diff options
| author | Tejun Heo <tj@kernel.org> | 2014-04-09 11:07:30 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-17 16:23:19 -0700 |
| commit | 0b2332fbef1df5db5ed85fb1812aca9d50aa6415 (patch) | |
| tree | 4c2e7efc58e87c0a4c0a9cff698ea8e07d089966 /include | |
| parent | f1a6b5ddc318c0722e70715ef3a53e53981d606c (diff) | |
kernfs: implement kernfs_root->supers list
commit 7d568a8383bbb9c1f5167781075906acb2bb1550 upstream.
Currently, there's no way to find out which super_blocks are
associated with a given kernfs_root. Let's implement it - the planned
inotify extension to kernfs_notify() needs it.
Make kernfs_super_info point back to the super_block and chain it at
kernfs_root->supers.
Signed-off-by: Tejun Heo <tj@kernel.org>
[lizf: Backported to 3.15: Adjust context]
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kernfs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index 52bf5677db0b..17aa1cce6f8e 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -161,6 +161,10 @@ struct kernfs_root { /* private fields, do not use outside kernfs proper */ struct ida ino_ida; struct kernfs_syscall_ops *syscall_ops; + + /* list of kernfs_super_info of this root, protected by kernfs_mutex */ + struct list_head supers; + wait_queue_head_t deactivate_waitq; }; |