1 files changed, 0 insertions, 288 deletions
diff --git a/fs/aufs/hfsnotify.c b/fs/aufs/hfsnotify.c
deleted file mode 100644
index dc4f6c3c9..000000000
--- a/fs/aufs/hfsnotify.c
+++ /dev/null
@@ -1,288 +0,0 @@
-/*
- * Copyright (C) 2005-2015 Junjiro R. Okajima
- *
- * This program, aufs 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 of the License, 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.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-/*
- * fsnotify for the lower directories
- */
-
-#include "aufs.h"
-
-/* FS_IN_IGNORED is unnecessary */
-static const __u32 AuHfsnMask = (FS_MOVED_TO | FS_MOVED_FROM | FS_DELETE
-				 | FS_CREATE | FS_EVENT_ON_CHILD);
-static DECLARE_WAIT_QUEUE_HEAD(au_hfsn_wq);
-static __cacheline_aligned_in_smp atomic64_t au_hfsn_ifree = ATOMIC64_INIT(0);
-
-static void au_hfsn_free_mark(struct fsnotify_mark *mark)
-{
-	struct au_hnotify *hn = container_of(mark, struct au_hnotify,
-					     hn_mark);
-	AuDbg("here\n");
-	au_cache_free_hnotify(hn);
-	smp_mb__before_atomic();
-	if (atomic64_dec_and_test(&au_hfsn_ifree))
-		wake_up(&au_hfsn_wq);
-}
-
-static int au_hfsn_alloc(struct au_hinode *hinode)
-{
-	int err;
-	struct au_hnotify *hn;
-	struct super_block *sb;
-	struct au_branch *br;
-	struct fsnotify_mark *mark;
-	aufs_bindex_t bindex;
-
-	hn = hinode->hi_notify;
-	sb = hn->hn_aufs_inode->i_sb;
-	bindex = au_br_index(sb, hinode->hi_id);
-	br = au_sbr(sb, bindex);
-	AuDebugOn(!br->br_hfsn);
-
-	mark = &hn->hn_mark;
-	fsnotify_init_mark(mark, au_hfsn_free_mark);
-	mark->mask = AuHfsnMask;
-	/*
-	 * by udba rename or rmdir, aufs assign a new inode to the known
-	 * h_inode, so specify 1 to allow dups.
-	 */
-	lockdep_off();
-	err = fsnotify_add_mark(mark, br->br_hfsn->hfsn_group, hinode->hi_inode,
-				 /*mnt*/NULL, /*allow_dups*/1);
-	/* even if err */
-	fsnotify_put_mark(mark);
-	lockdep_on();
-
-	return err;
-}
-
-static int au_hfsn_free(struct au_hinode *hinode, struct au_hnotify *hn)
-{
-	struct fsnotify_mark *mark;
-	unsigned long long ull;
-	struct fsnotify_group *group;
-
-	ull = atomic64_inc_return(&au_hfsn_ifree);
-	BUG_ON(!ull);
-
-	mark = &hn->hn_mark;
-	spin_lock(&mark->lock);
-	group = mark->group;
-	fsnotify_get_group(group);
-	spin_unlock(&mark->lock);
-	lockdep_off();
-	fsnotify_destroy_mark(mark, group);
-	fsnotify_put_group(group);
-	lockdep_on();
-
-	/* free hn by myself */
-	return 0;
-}
-
-/* ---------------------------------------------------------------------- */
-
-static void au_hfsn_ctl(struct au_hinode *hinode, int do_set)
-{
-	struct fsnotify_mark *mark;
-
-	mark = &hinode->hi_notify->hn_mark;
-	spin_lock(&mark->lock);
-	if (do_set) {
-		AuDebugOn(mark->mask & AuHfsnMask);
-		mark->mask |= AuHfsnMask;
-	} else {
-		AuDebugOn(!(mark->mask & AuHfsnMask));
-		mark->mask &= ~AuHfsnMask;
-	}
-	spin_unlock(&mark->lock);
-	/* fsnotify_recalc_inode_mask(hinode->hi_inode); */
-}
-
-/* ---------------------------------------------------------------------- */
-
-/* #define AuDbgHnotify */
-#ifdef AuDbgHnotify
-static char *au_hfsn_name(u32 mask)
-{
-#ifdef CONFIG_AUFS_DEBUG
-#define test_ret(flag)				\
-	do {					\
-		if (mask & flag)		\
-			return #flag;		\
-	} while (0)
-	test_ret(FS_ACCESS);
-	test_ret(FS_MODIFY);
-	test_ret(FS_ATTRIB);
-	test_ret(FS_CLOSE_WRITE);
-	test_ret(FS_CLOSE_NOWRITE);
-	test_ret(FS_OPEN);
-	test_ret(FS_MOVED_FROM);
-	test_ret(FS_MOVED_TO);
-	test_ret(FS_CREATE);
-	test_ret(FS_DELETE);
-	test_ret(FS_DELETE_SELF);
