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| author | Jeff Liu <jeff.liu@oracle.com> | 2013-01-28 21:27:25 +0800 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2013-02-01 14:46:35 -0600 |
| commit | a7bd794a0f489a66ad595f2bcab0eac8f232e409 (patch) | |
| tree | 70157837040a6839f2371955925952e994c4c2d1 | |
| parent | 762d7ba657ed4a0934b4da7dcef058012f252e0f (diff) | |
| download | lwn-a7bd794a0f489a66ad595f2bcab0eac8f232e409.tar.gz lwn-a7bd794a0f489a66ad595f2bcab0eac8f232e409.zip | |
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: Jie Liu <jeff.liu@oracle.com>
CC: Dave Chinner <david@fromorbit.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
| -rw-r--r-- | fs/xfs/xfs_mount.h | 1 | ||||
| -rw-r--r-- | fs/xfs/xfs_trans.c | 12 | ||||
| -rw-r--r-- | fs/xfs/xfs_trans.h | 1 |
3 files changed, 14 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index b46009dc7b13..2e30a9a84f9f 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 84643fa5e465..72da2aa08421 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -606,6 +606,17 @@ 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. */ @@ -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); } /* diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index 57339e404cf6..d06919e28904 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. |