On 01/24/13 05:13, Jeff Liu wrote:
Currently, we calculate the attribute set transaction log space reservation at runtime in
two parts:
1) XFS_ATTRSET_LOG_RES() which is calculated 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(-)
Looks good.
Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
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