diff mbox

[3/3] qcow2: reorder fields in Qcow2CachedTable to reduce padding

Message ID 315e562227b2668a0a376ff9eb9138e3b6689882.1432891306.git.berto@igalia.com
State New
Headers show

Commit Message

Alberto Garcia May 29, 2015, 9:24 a.m. UTC 
Changing the current ordering saves 8 bytes per cache entry in x86_64.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 block/qcow2-cache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Kevin Wolf June 2, 2015, 11:07 a.m. UTC | #1 
Am 29.05.2015 um 11:24 hat Alberto Garcia geschrieben:
> Changing the current ordering saves 8 bytes per cache entry in x86_64.
> 
> Signed-off-by: Alberto Garcia <berto@igalia.com>
> Reviewed-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>

Reviewed-by: Kevin Wolf <kwolf@redhat.com>
diff mbox

Patch

diff --git a/block/qcow2-cache.c b/block/qcow2-cache.c
index a215f5b..43590ff 100644
--- a/block/qcow2-cache.c
+++ b/block/qcow2-cache.c
@@ -31,9 +31,9 @@ 
 
 typedef struct Qcow2CachedTable {
     int64_t  offset;
-    bool     dirty;
     uint64_t lru_counter;
     int      ref;
+    bool     dirty;
 } Qcow2CachedTable;
 
 struct Qcow2Cache {