Ronald Oussoren wrote:
> Adding the F_FULLSYNC option to os.fsync would be fine though

To show you that i'm not unteachable i'll attach a patch which
does that.
This approach can be heavily extended, then, e.g. by using
sync_file_range(all_the_flags) on Linux if the "full_fsync"
argument is true?!  (And then there is sync_file_range2() on
PowerPC and nice ARM...)

(The first time that i use PyArg_xy plus plus - please review.
test_os is ok and using "os.fsync(xy, True)" makes test_zlib
succeed on unpatched hg checkout.
os.rst change is really ugly.)