Messages in this thread |  | | Date | Sun, 9 Sep 2001 09:24:51 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: linux-2.4.10-pre5 |
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On Sun, 9 Sep 2001, Andrea Arcangeli wrote: > > > filesystems. The only case it doesn't like is the "rw-open of a device > > that is rw-mounted". > > it also doesn't work for ro-open of a device that is rw-mounted, hdparm > -t as said a million of times now.
It _does_ work for that case, and you just aren't reading my emails.
You only need to invalidate the device if the open was a read-write open.
It would be _stupid_ to force a writeback and device invalidate for read-only opens, now wouldn't it?
The fact that you cannot know the difference between a read-only and a read-write open is _entirely_ due to the fact that you leave the flush until the last close. If you do it at every close (like I have said for the last twohundred mails or so), you can trivially see if the open was a read-only or not.
Linus
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