-	test_ret(FS_MOVE_SELF);
-	test_ret(FS_UNMOUNT);
-	test_ret(FS_Q_OVERFLOW);
-	test_ret(FS_IN_IGNORED);
-	test_ret(FS_ISDIR);
-	test_ret(FS_IN_ONESHOT);
-	test_ret(FS_EVENT_ON_CHILD);
-	return "";
-#undef test_ret
-#else
-	return "??";
-#endif
-}
-#endif
-
-/* ---------------------------------------------------------------------- */
-
-static void au_hfsn_free_group(struct fsnotify_group *group)
-{
-	struct au_br_hfsnotify *hfsn = group->private;
-
-	AuDbg("here\n");
-	kfree(hfsn);
-}
-
-static int au_hfsn_handle_event(struct fsnotify_group *group,
-				struct inode *inode,
-				struct fsnotify_mark *inode_mark,
-				struct fsnotify_mark *vfsmount_mark,
-				u32 mask, void *data, int data_type,
-				const unsigned char *file_name, u32 cookie)
-{
-	int err;
-	struct au_hnotify *hnotify;
-	struct inode *h_dir, *h_inode;
-	struct qstr h_child_qstr = QSTR_INIT(file_name, strlen(file_name));
-
-	AuDebugOn(data_type != FSNOTIFY_EVENT_INODE);
-
-	err = 0;
-	/* if FS_UNMOUNT happens, there must be another bug */
-	AuDebugOn(mask & FS_UNMOUNT);
-	if (mask & (FS_IN_IGNORED | FS_UNMOUNT))
-		goto out;
-
-	h_dir = inode;
-	h_inode = NULL;
-#ifdef AuDbgHnotify
-	au_debug_on();
-	if (1 || h_child_qstr.len != sizeof(AUFS_XINO_FNAME) - 1
-	    || strncmp(h_child_qstr.name, AUFS_XINO_FNAME, h_child_qstr.len)) {
-		AuDbg("i%lu, mask 0x%x %s, hcname %.*s, hi%lu\n",
-		      h_dir->i_ino, mask, au_hfsn_name(mask),
-		      AuLNPair(&h_child_qstr), h_inode ? h_inode->i_ino : 0);
-		/* WARN_ON(1); */
-	}
-	au_debug_off();
-#endif
-
-	AuDebugOn(!inode_mark);
-	hnotify = container_of(inode_mark, struct au_hnotify, hn_mark);
-	err = au_hnotify(h_dir, hnotify, mask, &h_child_qstr, h_inode);
-
-out:
-	return err;
-}
-
-static struct fsnotify_ops au_hfsn_ops = {
-	.handle_event		= au_hfsn_handle_event,
-	.free_group_priv	= au_hfsn_free_group
-};
-
-/* ---------------------------------------------------------------------- */
-
-static void au_hfsn_fin_br(struct au_branch *br)
-{
-	struct au_br_hfsnotify *hfsn;
-
-	hfsn = br->br_hfsn;
-	if (hfsn) {
-		lockdep_off();
-		fsnotify_put_group(hfsn->hfsn_group);
-		lockdep_on();
-	}
-}
-
-static int au_hfsn_init_br(struct au_branch *br, int perm)
-{
-	int err;
-	struct fsnotify_group *group;
-	struct au_br_hfsnotify *hfsn;
-
-	err = 0;
-	br->br_hfsn = NULL;
-	if (!au_br_hnotifyable(perm))
-		goto out;
-
-	err = -ENOMEM;
-	hfsn = kmalloc(sizeof(*hfsn), GFP_NOFS);
-	if (unlikely(!hfsn))
-		goto out;
-
-	err = 0;
-	group = fsnotify_alloc_group(&au_hfsn_ops);
-	if (IS_ERR(group)) {
-		err = PTR_ERR(group);
-		pr_err("fsnotify_alloc_group() failed, %d\n", err);
-		goto out_hfsn;
-	}
-
-	group->private = hfsn;
-	hfsn->hfsn_group = group;
-	br->br_hfsn = hfsn;
-	goto out; /* success */
-
-out_hfsn:
-	kfree(hfsn);
-out:
-	return err;
-}
-
-static int au_hfsn_reset_br(unsigned int udba, struct au_branch *br, int perm)
-{
-	int err;
-
-	err = 0;
-	if (!br->br_hfsn)
-		err = au_hfsn_init_br(br, perm);
-
-	return err;
-}
-
-/* ---------------------------------------------------------------------- */
-
-static void au_hfsn_fin(void)
-{
-	AuDbg("au_hfsn_ifree %lld\n", (long long)atomic64_read(&au_hfsn_ifree));
-	wait_event(au_hfsn_wq, !atomic64_read(&au_hfsn_ifree));
-}
-
-const struct au_hnotify_op au_hnotify_op = {
-	.ctl		= au_hfsn_ctl,
-	.alloc		= au_hfsn_alloc,
-	.free		= au_hfsn_free,
-
-	.fin		= au_hfsn_fin,
-
-	.reset_br	= au_hfsn_reset_br,
-	.fin_br		= au_hfsn_fin_br,
-	.init_br	= au_hfsn_init_br
-};