| commit | 6f5f060b736cedc2d962114d20805fdd2889513a | |
| author | Kevin Wolf <kwolf@redhat.com> | |
| Mon, 13 Sep 2010 16:24:10 +0000 (13 18:24 +0200) | ||
| committer | Kevin Wolf <kwolf@redhat.com> | |
| Tue, 21 Sep 2010 13:39:43 +0000 (21 15:39 +0200) | ||
| tree | 8589b132acaa662598a1954c4cc5461ed6b204f2 | treesnapshot (tar.gz zip) |
| parent | bd28f835652e396841bb73080a07bcc08fe21bf0 | commitdiff |
qcow2: Avoid bounce buffers for AIO write requests
qcow2 used to use bounce buffers for any AIO requests. This does not only imply
unnecessary copying, but also unbounded allocations which should be avoided.
This patch removes bounce buffers from the normal AIO write path. Encrypted
images continue to use a bounce buffer, however with constant size.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
qcow2 used to use bounce buffers for any AIO requests. This does not only imply
unnecessary copying, but also unbounded allocations which should be avoided.
This patch removes bounce buffers from the normal AIO write path. Encrypted
images continue to use a bounce buffer, however with constant size.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| block/qcow2.c | diffblobblamehistory |