- purge the write cache before truncate stomps on the local i_size so that we

  don't zero-extend the file when truncate's lock acquisition purges the
  writeback after having updated the i_size.  I'm not sure how 2.5 will do this,
  but it probably needs to.

diff --git a/lustre/llite/iod.c b/lustre/llite/iod.c
index 57ad39a..3a045f4 100644 (file)
--- a/lustre/llite/iod.c
+++ b/lustre/llite/iod.c
@@ -140,8 +140,9 @@ static int llwp_consume_page(struct ll_writeback_pages *llwp,
          */
         LASSERT(pg->count >= 0);
 
-        CDEBUG(D_CACHE, "brw_page %p: off "LPU64" cnt %d, page %p: ind %ld\n",
-                        pg, pg->off, pg->count, page, page->index);
+        CDEBUG(D_CACHE, "brw_page %p: off "LPU64" cnt %d, page %p: ind %ld"
+                        " i_size: "LPU64"\n", pg, pg->off, pg->count, page, 
+                        page->index, inode->i_size);
 
         if ( llwp->num_frags == 3 || llwp->num_pages == LLWP_MAX_PAGES )
                 return -1;