Ulrich Drepper wrote:
> int posix_fallocate (int fd, off_t offset, size_t len)
>
> The purpose of the function is to allocate enough storage so that
> future writes to the file in the range [offset,offset+len] cannot fail
> because the storage device has no room.
>
> I'm currently emulating this function in a ugly way in glibc: I write
> to every single block on the file. But this is by far not the best
> way. This function belongs into the kernel.
You could try using sendfile from /dev/zero -- that gives the kernel or
fs a chance to optimise that path in future.
-- Jamie
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This archive was generated by hypermail 2b29 : Sat Apr 15 2000 - 21:00:24 EST