On 2010-09-24, at 09:35, Lukas Czerner wrote:
> array[0] - (start) first Byte to trim
> array[1] - (len) number of Bytes to trim from start
> array[2] - (minlen) minimum extent length to trim, free extents shorter
>
> than this number of Bytes will be ignored. This number will be rounded
> up to the block size.
>
> It is also possible to specify NULL as an argument. In this case the
> arguments will set itself as follows:
>
> args[0] = 0;
> args[1] = ULLONG_MAX;
> args[2] = 0;
(minor) you use "array[]" in one place and "args[]" in another.
> +#define FITRIM _IOWR('X', 121, uint64_t) /* Trim */
This ioctl definition isn't strictly correct. The "size" parameter is actually uint64_t[3], though I'm not sure whether you need to define a structure in order to specify this.
Cheers, Andreas
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