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| author | Tejun Heo <htejun@gmail.com> | 2007-06-13 20:45:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-12 01:09:07 +0200 |
| commit | 0c73f18b7d95de8a007039337063a770b5fc8e7a (patch) | |
| tree | cf3b6f274139b170136219918dd679f2397e69f6 /fs/sysfs/mount.c | |
| parent | sysfs: slim down sysfs_dirent->s_active (diff) | |
| download | linux-0c73f18b7d95de8a007039337063a770b5fc8e7a.tar.xz linux-0c73f18b7d95de8a007039337063a770b5fc8e7a.zip | |
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.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c index d0e160307c5d..4be9593ea000 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, }; |