Re: [PATCH 1/4] statx: Add a system call to make enhanced file info available

From: David Howells
Date: Fri Nov 18 2016 - 17:25:06 EST

Dave Chinner <david@xxxxxxxxxxxxx> wrote:

> > Definition: "Same as struct stat::st_blksize".
> So it is still defined as "mostly useless", then? :/

If we're going to be able to emulate stat() with this, then st_blksize must be
determinable from whatever's in struct statx. If you can provide something
better for stx_blksize and an algorithm for mapping that to st_blksize, then
please do so.

> The test suite should be developed concurrently with the code. You
> know, best software engineering practices and all that. Just a small
> example: Darrick landed 100+ reflink related tests in xfstests
> before we merged the XFS reflink functionality.

I can't give you tests to merge yet. Given the amount of bikeshedding that's
taken place on this, I'm glad I *haven't* done the testsuite yet - it would
have much more than doubled the amount of work. I *still* don't know what the
final form is going to be. I've chucked out almost everything extra because
every bit has someone who argues with it - and this includes people who argue
against things that have to be there!


warthog>ls xfstests-dev/doc

The documentation is missing. There's a bit in the top level README, but
there's a whole lot of information that *should* be there - and isn't.