2 files changed, 10 insertions, 2 deletions

diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 7ec89fc05b2b..aecf2519db76 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -1268,6 +1268,14 @@ xfs_vm_writepage(
         if (!page_has_buffers(page))
                 create_empty_buffers(page, 1 << inode->i_blkbits, 0);
 
+
+        /*
+         *  VM calculation for nr_to_write seems off.  Bump it way
+         *  up, this gets simple streaming writes zippy again.
+         *  To be reviewed again after Jens' writeback changes.
+         */
+        wbc->nr_to_write *= 4;
+
         /*
          * Convert delayed allocate, unwritten or unmapped space
          * to real space and flush out to disk.
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 58973bb46038..8070b34cc287 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -680,8 +680,8 @@ xfs_vn_fiemap(
         else
                 bm.bmv_length = BTOBB(length);
 
-        /* our formatter will tell xfs_getbmap when to stop. */
-        bm.bmv_count = MAXEXTNUM;
+        /* We add one because in getbmap world count includes the header */
+        bm.bmv_count = fieinfo->fi_extents_max + 1;
         bm.bmv_iflags = BMV_IF_PREALLOC;
         if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
                 bm.bmv_iflags |= BMV_IF_ATTRFORK;