On Thu, 26 Apr 2001, Linus Torvalds wrote:
>
>
> On Thu, 26 Apr 2001, Alexander Viro wrote:
> > On Thu, 26 Apr 2001, Andrea Arcangeli wrote:
> > >
> > > how can the read in progress see a branch that we didn't spliced yet? We
> >
> > fd = open("/dev/hda1", O_RDONLY);
> > read(fd, buf, sizeof(buf));
>
> Note that I think all these arguments are fairly bogus. Doing things like
> "dump" on a live filesystem is stupid and dangerous (in my opinion it is
> stupid and dangerous to use "dump" at _all_, but that's a whole 'nother
> discussion in itself), and there really are no valid uses for opening a
> block device that is already mounted. More importantly, I don't think
> anybody actually does.
Actually I did. I might do it again :) The point was to get the kernel to
cache certain blocks in the RAM.
Vladimir Dergachev
>
> The fact that you _can_ do so makes the patch valid, and I do agree with
> Al on the "least surprise" issue. I've already applied the patch, in fact.
> But the fact is that nobody should ever do the thing that could cause
> problems.
>
> Linus
>
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This archive was generated by hypermail 2b29 : Mon May 07 2001 - 21:00:15 EST