linux-imx

/*

 * ialloc.c

 *

 * PURPOSE

 *  Inode allocation handling routines for the OSTA-UDF(tm) filesystem.

 *

 * COPYRIGHT

 *  This file is distributed under the terms of the GNU General Public

 *  License (GPL). Copies of the GPL can be obtained from:

 *      ftp://prep.ai.mit.edu/pub/gnu/GPL

 *  Each contributing author retains all rights to their own work.

 *

 *  (C) 1998-2001 Ben Fennema

 *

 * HISTORY

 *

 *  02/24/99 blf  Created.

 *

 */

​

#include "udfdecl.h"

#include <linux/fs.h>

#include <linux/sched.h>

#include <linux/slab.h>

​

#include "udf_i.h"

#include "udf_sb.h"

​

void udf_free_inode(struct inode *inode)

{

    struct super_block *sb = inode->i_sb;

    struct udf_sb_info *sbi = UDF_SB(sb);

    struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb);

​

    if (lvidiu) {

        mutex_lock(&sbi->s_alloc_mutex);

        if (S_ISDIR(inode->i_mode))

            le32_add_cpu(&lvidiu->numDirs, -1);

        else

            le32_add_cpu(&lvidiu->numFiles, -1);

        udf_updated_lvid(sb);

        mutex_unlock(&sbi->s_alloc_mutex);

    }

​

    udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1);

}

​

struct inode *udf_new_inode(struct inode *dir, umode_t mode)

{

    struct super_block *sb = dir->i_sb;

    struct udf_sb_info *sbi = UDF_SB(sb);

    struct inode *inode;

    udf_pblk_t block;

    uint32_t start = UDF_I(dir)->i_location.logicalBlockNum;

    struct udf_inode_info *iinfo;

    struct udf_inode_info *dinfo = UDF_I(dir);

    struct logicalVolIntegrityDescImpUse *lvidiu;

    int err;

​

    inode = new_inode(sb);

​

    if (!inode)

        return ERR_PTR(-ENOMEM);