dm mpath: reduce memory pressure when requeuing
When multipath needs to requeue I/O in the block layer the per-request context shouldn't be allocated, as it will be freed immediately afterwards anyway. Avoiding this memory allocation will reduce memory pressure during requeuing. Signed-off-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NMike Snitzer <snitzer@redhat.com> Reviewed-by: NJun'ichi Nomura <j-nomura@ce.jp.nec.com>
Showing
想要评论请 注册 或 登录