Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes:
> I started out wanting to check the stat information as much as possible,
> but realistically, nobody probably really cares. We already effectively
> removed st_dev checking and nsec checks.
Was ignoring st_dev checking primarily for a work tree over NFS? I think
ignoring it makes sense. If st_dev changes, it is likely that somebody
did a "mv" of a whole repository to some other filesystem, or the
filesystem is not giving stable st_dev to us for the whole tree---it is
not like we want to detect a change to a single path that changes its
st_dev and nothing else, as no such change is likely to be useful.
> IOW, maybe we should just do this, and remove over a hundred lines of dead
> code or commentary/config. And never have to worry about these kinds of
> issues with different environments again.
I like the end result.
But I am not sure about dropping the nanosecond resolution timestamps.
The area was extended recently in preparation for ext4; we can take
advantage of it to reduce the chance the racy-git avoidance codepath
triggers if we keep it.
fba2f38 (make USE_NSEC work as expected, 2009-02-19)
c06ff49 (Record ns-timestamps if possible, but do not use it without
USE_NSEC, 2009-03-04)
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