From d8cc890d4095f1eaa7f411a85051015b21262b12 Mon Sep 17 00:00:00 2001 From: Nathan Scott Date: Wed, 2 Nov 2005 10:34:53 +1100 Subject: [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 --- fs/xfs/xfs_mount.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'fs/xfs/xfs_mount.c') diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 12f10d5c3d9..a93ef802db6 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000-2004 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 @@ -584,12 +584,13 @@ xfs_mount_common(xfs_mount_t *mp, xfs_sb_t *sbp) ASSERT(sbp->sb_inodesize >= 256 && sbp->sb_inodesize <= 2048); switch (sbp->sb_inodesize) { case 256: - mp->m_attroffset = XFS_LITINO(mp) - XFS_BMDR_SPACE_CALC(2); + mp->m_attroffset = XFS_LITINO(mp) - + XFS_BMDR_SPACE_CALC(MINABTPTRS); break; case 512: case 1024: case 2048: - mp->m_attroffset = XFS_BMDR_SPACE_CALC(12); + mp->m_attroffset = XFS_BMDR_SPACE_CALC(6 * MINABTPTRS); break; default: ASSERT(0); -- cgit v1.2.3