linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

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

 * Copyright (c) 2016-2018 Christoph Hellwig.

 * All Rights Reserved.

 */

#include "xfs.h"

#include "xfs_shared.h"

#include "xfs_format.h"

#include "xfs_log_format.h"

#include "xfs_trans_resv.h"

#include "xfs_mount.h"

#include "xfs_inode.h"

#include "xfs_trans.h"

#include "xfs_inode_item.h"

#include "xfs_alloc.h"

#include "xfs_error.h"

#include "xfs_iomap.h"

#include "xfs_trace.h"

#include "xfs_bmap.h"

#include "xfs_bmap_util.h"

#include "xfs_bmap_btree.h"

#include "xfs_reflink.h"

#include <linux/writeback.h>

​

/*

 * structure owned by writepages passed to individual writepage calls

 */

struct xfs_writepage_ctx {

    struct xfs_bmbt_irec    imap;

    int         fork;

    unsigned int        data_seq;

    unsigned int        cow_seq;

    struct xfs_ioend    *ioend;

};

​

struct block_device *

xfs_find_bdev_for_inode(

    struct inode        *inode)

{

    struct xfs_inode    *ip = XFS_I(inode);

    struct xfs_mount    *mp = ip->i_mount;

​

    if (XFS_IS_REALTIME_INODE(ip))

        return mp->m_rtdev_targp->bt_bdev;

    else

        return mp->m_ddev_targp->bt_bdev;

}

​

struct dax_device *

xfs_find_daxdev_for_inode(

    struct inode        *inode)

{

    struct xfs_inode    *ip = XFS_I(inode);

    struct xfs_mount    *mp = ip->i_mount;

​

    if (XFS_IS_REALTIME_INODE(ip))

        return mp->m_rtdev_targp->bt_daxdev;

    else

        return mp->m_ddev_targp->bt_daxdev;

}

​

static void

xfs_finish_page_writeback(

    struct inode        *inode,

    struct bio_vec  *bvec,

    int         error)

{

    struct iomap_page   *iop = to_iomap_page(bvec->bv_page);

​

    if (error) {

        SetPageError(bvec->bv_page);

        mapping_set_error(inode->i_mapping, -EIO);

    }

​

    ASSERT(iop || i_blocksize(inode) == PAGE_SIZE);

    ASSERT(!iop || atomic_read(&iop->write_count) > 0);

​

    if (!iop || atomic_dec_and_test(&iop->write_count))

        end_page_writeback(bvec->bv_page);

}

​

/*

 * We're now finished for good with this ioend structure.  Update the page

 * state, release holds on bios, and finally free up memory.  Do not use the

 * ioend after this.

 */

STATIC void

xfs_destroy_ioend(

    struct xfs_ioend    *ioend,

    int         error)

{