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authorPaolo Bonzini <pbonzini@redhat.com>2013-11-22 13:39:55 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2013-12-03 15:26:49 +0100
commit260a82e524b7f86c12b8e39d4c3f208af95645f7 (patch)
tree866cf9e47120f5884e7df2585090201cbed20370 /include/exec
parentfa6252b0565526ec2347e248172f91771e0d9f47 (diff)
raw-posix: implement write_zeroes with MAY_UNMAP for files
Writing zeroes to a file can be done by punching a hole if MAY_UNMAP is set. Note that in this case ENOTSUP is not ignored, but makes the block layer fall back to the generic implementation. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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