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Message-Id: <20060825144940.30722.37394.stgit@warthog.cambridge.redhat.com>
Date: Fri, 25 Aug 2006 15:49:40 +0100
From: David Howells <dhowells@...hat.com>
To: axboe@...nel.dk
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
dhowells@...hat.com
Subject: [PATCH 11/18] [PATCH] BLOCK: Move common FS-specific ioctls to linux/fs.h [try #3]
From: David Howells <dhowells@...hat.com>
Move common FS-specific ioctls from linux/ext2_fs.h to linux/fs.h as FS_IOC_*
and FS_IOC32_* and have the users of them use those as a base.
Also move the GETFLAGS/SETFLAGS flags to linux/fs.h as FS_*_FL macros, and then
have the other users use them as a base.
Signed-Off-By: David Howells <dhowells@...hat.com>
---
fs/cifs/ioctl.c | 7 ++---
fs/compat_ioctl.c | 15 ----------
fs/hfsplus/hfsplus_fs.h | 8 +----
fs/hfsplus/ioctl.c | 17 +++++------
fs/jfs/ioctl.c | 15 +++++-----
include/linux/ext2_fs.h | 66 ++++++++++++++++++++++++-------------------
include/linux/ext3_fs.h | 20 ++++++++++---
include/linux/fs.h | 39 +++++++++++++++++++++++++
include/linux/reiserfs_fs.h | 28 ++++++++----------
9 files changed, 125 insertions(+), 90 deletions(-)
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index b0ea668..e34c7db 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -22,7 +22,6 @@
*/
#include <linux/fs.h>
-#include <linux/ext2_fs.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
@@ -74,7 +73,7 @@ #endif /* CONFIG_CIFS_POSIX */
}
break;
#ifdef CONFIG_CIFS_POSIX
- case EXT2_IOC_GETFLAGS:
+ case FS_IOC_GETFLAGS:
if(CIFS_UNIX_EXTATTR_CAP & caps) {
if (pSMBFile == NULL)
break;
@@ -82,12 +81,12 @@ #ifdef CONFIG_CIFS_POSIX
&ExtAttrBits, &ExtAttrMask);
if(rc == 0)
rc = put_user(ExtAttrBits &
- EXT2_FL_USER_VISIBLE,
+ FS_FL_USER_VISIBLE,
(int __user *)arg);
}
break;
- case EXT2_IOC_SETFLAGS:
+ case FS_IOC_SETFLAGS:
if(CIFS_UNIX_EXTATTR_CAP & caps) {
if(get_user(ExtAttrBits,(int __user *)arg)) {
rc = -EFAULT;
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index d33a2b1..c4d2849 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -123,21 +123,6 @@ #include <linux/dvb/frontend.h>
#include <linux/dvb/video.h>
#include <linux/lp.h>
-/* Aiee. Someone does not find a difference between int and long */
-#define EXT2_IOC32_GETFLAGS _IOR('f', 1, int)
-#define EXT2_IOC32_SETFLAGS _IOW('f', 2, int)
-#define EXT3_IOC32_GETVERSION _IOR('f', 3, int)
-#define EXT3_IOC32_SETVERSION _IOW('f', 4, int)
-#define EXT3_IOC32_GETRSVSZ _IOR('f', 5, int)
-#define EXT3_IOC32_SETRSVSZ _IOW('f', 6, int)
-#define EXT3_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int)
-#ifdef CONFIG_JBD_DEBUG
-#define EXT3_IOC32_WAIT_FOR_READONLY _IOR('f', 99, int)
-#endif
-
-#define EXT2_IOC32_GETVERSION _IOR('v', 1, int)
-#define EXT2_IOC32_SETVERSION _IOW('v', 2, int)
-
static int do_ioctl32_pointer(unsigned int fd, unsigned int cmd,
unsigned long arg, struct file *f)
{
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index 8a1ca5e..3915635 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -246,12 +246,8 @@ #define hfs_part_find hfsplus_part_find
/* ext2 ioctls (EXT2_IOC_GETFLAGS and EXT2_IOC_SETFLAGS) to support
* chattr/lsattr */
-#define HFSPLUS_IOC_EXT2_GETFLAGS _IOR('f', 1, long)
