1 files changed, 23 insertions, 9 deletions

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 52cab65f91cf..c478b772cc49 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -243,13 +243,24 @@ out:
 /* A writeback failed: mark the page as bad, and invalidate the page cache */
 static void nfs_set_pageerror(struct address_space *mapping)
 {
+	struct inode *inode = mapping->host;
+
 	nfs_zap_mapping(mapping->host, mapping);
+	/* Force file size revalidation */
+	spin_lock(&inode->i_lock);
+	NFS_I(inode)->cache_validity |= NFS_INO_REVAL_FORCED |
+					NFS_INO_REVAL_PAGECACHE |
+					NFS_INO_INVALID_SIZE;
+	spin_unlock(&inode->i_lock);
 }
 
 static void nfs_mapping_set_error(struct page *page, int error)
 {
+	struct address_space *mapping = page_file_mapping(page);
+
 	SetPageError(page);
-	mapping_set_error(page_file_mapping(page), error);
+	mapping_set_error(mapping, error);
+	nfs_set_pageerror(mapping);
 }
 
 /*
@@ -592,7 +603,7 @@ release_request:
 
 static void nfs_write_error(struct nfs_page *req, int error)
 {
-	nfs_set_pageerror(page_file_mapping(req->wb_page));
+	trace_nfs_write_error(req, error);
 	nfs_mapping_set_error(req->wb_page, error);
 	nfs_inode_remove_request(req);
 	nfs_end_page_writeback(req);
@@ -998,7 +1009,7 @@ static void nfs_write_completion(struct nfs_pgio_header *hdr)
 		nfs_list_remove_request(req);
 		if (test_bit(NFS_IOHDR_ERROR, &hdr->flags) &&
 		    (hdr->good_bytes < bytes)) {
-			nfs_set_pageerror(page_file_mapping(req->wb_page));
+			trace_nfs_comp_error(req, hdr->error);
 			nfs_mapping_set_error(req->wb_page, hdr->error);
 			goto remove_req;
 		}
@@ -1403,8 +1414,7 @@ static void nfs_initiate_write(struct nfs_pgio_header *hdr,
 
 	task_setup_data->priority = priority;
 	rpc_ops->write_setup(hdr, msg, &task_setup_data->rpc_client);
-	trace_nfs_initiate_write(hdr->inode, hdr->io_start, hdr->good_bytes,
-				 hdr->args.stable);
+	trace_nfs_initiate_write(hdr);
 }
 
 /* If a nfs_flush_* function fails, it should remove reqs from @head and
@@ -1568,8 +1578,7 @@ static int nfs_writeback_done(struct rpc_task *task,
 		return status;
 
 	nfs_add_stats(inode, NFSIOS_SERVERWRITTENBYTES, hdr->res.count);
-	trace_nfs_writeback_done(inode, task->tk_status,
-				 hdr->args.offset, hdr->res.verf);
+	trace_nfs_writeback_done(task, hdr);
 
 	if (hdr->res.verf->committed < hdr->args.stable &&
 	    task->tk_status >= 0) {
@@ -1649,6 +1658,8 @@ static void nfs_writeback_result(struct rpc_task *task,
 			 */
 			argp->stable = NFS_FILE_SYNC;
 		}
+		resp->count = 0;
+		resp->verf->committed = 0;
 		rpc_restart_call_prepare(task);
 	}
 }
@@ -1824,11 +1835,12 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata)
 
 	/* Call the NFS version-specific code */
 	NFS_PROTO(data->inode)->commit_done(task, data);
-	trace_nfs_commit_done(data);
+	trace_nfs_commit_done(task, data);
 }
 
 static void nfs_commit_release_pages(struct nfs_commit_data *data)
 {
+	const struct nfs_writeverf *verf = data->res.verf;
 	struct nfs_page	*req;
 	int status = data->task.tk_status;
 	struct nfs_commit_info cinfo;
@@ -1847,6 +1859,7 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
 			(long long)req_offset(req));
 		if (status < 0) {
 			if (req->wb_page) {
+				trace_nfs_commit_error(req, status);
 				nfs_mapping_set_error(req->wb_page, status);
 				nfs_inode_remove_request(req);
 			}
@@ -1856,7 +1869,8 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
 
 		/* Okay, COMMIT succeeded, apparently. Check the verifier
 		 * returned by the server against all stored verfs. */
-		if (!nfs_write_verifier_cmp(&req->wb_verf, &data->verf.verifier)) {
+		if (verf->committed > NFS_UNSTABLE &&
+		    !nfs_write_verifier_cmp(&req->wb_verf, &verf->verifier)) {
 			/* We have a match */
 			if (req->wb_page)
 				nfs_inode_remove_request(req);