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| author | Mikulas Patocka | 2011-07-25 23:57:03 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2011-08-23 02:43:53 +0200 |
| commit | a406f75840e15afbabd98cb64ae36b51424a8033 (patch) | |
| tree | 7fe7838b426052222ea3592384e51732efa00fee /fs/sysfs/sysfs.h | |
| parent | sysfs: remove s_sibling hacks (diff) | |
| download | kernel-qcow2-linux-a406f75840e15afbabd98cb64ae36b51424a8033.tar.gz kernel-qcow2-linux-a406f75840e15afbabd98cb64ae36b51424a8033.tar.xz kernel-qcow2-linux-a406f75840e15afbabd98cb64ae36b51424a8033.zip | |
sysfs: use rb-tree for inode number lookup
sysfs: use rb-tree for inode number lookup
This patch makes sysfs use red-black tree for inode number lookup.
Together with a previous patch to use red-black tree for name lookup,
this patch makes all sysfs lookups to have O(log n) complexity.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs/sysfs.h')
| -rw-r--r-- | fs/sysfs/sysfs.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index 3c261681713b..ce29e28b766d 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -18,11 +18,10 @@ struct sysfs_open_dirent; /* type-specific structures for sysfs_dirent->s_* union members */ struct sysfs_elem_dir { struct kobject *kobj; - /* children list starts here and goes through sd->s_sibling */ - struct sysfs_dirent *children; unsigned long subdirs; + struct rb_root inode_tree; struct rb_root name_tree; }; @@ -61,9 +60,9 @@ struct sysfs_dirent { struct lockdep_map dep_map; #endif struct sysfs_dirent *s_parent; - struct sysfs_dirent *s_sibling; const char *s_name; + struct rb_node inode_node; struct rb_node name_node; union { |