-#define HFSPLUS_IOC_EXT2_SETFLAGS _IOW('f', 2, long)
-
-#define EXT2_FLAG_IMMUTABLE 0x00000010 /* Immutable file */
-#define EXT2_FLAG_APPEND 0x00000020 /* writes to file may only append */
-#define EXT2_FLAG_NODUMP 0x00000040 /* do not dump file */
+#define HFSPLUS_IOC_EXT2_GETFLAGS FS_IOC_GETFLAGS
+#define HFSPLUS_IOC_EXT2_SETFLAGS FS_IOC_SETFLAGS
/*
diff --git a/fs/hfsplus/ioctl.c b/fs/hfsplus/ioctl.c
index 13cf848..79fd104 100644
--- a/fs/hfsplus/ioctl.c
+++ b/fs/hfsplus/ioctl.c
@@ -28,11 +28,11 @@ int hfsplus_ioctl(struct inode *inode, s
case HFSPLUS_IOC_EXT2_GETFLAGS:
flags = 0;
if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_IMMUTABLE)
- flags |= EXT2_FLAG_IMMUTABLE; /* EXT2_IMMUTABLE_FL */
+ flags |= FS_IMMUTABLE_FL; /* EXT2_IMMUTABLE_FL */
if (HFSPLUS_I(inode).rootflags & HFSPLUS_FLG_APPEND)
- flags |= EXT2_FLAG_APPEND; /* EXT2_APPEND_FL */
+ flags |= FS_APPEND_FL; /* EXT2_APPEND_FL */
if (HFSPLUS_I(inode).userflags & HFSPLUS_FLG_NODUMP)
- flags |= EXT2_FLAG_NODUMP; /* EXT2_NODUMP_FL */
+ flags |= FS_NODUMP_FL; /* EXT2_NODUMP_FL */
return put_user(flags, (int __user *)arg);
case HFSPLUS_IOC_EXT2_SETFLAGS: {
if (IS_RDONLY(inode))
@@ -44,32 +44,31 @@ int hfsplus_ioctl(struct inode *inode, s
if (get_user(flags, (int __user *)arg))
return -EFAULT;
- if (flags & (EXT2_FLAG_IMMUTABLE|EXT2_FLAG_APPEND) ||
+ if (flags & (FS_IMMUTABLE_FL|FS_APPEND_FL) ||
HFSPLUS_I(inode).rootflags & (HFSPLUS_FLG_IMMUTABLE|HFSPLUS_FLG_APPEND)) {
if (!capable(CAP_LINUX_IMMUTABLE))
return -EPERM;
}
/* don't silently ignore unsupported ext2 flags */
- if (flags & ~(EXT2_FLAG_IMMUTABLE|EXT2_FLAG_APPEND|
- EXT2_FLAG_NODUMP))
+ if (flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL))
return -EOPNOTSUPP;
- if (flags & EXT2_FLAG_IMMUTABLE) { /* EXT2_IMMUTABLE_FL */
+ if (flags & FS_IMMUTABLE_FL) { /* EXT2_IMMUTABLE_FL */
inode->i_flags |= S_IMMUTABLE;
HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_IMMUTABLE;
} else {
inode->i_flags &= ~S_IMMUTABLE;
HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_IMMUTABLE;
}
- if (flags & EXT2_FLAG_APPEND) { /* EXT2_APPEND_FL */
+ if (flags & FS_APPEND_FL) { /* EXT2_APPEND_FL */
inode->i_flags |= S_APPEND;
HFSPLUS_I(inode).rootflags |= HFSPLUS_FLG_APPEND;
} else {
inode->i_flags &= ~S_APPEND;
HFSPLUS_I(inode).rootflags &= ~HFSPLUS_FLG_APPEND;
}
- if (flags & EXT2_FLAG_NODUMP) /* EXT2_NODUMP_FL */
+ if (flags & FS_NODUMP_FL) /* EXT2_NODUMP_FL */
HFSPLUS_I(inode).userflags |= HFSPLUS_FLG_NODUMP;
else
HFSPLUS_I(inode).userflags &= ~HFSPLUS_FLG_NODUMP;
diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c
index 67b3774..37db524 100644
--- a/fs/jfs/ioctl.c
+++ b/fs/jfs/ioctl.c
@@ -6,7 +6,6 @@
*/
#include <linux/fs.h>
-#include <linux/ext2_fs.h>
#include <linux/ctype.h>
#include <linux/capability.h>
#include <linux/time.h>
@@ -22,13 +21,13 @@ static struct {
long jfs_flag;
long ext2_flag;
} jfs_map[] = {
- {JFS_NOATIME_FL, EXT2_NOATIME_FL},
- {JFS_DIRSYNC_FL, EXT2_DIRSYNC_FL},
- {JFS_SYNC_FL, EXT2_SYNC_FL},
- {JFS_SECRM_FL, EXT2_SECRM_FL},
- {JFS_UNRM_FL, EXT2_UNRM_FL},
- {JFS_APPEND_FL, EXT2_APPEND_FL},
- {JFS_IMMUTABLE_FL, EXT2_IMMUTABLE_FL},
+ {JFS_NOATIME_FL, FS_NOATIME_FL},
+ {JFS_DIRSYNC_FL, FS_DIRSYNC_FL},
+ {JFS_SYNC_FL, FS_SYNC_FL},
+ {JFS_SECRM_FL, FS_SECRM_FL},
