xfs: increase log reservations for reflink

Increase the log reservations to handle the increased rolling that
happens at the end of copy-on-write operations.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

2 files changed, 15 insertions, 3 deletions

diff --git a/fs/xfs/libxfs/xfs_trans_resv.c b/fs/xfs/libxfs/xfs_trans_resv.c
index a59838f1627b..b456cca1bfb2 100644
--- a/fs/xfs/libxfs/xfs_trans_resv.c
+++ b/fs/xfs/libxfs/xfs_trans_resv.c
@@ -812,11 +812,18 @@ xfs_trans_resv_calc(
          * require a permanent reservation on space.
          */
         resp->tr_write.tr_logres = xfs_calc_write_reservation(mp);
-        resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT;
+        if (xfs_sb_version_hasreflink(&mp->m_sb))
+                resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT_REFLINK;
+        else
+                resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT;
         resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
 
         resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp);
-        resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT;
+        if (xfs_sb_version_hasreflink(&mp->m_sb))
+                resp->tr_itruncate.tr_logcount =
+                                XFS_ITRUNCATE_LOG_COUNT_REFLINK;
+        else
+                resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT;
         resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
 
         resp->tr_rename.tr_logres = xfs_calc_rename_reservation(mp);
@@ -873,7 +880,10 @@ xfs_trans_resv_calc(
         resp->tr_growrtalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
 
         resp->tr_qm_dqalloc.tr_logres = xfs_calc_qm_dqalloc_reservation(mp);
-        resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT;
+        if (xfs_sb_version_hasreflink(&mp->m_sb))
+                resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT_REFLINK;
+        else
+                resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT;
         resp->tr_qm_dqalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
 
         /*
diff --git a/fs/xfs/libxfs/xfs_trans_resv.h b/fs/xfs/libxfs/xfs_trans_resv.h
index 36a15110c1fe..b7e5357d060a 100644
--- a/fs/xfs/libxfs/xfs_trans_resv.h
+++ b/fs/xfs/libxfs/xfs_trans_resv.h
@@ -87,6 +87,7 @@ struct xfs_trans_resv {
 #define XFS_DEFAULT_LOG_COUNT           1
 #define XFS_DEFAULT_PERM_LOG_COUNT      2
 #define XFS_ITRUNCATE_LOG_COUNT         2
+#define XFS_ITRUNCATE_LOG_COUNT_REFLINK 8
 #define XFS_INACTIVE_LOG_COUNT          2
 #define XFS_CREATE_LOG_COUNT            2
 #define XFS_CREATE_TMPFILE_LOG_COUNT    2
@@ -96,6 +97,7 @@ struct xfs_trans_resv {
 #define XFS_LINK_LOG_COUNT              2
 #define XFS_RENAME_LOG_COUNT            2
 #define XFS_WRITE_LOG_COUNT             2
+#define XFS_WRITE_LOG_COUNT_REFLINK     8
 #define XFS_ADDAFORK_LOG_COUNT          2
 #define XFS_ATTRINVAL_LOG_COUNT         1
 #define XFS_ATTRSET_LOG_COUNT           3