GFS2: If we use up our block reservation, request more next time
If we run out of blocks for a given multi-block allocation, we obviously
did not reserve enough. We should reserve more blocks for the next
reservation to reduce fragmentation. This patch increases the size hint
for reservations when they run out.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index f4e4a0c..9150207 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -2251,6 +2251,9 @@
trace_gfs2_rs(rs, TRACE_RS_CLAIM);
if (rs->rs_free && !ret)
goto out;
+ /* We used up our block reservation, so we should
+ reserve more blocks next time. */
+ atomic_add(RGRP_RSRV_ADDBLKS, &rs->rs_sizehint);
}
__rs_deltree(rs);
}