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authorDavid Chinner <dgc@sgi.com>2008-05-20 11:30:15 +1000
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>2008-05-23 15:26:15 +1000
commitc8f5f12e46f079a954d4f7163ba59dadee08ca26 (patch)
treeaf2f74b28429313db0a13a71b0be8d0351e53e5d /fs/xfs
parent49383b0e98ad1f69ff4c816eb1961f703df12318 (diff)
downloadop-kernel-dev-c8f5f12e46f079a954d4f7163ba59dadee08ca26.zip
op-kernel-dev-c8f5f12e46f079a954d4f7163ba59dadee08ca26.tar.gz
[XFS] Fix inode list allocation size in writeback.
We only need to allocate space for the number of inodes in the cluster when writing back inodes, not every byte in the inode cluster. This reduces the amount of memory needing to be allocated to 256 bytes instead of 64k. SGI-PV: 981949 SGI-Modid: xfs-linux-melb:xfs-kern:31182a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_inode.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 739ea45..e569bf5 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2974,6 +2974,7 @@ xfs_iflush_cluster(
xfs_mount_t *mp = ip->i_mount;
xfs_perag_t *pag = xfs_get_perag(mp, ip->i_ino);
unsigned long first_index, mask;
+ unsigned long inodes_per_cluster;
int ilist_size;
xfs_inode_t **ilist;
xfs_inode_t *iq;
@@ -2985,7 +2986,8 @@ xfs_iflush_cluster(
ASSERT(pag->pagi_inodeok);
ASSERT(pag->pag_ici_init);
- ilist_size = XFS_INODE_CLUSTER_SIZE(mp) * sizeof(xfs_inode_t *);
+ inodes_per_cluster = XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog;
+ ilist_size = inodes_per_cluster * sizeof(xfs_inode_t *);
ilist = kmem_alloc(ilist_size, KM_MAYFAIL|KM_NOFS);
if (!ilist)
return 0;
@@ -2995,8 +2997,7 @@ xfs_iflush_cluster(
read_lock(&pag->pag_ici_lock);
/* really need a gang lookup range call here */
nr_found = radix_tree_gang_lookup(&pag->pag_ici_root, (void**)ilist,
- first_index,
- XFS_INODE_CLUSTER_SIZE(mp));
+ first_index, inodes_per_cluster);
if (nr_found == 0)
goto out_free;
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