[XFS] Update XFS documentation.

Documentation/Changes

@@ -56,7 +56,7 @@ o  module-init-tools      0.9.10                  # depmod -V
 o  e2fsprogs              1.29                    # tune2fs
 o  jfsutils               1.1.3                   # fsck.jfs -V
 o  reiserfsprogs          3.6.3                   # reiserfsck -V 2>&1|grep reiserfsprogs
-o  xfsprogs               2.1.0                   # xfs_db -V
+o  xfsprogs               2.6.0                   # xfs_db -V
 o  pcmcia-cs              3.1.21                  # cardmgr -V
 o  quota-tools            3.09                    # quota -V
 o  PPP                    2.4.0                   # pppd --version
@@ -183,9 +183,8 @@ Xfsprogs
 The latest version of xfsprogs contains mkfs.xfs, xfs_db, and the
 xfs_repair utilities, among others, for the XFS filesystem.  It is
 architecture independent and any version from 2.0.0 onward should
-work correctly with this version of the XFS kernel code.  For the new
-(v2) log format that has better support for stripe-size aligning on
-LVM and MD devices at least xfsprogs 2.1.0 is needed.
+work correctly with this version of the XFS kernel code (2.6.0 or
+later is recommended, due to some significant improvements).
 
 
 Pcmcia-cs
@@ -359,7 +358,7 @@ o  <http://www.namesys.com/pub/reiserfsprogs/reiserfsprogs-3.6.3.tar.gz>
 
 Xfsprogs
 --------
-o  <ftp://oss.sgi.com/projects/xfs/download/cmd_tars/xfsprogs-2.1.0.src.tar.gz>
+o  <ftp://oss.sgi.com/projects/xfs/download/>
 
 Pcmcia-cs
 ---------

Documentation/filesystems/xfs.txt

@@ -29,10 +29,11 @@ When mounting an XFS filesystem, the following options are accepted.
 	The preferred buffered I/O size can also be altered on an
 	individual file basis using the ioctl(2) system call.
 
-  ikeep
+  ikeep/noikeep
 	When inode clusters are emptied of inodes, keep them around
-	on the disk, this is the old XFS behavior. Default is now to
-	return the inode cluster to the free space pool.
+	on the disk (ikeep) - this is the traditional XFS behaviour
+	and is still the default for now.  Using the noikeep option,
+	inode clusters are returned to the free space pool.
 
   logbufs=value
 	Set the number of in-memory log buffers.  Valid numbers range
@@ -75,6 +76,10 @@ When mounting an XFS filesystem, the following options are accepted.
 	Filesystems mounted "norecovery" must be mounted read-only or
 	the mount will fail.
 
+  nouuid
+	Don't check for double mounted file systems using the file system uuid.
+	This is useful to mount LVM snapshot volumes.
+
   osyncisosync
 	Make O_SYNC writes implement true O_SYNC.  WITHOUT this option,
 	Linux XFS behaves as if an "osyncisdsync" option is used,
@@ -108,10 +113,6 @@ When mounting an XFS filesystem, the following options are accepted.
 	The "swidth" option is required if the "sunit" option has been
 	specified, and must be a multiple of the "sunit" value.
 
-  nouuid
-        Don't check for double mounted file systems using the file system uuid.
-        This is useful to mount LVM snapshot volumes.
-
 sysctls
 =======
 
@@ -139,14 +140,14 @@ The following sysctls are available for the XFS filesystem:
 	Causes certain error conditions to call BUG(). Value is a bitmask; 
 	AND together the tags which represent errors which should cause panics:
 	
-		XFS_NO_PTAG                     0LL
-		XFS_PTAG_IFLUSH                 0x0000000000000001LL
-		XFS_PTAG_LOGRES                 0x0000000000000002LL
-		XFS_PTAG_AILDELETE              0x0000000000000004LL
-		XFS_PTAG_ERROR_REPORT           0x0000000000000008LL
-		XFS_PTAG_SHUTDOWN_CORRUPT       0x0000000000000010LL
-		XFS_PTAG_SHUTDOWN_IOERROR       0x0000000000000020LL
-		XFS_PTAG_SHUTDOWN_LOGERROR      0x0000000000000040LL
+		XFS_NO_PTAG                     0
+		XFS_PTAG_IFLUSH                 0x00000001
+		XFS_PTAG_LOGRES                 0x00000002
+		XFS_PTAG_AILDELETE              0x00000004
+		XFS_PTAG_ERROR_REPORT           0x00000008
+		XFS_PTAG_SHUTDOWN_CORRUPT       0x00000010
+		XFS_PTAG_SHUTDOWN_IOERROR       0x00000020
+		XFS_PTAG_SHUTDOWN_LOGERROR      0x00000040
 
 	This option is intended for debugging only.		
 
@@ -165,6 +166,21 @@ The following sysctls are available for the XFS filesystem:
   	Controls whether unprivileged users can use chown to "give away"
 	a file to another user.
 
+  fs.xfs.inherit_sync		(Min: 0  Default: 1  Max 1)
+	Setting this to "1" will cause the "sync" flag set 
+	by the chattr(1) command on a directory to be
+	inherited by files in that directory.
+
+  fs.xfs.inherit_nodump		(Min: 0  Default: 1  Max 1)
+	Setting this to "1" will cause the "nodump" flag set 
+	by the chattr(1) command on a directory to be
+	inherited by files in that directory.
+
+  fs.xfs.inherit_noatime	(Min: 0  Default: 1  Max 1)
+	Setting this to "1" will cause the "noatime" flag set 
+	by the chattr(1) command on a directory to be
+	inherited by files in that directory.
+
   vm.pagebuf.stats_clear	(Min: 0  Default: 0  Max: 1)
 	Setting this to "1" clears accumulated pagebuf statistics 
 	in /proc/fs/pagebuf/stat.  It then immediately reset to "0".