vfs: take O_NONBLOCK out of the O_* uniqueness test

O_NONBLOCK on parisc has a dual value:

#define O_NONBLOCK	000200004 /* HPUX has separate NDELAY & NONBLOCK */

It is caught by the O_* bits uniqueness check and leads to a parisc
compile error.  The fix would be to take O_NONBLOCK out.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Cc: Jamie Lokier <jamie@shareable.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 3 deletions

diff --git a/fs/fcntl.c b/fs/fcntl.c
index 6769fd0f35b8..f8cc34f542c3 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -769,11 +769,15 @@ EXPORT_SYMBOL(kill_fasync);
 
 static int __init fcntl_init(void)
 {
-        /* please add new bits here to ensure allocation uniqueness */
-        BUILD_BUG_ON(19 - 1 /* for O_RDONLY being 0 */ != HWEIGHT32(
+        /*
+         * Please add new bits here to ensure allocation uniqueness.
+         * Exceptions: O_NONBLOCK is a two bit define on parisc; O_NDELAY
+         * is defined as O_NONBLOCK on some platforms and not on others.
+         */
+        BUILD_BUG_ON(18 - 1 /* for O_RDONLY being 0 */ != HWEIGHT32(
                 O_RDONLY        | O_WRONLY      | O_RDWR        |
                 O_CREAT         | O_EXCL        | O_NOCTTY      |
-                O_TRUNC         | O_APPEND      | O_NONBLOCK    |
+                O_TRUNC         | O_APPEND      | /* O_NONBLOCK | */
                 __O_SYNC        | O_DSYNC       | FASYNC        |
                 O_DIRECT        | O_LARGEFILE   | O_DIRECTORY   |
                 O_NOFOLLOW      | O_NOATIME     | O_CLOEXEC     |