[PATCH 3/7] xfsdocs: update the on-disk format with changes for Linux 4.5
"Darrick J. Wong" <[email protected]>
| Newsgroups | gmane.comp.file-systems.xfs.general |
|---|---|
| Message-ID | <[email protected]> |
Signed-off-by: Darrick J. Wong <[email protected]> --- .../XFS_Filesystem_Structure/ondisk_inode.asciidoc | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/design/XFS_Filesystem_Structure/ondisk_inode.asciidoc b/design/XFS_Filesystem_Structure/ondisk_inode.asciidoc index 4aabc55..dc1fad2 100644 --- a/design/XFS_Filesystem_Structure/ondisk_inode.asciidoc +++ b/design/XFS_Filesystem_Structure/ondisk_inode.asciidoc @@ -66,9 +66,10 @@ of the literal area and +di_forkoff+. The attribute fork is located between [[Inode_Core]] == Inode Core -The inode's core is 96 bytes in size and contains information about the file -itself including most stat data information about data and attribute forks after -the core within the inode. It uses the following structure: +The inode's core is 96 bytes on a V4 filesystem and 176 bytes on a V5 +filesystem. It contains information about the file itself including most stat +data information about data and attribute forks after the core within the +inode. It uses the following structure: [source, c] ---- @@ -313,8 +314,16 @@ Counts the number of changes made to the attributes in this inode. Log sequence number of the last inode write. *di_flags2*:: -Specifies extended flags associated with a v3 inode. There are no flags defined -currently. +Specifies extended flags associated with a v3 inode. + +.Version 3 Inode flags +[options="header"] +|===== +| Flag | Description +| +XFS_DIFLAG2_DAX+ | +For a file, enable DAX to increase performance on persistent-memory storage. +If set on a directory, files created in the directory will inherit this flag. +|===== *di_pad2*:: Padding for future expansion of the inode. _______________________________________________ xfs mailing list [email protected] http://oss.sgi.com/mailman/listinfo/xfs