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authorSage Weil <sage@newdream.net>2010-11-16 11:14:34 -0800
committerSage Weil <sage@newdream.net>2011-01-12 15:15:12 -0800
commit6c0f3af72cb1622a66962a1180c36ef8c41be8e2 (patch)
tree66e415bf31ea31a3e9360c0ce624fd20b6050c89 /fs/ceph/inode.c
parent3c0eee3fe6a3a1c745379547c7e7c904aa64f6d5 (diff)
ceph: add dir_layout to inode
Add a ceph_dir_layout to the inode, and calculate dentry hash values based on the parent directory's specified dir_hash function. This is needed because the old default Linux dcache hash function is extremely week and leads to a poor distribution of files among dir fragments. Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/inode.c')
-rw-r--r--fs/ceph/inode.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index bf1286588f26..045283ce4413 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -297,6 +297,8 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
ci->i_release_count = 0;
ci->i_symlink = NULL;
+ memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout));
+
ci->i_fragtree = RB_ROOT;
mutex_init(&ci->i_fragtree_mutex);