Commit b381bead authored by Steven Whitehouse's avatar Steven Whitehouse
Browse files

[GFS2] Remove unused file resize.c 



The code in this file is no longer used as the rindex file is
now accessible to userspace, so can be read/written directly.

Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
parent aa6a85a9

fs/gfs2/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -30,7 +30,6 @@ gfs2-y := \ 
	ops_vm.o \

	page.o \

	quota.o \

	resize.o \

	recovery.o \

	rgrp.o \

	super.o \

fs/gfs2/resize.c

deleted100644 → 0
+0 −291
Original line number Diff line number Diff line 
/*

 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.

 * Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.

 *

 * This copyrighted material is made available to anyone wishing to use,

 * modify, copy, or redistribute it subject to the terms and conditions

 * of the GNU General Public License v.2.

 */



#include <linux/sched.h>

#include <linux/slab.h>

#include <linux/spinlock.h>

#include <linux/completion.h>

#include <linux/buffer_head.h>

#include <asm/semaphore.h>



#include "gfs2.h"

#include "bmap.h"

#include "dir.h"

#include "glock.h"

#include "inode.h"

#include "jdata.h"

#include "meta_io.h"

#include "quota.h"

#include "resize.h"

#include "rgrp.h"

#include "super.h"

#include "trans.h"



/* A single transaction needs to add the structs to rindex and make the

   statfs change. */



int gfs2_resize_add_rgrps(struct gfs2_sbd *sdp, char __user *buf,

			  unsigned int size)

{

	unsigned int num = size / sizeof(struct gfs2_rindex);

	struct gfs2_inode *ip = sdp->sd_rindex;

	struct gfs2_alloc *al = NULL;

	struct gfs2_holder i_gh;

	unsigned int data_blocks, ind_blocks;

	int alloc_required;

	unsigned int x;

	int error;



	gfs2_write_calc_reserv(ip, size, &data_blocks, &ind_blocks);



	error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE,

				   LM_FLAG_PRIORITY | GL_SYNC, &i_gh);

	if (error)

		return error;



	if (!gfs2_is_jdata(ip)) {

		gfs2_consist_inode(ip);

		error = -EIO;

		goto out;

	}



	error = gfs2_write_alloc_required(ip, ip->i_di.di_size, size,

					  &alloc_required);

	if (error)

		goto out;



	if (alloc_required) {

		al = gfs2_alloc_get(ip);



		al->al_requested = data_blocks + ind_blocks;



		error = gfs2_inplace_reserve(ip);

		if (error)

			goto out_alloc;



		error = gfs2_trans_begin(sdp,

					 al->al_rgd->rd_ri.ri_length +

					 data_blocks + ind_blocks +

					 RES_DINODE + RES_STATFS, 0);

		if (error)

			goto out_relse;

	} else {

		error = gfs2_trans_begin(sdp, data_blocks +

					 RES_DINODE + RES_STATFS, 0);

		if (error)

			goto out;

	}



	for (x = 0; x < num; x++) {

		struct gfs2_rindex ri;

		char ri_buf[sizeof(struct gfs2_rindex)];



		error = copy_from_user(&ri, buf, sizeof(struct gfs2_rindex));

		if (error) {

			error = -EFAULT;

			goto out_trans;

		}

		gfs2_rindex_out(&ri, ri_buf);



		error = gfs2_jdata_write_mem(ip, ri_buf, ip->i_di.di_size,

					     sizeof(struct gfs2_rindex));

		if (error < 0)

			goto out_trans;

		gfs2_assert_withdraw(sdp, error == sizeof(struct gfs2_rindex));

		error = 0;



		gfs2_statfs_change(sdp, ri.ri_data, ri.ri_data, 0);



		buf += sizeof(struct gfs2_rindex);

	}



 out_trans:

	gfs2_trans_end(sdp);



 out_relse:

	if (alloc_required)

		gfs2_inplace_release(ip);



 out_alloc:

	if (alloc_required)

		gfs2_alloc_put(ip);



 out:

	ip->i_gl->gl_vn++;

	gfs2_glock_dq_uninit(&i_gh);



	return error;

}



static void drop_dentries(struct gfs2_inode *ip)

{

	struct inode *inode;

	struct dentry *d;



	inode = gfs2_ip2v_lookup(ip);

	if (!inode)

		return;



 restart:

	spin_lock(&dcache_lock);

	list_for_each_entry(d, &inode->i_dentry, d_alias) {

		if (d_unhashed(d))

			continue;

		dget_locked(d);

		__d_drop(d);

		spin_unlock(&dcache_lock);

		dput(d);

		goto restart;

	}

	spin_unlock(&dcache_lock);



	iput(inode);

