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authorTejun Heo <htejun@gmail.com>2007-06-14 03:45:18 +0900
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-11 16:09:07 -0700
commit0c73f18b7d95de8a007039337063a770b5fc8e7a (patch)
treecf3b6f274139b170136219918dd679f2397e69f6 /fs/sysfs/mount.c
parent8619f979898397582e366877fd5feeba7560d70c (diff)
downloadvexpress-lsk-0c73f18b7d95de8a007039337063a770b5fc8e7a.tar.gz
sysfs: use singly-linked list for sysfs_dirent tree
Make sysfs_dirent use singly linked list for its tree structure. sysfs_link_sibling() and sysfs_unlink_sibling() functions are added to handle simpler cases. It adds some complexity and cpu cycle overhead but reduced memory footprint is worthwhile on big machines. This change reduces the sizeof sysfs_dirent from 104 to 88 on 64bit and from 60 to 52 on 32bit. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs/mount.c')
-rw-r--r--fs/sysfs/mount.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index d0e160307c5..4be9593ea00 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -26,11 +26,8 @@ static const struct super_operations sysfs_ops = {
static struct sysfs_dirent sysfs_root = {
.s_count = ATOMIC_INIT(1),
- .s_sibling = LIST_HEAD_INIT(sysfs_root.s_sibling),
- .s_children = LIST_HEAD_INIT(sysfs_root.s_children),
.s_type = SYSFS_ROOT,
.s_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
- .s_iattr = NULL,
.s_ino = 1,
};