diff options
| author | Imran Khan <imran.f.khan@oracle.com> | 2022-06-15 12:10:56 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-27 16:46:14 +0200 |
| commit | 086c00c71fc8d47db6983f419a45f9ee167de03f (patch) | |
| tree | ef0bf228f242f95a33a07088a2a811264cfa6c03 /include/linux/kernfs.h | |
| parent | dcab8da13ff4886aab26348b925d20dca4f12bac (diff) | |
kernfs: make ->attr.open RCU protected.
After removal of kernfs_open_node->refcnt in the previous patch,
kernfs_open_node_lock can be removed as well by making ->attr.open
RCU protected. kernfs_put_open_node can delegate freeing to ->attr.open
to RCU and other readers of ->attr.open can do so under rcu_read_(un)lock.
Suggested by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Imran Khan <imran.f.khan@oracle.com>
Link: https://lore.kernel.org/r/20220615021059.862643-2-imran.f.khan@oracle.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/kernfs.h')
| -rw-r--r-- | include/linux/kernfs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index e2ae15a6225e..13f54f078a52 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -114,7 +114,7 @@ struct kernfs_elem_symlink { struct kernfs_elem_attr { const struct kernfs_ops *ops; - struct kernfs_open_node *open; + struct kernfs_open_node __rcu *open; loff_t size; struct kernfs_node *notify_next; /* for kernfs_notify() */ }; |