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authorJeff Layton <jlayton@redhat.com>2010-10-28 11:16:44 -0400
committerSteve French <sfrench@us.ibm.com>2010-11-02 19:20:23 +0000
commitb647c35f77af9c07d336247b23014596e9f0a593 (patch)
tree653949250681fd1c23ad529b631da793f95778a6 /fs/cifs/cifsfs.c
parent413e661c136c52290de1ee19a1b049a4da9dbf51 (diff)
downloadop-kernel-dev-b647c35f77af9c07d336247b23014596e9f0a593.zip
op-kernel-dev-b647c35f77af9c07d336247b23014596e9f0a593.tar.gz
cifs: convert tlink_tree to a rbtree
Radix trees are ideal when you want to track a bunch of pointers and can't embed a tracking structure within the target of those pointers. The tradeoff is an increase in memory, particularly if the tree is sparse. In CIFS, we use the tlink_tree to track tcon_link structs. A tcon_link can never be in more than one tlink_tree, so there's no impediment to using a rb_tree here instead of a radix tree. Convert the new multiuser mount code to use a rb_tree instead. This should reduce the memory required to manage the tlink_tree. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifsfs.c')
-rw-r--r--fs/cifs/cifsfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 75c4eaa..38526a6 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -116,7 +116,7 @@ cifs_read_super(struct super_block *sb, void *data,
return -ENOMEM;
spin_lock_init(&cifs_sb->tlink_tree_lock);
- INIT_RADIX_TREE(&cifs_sb->tlink_tree, GFP_KERNEL);
+ cifs_sb->tlink_tree = RB_ROOT;
rc = bdi_setup_and_register(&cifs_sb->bdi, "cifs", BDI_CAP_MAP_COPY);
if (rc) {
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