+ {JFS_UNRM_FL, FS_UNRM_FL},
+ {JFS_APPEND_FL, FS_APPEND_FL},
+ {JFS_IMMUTABLE_FL, FS_IMMUTABLE_FL},
{0, 0},
};
diff --git a/include/linux/ext2_fs.h b/include/linux/ext2_fs.h
index facf34e..9996d2e 100644
--- a/include/linux/ext2_fs.h
+++ b/include/linux/ext2_fs.h
@@ -169,41 +169,49 @@ #define EXT2_TIND_BLOCK (EXT2_DIND_BLO
#define EXT2_N_BLOCKS (EXT2_TIND_BLOCK + 1)
/*
- * Inode flags
- */
-#define EXT2_SECRM_FL 0x00000001 /* Secure deletion */
-#define EXT2_UNRM_FL 0x00000002 /* Undelete */
-#define EXT2_COMPR_FL 0x00000004 /* Compress file */
-#define EXT2_SYNC_FL 0x00000008 /* Synchronous updates */
-#define EXT2_IMMUTABLE_FL 0x00000010 /* Immutable file */
-#define EXT2_APPEND_FL 0x00000020 /* writes to file may only append */
-#define EXT2_NODUMP_FL 0x00000040 /* do not dump file */
-#define EXT2_NOATIME_FL 0x00000080 /* do not update atime */
+ * Inode flags (GETFLAGS/SETFLAGS)
+ */
+#define EXT2_SECRM_FL FS_SECRM_FL /* Secure deletion */
+#define EXT2_UNRM_FL FS_UNRM_FL /* Undelete */
+#define EXT2_COMPR_FL FS_COMPR_FL /* Compress file */
+#define EXT2_SYNC_FL FS_SYNC_FL /* Synchronous updates */
+#define EXT2_IMMUTABLE_FL FS_IMMUTABLE_FL /* Immutable file */
+#define EXT2_APPEND_FL FS_APPEND_FL /* writes to file may only append */
+#define EXT2_NODUMP_FL FS_NODUMP_FL /* do not dump file */
+#define EXT2_NOATIME_FL FS_NOATIME_FL /* do not update atime */
/* Reserved for compression usage... */
-#define EXT2_DIRTY_FL 0x00000100
-#define EXT2_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
-#define EXT2_NOCOMP_FL 0x00000400 /* Don't compress */
-#define EXT2_ECOMPR_FL 0x00000800 /* Compression error */
+#define EXT2_DIRTY_FL FS_DIRTY_FL
+#define EXT2_COMPRBLK_FL FS_COMPRBLK_FL /* One or more compressed clusters */
+#define EXT2_NOCOMP_FL FS_NOCOMP_FL /* Don't compress */
+#define EXT2_ECOMPR_FL FS_ECOMPR_FL /* Compression error */
/* End compression flags --- maybe not all used */
-#define EXT2_BTREE_FL 0x00001000 /* btree format dir */
-#define EXT2_INDEX_FL 0x00001000 /* hash-indexed directory */
-#define EXT2_IMAGIC_FL 0x00002000 /* AFS directory */
-#define EXT2_JOURNAL_DATA_FL 0x00004000 /* Reserved for ext3 */
-#define EXT2_NOTAIL_FL 0x00008000 /* file tail should not be merged */
-#define EXT2_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
-#define EXT2_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
-#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
-
-#define EXT2_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
-#define EXT2_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
+#define EXT2_BTREE_FL FS_BTREE_FL /* btree format dir */
+#define EXT2_INDEX_FL FS_INDEX_FL /* hash-indexed directory */
+#define EXT2_IMAGIC_FL FS_IMAGIC_FL /* AFS directory */
+#define EXT2_JOURNAL_DATA_FL FS_JOURNAL_DATA_FL /* Reserved for ext3 */
+#define EXT2_NOTAIL_FL FS_NOTAIL_FL /* file tail should not be merged */
+#define EXT2_DIRSYNC_FL FS_DIRSYNC_FL /* dirsync behaviour (directories only) */
+#define EXT2_TOPDIR_FL FS_TOPDIR_FL /* Top of directory hierarchies*/
+#define EXT2_RESERVED_FL FS_RESERVED_FL /* reserved for ext2 lib */
+
+#define EXT2_FL_USER_VISIBLE FS_FL_USER_VISIBLE /* User visible flags */
+#define EXT2_FL_USER_MODIFIABLE FS_FL_USER_MODIFIABLE /* User modifiable flags */
