Hello
On Thursday 11 January 2007 04:00, Nick Piggin wrote:
> Vladimir V. Saveliev wrote:
> > Hello
> >
> > On Tuesday 09 January 2007 21:30, Linus Torvalds wrote:
> >
> >>On Tue, 9 Jan 2007, Malte Schröder wrote:
> >>
> >>>>So something interesting is definitely going on, but I don't know exactly
> >>>>what it is. Why does reiserfs do the truncate as part of a close, if the
> >>>>same inode is actually mapped somewhere else?
> >
> >
> > on file close reiserfs tries to "pack" content of last incomplete page of file into metadata blocks.
> > It should not if that page is still mapped somewhere.
> > It does not actually truncate, it calls the same function which does truncate, but file size does not change.
>
> That's racy, unfortunately :P
>
Sorry, please, explain what is racy.
reiserfs_truncate and reiserfs_release call that function after they have inode's mutex locked.
> >
> > Please consider the below patch.
>
> That seems like it would work. Probably papers over your truncate-inside-i_size as well.
>
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