Currently, we calculate the attribute set transaction log space reservation at runtime in two parts:
1) XFS_ATTRSET_LOG_RES() which is calcuated out at mount time.
2) ((ext * (mp)->m_sb.sb_sectsize) + \
(ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
(128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))) which is calculated out at runtime since
it depend on the extent length in blocks.
This patch change the XFS_ATTRSET_LOG_RES(mp) to XFS_ATTRSETM_LOG_RES(mp) that it is still
figured out at mount time, and introduce a new XFS_ATTRSETRT_LOG_RES(mp) which would be used
to calculate out the unit of the log space reservation for one block. Then we can get the
runtime spaces via: XFS_ATTRSETM_LOG_RES(mp) + XFS_ATTRSETRT_LOG_RES(mp) * ext, so that
we don't need to export the xfs_calc_buf_res() function.
Signed-off-by: Jie Liu <jeff.liu@xxxxxxxxxx>
---
fs/xfs/xfs_attr.c | 9 ++++++---
fs/xfs/xfs_mount.h | 3 ++-
fs/xfs/xfs_trans.c | 28 ++++++++++++++++++++++++----
fs/xfs/xfs_trans.h | 11 ++++-------
4 files changed, 36 insertions(+), 15 deletions(-)
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index 0ca1f0b..20d114e 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -300,9 +300,12 @@ xfs_attr_set_int(
if (rsvd)
args.trans->t_flags |= XFS_TRANS_RESERVE;
- if ((error = xfs_trans_reserve(args.trans, args.total,
- XFS_ATTRSET_LOG_RES(mp, args.total), 0,
- XFS_TRANS_PERM_LOG_RES, XFS_ATTRSET_LOG_COUNT))) {
+ error = xfs_trans_reserve(args.trans, args.total,
+ XFS_ATTRSETM_LOG_RES(mp) +
+ XFS_ATTRSETRT_LOG_RES(mp) * args.total,
+ 0, XFS_TRANS_PERM_LOG_RES,
+ XFS_ATTRSET_LOG_COUNT);
+ if (error) {
xfs_trans_cancel(args.trans, 0);
return(error);
}
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 97f7962..5727b37 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -34,7 +34,8 @@ typedef struct xfs_trans_reservations {
uint tr_addafork; /* cvt inode to attributed trans */
uint tr_writeid; /* write setuid/setgid file */
uint tr_attrinval; /* attr fork buffer invalidation */
- uint tr_attrset; /* set/create an attribute */
+ uint tr_attrsetm; /* set/create an attribute at mount time */
+ uint tr_attrsetrt; /* set/create an attribute at runtime */
uint tr_attrrm; /* remove an attribute */
uint tr_clearagi; /* clear bad agi unlinked ino bucket */
uint tr_growrtalloc; /* grow realtime allocations */
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index 398c2a0..4e9e2d3 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -488,17 +488,18 @@ xfs_calc_attrinval_reservation(
}
/*
- * Setting an attribute.
+ * Setting an attribute at mount time.
* the inode getting the attribute
* the superblock for allocations
* the agfs extents are allocated from
* the attribute btree * max depth
* the inode allocation btree
* Since attribute transaction space is dependent on the size of the attribute,
- * the calculation is done partially at mount time and partially at runtime.
+ * the calculation is done partially at mount time and partially at runtime(see
+ * below).
*/
STATIC uint
-xfs_calc_attrset_reservation(
+xfs_calc_attrsetm_reservation(
struct xfs_mount *mp)
{
return XFS_DQUOT_LOGRES(mp) +
@@ -508,6 +509,24 @@ xfs_calc_attrset_reservation(
}
/*
+ * Setting an attribute at runtime, transaction space unit per block.
+ * the superblock for allocations: sector size
+ * the inode bmap btree could join or split: max depth * block size
+ * Since the runtime attribute transaction space is dependent on the total
+ * blocks needed for the 1st bmap, here we calculate out the space unit for
+ * one block so that the caller could figure out the total space according
+ * to the attibute extent length in blocks by: ext * XFS_ATTRSETRT_LOG_RES(mp).
+ */
+STATIC uint
+xfs_calc_attrsetrt_reservation(
+ struct xfs_mount *mp)
+{
+ return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
+ xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK),
+ XFS_FSB_TO_B(mp, 1));
+}
+
+/*
* Removing an attribute.
* the inode: inode size
* the attribute btree could join: max depth * block size
@@ -662,7 +681,8 @@ xfs_trans_init(
resp->tr_writeid = xfs_calc_writeid_reservation(mp);
resp->tr_addafork = xfs_calc_addafork_reservation(mp);
resp->tr_attrinval = xfs_calc_attrinval_reservation(mp);
- resp->tr_attrset = xfs_calc_attrset_reservation(mp);
+ resp->tr_attrsetm = xfs_calc_attrsetm_reservation(mp);
+ resp->tr_attrsetrt = xfs_calc_attrsetrt_reservation(mp);
resp->tr_attrrm = xfs_calc_attrrm_reservation(mp);
resp->tr_clearagi = xfs_calc_clear_agi_bucket_reservation(mp);
resp->tr_growrtalloc = xfs_calc_growrtalloc_reservation(mp);
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 69a05a2..466c6f7 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -252,15 +252,12 @@ struct xfs_log_item_desc {
* as long as SWRITE logs the entire inode core
*/
#define XFS_FSYNC_TS_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
-#define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
+#define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
#define XFS_ADDAFORK_LOG_RES(mp) ((mp)->m_reservations.tr_addafork)
#define XFS_ATTRINVAL_LOG_RES(mp) ((mp)->m_reservations.tr_attrinval)
-#define XFS_ATTRSET_LOG_RES(mp, ext) \
- ((mp)->m_reservations.tr_attrset + \
- (ext * (mp)->m_sb.sb_sectsize) + \
- (ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
- (128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))
-#define XFS_ATTRRM_LOG_RES(mp) ((mp)->m_reservations.tr_attrrm)
+#define XFS_ATTRSETM_LOG_RES(mp) ((mp)->m_reservations.tr_attrsetm)
+#define XFS_ATTRSETRT_LOG_RES(mp) ((mp)->m_reservations.tr_attrsetrt)
+#define XFS_ATTRRM_LOG_RES(mp) ((mp)->m_reservations.tr_attrrm)
#define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp) ((mp)->m_reservations.tr_clearagi)
#define XFS_QM_SBCHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_qm_sbchange)
#define XFS_QM_SETQLIM_LOG_RES(mp) ((mp)->m_reservations.tr_qm_setqlim)
--
1.7.9.5
_______________________________________________
xfs mailing list
xfs@xxxxxxxxxxx
http://oss.sgi.com/mailman/listinfo/xfs