/*
* ioctl commands
*/
-#define EXT2_IOC_GETFLAGS _IOR('f', 1, long)
-#define EXT2_IOC_SETFLAGS _IOW('f', 2, long)
-#define EXT2_IOC_GETVERSION _IOR('v', 1, long)
-#define EXT2_IOC_SETVERSION _IOW('v', 2, long)
+#define EXT2_IOC_GETFLAGS FS_IOC_GETFLAGS
+#define EXT2_IOC_SETFLAGS FS_IOC_SETFLAGS
+#define EXT2_IOC_GETVERSION FS_IOC_GETVERSION
+#define EXT2_IOC_SETVERSION FS_IOC_SETVERSION
+
+/*
+ * ioctl commands in 32 bit emulation
+ */
+#define EXT2_IOC32_GETFLAGS FS_IOC32_GETFLAGS
+#define EXT2_IOC32_SETFLAGS FS_IOC32_SETFLAGS
+#define EXT2_IOC32_GETVERSION FS_IOC32_GETVERSION
+#define EXT2_IOC32_SETVERSION FS_IOC32_SETVERSION
/*
* Structure of an inode on the disk
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index 9f9cce7..90cfba2 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -220,14 +220,14 @@ struct ext3_new_group_data {
/*
* ioctl commands
*/
-#define EXT3_IOC_GETFLAGS _IOR('f', 1, long)
-#define EXT3_IOC_SETFLAGS _IOW('f', 2, long)
+#define EXT3_IOC_GETFLAGS FS_IOC_GETFLAGS
+#define EXT3_IOC_SETFLAGS FS_IOC_SETFLAGS
#define EXT3_IOC_GETVERSION _IOR('f', 3, long)
#define EXT3_IOC_SETVERSION _IOW('f', 4, long)
#define EXT3_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long)
#define EXT3_IOC_GROUP_ADD _IOW('f', 8,struct ext3_new_group_input)
-#define EXT3_IOC_GETVERSION_OLD _IOR('v', 1, long)
-#define EXT3_IOC_SETVERSION_OLD _IOW('v', 2, long)
+#define EXT3_IOC_GETVERSION_OLD FS_IOC_GETVERSION
+#define EXT3_IOC_SETVERSION_OLD FS_IOC_SETVERSION
#ifdef CONFIG_JBD_DEBUG
#define EXT3_IOC_WAIT_FOR_READONLY _IOR('f', 99, long)
#endif
@@ -235,6 +235,18 @@ #define EXT3_IOC_GETRSVSZ _IOR('f', 5,
#define EXT3_IOC_SETRSVSZ _IOW('f', 6, long)
/*
+ * ioctl commands in 32 bit emulation
+ */
+#define EXT3_IOC32_GETVERSION _IOR('f', 3, int)
+#define EXT3_IOC32_SETVERSION _IOW('f', 4, int)
+#define EXT3_IOC32_GETRSVSZ _IOR('f', 5, int)
+#define EXT3_IOC32_SETRSVSZ _IOW('f', 6, int)
+#define EXT3_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int)
+#ifdef CONFIG_JBD_DEBUG
+#define EXT3_IOC32_WAIT_FOR_READONLY _IOR('f', 99, int)
+#endif
+
+/*
* Mount options
*/
struct ext3_mount_options {
diff --git a/include/linux/fs.h b/include/linux/fs.h
index cd7fc6a..63d3126 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -216,6 +216,45 @@ #define BMAP_IOCTL 1 /* obsolete - kept
#define FIBMAP _IO(0x00,1) /* bmap access */
#define FIGETBSZ _IO(0x00,2) /* get the block size used for bmap */
+#define FS_IOC_GETFLAGS _IOR('f', 1, long)
+#define FS_IOC_SETFLAGS _IOW('f', 2, long)
+#define FS_IOC_GETVERSION _IOR('v', 1, long)
+#define FS_IOC_SETVERSION _IOW('v', 2, long)
+#define FS_IOC32_GETFLAGS _IOR('f', 1, int)
+#define FS_IOC32_SETFLAGS _IOW('f', 2, int)
+#define FS_IOC32_GETVERSION _IOR('v', 1, int)
+#define FS_IOC32_SETVERSION _IOW('v', 2, int)
+
+/*
+ * Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS)
+ */
+#define FS_SECRM_FL 0x00000001 /* Secure deletion */
+#define FS_UNRM_FL 0x00000002 /* Undelete */
+#define FS_COMPR_FL 0x00000004 /* Compress file */
+#define FS_SYNC_FL 0x00000008 /* Synchronous updates */
+#define FS_IMMUTABLE_FL 0x00000010 /* Immutable file */
+#define FS_APPEND_FL 0x00000020 /* writes to file may only append */
+#define FS_NODUMP_FL 0x00000040 /* do not dump file */
