diff options
| author | Amir Goldstein <amir73il@gmail.com> | 2018-06-23 17:54:49 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2018-06-27 13:45:05 +0200 |
| commit | 36f10f55ff1d2867bfc48ed898a9cc0dc6b49dd2 (patch) | |
| tree | 0b7a840c5c8e0b2bd44aeca2c21a144b25d89457 /include/linux/fsnotify_backend.h | |
| parent | b812a9f5896379b6cff2ac168ddb5b89037d8e78 (diff) | |
fsnotify: let connector point to an abstract object
Make the code to attach/detach a connector to object more generic
by letting the fsnotify connector point to an abstract fsnotify_connp_t.
Code that needs to dereference an inode or mount object now uses the
helpers fsnotify_conn_{inode,mount}.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'include/linux/fsnotify_backend.h')
| -rw-r--r-- | include/linux/fsnotify_backend.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 8efb8663453d..381cfb0e67fa 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -256,6 +256,13 @@ FSNOTIFY_ITER_FUNCS(vfsmount, VFSMOUNT) for (type = 0; type < FSNOTIFY_OBJ_TYPE_COUNT; type++) /* + * fsnotify_connp_t is what we embed in objects which connector can be attached + * to. fsnotify_connp_t * is how we refer from connector back to object. + */ +struct fsnotify_mark_connector; +typedef struct fsnotify_mark_connector __rcu *fsnotify_connp_t; + +/* * Inode / vfsmount point to this structure which tracks all marks attached to * the inode / vfsmount. The reference to inode / vfsmount is held by this * structure. We destroy this structure when there are no more marks attached @@ -264,17 +271,15 @@ FSNOTIFY_ITER_FUNCS(vfsmount, VFSMOUNT) struct fsnotify_mark_connector { spinlock_t lock; unsigned int type; /* Type of object [lock] */ - union { /* Object pointer [lock] */ - struct inode *inode; - struct vfsmount *mnt; + union { + /* Object pointer [lock] */ + fsnotify_connp_t *obj; /* Used listing heads to free after srcu period expires */ struct fsnotify_mark_connector *destroy_next; }; struct hlist_head list; }; -typedef struct fsnotify_mark_connector __rcu *fsnotify_connp_t; - /* * A mark is simply an object attached to an in core inode which allows an * fsnotify listener to indicate they are either no longer interested in events |