linux-kernel - [PATCH 3.2 22/87] fs: add new FMODE flags: FMODE_32bithash and FMODE

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Date:	Mon, 25 Nov 2013 13:44:29 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Jonathan Nieder" <jrnieder@...il.com>,
	"Bernd Schubert" <bernd.schubert@...m.fraunhofer.de>,
	"Theodore Ts'o" <tytso@....edu>
Subject: [PATCH 3.2 22/87] fs: add new FMODE flags: FMODE_32bithash and
 FMODE_64bithash

3.2.53-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Bernd Schubert <bernd.schubert@...m.fraunhofer.de>

commit 6a8a13e03861c0ab83ab07d573ca793cff0e5d00 upstream.

Those flags are supposed to be set by NFS readdir() to tell ext3/ext4
to 32bit (NFSv2) or 64bit hash values (offsets) in seekdir().

Signed-off-by: Bernd Schubert <bernd.schubert@...m.fraunhofer.de>
Signed-off-by: "Theodore Ts'o" <tytso@....edu>
Signed-off-by: Jonathan Nieder <jrnieder@...il.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 include/linux/fs.h |    4 ++++
 1 file changed, 4 insertions(+)

--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -92,6 +92,10 @@ struct inodes_stat_t {
 /* File is opened using open(.., 3, ..) and is writeable only for ioctls
    (specialy hack for floppy.c) */
 #define FMODE_WRITE_IOCTL	((__force fmode_t)0x100)
+/* 32bit hashes as llseek() offset (for directories) */
+#define FMODE_32BITHASH         ((__force fmode_t)0x200)
+/* 64bit hashes as llseek() offset (for directories) */
+#define FMODE_64BITHASH         ((__force fmode_t)0x400)
 
 /*
  * Don't update ctime and mtime.

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