Re: [PATCH v2 2/3] jbd2: introduce jbd2_inode dirty range scoping

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On Thu, Jun 20, 2019 at 3:25 PM Theodore Ts'o <tytso@xxxxxxx> wrote:
> On Thu, Jun 20, 2019 at 09:18:38AM -0600, Ross Zwisler wrote:
> > diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
> > index 5c04181b7c6d8..0e0393e7f41a4 100644
> > --- a/include/linux/jbd2.h
> > +++ b/include/linux/jbd2.h
> > @@ -1397,6 +1413,12 @@ extern int        jbd2_journal_force_commit(journal_t *);
> >  extern int      jbd2_journal_force_commit_nested(journal_t *);
> >  extern int      jbd2_journal_inode_add_write(handle_t *handle, struct jbd2_inode *inode);
> >  extern int      jbd2_journal_inode_add_wait(handle_t *handle, struct jbd2_inode *inode);
> > +extern int      jbd2_journal_inode_ranged_write(handle_t *handle,
> > +                     struct jbd2_inode *inode, loff_t start_byte,
> > +                     loff_t length);
> > +extern int      jbd2_journal_inode_ranged_wait(handle_t *handle,
> > +                     struct jbd2_inode *inode, loff_t start_byte,
> > +                     loff_t length);
> >  extern int      jbd2_journal_begin_ordered_truncate(journal_t *journal,
> >                               struct jbd2_inode *inode, loff_t new_size);
> >  extern void     jbd2_journal_init_jbd_inode(struct jbd2_inode *jinode, struct inode *inode);
>
> You're adding two new functions that are called from outside the jbd2
> subsystem.  To support compiling jbd2 as a module, we also need to add
> EXPORT_SYMBOL declarations for these two functions.
>
> I'll take care of this when applying this change.

Ah, yep, great catch.  Thanks!



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