}



/* This is called by an ioctl to rename an ordinary file that's represented

   in the vfs to a hidden system file that isn't represented in the vfs.  It's

   used to add journals, along with the associated system files, to a fs. */



int gfs2_rename2system(struct gfs2_inode *ip,

		       struct gfs2_inode *old_dip, char *old_name,

		       struct gfs2_inode *new_dip, char *new_name)

{

	struct gfs2_sbd *sdp = ip->i_sbd;

	struct gfs2_holder ghs[3];

	struct qstr old_qstr, new_qstr;

	struct gfs2_inum inum;

	int alloc_required;

	struct buffer_head *dibh;

	int error;



	gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, ghs);

	gfs2_holder_init(old_dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1);

	gfs2_holder_init(new_dip->i_gl, LM_ST_EXCLUSIVE, GL_SYNC, ghs + 2);



	error = gfs2_glock_nq_m(3, ghs);

	if (error)

		goto out;	



	error = -EMLINK;

	if (ip->i_di.di_nlink != 1)

		goto out_gunlock;

	error = -EINVAL;

	if (!S_ISREG(ip->i_di.di_mode))

		goto out_gunlock;



	old_qstr.name = old_name;

	old_qstr.len = strlen(old_name);

	error = gfs2_dir_search(old_dip, &old_qstr, &inum, NULL);

	switch (error) {

	case 0:

		break;

	default:

		goto out_gunlock;

	}



	error = -EINVAL;

	if (!gfs2_inum_equal(&inum, &ip->i_num))

		goto out_gunlock;



	new_qstr.name = new_name;

	new_qstr.len = strlen(new_name);

	error = gfs2_dir_search(new_dip, &new_qstr, NULL, NULL);

	switch (error) {

	case -ENOENT:

		break;

	case 0:

		error = -EEXIST;

	default:

		goto out_gunlock;

	}



	gfs2_alloc_get(ip);



	error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);

	if (error)

		goto out_alloc;



	error = gfs2_diradd_alloc_required(new_dip, &new_qstr, &alloc_required);

	if (error)

		goto out_unhold;



	if (alloc_required) {

		struct gfs2_alloc *al = gfs2_alloc_get(new_dip);



		al->al_requested = sdp->sd_max_dirres;



		error = gfs2_inplace_reserve(new_dip);

		if (error)

			goto out_alloc2;



		error = gfs2_trans_begin(sdp,

					 sdp->sd_max_dirres +

					 al->al_rgd->rd_ri.ri_length +

					 3 * RES_DINODE + RES_LEAF +

					 RES_STATFS + RES_QUOTA, 0);

		if (error)

			goto out_ipreserv;

	} else {

		error = gfs2_trans_begin(sdp,

					 3 * RES_DINODE + 2 * RES_LEAF +

					 RES_QUOTA, 0);

		if (error)

			goto out_unhold;

	}

	

	error = gfs2_dir_del(old_dip, &old_qstr);

	if (error)

		goto out_trans;



	error = gfs2_dir_add(new_dip, &new_qstr, &ip->i_num,

			     IF2DT(ip->i_di.di_mode));

	if (error)

		goto out_trans;



	gfs2_quota_change(ip, -ip->i_di.di_blocks, ip->i_di.di_uid,

			  ip->i_di.di_gid);



	error = gfs2_meta_inode_buffer(ip, &dibh);

	if (error)

		goto out_trans;

	ip->i_di.di_flags |= GFS2_DIF_SYSTEM;

	gfs2_trans_add_bh(ip->i_gl, dibh, 1);

	gfs2_dinode_out(&ip->i_di, dibh->b_data);

	brelse(dibh);



	drop_dentries(ip);



 out_trans:

	gfs2_trans_end(sdp);



 out_ipreserv:

	if (alloc_required)

		gfs2_inplace_release(new_dip);



 out_alloc2:

	if (alloc_required)

		gfs2_alloc_put(new_dip);



 out_unhold:

	gfs2_quota_unhold(ip);



 out_alloc:

	gfs2_alloc_put(ip);



 out_gunlock:

	gfs2_glock_dq_m(3, ghs);



 out:

	gfs2_holder_uninit(ghs);

	gfs2_holder_uninit(ghs + 1);

	gfs2_holder_uninit(ghs + 2);



	return error;

}

fs/gfs2/resize.h

deleted100644 → 0
+0 −19
Original line number Diff line number Diff line 
/*

 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.

 * Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.

 *

 * This copyrighted material is made available to anyone wishing to use,

 * modify, copy, or redistribute it subject to the terms and conditions

 * of the GNU General Public License v.2.

 */



#ifndef __RESIZE_DOT_H__

#define __RESIZE_DOT_H__



int gfs2_resize_add_rgrps(struct gfs2_sbd *sdp, char __user *buf,

			  unsigned int size);

int gfs2_rename2system(struct gfs2_inode *ip,

		       struct gfs2_inode *old_dip, char *old_name,

		       struct gfs2_inode *new_dip, char *new_name);



#endif /* __RESIZE_DOT_H__ */