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From: | Max Reitz |
Subject: | Re: [Qemu-devel] [PATCH 3/3] qcow2: reorder fields in Qcow2CachedTable to reduce padding |
Date: | Tue, 26 May 2015 18:10:11 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 |
On 18.05.2015 18:48, Alberto Garcia wrote:
Changing the current ordering saves 8 bytes per cache entry in x86_64.
Hm, not seven?
Signed-off-by: Alberto Garcia <address@hidden> --- block/qcow2-cache.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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 {
With "7" above, or an explanation why it actually is 8: Reviewed-by: Max Reitz <address@hidden>
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