[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 1/3] migration/postcopy: the valid condition is one
From: |
Wei Yang |
Subject: |
[Qemu-devel] [PATCH 1/3] migration/postcopy: the valid condition is one less then end |
Date: |
Thu, 27 Jun 2019 10:08:20 +0800 |
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