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由 Steve French 提交于
fallocate -z (FALLOC_FL_ZERO_RANGE) can map to SMB3 FSCTL_SET_ZERO_DATA SMB3 FSCTL but FALLOC_FL_ZERO_RANGE when called without the FALLOC_FL_KEEPSIZE flag set could want the file size changed so we can not support that subcase unless the file is cached (and thus we know the file size). Signed-off-by: NSteve French <smfrench@gmail.com> Reviewed-by: NPavel Shilovsky <pshilovsky@samba.org>
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