diff options
| author | Ian Kent <raven@themaw.net> | 2021-07-16 17:28:29 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-27 09:29:15 +0200 |
| commit | 7ba0273b2f34a55efe967d3c7381fb1da2ca195f (patch) | |
| tree | b8c0df46d2918cd7fc27c87fa1f9e058bbfd6aeb /include | |
| parent | c7e7c04274b13f98f758fb69b03f2ab61976ea80 (diff) | |
kernfs: switch kernfs to use an rwsem
The kernfs global lock restricts the ability to perform kernfs node
lookup operations in parallel during path walks.
Change the kernfs mutex to an rwsem so that, when opportunity arises,
node searches can be done in parallel with path walk lookups.
Reviewed-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Ian Kent <raven@themaw.net>
Link: https://lore.kernel.org/r/162642770946.63632.2218304587223241374.stgit@web.messagingengine.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -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 d68b4ad09573..1093abf7c28c 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -193,7 +193,7 @@ struct kernfs_root { u32 id_highbits; struct kernfs_syscall_ops *syscall_ops; - /* list of kernfs_super_info of this root, protected by kernfs_mutex */ + /* list of kernfs_super_info of this root, protected by kernfs_rwsem */ struct list_head supers; wait_queue_head_t deactivate_waitq; |