+#define FS_NOATIME_FL 0x00000080 /* do not update atime */
+/* Reserved for compression usage... */
+#define FS_DIRTY_FL 0x00000100
+#define FS_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
+#define FS_NOCOMP_FL 0x00000400 /* Don't compress */
+#define FS_ECOMPR_FL 0x00000800 /* Compression error */
+/* End compression flags --- maybe not all used */
+#define FS_BTREE_FL 0x00001000 /* btree format dir */
+#define FS_INDEX_FL 0x00001000 /* hash-indexed directory */
+#define FS_IMAGIC_FL 0x00002000 /* AFS directory */
+#define FS_JOURNAL_DATA_FL 0x00004000 /* Reserved for ext3 */
+#define FS_NOTAIL_FL 0x00008000 /* file tail should not be merged */
+#define FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
+#define FS_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
+#define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
+
+#define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
+#define FS_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
+
+
#define SYNC_FILE_RANGE_WAIT_BEFORE 1
#define SYNC_FILE_RANGE_WRITE 2
#define SYNC_FILE_RANGE_WAIT_AFTER 4
diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h
index daa2d83..54c3054 100644
--- a/include/linux/reiserfs_fs.h
+++ b/include/linux/reiserfs_fs.h
@@ -813,21 +813,19 @@ #define sd_v1_first_direct_byte(sdp) \
#define set_sd_v1_first_direct_byte(sdp,v) \
((sdp)->sd_first_direct_byte = cpu_to_le32(v))
-#include <linux/ext2_fs.h>
-
/* inode flags stored in sd_attrs (nee sd_reserved) */
/* we want common flags to have the same values as in ext2,
so chattr(1) will work without problems */
-#define REISERFS_IMMUTABLE_FL EXT2_IMMUTABLE_FL
-#define REISERFS_APPEND_FL EXT2_APPEND_FL
-#define REISERFS_SYNC_FL EXT2_SYNC_FL
-#define REISERFS_NOATIME_FL EXT2_NOATIME_FL
-#define REISERFS_NODUMP_FL EXT2_NODUMP_FL
-#define REISERFS_SECRM_FL EXT2_SECRM_FL
-#define REISERFS_UNRM_FL EXT2_UNRM_FL
-#define REISERFS_COMPR_FL EXT2_COMPR_FL
-#define REISERFS_NOTAIL_FL EXT2_NOTAIL_FL
+#define REISERFS_IMMUTABLE_FL FS_IMMUTABLE_FL
+#define REISERFS_APPEND_FL FS_APPEND_FL
+#define REISERFS_SYNC_FL FS_SYNC_FL
+#define REISERFS_NOATIME_FL FS_NOATIME_FL
+#define REISERFS_NODUMP_FL FS_NODUMP_FL
+#define REISERFS_SECRM_FL FS_SECRM_FL
+#define REISERFS_UNRM_FL FS_UNRM_FL
+#define REISERFS_COMPR_FL FS_COMPR_FL
+#define REISERFS_NOTAIL_FL FS_NOTAIL_FL
/* persistent flags that file inherits from the parent directory */
#define REISERFS_INHERIT_MASK ( REISERFS_IMMUTABLE_FL | \
@@ -2174,10 +2172,10 @@ int reiserfs_ioctl(struct inode *inode,
#define REISERFS_IOC_UNPACK _IOW(0xCD,1,long)
/* define following flags to be the same as in ext2, so that chattr(1),
lsattr(1) will work with us. */
-#define REISERFS_IOC_GETFLAGS EXT2_IOC_GETFLAGS
-#define REISERFS_IOC_SETFLAGS EXT2_IOC_SETFLAGS
-#define REISERFS_IOC_GETVERSION EXT2_IOC_GETVERSION
-#define REISERFS_IOC_SETVERSION EXT2_IOC_SETVERSION
+#define REISERFS_IOC_GETFLAGS FS_IOC_GETFLAGS
+#define REISERFS_IOC_SETFLAGS FS_IOC_SETFLAGS
+#define REISERFS_IOC_GETVERSION FS_IOC_GETVERSION
+#define REISERFS_IOC_SETVERSION FS_IOC_SETVERSION
/* Locking primitives */
/* Right now we are still falling back to (un)lock_kernel, but eventually that
-
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