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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/cifs_fs_sb.h
parent413e661c136c52290de1ee19a1b049a4da9dbf51 (diff)
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/cifs_fs_sb.h')
-rw-r--r--fs/cifs/cifs_fs_sb.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index 79576dac336..e9a393c9c2c 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -15,7 +15,7 @@
* the GNU Lesser General Public License for more details.
*
*/
-#include <linux/radix-tree.h>
+#include <linux/rbtree.h>
#ifndef _CIFS_FS_SB_H
#define _CIFS_FS_SB_H
@@ -42,7 +42,7 @@
#define CIFS_MOUNT_MULTIUSER 0x20000 /* multiuser mount */
struct cifs_sb_info {
- struct radix_tree_root tlink_tree;
+ struct rb_root tlink_tree;
spinlock_t tlink_tree_lock;
struct tcon_link *master_tlink;
struct nls_table *local_nls;