[Devel] [PATCH 07/10] patch ief_defrag_zoroes.patch

[Dmitry Monakhov]

Signed-off-by: Dmitry Monakhov <dmonakhov at openvz.org>
---
 misc/e4defrag2.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/misc/e4defrag2.c b/misc/e4defrag2.c
index f1db897..8714f47 100644
--- a/misc/e4defrag2.c
+++ b/misc/e4defrag2.c
@@ -1848,6 +1848,7 @@ static int prepare_donor(struct defrag_context *dfx, dgrp_t group,
 		printf("%s grp:%u donor_fd:%d blocks:%llu frag:%u\n",
 		       __func__, group, donor->fd, blocks, max_frag);
 	}
+	assert(blocks);
 
 	/* First try to reuse existing donor if available */
 	if (donor->fd != -1) {
@@ -2267,6 +2268,10 @@ next_cluster:
 	}
 	prev = rfh;
 
+	/* Do we have somthing to relocate */
+	if (!blocks)
+		return 0;
+
 	ret = prepare_donor(dfx, idx, &donor, blocks, dfx->ief_force_local, 2);
 	if (ret) {
 		if (debug_flag & DBG_SCAN)
-- 
1.8.3.1