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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-09 01:03:10 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-09 01:03:10 +0400 |
| commit | 54d20f006ceff1f2f1e69d0e54049b6c0765c039 (patch) | |
| tree | e2418ba2f9ee4830d4fc3e16599189b8e1256899 | |
| parent | 7b60a18da393ed70db043a777fd9e6d5363077c4 (diff) | |
| download | linux-54d20f006ceff1f2f1e69d0e54049b6c0765c039.tar.xz | |
Revert "sysfs: Kill nlink counting."
This reverts commit 524b6c5b39b931311dfe5a2f5abae2f5c9731676.
It has shown to break userspace tools, which is not acceptable.
Reported-by: Jiri Slaby <jslaby@suse.cz>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/sysfs/dir.c | 6 | ||||
| -rw-r--r-- | fs/sysfs/inode.c | 3 | ||||
| -rw-r--r-- | fs/sysfs/sysfs.h | 1 |
3 files changed, 10 insertions, 0 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index dd3779cf3a3b..2a7a3f5d1ca6 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -91,6 +91,9 @@ static int sysfs_link_sibling(struct sysfs_dirent *sd) struct rb_node **node = &sd->s_parent->s_dir.children.rb_node; struct rb_node *parent = NULL; + if (sysfs_type(sd) == SYSFS_DIR) + sd->s_parent->s_dir.subdirs++; + while (*node) { struct sysfs_dirent *pos; int result; @@ -123,6 +126,9 @@ static int sysfs_link_sibling(struct sysfs_dirent *sd) */ static void sysfs_unlink_sibling(struct sysfs_dirent *sd) { + if (sysfs_type(sd) == SYSFS_DIR) + sd->s_parent->s_dir.subdirs--; + rb_erase(&sd->s_rb, &sd->s_parent->s_dir.children); } diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c index cc7ea5de2fdd..feb2d69396cf 100644 --- a/fs/sysfs/inode.c +++ b/fs/sysfs/inode.c @@ -217,6 +217,9 @@ static void sysfs_refresh_inode(struct sysfs_dirent *sd, struct inode *inode) iattrs->ia_secdata, iattrs->ia_secdata_len); } + + if (sysfs_type(sd) == SYSFS_DIR) + set_nlink(inode, sd->s_dir.subdirs + 2); } int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index 6289a00287db..661a9639570b 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -19,6 +19,7 @@ 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; }; |