NFS: rewrite directio write to use async coalesce code

This also has the advantage that it allows directio to use pnfs.

Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 16 insertions, 2 deletions

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 137f5cd71433..d68810f61869 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -320,10 +320,11 @@ extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio);
 extern void nfs_readdata_release(struct nfs_read_data *rdata);
 
 /* write.c */
+extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
+                        struct inode *inode, int ioflags,
+                        const struct nfs_pgio_completion_ops *compl_ops);
 extern struct nfs_write_header *nfs_writehdr_alloc(void);
 extern void nfs_writehdr_free(struct nfs_pgio_header *hdr);
-extern struct nfs_write_data *nfs_writedata_alloc(struct nfs_pgio_header *hdr,
-                                                  unsigned int pagecount);
 extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc,
                              struct nfs_pgio_header *hdr);
 extern void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio,
@@ -346,6 +347,15 @@ extern void nfs_init_commit(struct nfs_commit_data *data,
                             struct list_head *head,
                             struct pnfs_layout_segment *lseg,
                             struct nfs_commit_info *cinfo);
+int nfs_scan_commit_list(struct list_head *src, struct list_head *dst,
+                         struct nfs_commit_info *cinfo, int max);
+int nfs_scan_commit(struct inode *inode, struct list_head *dst,
+                    struct nfs_commit_info *cinfo);
+void nfs_mark_request_commit(struct nfs_page *req,
+                             struct pnfs_layout_segment *lseg,
+                             struct nfs_commit_info *cinfo);
+int nfs_generic_commit_list(struct inode *inode, struct list_head *head,
+                            int how, struct nfs_commit_info *cinfo);
 void nfs_retry_commit(struct list_head *page_list,
                       struct pnfs_layout_segment *lseg,
                       struct nfs_commit_info *cinfo);
@@ -365,6 +375,10 @@ extern int nfs_migrate_page(struct address_space *,
 #define nfs_migrate_page NULL
 #endif
 
+/* direct.c */
+void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
+                              struct nfs_direct_req *dreq);
+
 /* nfs4proc.c */
 extern void __nfs4_read_done_cb(struct nfs_read_data *);
 extern void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data);