[Qemu-devel] [PATCH 1/3] migration/postcopy: the valid condition is one less then end

[Wei Yang]

If one equals end, it means we have gone through the whole bitmap.

Use a more restrict check to skip a unnecessary condition.

Signed-off-by: Wei Yang <address@hidden>
---
 migration/ram.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/migration/ram.c b/migration/ram.c
index 908517fc2b..b78169e811 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -2777,7 +2777,7 @@ static int postcopy_send_discard_bm_ram(MigrationState 
*ms,
     for (current = 0; current < end; ) {
         unsigned long one = find_next_bit(unsentmap, end, current);
 
-        if (one <= end) {
+        if (one < end) {
             unsigned long zero = find_next_zero_bit(unsentmap, end, one + 1);
             unsigned long discard_length;
 
-- 
2.19.1