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Commit a7bd794a authored by Jeff Liu's avatar Jeff Liu Committed by Ben Myers
Browse files

xfs: introduce XFS_SB_LOG_RES() for transactions that modify sb on disk 



Introduce a new transaction space reservation XFS_SB_LOG_RES() for
those transactions that need to modify the superblock on disk.

Signed-off-by: default avatarJie Liu <jeff.liu@oracle.com>
CC: Dave Chinner <david@fromorbit.com>
Reviewed-by: default avatarMark Tinguely <tinguely@sgi.com>
Signed-off-by: default avatarBen Myers <bpm@sgi.com>
parent 762d7ba6

fs/xfs/xfs_mount.h

+1 −0
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ typedef struct xfs_trans_reservations { 
	uint	tr_qm_dqalloc;	/* allocate quota on disk */

	uint	tr_qm_quotaoff;	/* turn quota off */

	uint	tr_qm_equotaoff;/* end of turn quota off */

	uint	tr_sb;		/* modify superblock */

} xfs_trans_reservations_t;



#ifndef __KERNEL__

fs/xfs/xfs_trans.c

+12 −0
Original line number Diff line number Diff line
@@ -605,6 +605,17 @@ xfs_calc_qm_quotaoff_end_reservation( 
	return sizeof(struct xfs_qoff_logitem) * 2;

}



/*

 * Syncing the incore super block changes to disk.

 *     the super block to reflect the changes: sector size

 */

STATIC uint

xfs_calc_sb_reservation(

	struct xfs_mount	*mp)

{

	return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);

}



/*

 * Initialize the precomputed transaction reservation values

 * in the mount structure.
@@ -641,6 +652,7 @@ xfs_trans_init( 
	resp->tr_qm_dqalloc = xfs_calc_qm_dqalloc_reservation(mp);

	resp->tr_qm_quotaoff = xfs_calc_qm_quotaoff_reservation(mp);

	resp->tr_qm_equotaoff = xfs_calc_qm_quotaoff_end_reservation(mp);

	resp->tr_sb = xfs_calc_sb_reservation(mp);

}



/*

fs/xfs/xfs_trans.h

+1 −0
Original line number Diff line number Diff line
@@ -267,6 +267,7 @@ struct xfs_log_item_desc { 
#define XFS_QM_DQALLOC_LOG_RES(mp)	((mp)->m_reservations.tr_qm_dqalloc)

#define XFS_QM_QUOTAOFF_LOG_RES(mp)	((mp)->m_reservations.tr_qm_quotaoff)

#define XFS_QM_QUOTAOFF_END_LOG_RES(mp)	((mp)->m_reservations.tr_qm_equotaoff)

#define XFS_SB_LOG_RES(mp)		((mp)->m_reservations.tr_sb)



/*

 * Various log count values.