| commit | f76889e7b947d896db51be8a4d9c941c2f70365a | |
| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | |
| Tue, 4 Jun 2019 16:15:04 +0000 (4 19:15 +0300) | ||
| committer | Stefan Hajnoczi <stefanha@redhat.com> | |
| Tue, 27 Aug 2019 13:52:45 +0000 (27 14:52 +0100) | ||
| tree | d233a85f4d166859d08cf38aa556f6297c5f59a6 | treesnapshot (tar.gz zip) |
| parent | d953169d4840f312d3b9a54952f4a7ccfcb3b311 | commitdiff |
util/iov: improve qemu_iovec_is_zero
We'll need to check a part of qiov soon, so implement it now.
Optimization with align down to 4 * sizeof(long) is dropped due to:
1. It is strange: it aligns length of the buffer, but where is a
guarantee that buffer pointer is aligned itself?
2. buffer_is_zero() is a better place for optimizations and it has
them.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190604161514.262241-3-vsementsov@virtuozzo.com
Message-Id: <20190604161514.262241-3-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
We'll need to check a part of qiov soon, so implement it now.
Optimization with align down to 4 * sizeof(long) is dropped due to:
1. It is strange: it aligns length of the buffer, but where is a
guarantee that buffer pointer is aligned itself?
2. buffer_is_zero() is a better place for optimizations and it has
them.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190604161514.262241-3-vsementsov@virtuozzo.com
Message-Id: <20190604161514.262241-3-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| block/io.c | diffblobblamehistory | |
| include/qemu/iov.h | diffblobblamehistory | |
| util/iov.c | diffblobblamehistory |