diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 88f60aa520584a87acab13422d22940063f2b536..eae306fa24b2f97e6c51332bdc8a3ffbb806c1a6 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1785,7 +1785,15 @@ 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(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 */