[PATCH 01/12] uapi/fs: add O_ATOMIC to the open flags

[Christoph Hellwig]

Signed-off-by: Christoph Hellwig <h...@lst.de>
---
 fs/fcntl.c                       | 3 ++-
 include/uapi/asm-generic/fcntl.h | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/fcntl.c b/fs/fcntl.c
index e1c54f20325c..ca5d228be7ea 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -741,7 +741,7 @@ static int __init fcntl_init(void)
         * 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(21 - 1 /* for O_RDONLY being 0 */ != HWEIGHT32(
+       BUILD_BUG_ON(22 - 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 | */
@@ -749,6 +749,7 @@ static int __init fcntl_init(void)
                O_DIRECT        | O_LARGEFILE   | O_DIRECTORY   |
                O_NOFOLLOW      | O_NOATIME     | O_CLOEXEC     |
                __FMODE_EXEC    | O_PATH        | __O_TMPFILE   |
+               O_ATOMIC        |
                __FMODE_NONOTIFY
                ));
 
diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h
index e063effe0cc1..26ab7622238a 100644
--- a/include/uapi/asm-generic/fcntl.h
+++ b/include/uapi/asm-generic/fcntl.h
@@ -92,6 +92,8 @@
 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)
 #define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT)      
 
+#define O_ATOMIC       040000000
+
 #ifndef O_NDELAY
 #define O_NDELAY       O_NONBLOCK
 #endif
-- 
2.11.0