0;
-}
-
-/*
- * Write back all requests on one page - we do this before reading it.
- */
-static inline int nfs_wb_page_priority(struct inode *inode, struct page* page, int how)
-{
-       int error = nfs_sync_inode_wait(inode, page->index, 1,
-                       how | FLUSH_STABLE);
-       return (error < 0) ? error : 0;
-}
-
-static inline int nfs_wb_page(struct inode *inode, struct page* page)
-{
-       return nfs_wb_page_priority(inode, page, 0);
-}
-
 /*
  * Allocate nfs_write_data structures
  */