Introduce a new transaction space reservation XFS_SB_LOG_RES() for
those transactions that need to modify the superblock on disk.
Signed-off-by: Jie Liu <jeff.liu@xxxxxxxxxx>
CC: Dave Chinner <david@xxxxxxxxxxxxx>
Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
---
fs/xfs/xfs_mount.h | 1 +
fs/xfs/xfs_trans.c | 12 ++++++++++++
fs/xfs/xfs_trans.h | 1 +
3 files changed, 14 insertions(+)
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index c5abd86..b9b7dbc 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -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__
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index d43e839..3e4c5f1 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -605,6 +605,17 @@ xfs_calc_qm_quotaoff_end_reservation(
}
/*
+ * 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.
*/
@@ -640,6 +651,7 @@ 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);
}
/*
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 77ccc36..a150074 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -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.
--
1.7.9.5
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