NFS: rewrite directio read 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, 4 insertions, 3 deletions

diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 638ca7f5a1e4..33a21ca9b84b 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -48,8 +48,11 @@ void nfs_pgheader_init(struct nfs_pageio_descriptor *desc,
         hdr->cred = hdr->req->wb_context->cred;
         hdr->io_start = req_offset(hdr->req);
         hdr->good_bytes = desc->pg_count;
+        hdr->dreq = desc->pg_dreq;
         hdr->release = release;
         hdr->completion_ops = desc->pg_completion_ops;
+        if (hdr->completion_ops->init_hdr)
+                hdr->completion_ops->init_hdr(hdr);
 }
 
 void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos)
@@ -116,9 +119,6 @@ nfs_create_request(struct nfs_open_context *ctx, struct inode *inode,
         req->wb_page    = page;
         req->wb_index   = page->index;
         page_cache_get(page);
-        BUG_ON(PagePrivate(page));
-        BUG_ON(!PageLocked(page));
-        BUG_ON(page->mapping->host != inode);
         req->wb_offset  = offset;
         req->wb_pgbase  = offset;
         req->wb_bytes   = count;
@@ -257,6 +257,7 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
         desc->pg_ioflags = io_flags;
         desc->pg_error = 0;
         desc->pg_lseg = NULL;
+        desc->pg_dreq = NULL;
 }
 
 /**