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Re: Create new files as sparse on NT systems. (2nd try)
On Thu, Feb 20, 2003 at 11:16:06AM +0100, Corinna Vinschen wrote:
>On Tue, Feb 18, 2003 at 10:51:31PM +0100, Vaclav Haisman wrote:
>> 2003-02-17 Vaclav Haisman <V dot Haisman at sh dot cvut dot cz>
>>
>> * include/winioctl.h (FSCTL_SET_SPARSE): Define.
>>
>> 2003-02-18 Vaclav Haisman <V dot Haisman at sh dot cvut dot cz>
>>
>> * wincap.h (wincaps::supports_sparse_files): New flag.
>> (wincapc::supports_sparse_files): New method.
>> * wincap.cc (wincap_unknown): Define value for the new flag.
>> (wincap_95): Ditto.
>> (wincap_95osr2): Ditto.
>> (wincap_98): Ditto.
>> (wincap_98se): Ditto.
>> (wincap_me): Ditto.
>> (wincap_nt3): Ditto.
>> (wincap_nt4): Ditto.
>> (wincap_nt4sp4): Ditto.
>> (wincap_2000): Ditto.
>> (wincap_xp): Ditto.
>> * path.h (path_conv::fs_flags): New method.
>> * fhandler_disk_file.cc: Include winioctl.h for DeviceIoControl.
>> (fhandler_disk_file::open): Set newly created and truncated files as
>> sparse on platforms that support it.
>
>I've applied that patch now. If anybody still has problems with it,
>please feel free to post a *testcase* which shows the problem.
Um. I was still hoping for benchmarks indicating that there was no performance
hit from this patch. Also, this patch introduces a change to wincap which is
never used. We don't need to change wincap.
cgf
cgf