linux-ext4 - [RFC 1/8] fs: Add FS_XFLAG

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Date: Sat,  2 Mar 2024 13:11:58 +0530
From: "Ritesh Harjani (IBM)" <ritesh.list@...il.com>
To: linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org
Cc: Ojaswin Mujoo <ojaswin@...ux.ibm.com>,
	Jan Kara <jack@...e.cz>,
	Theodore Ts'o <tytso@....edu>,
	Matthew Wilcox <willy@...radead.org>,
	"Darrick J . Wong" <djwong@...nel.org>,
	Luis Chamberlain <mcgrof@...nel.org>,
	John Garry <john.g.garry@...cle.com>,
	linux-kernel@...r.kernel.org,
	Ritesh Harjani <ritesh.list@...il.com>
Subject: [RFC 1/8] fs: Add FS_XFLAG_ATOMICWRITES flag

From: John Garry <john.g.garry@...cle.com>

Add a flag indicating that a regular file is enabled for atomic writes.

Signed-off-by: John Garry <john.g.garry@...cle.com>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@...il.com>
---
 include/uapi/linux/fs.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index a0975ae81e64..b5b4e1db9576 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -140,6 +140,7 @@ struct fsxattr {
 #define FS_XFLAG_FILESTREAM	0x00004000	/* use filestream allocator */
 #define FS_XFLAG_DAX		0x00008000	/* use DAX for IO */
 #define FS_XFLAG_COWEXTSIZE	0x00010000	/* CoW extent size allocator hint */
+#define FS_XFLAG_ATOMICWRITES	0x00020000	/* atomic writes enabled */
 #define FS_XFLAG_HASATTR	0x80000000	/* no DIFLAG for this	*/
 
 /* the read-only stuff doesn't really belong here, but any other place is
-- 
2.43.0