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authorEric W. Biederman <ebiederm@xmission.com>2011-12-19 08:09:31 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-25 00:41:46 +0400
commit524b6c5b39b931311dfe5a2f5abae2f5c9731676 (patch)
tree0f81439d21bda26dbf94746a7e7da39ec7368fab /fs/sysfs/sysfs.h
parentcafa6b5dd7ce4f0e0a30be301be4efed587a7808 (diff)
downloadlinux-524b6c5b39b931311dfe5a2f5abae2f5c9731676.tar.xz
sysfs: Kill nlink counting.
Tracking the number of subdirectories requires an extra field that increases the size of sysfs_dirent. nlinks are not particularly interesting for sysfs and the nlink counts are wrong when network namespaces are involved so stop counting them, and always return nlink == 1. Userspace already knows that directories with nlink == 1 have an nlink count they can't use to count subdirectories. This reduces the size of sysfs_dirent by 8 bytes on 64bit platforms. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs/sysfs.h')
-rw-r--r--fs/sysfs/sysfs.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 661a9639570b..6289a00287db 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -19,7 +19,6 @@ struct sysfs_open_dirent;
struct sysfs_elem_dir {
struct kobject *kobj;
- unsigned long subdirs;
/* children rbtree starts here and goes through sd->s_rb */
struct rb_root children;
};