On Tue, Feb 06, 2007 at 08:28:33AM +1100, Nigel Cunningham wrote:
> Why do you think remounting filesystems is necessary? Are you getting
> problems with some particular filesystem?
>
> If I recall correctly, we briefly tried remounting filesystems in
> Suspend2, but it created problems with logging - some files open r/w
> were readonly afterwards.
Yes, that's the biggest problem with the forced remount r/o hack -
FMODE_WRITE is dropped from all files, and can't be recovered.
(and at the same time in progress writes or writes through shared
mmaps are totally ignored).
> We then tried bdev freezing with much better success.
Yes, that's the right thing to do if you want to be safe, but
we already had that discussion..
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