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authorJan Kara <jack@suse.cz>2017-03-14 14:29:35 +0100
committerJan Kara <jack@suse.cz>2017-04-10 17:37:35 +0200
commit86ffe245c430f07f95d5d28d3b694ea72f4492e7 (patch)
tree91f46db0135cc58cfb5dd1114962bc4781c456fe /include/linux/fsnotify_backend.h
parent9dd813c15b2c101168808d4f5941a29985758973 (diff)
downloadlwn-86ffe245c430f07f95d5d28d3b694ea72f4492e7.tar.gz
lwn-86ffe245c430f07f95d5d28d3b694ea72f4492e7.zip
fsnotify: Move object pointer to fsnotify_mark_connector
Move pointer to inode / vfsmount from mark itself to the fsnotify_mark_connector structure. This is another step on the path towards decoupling inode / vfsmount lifetime from notification mark lifetime. Reviewed-by: Miklos Szeredi <mszeredi@redhat.com> Reviewed-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.h17
1 files changed, 10 insertions, 7 deletions
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index 8b63085f8855..06f9a2cc1463 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -200,6 +200,13 @@ struct fsnotify_group {
* freed.
*/
struct fsnotify_mark_connector {
+#define FSNOTIFY_OBJ_TYPE_INODE 0x01
+#define FSNOTIFY_OBJ_TYPE_VFSMOUNT 0x02
+ unsigned int flags; /* Type of object [lock] */
+ union { /* Object pointer [lock] */
+ struct inode *inode;
+ struct vfsmount *mnt;
+ };
struct hlist_head list;
};
@@ -234,14 +241,10 @@ struct fsnotify_mark {
spinlock_t lock;
/* List of marks for inode / vfsmount [obj_lock] */
struct hlist_node obj_list;
- union { /* Object pointer [mark->lock, group->mark_mutex] */
- struct inode *inode; /* inode this mark is associated with */
- struct vfsmount *mnt; /* vfsmount this mark is associated with */
- };
+ /* Head of list of marks for an object [mark->lock, group->mark_mutex] */
+ struct fsnotify_mark_connector *connector;
/* Events types to ignore [mark->lock, group->mark_mutex] */
__u32 ignored_mask;
-#define FSNOTIFY_MARK_FLAG_INODE 0x01
-#define FSNOTIFY_MARK_FLAG_VFSMOUNT 0x02
#define FSNOTIFY_MARK_FLAG_OBJECT_PINNED 0x04
#define FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY 0x08
#define FSNOTIFY_MARK_FLAG_ALIVE 0x10
@@ -353,7 +356,7 @@ extern void fsnotify_free_mark(struct fsnotify_mark *mark);
extern void fsnotify_clear_vfsmount_marks_by_group(struct fsnotify_group *group);
/* run all the marks in a group, and clear all of the inode marks */
extern void fsnotify_clear_inode_marks_by_group(struct fsnotify_group *group);
-/* run all the marks in a group, and clear all of the marks where mark->flags & flags is true*/
+/* run all the marks in a group, and clear all of the marks attached to given object type */
extern void fsnotify_clear_marks_by_group_flags(struct fsnotify_group *group, unsigned int flags);
extern void fsnotify_connector_free(struct fsnotify_mark_connector **connp);
extern void fsnotify_get_mark(struct fsnotify_mark *mark);