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-rw-r--r--fs/notify/inode_mark.c199
1 files changed, 0 insertions, 199 deletions
diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c
deleted file mode 100644
index a3645249f7ec..000000000000
--- a/fs/notify/inode_mark.c
+++ /dev/null
@@ -1,199 +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/mutex.h>
-#include <linux/spinlock.h>
-
-#include <linux/atomic.h>
-
-#include <linux/fsnotify_backend.h>
-#include "fsnotify.h"
-
-#include "../internal.h"
-
-/*
- * Recalculate the inode->i_fsnotify_mask, or the mask of all FS_* event types
- * any notifier is interested in hearing for this inode.
- */
-void fsnotify_recalc_inode_mask(struct inode *inode)
-{
- spin_lock(&inode->i_lock);
- inode->i_fsnotify_mask = fsnotify_recalc_mask(&inode->i_fsnotify_marks);
- spin_unlock(&inode->i_lock);
-
- __fsnotify_update_child_dentry_flags(inode);
-}
-
-void fsnotify_destroy_inode_mark(struct fsnotify_mark *mark)
-{
- struct inode *inode = mark->inode;
-
- BUG_ON(!mutex_is_locked(&mark->group->mark_mutex));
- assert_spin_locked(&mark->lock);
-
- spin_lock(&inode->i_lock);
-
- hlist_del_init_rcu(&mark->obj_list);
- mark->inode = NULL;
-
- /*
- * this mark is now off the inode->i_fsnotify_marks list and we
- * hold the inode->i_lock, so this is the perfect time to update the
- * inode->i_fsnotify_mask
- */
- inode->i_fsnotify_mask = fsnotify_recalc_mask(&inode->i_fsnotify_marks);
- spin_unlock(&inode->i_lock);
-}
-
-/*
- * Given a group clear all of the inode marks associated with that group.
- */
-void fsnotify_clear_inode_marks_by_group(struct fsnotify_group *group)
-{
- fsnotify_clear_marks_by_group_flags(group, FSNOTIFY_MARK_FLAG_INODE);
-}
-
-/*
- * given a group and inode, 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_inode_mark(struct fsnotify_group *group,
- struct inode *inode)
-{
- struct fsnotify_mark *mark;
-
- spin_lock(&inode->i_lock);
- mark = fsnotify_find_mark(&inode->i_fsnotify_marks, group);
- spin_unlock(&inode->i_lock);
-
- return mark;
-}
-
-/*
- * If we are setting a mark mask on an inode mark we should pin the inode
- * in memory.
- */
-void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *mark,
- __u32 mask)
-{
- struct inode *inode;
-
- assert_spin_locked(&mark->lock);
-
- if (mask &&
- mark->inode &&
- !(mark->flags & FSNOTIFY_MARK_FLAG_OBJECT_PINNED)) {
- mark->flags |= FSNOTIFY_MARK_FLAG_OBJECT_PINNED;
- inode = igrab(mark->inode);
- /*
- * we shouldn't be able to get here if the inode wasn't
- * already safely held in memory. But bug in case it
- * ever is wrong.
- */
- BUG_ON(!inode);
- }
-}
-
-/*
- * Attach an initialized mark to a given inode.
- * These marks may be used for the fsnotify backend to determine which
- * event types should be delivered to which group and for which inodes. These
- * marks are ordered according to priority, highest number first, and then by
- * the group's location in memory.
- */
-int fsnotify_add_inode_mark(struct fsnotify_mark *mark,
- struct fsnotify_group *group, struct inode *inode,
- int allow_dups)
-{
- int ret;
-
- mark->flags |= FSNOTIFY_MARK_FLAG_INODE;
-
- BUG_ON(!mutex_is_locked(&group->mark_mutex));
- assert_spin_locked(&mark->lock);
-
- spin_lock(&inode->i_lock);
- mark->inode = inode;
- ret = fsnotify_add_mark_list(&inode->i_fsnotify_marks, mark,
- allow_dups);
- inode->i_fsnotify_mask = fsnotify_recalc_mask(&inode->i_fsnotify_marks);
- spin_unlock(&inode->i_lock);
-
- return ret;
-}
-
-/**
- * fsnotify_unmount_inodes - an sb is unmounting. handle any watched inodes.
- * @sb: superblock being unmounted.
- *
- * Called during unmount with no locks held, so needs to be safe against
- * concurrent modifiers. We temporarily drop sb->s_inode_list_lock and CAN block.
- */
-void fsnotify_unmount_inodes(struct super_block *sb)
-{
- struct inode *inode, *iput_inode = NULL;
-
- spin_lock(&sb->s_inode_list_lock);
- list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
- /*
- * We cannot __iget() an inode in state I_FREEING,
- * I_WILL_FREE, or I_NEW which is fine because by that point
- * the inode cannot have any associated watches.
- */
- spin_lock(&inode->i_lock);
- if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) {
- spin_unlock(&inode->i_lock);
- continue;
- }
-
- /*
- * If i_count is zero, the inode cannot have any watches and
- * doing an __iget/iput with MS_ACTIVE clear would actually
- * evict all inodes with zero i_count from icache which is
- * unnecessarily violent and may in fact be illegal to do.
- */
- if (!atomic_read(&inode->i_count)) {
- spin_unlock(&inode->i_lock);
- continue;
- }
-
- __iget(inode);
- spin_unlock(&inode->i_lock);
- spin_unlock(&sb->s_inode_list_lock);
-
- if (iput_inode)
- iput(iput_inode);
-
- /* for each watch, send FS_UNMOUNT and then remove it */
- fsnotify(inode, FS_UNMOUNT, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
-
- fsnotify_inode_delete(inode);
-
- iput_inode = inode;
-
- spin_lock(&sb->s_inode_list_lock);
- }
- spin_unlock(&sb->s_inode_list_lock);
-
- if (iput_inode)
- iput(iput_inode);
-}