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Commit 617cd5c1 authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: refactor incore dquot initialization functions 



Create two incore dquot initialization functions that will help us to
disentangle dqget and dqread.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
parent 0fcef127

fs/xfs/xfs_dquot.c

+51 −30
Original line number Diff line number Diff line
@@ -499,26 +499,14 @@ xfs_qm_dqtobp( 
	return 0;

}





/*

 * Read in the ondisk dquot using dqtobp() then copy it to an incore version,

 * and release the buffer immediately.

 *

 * If XFS_QMOPT_DQALLOC is set, allocate a dquot on disk if it needed.

 */

int

xfs_qm_dqread(

/* Allocate and initialize everything we need for an incore dquot. */

STATIC struct xfs_dquot *

xfs_dquot_alloc(

	struct xfs_mount	*mp,

	xfs_dqid_t		id,

	uint			type,

	uint			flags,

	struct xfs_dquot	**O_dqpp)

	uint			type)

{

	struct xfs_dquot	*dqp;

	struct xfs_disk_dquot	*ddqp;

	struct xfs_buf		*bp;

	struct xfs_trans	*tp = NULL;

	int			error;



	dqp = kmem_zone_zalloc(xfs_qm_dqzone, KM_SLEEP);
@@ -556,8 +544,54 @@ xfs_qm_dqread( 
		break;

	}



	xfs_qm_dquot_logitem_init(dqp);



	XFS_STATS_INC(mp, xs_qm_dquot);

	return dqp;

}



/* Copy the in-core quota fields in from the on-disk buffer. */

STATIC void

xfs_dquot_from_disk(

	struct xfs_dquot	*dqp,

	struct xfs_disk_dquot	*ddqp)

{

	/* copy everything from disk dquot to the incore dquot */

	memcpy(&dqp->q_core, ddqp, sizeof(xfs_disk_dquot_t));



	/*

	 * Reservation counters are defined as reservation plus current usage

	 * to avoid having to add every time.

	 */

	dqp->q_res_bcount = be64_to_cpu(ddqp->d_bcount);

	dqp->q_res_icount = be64_to_cpu(ddqp->d_icount);

	dqp->q_res_rtbcount = be64_to_cpu(ddqp->d_rtbcount);



	/* initialize the dquot speculative prealloc thresholds */

	xfs_dquot_set_prealloc_limits(dqp);

}



/*

 * Read in the ondisk dquot using dqtobp() then copy it to an incore version,

 * and release the buffer immediately.

 *

 * If XFS_QMOPT_DQALLOC is set, allocate a dquot on disk if it needed.

 */

int

xfs_qm_dqread(

	struct xfs_mount	*mp,

	xfs_dqid_t		id,

	uint			type,

	uint			flags,

	struct xfs_dquot	**O_dqpp)

{

	struct xfs_dquot	*dqp;

	struct xfs_disk_dquot	*ddqp;

	struct xfs_buf		*bp;

	struct xfs_trans	*tp = NULL;

	int			error;



	dqp = xfs_dquot_alloc(mp, id, type);

	trace_xfs_dqread(dqp);



	if (flags & XFS_QMOPT_DQALLOC) {
@@ -582,20 +616,7 @@ xfs_qm_dqread( 
		goto error1;

	}



	/* copy everything from disk dquot to the incore dquot */

	memcpy(&dqp->q_core, ddqp, sizeof(xfs_disk_dquot_t));

	xfs_qm_dquot_logitem_init(dqp);



	/*

	 * Reservation counters are defined as reservation plus current usage

	 * to avoid having to add every time.

	 */

	dqp->q_res_bcount = be64_to_cpu(ddqp->d_bcount);

	dqp->q_res_icount = be64_to_cpu(ddqp->d_icount);

	dqp->q_res_rtbcount = be64_to_cpu(ddqp->d_rtbcount);



	/* initialize the dquot speculative prealloc thresholds */

	xfs_dquot_set_prealloc_limits(dqp);

	xfs_dquot_from_disk(dqp, ddqp);



	/* Mark the buf so that this will stay incore a little longer */

	xfs_buf_set_ref(bp, XFS_DQUOT_REF);