aboutsummaryrefslogtreecommitdiffstats
path: root/fs/notify/vfsmount_mark.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/notify/vfsmount_mark.c')
-rw-r--r--fs/notify/vfsmount_mark.c108
1 files changed, 0 insertions, 108 deletions
diff --git a/fs/notify/vfsmount_mark.c b/fs/notify/vfsmount_mark.c
deleted file mode 100644
index a8fcab68faef..000000000000
--- a/fs/notify/vfsmount_mark.c
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- * Copyright (C) 2008 Red Hat, Inc., Eric Paris <eparis@redhat.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mount.h>
-#include <linux/mutex.h>
-#include <linux/spinlock.h>
-
-#include <linux/atomic.h>
-
-#include <linux/fsnotify_backend.h>
-#include "fsnotify.h"
-
-void fsnotify_clear_vfsmount_marks_by_group(struct fsnotify_group *group)
-{
- fsnotify_clear_marks_by_group_flags(group, FSNOTIFY_MARK_FLAG_VFSMOUNT);
-}
-
-/*
- * Recalculate the mnt->mnt_fsnotify_mask, or the mask of all FS_* event types
- * any notifier is interested in hearing for this mount point
- */
-void fsnotify_recalc_vfsmount_mask(struct vfsmount *mnt)
-{
- struct mount *m = real_mount(mnt);
-
- spin_lock(&mnt->mnt_root->d_lock);
- m->mnt_fsnotify_mask = fsnotify_recalc_mask(&m->mnt_fsnotify_marks);
- spin_unlock(&mnt->mnt_root->d_lock);
-}
-
-void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark)
-{
- struct vfsmount *mnt = mark->mnt;
- struct mount *m = real_mount(mnt);
-
- BUG_ON(!mutex_is_locked(&mark->group->mark_mutex));
- assert_spin_locked(&mark->lock);
-
- spin_lock(&mnt->mnt_root->d_lock);
-
- hlist_del_init_rcu(&mark->obj_list);
- mark->mnt = NULL;
-
- m->mnt_fsnotify_mask = fsnotify_recalc_mask(&m->mnt_fsnotify_marks);
- spin_unlock(&mnt->mnt_root->d_lock);
-}
-
-/*
- * given a group and vfsmount, find the mark associated with that combination.
- * if found take a reference to that mark and return it, else return NULL
- */
-struct fsnotify_mark *fsnotify_find_vfsmount_mark(struct fsnotify_group *group,
- struct vfsmount *mnt)
-{
- struct mount *m = real_mount(mnt);
- struct fsnotify_mark *mark;
-
- spin_lock(&mnt->mnt_root->d_lock);
- mark = fsnotify_find_mark(&m->mnt_fsnotify_marks, group);
- spin_unlock(&mnt->mnt_root->d_lock);
-
- return mark;
-}
-
-/*
- * Attach an initialized mark to a given group and vfsmount.
- * These marks may be used for the fsnotify backend to determine which
- * event types should be delivered to which groups.
- */
-int fsnotify_add_vfsmount_mark(struct fsnotify_mark *mark,
- struct fsnotify_group *group, struct vfsmount *mnt,
- int allow_dups)
-{
- struct mount *m = real_mount(mnt);
- int ret;
-
- mark->flags |= FSNOTIFY_MARK_FLAG_VFSMOUNT;
-
- BUG_ON(!mutex_is_locked(&group->mark_mutex));
- assert_spin_locked(&mark->lock);
-
- spin_lock(&mnt->mnt_root->d_lock);
- mark->mnt = mnt;
- ret = fsnotify_add_mark_list(&m->mnt_fsnotify_marks, mark, allow_dups);
- m->mnt_fsnotify_mask = fsnotify_recalc_mask(&m->mnt_fsnotify_marks);
- spin_unlock(&mnt->mnt_root->d_lock);
-
- return ret;
-}