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[XFS] Pick a single default inode cluster size. 

Remove scaling of inode "clusters" based on machine memory; small cluster
cut-point was an unrealistic 32MB and was probably never tested.

Removes another user of xfs_physmem.

SGI-PV: 968563
SGI-Modid: xfs-linux-melb:xfs-kern:29324a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
This commit is contained in:
Eric Sandeen 2007-08-16 16:24:55 +10:00 committed by Tim Shimmin
parent 1cb5125875
commit 425f9ddd53
2 changed files with 5 additions and 13 deletions
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7
fs/xfs/xfs_ialloc.h
View File

@ -30,14 +30,9 @@ struct xfs_trans;
#define XFS_IALLOC_BLOCKS(mp) (mp)->m_ialloc_blks
/*
* For small block file systems, move inodes in clusters of this size.
* When we don't have a lot of memory, however, we go a bit smaller
* to reduce the number of AGI and ialloc btree blocks we need to keep
* around for xfs_dilocate(). We choose which one to use in
* xfs_mount_int().
* Move inodes in clusters of this size.
*/
#define XFS_INODE_BIG_CLUSTER_SIZE 8192
#define XFS_INODE_SMALL_CLUSTER_SIZE 4096
#define XFS_INODE_CLUSTER_SIZE(mp) (mp)->m_inode_cluster_size
/*

9
fs/xfs/xfs_mount.c
View File

@ -885,15 +885,12 @@ xfs_mountfs(
mp->m_writeio_blocks = 1 << (mp->m_writeio_log - sbp->sb_blocklog);
/*
* Set the inode cluster size based on the physical memory
* size. This may still be overridden by the file system
* Set the inode cluster size.
* This may still be overridden by the file system
* block size if it is larger than the chosen cluster size.
*/
if (xfs_physmem <= btoc(32 * 1024 * 1024)) { /* <= 32 MB */
mp->m_inode_cluster_size = XFS_INODE_SMALL_CLUSTER_SIZE;
} else {
mp->m_inode_cluster_size = XFS_INODE_BIG_CLUSTER_SIZE;
}
/*
* Set whether we're using inode alignment.
*/