linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (c) 2000-2005 Silicon Graphics, Inc.

 * All Rights Reserved.

 */

#ifndef __XFS_QUOTA_H__

#define __XFS_QUOTA_H__

​

#include "xfs_quota_defs.h"

​

/*

 * Kernel only quota definitions and functions

 */

​

struct xfs_trans;

​

/*

 * This check is done typically without holding the inode lock;

 * that may seem racy, but it is harmless in the context that it is used.

 * The inode cannot go inactive as long a reference is kept, and

 * therefore if dquot(s) were attached, they'll stay consistent.

 * If, for example, the ownership of the inode changes while

 * we didn't have the inode locked, the appropriate dquot(s) will be

 * attached atomically.

 */

#define XFS_NOT_DQATTACHED(mp, ip) \

    ((XFS_IS_UQUOTA_ON(mp) && (ip)->i_udquot == NULL) || \

     (XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \

     (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL))

​

#define XFS_QM_NEED_QUOTACHECK(mp) \

    ((XFS_IS_UQUOTA_ON(mp) && \

        (mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \

     (XFS_IS_GQUOTA_ON(mp) && \

        (mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \

     (XFS_IS_PQUOTA_ON(mp) && \

        (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0))

​

static inline uint

xfs_quota_chkd_flag(

    uint        dqtype)

{

    switch (dqtype) {

    case XFS_DQ_USER:

        return XFS_UQUOTA_CHKD;

    case XFS_DQ_GROUP:

        return XFS_GQUOTA_CHKD;

    case XFS_DQ_PROJ:

        return XFS_PQUOTA_CHKD;

    default:

        return 0;

    }

}

​

/*

 * The structure kept inside the xfs_trans_t keep track of dquot changes

 * within a transaction and apply them later.

 */

typedef struct xfs_dqtrx {

    struct xfs_dquot *qt_dquot;   /* the dquot this refers to */

    ulong       qt_blk_res;   /* blks reserved on a dquot */

    ulong       qt_ino_res;   /* inode reserved on a dquot */

    ulong       qt_ino_res_used;  /* inodes used from the reservation */