From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
The knfsd file cache will need to detect when files are unlinked, so that
it can close the associated cached files. Export a minimal set of notifier
functions to allow it to do so.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/notify/fsnotify.h | 2 --
fs/notify/group.c | 2 ++
fs/notify/mark.c | 6 ++++++
include/linux/fsnotify_backend.h | 2 ++
4 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/fs/notify/fsnotify.h b/fs/notify/fsnotify.h
index 5a00121fb219..f3462828a0e2 100644
--- a/fs/notify/fsnotify.h
+++ b/fs/notify/fsnotify.h
@@ -54,8 +54,6 @@ static inline void fsnotify_clear_marks_by_sb(struct super_block *sb)
{
fsnotify_destroy_marks(&sb->s_fsnotify_marks);
}
-/* Wait until all marks queued for destruction are destroyed */
-extern void fsnotify_wait_marks_destroyed(void);
/*
* update the dentry->d_flags of all of inode's children to indicate if inode cares
diff --git a/fs/notify/group.c b/fs/notify/group.c
index 0391190305cc..133f723aca07 100644
--- a/fs/notify/group.c
+++ b/fs/notify/group.c
@@ -108,6 +108,7 @@ void fsnotify_put_group(struct fsnotify_group *group)
if (refcount_dec_and_test(&group->refcnt))
fsnotify_final_destroy_group(group);
}
+EXPORT_SYMBOL_GPL(fsnotify_put_group);
/*
* Create a new fsnotify_group and hold a reference for the group returned.
@@ -137,6 +138,7 @@ struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops)
return group;
}
+EXPORT_SYMBOL_GPL(fsnotify_alloc_group);
int fsnotify_fasync(int fd, struct file *file, int on)
{
diff --git a/fs/notify/mark.c b/fs/notify/mark.c
index 99ddd126f6f0..1d96216dffd1 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -276,6 +276,7 @@ void fsnotify_put_mark(struct fsnotify_mark *mark)
queue_delayed_work(system_unbound_wq, &reaper_work,
FSNOTIFY_REAPER_DELAY);
}
+EXPORT_SYMBOL_GPL(fsnotify_put_mark);
/*
* Get mark reference when we found the mark via lockless traversal of object
@@ -430,6 +431,7 @@ void fsnotify_destroy_mark(struct fsnotify_mark *mark,
mutex_unlock(&group->mark_mutex);
fsnotify_free_mark(mark);
}
+EXPORT_SYMBOL_GPL(fsnotify_destroy_mark);
/*
* Sorting function for lists of fsnotify marks.
@@ -685,6 +687,7 @@ int fsnotify_add_mark(struct fsnotify_mark *mark, fsnotify_connp_t *connp,
mutex_unlock(&group->mark_mutex);
return ret;
}
+EXPORT_SYMBOL_GPL(fsnotify_add_mark);
/*
* Given a list of marks, find the mark associated with given group. If found
@@ -711,6 +714,7 @@ struct fsnotify_mark *fsnotify_find_mark(fsnotify_connp_t *connp,
spin_unlock(&conn->lock);
return NULL;
}
+EXPORT_SYMBOL_GPL(fsnotify_find_mark);
/* Clear any marks in a group with given type mask */
void fsnotify_clear_marks_by_group(struct fsnotify_group *group,
@@ -809,6 +813,7 @@ void fsnotify_init_mark(struct fsnotify_mark *mark,
mark->group = group;
WRITE_ONCE(mark->connector, NULL);
}
+EXPORT_SYMBOL_GPL(fsnotify_init_mark);
/*
* Destroy all marks in destroy_list, waits for SRCU period to finish before
@@ -837,3 +842,4 @@ void fsnotify_wait_marks_destroyed(void)
{
flush_delayed_work(&reaper_work);
}
+EXPORT_SYMBOL_GPL(fsnotify_wait_marks_destroyed);
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index 2de3b2ddd19a..1915bdba2fad 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -475,6 +475,8 @@ extern void fsnotify_destroy_mark(struct fsnotify_mark *mark,
extern void fsnotify_detach_mark(struct fsnotify_mark *mark);
/* free mark */
extern void fsnotify_free_mark(struct fsnotify_mark *mark);
+/* Wait until all marks queued for destruction are destroyed */
+extern void fsnotify_wait_marks_destroyed(void);
/* 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(struct fsnotify_group *group, unsigned int type);
/* run all the marks in a group, and clear all of the vfsmount marks */
--
2.21.0
