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fsnotify: create helpers to get sb and connp from object

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In preparation to passing an object pointer to add/remove/find mark
helpers, create helpers to get sb and connp by object type.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20240317184154.1200192-3-amir73il@gmail.com>
This commit is contained in:
Amir Goldstein 2024-03-17 20:41:46 +02:00 committed by Jan Kara
parent d2f277e26f
commit f115815d75
2 changed files with 30 additions and 0 deletions
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15
fs/notify/fsnotify.h
View File

@ -27,6 +27,21 @@ static inline struct super_block *fsnotify_conn_sb(
return container_of(conn->obj, struct super_block, s_fsnotify_marks); return container_of(conn->obj, struct super_block, s_fsnotify_marks);
} }
static inline struct super_block *fsnotify_object_sb(void *obj,
enum fsnotify_obj_type obj_type)
{
switch (obj_type) {
case FSNOTIFY_OBJ_TYPE_INODE:
return ((struct inode *)obj)->i_sb;
case FSNOTIFY_OBJ_TYPE_VFSMOUNT:
return ((struct vfsmount *)obj)->mnt_sb;
case FSNOTIFY_OBJ_TYPE_SB:
return (struct super_block *)obj;
default:
return NULL;
}
}
static inline struct super_block *fsnotify_connector_sb( static inline struct super_block *fsnotify_connector_sb(
struct fsnotify_mark_connector *conn) struct fsnotify_mark_connector *conn)
{ {

15
fs/notify/mark.c
View File

@ -97,6 +97,21 @@ void fsnotify_get_mark(struct fsnotify_mark *mark)
refcount_inc(&mark->refcnt); refcount_inc(&mark->refcnt);
} }
static fsnotify_connp_t *fsnotify_object_connp(void *obj,
enum fsnotify_obj_type obj_type)
{
switch (obj_type) {
case FSNOTIFY_OBJ_TYPE_INODE:
return &((struct inode *)obj)->i_fsnotify_marks;
case FSNOTIFY_OBJ_TYPE_VFSMOUNT:
return &real_mount(obj)->mnt_fsnotify_marks;
case FSNOTIFY_OBJ_TYPE_SB:
return &((struct super_block *)obj)->s_fsnotify_marks;
default:
return NULL;
}
}
static __u32 *fsnotify_conn_mask_p(struct fsnotify_mark_connector *conn) static __u32 *fsnotify_conn_mask_p(struct fsnotify_mark_connector *conn)
{ {
if (conn->type == FSNOTIFY_OBJ_TYPE_INODE) if (conn->type == FSNOTIFY_OBJ_TYPE_INODE)