diff options
| author | Nathan Scott <nathans@sgi.com> | 2005-11-02 10:34:53 +1100 |
|---|---|---|
| committer | Nathan Scott <nathans@sgi.com> | 2005-11-02 10:34:53 +1100 |
| commit | d8cc890d4095f1eaa7f411a85051015b21262b12 (patch) | |
| tree | e13bec06a94a8dc5552dab733e90ef4f4d41fb8b /fs/xfs/xfs_types.h | |
| parent | aa82daa06198b27963fe3d6ee8035855b29f6524 (diff) | |
[XFS] Ondisk format extension for extended attributes (attr2). Basically,
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:23835a
Signed-off-by: Nathan Scott <nathans@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_types.h')
| -rw-r--r-- | fs/xfs/xfs_types.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/xfs/xfs_types.h b/fs/xfs/xfs_types.h index 16f5371ce102..33a888e6b3f2 100644 --- a/fs/xfs/xfs_types.h +++ b/fs/xfs/xfs_types.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as @@ -154,6 +154,12 @@ typedef __uint8_t xfs_arch_t; /* architecture of an xfs fs */ #define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */ /* + * Min numbers of data/attr fork btree root pointers. + */ +#define MINDBTPTRS 3 +#define MINABTPTRS 2 + +/* * MAXNAMELEN is the length (including the terminating null) of * the longest permissible file (component) name. */ |