Merge master.kernel.org:/pub/scm/linux/kernel/git/sfrench/cifs-2.6

fs/cifs/connect.c

@@ -1785,7 +1785,16 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 		} else if(volume_info.wsize)
 			cifs_sb->wsize = volume_info.wsize;
 		else
-			cifs_sb->wsize = CIFSMaxBufSize; /* default */
+			cifs_sb->wsize = 
+				min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE,
+					127*1024);
+			/* old default of CIFSMaxBufSize was too small now
+			   that SMB Write2 can send multiple pages in kvec.   
+			   RFC1001 does not describe what happens when frame
+			   bigger than 128K is sent so use that as max in
+			   conjunction with 52K kvec constraint on arch with 4K
+			   page size  */
+
 		if(cifs_sb->rsize < PAGE_CACHE_SIZE) {
 			cifs_sb->rsize = PAGE_CACHE_SIZE; 
 			/* Windows ME does this */

fs/cifs/file.c

@@ -1190,14 +1190,20 @@ static int cifs_writepages(struct address_space *mapping,
 					/* BB what if continued retry is
 					   requested via mount flags? */
 					set_bit(AS_EIO, &mapping->flags);
-					SetPageError(page);
 				} else {
 					cifs_stats_bytes_written(cifs_sb->tcon,
 								 bytes_written);
 				}
 			}
 			for (i = 0; i < n_iov; i++) {
 				page = pvec.pages[first + i];
+				/* Should we also set page error on
+				success rc but too little data written? */
+				/* BB investigate retry logic on temporary
+				server crash cases and how recovery works
+				when page marked as error */ 
+				if(rc)
+					SetPageError(page);
 				kunmap(page);
 				unlock_page(page);
 				page_cache_release(page);

fs/cifs/transport.c

@@ -498,7 +498,6 @@ SendReceive2(const unsigned int xid, struct cifsSesInfo *ses,
 			else
 				*pRespBufType = CIFS_SMALL_BUFFER;
 			iov[0].iov_len = receive_len + 4;
-			iov[1].iov_len = 0;
 
 			dump_smb(midQ->resp_buf, 80);
 			/* convert the length into a more usable form */