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authorTejun Heo <tj@kernel.org>2014-04-09 11:07:30 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-04-25 11:43:31 -0700
commit7d568a8383bbb9c1f5167781075906acb2bb1550 (patch)
treef25a2d70ce8851e991a53ed6391c899320f097a6 /include/linux/kernfs.h
parenta798c10faf62a505d24e5f6213fbaf904a39623f (diff)
kernfs: implement kernfs_root->supers list
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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/kernfs.h')
-rw-r--r--include/linux/kernfs.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
index b0122dc6f96a..589318b73e61 100644
--- a/include/linux/kernfs.h
+++ b/include/linux/kernfs.h
@@ -144,6 +144,10 @@ 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;
};