Linux-libre 4.2-gnu

1 files changed, 0 insertions, 224 deletions

diff --git a/fs/aufs/dcsub.c b/fs/aufs/dcsub.c
deleted file mode 100644
index 910a2e870..000000000
--- a/fs/aufs/dcsub.c
+++ /dev/null
@@ -1,224 +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/>.
- */
-
-/*
- * sub-routines for dentry cache
- */
-
-#include "aufs.h"
-
-static void au_dpage_free(struct au_dpage *dpage)
-{
-	int i;
-	struct dentry **p;
-
-	p = dpage->dentries;
-	for (i = 0; i < dpage->ndentry; i++)
-		dput(*p++);
-	free_page((unsigned long)dpage->dentries);
-}
-
-int au_dpages_init(struct au_dcsub_pages *dpages, gfp_t gfp)
-{
-	int err;
-	void *p;
-
-	err = -ENOMEM;
-	dpages->dpages = kmalloc(sizeof(*dpages->dpages), gfp);
-	if (unlikely(!dpages->dpages))
-		goto out;
-
-	p = (void *)__get_free_page(gfp);
-	if (unlikely(!p))
-		goto out_dpages;
-
-	dpages->dpages[0].ndentry = 0;
-	dpages->dpages[0].dentries = p;
-	dpages->ndpage = 1;
-	return 0; /* success */
-
-out_dpages:
-	kfree(dpages->dpages);
-out:
-	return err;
-}
-
-void au_dpages_free(struct au_dcsub_pages *dpages)
-{
-	int i;
-	struct au_dpage *p;
-
-	p = dpages->dpages;
-	for (i = 0; i < dpages->ndpage; i++)
-		au_dpage_free(p++);
-	kfree(dpages->dpages);
-}
-
-static int au_dpages_append(struct au_dcsub_pages *dpages,
-			    struct dentry *dentry, gfp_t gfp)
-{
-	int err, sz;
-	struct au_dpage *dpage;
-	void *p;
-
-	dpage = dpages->dpages + dpages->ndpage - 1;
-	sz = PAGE_SIZE / sizeof(dentry);
-	if (unlikely(dpage->ndentry >= sz)) {
-		AuLabel(new dpage);
-		err = -ENOMEM;
-		sz = dpages->ndpage * sizeof(*dpages->dpages);
-		p = au_kzrealloc(dpages->dpages, sz,
-				 sz + sizeof(*dpages->dpages), gfp);
-		if (unlikely(!p))
-			goto out;
-
-		dpages->dpages = p;
-		dpage = dpages->dpages + dpages->ndpage;
-		p = (void *)__get_free_page(gfp);
-		if (unlikely(!p))
-			goto out;
-
-		dpage->ndentry = 0;
-		dpage->dentries = p;
-		dpages->ndpage++;
-	}
-
-	AuDebugOn(au_dcount(dentry) <= 0);
-	dpage->dentries[dpage->ndentry++] = dget_dlock(dentry);
-	return 0; /* success */
-
-out:
-	return err;
-}
-
-/* todo: BAD approach */
-/* copied from linux/fs/dcache.c */
-enum d_walk_ret {
-	D_WALK_CONTINUE,
-	D_WALK_QUIT,
-	D_WALK_NORETRY,
-	D_WALK_SKIP,
-};
-
-extern void d_walk(struct dentry *parent, void *data,
-		   enum d_walk_ret (*enter)(void *, struct dentry *),
-		   void (*finish)(void *));
-
-struct ac_dpages_arg {
-	int err;
-	struct au_dcsub_pages *dpages;
-	struct super_block *sb;
-	au_dpages_test test;
-	void *arg;
-};
-
-static enum d_walk_ret au_call_dpages_append(void *_arg, struct dentry *dentry)
-{
-	enum d_walk_ret ret;
-	struct ac_dpages_arg *arg = _arg;
-
-	ret = D_WALK_CONTINUE;
-	if (dentry->d_sb == arg->sb
-	    && !IS_ROOT(dentry)
-	    && au_dcount(dentry) > 0
-	    && au_di(dentry)
-	    && (!arg->test || arg->test(dentry, arg->arg))) {
-		arg->err = au_dpages_append(arg->dpages, dentry, GFP_ATOMIC);
-		if (unlikely(arg->err))
-			ret = D_WALK_QUIT;
-	}
-
-	return ret;
-}
-
-int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root,
-		   au_dpages_test test, void *arg)
-{
-	struct ac_dpages_arg args = {
-		.err	= 0,
-		.dpages	= dpages,
-		.sb	= root->d_sb,
-		.test	= test,
-		.arg	= arg
-	};
-
-	d_walk(root, &args, au_call_dpages_append, NULL);
-
-	return args.err;
-}
-
-int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry,
-		       int do_include, au_dpages_test test, void *arg)
-{
-	int err;
-
-	err = 0;
-	write_seqlock(&rename_lock);
-	spin_lock(&dentry->d_lock);
-	if (do_include
-	    && au_dcount(dentry) > 0
-	    && (!test || test(dentry, arg)))
-		err = au_dpages_append(dpages, dentry, GFP_ATOMIC);
-	spin_unlock(&dentry->d_lock);
-	if (unlikely(err))
-		goto out;
-
-	/*
-	 * RCU for vfsmount is unnecessary since this is a traverse in a single
-	 * mount
-	 */
-	while (!IS_ROOT(dentry)) {
-		dentry = dentry->d_parent; /* rename_lock is locked */
-		spin_lock(&dentry->d_lock);
-		if (au_dcount(dentry) > 0
-		    && (!test || test(dentry, arg)))
-			err = au_dpages_append(dpages, dentry, GFP_ATOMIC);
-		spin_unlock(&dentry->d_lock);
-		if (unlikely(err))
-			break;
-	}
-
-out:
-	write_sequnlock(&rename_lock);
-	return err;
-}
-
-static inline int au_dcsub_dpages_aufs(struct dentry *dentry, void *arg)
-{
-	return au_di(dentry) && dentry->d_sb == arg;
-}
-
-int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages,
-			    struct dentry *dentry, int do_include)
-{
-	return au_dcsub_pages_rev(dpages, dentry, do_include,
-				  au_dcsub_dpages_aufs, dentry->d_sb);
-}
-
-int au_test_subdir(struct dentry *d1, struct dentry *d2)
-{
-	struct path path[2] = {
-		{
-			.dentry = d1
-		},
-		{
-			.dentry = d2
-		}
-	};
-
-	return path_is_under(path + 0, path + 1);
-}