Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated

with server.  This allows files that differ only in case and 
improves performance of file creation and file open to such servers

fs/cifs/CHANGES

+Version 1.06
+------------
+Send NTCreateX with ATTR_POSIX if Linux/Unix extensions negotiated with server.
+This allows files that differ only in case and improves performance of file
+creation and file open to such servers.
+
 Version 1.05
 ------------
 fixes to cifs_readpages for fsx test case
+
 Version 1.04
 ------------
 Fix caching data integrity bug when extending file size especially when no

fs/cifs/cifssmb.c

@@ -562,8 +562,14 @@ CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
 	}
 	pSMB->DesiredAccess = cpu_to_le32(access_flags);
 	pSMB->AllocationSize = 0;
-	pSMB->FileAttributes = ATTR_NORMAL;	/* XP does not handle ATTR_POSIX_SEMANTICS */
-	/*if ((omode & S_IWUGO) == 0)
+	pSMB->FileAttributes = ATTR_NORMAL;
+	/* XP does not handle ATTR_POSIX_SEMANTICS */
+	/* but it helps speed up case sensitive checks for other
+	servers such as Samba */
+	if (tcon->ses->capabilities & CAP_UNIX)
+		pSMB->FileAttributes |= ATTR_POSIX_SEMANTICS;
+
+	/* if ((omode & S_IWUGO) == 0)
 		pSMB->FileAttributes |= ATTR_READONLY;*/
 	/*  Above line causes problems due to vfs splitting create into two
 		pieces - need to set mode after file created not while it is