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| author |   Eric W. Biederman <ebiederm@xmission.com> | 2011-12-18 20:09:31 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-24 12:41:46 -0800 |
| commit | 524b6c5b39b931311dfe5a2f5abae2f5c9731676 (patch) | |
| tree | 0f81439d21bda26dbf94746a7e7da39ec7368fab /fs/sysfs/sysfs.h | |
| parent | sysfs: Store the sysfs inode in an unsigned int. (diff) | |
| download | linux-dev-524b6c5b39b931311dfe5a2f5abae2f5c9731676.tar.xz linux-dev-524b6c5b39b931311dfe5a2f5abae2f5c9731676.zip | |
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 '')
| -rw-r--r-- | fs/sysfs/sysfs.h | 1 |
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; }; |