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[XFS] Ondisk format extension for extended attributes (attr2). Basically,

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the data/attr forks now grow up/down from either end of the literal area,
rather than dividing the literal area into two chunks and growing both
upward.  Means we can now make much more efficient use of the attribute
space, incl. fitting DMF attributes inline in 256 byte inodes, and large
jumps in dbench3 performance numbers.  It is self enabling, but can be
forced on/off via the attr2/noattr2 mount options.

SGI-PV: 941645
SGI-Modid: xfs-linux:xfs-kern:23836a

Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
Nathan Scott 2005-11-02 10:35:46 +11:00
parent d8cc890d40
commit af4e34a527
1 changed files with 1 additions and 1 deletions
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2
fs/xfs/xfs_clnt.h
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@ -70,7 +70,7 @@ struct xfs_mount_args {
/*
* XFS mount option flags
*/
#define XFSMNT_CHKLOG 0x00000001 /* check log */
#define XFSMNT_COMPAT_ATTR 0x00000001 /* do not use ATTR2 format */
#define XFSMNT_WSYNC 0x00000002 /* safe mode nfs mount
* compatible */
#define XFSMNT_INO64 0x00000004 /* move inode numbers up