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由 Guido Günther 提交于
While a zero allocation in safezero should be fine it isn't when we use posix_fallocate which returns EINVAL on a zero allocation. While we could skip the zero allocation in safezero_posix_fallocate it's an optimization to do it for all allocations. This fixes vm installation via virtinst for me which otherwise aborts like: Starting install... Retrieving file linux... | 5.9 MB 00:01 ... Retrieving file initrd.gz... | 29 MB 00:07 ... ERROR Couldn't create storage volume 'virtinst-linux.sBgds4': 'cannot fill file '/var/lib/libvirt/boot/virtinst-linux.sBgds4': Invalid argument' The error was introduced by e30297b0 as spotted by Chunyan Liu
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