linux-kernel - Re: [PATCH 1/1] mm: move ->mremap() from file_operations to vm_operations

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Message-ID: <20150623182655.GA21392@redhat.com>
Date:	Tue, 23 Jun 2015 20:26:55 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	"Kirill A. Shutemov" <kirill@...temov.name>
Cc:	Andy Lutomirski <luto@...capital.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Benjamin LaHaise <bcrl@...ck.org>,
	Hugh Dickins <hughd@...gle.com>,
	Jeff Moyer <jmoyer@...hat.com>,
	Kirill Shutemov <kirill.shutemov@...ux.intel.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andy Lutomirski <luto@...nel.org>,
	Pavel Emelyanov <xemul@...allels.com>
Subject: Re: [PATCH 1/1] mm: move ->mremap() from file_operations to
	vm_operations_struct

On 06/23, Kirill A. Shutemov wrote:
>
> On Tue, Jun 23, 2015 at 08:02:51PM +0200, Oleg Nesterov wrote:
> > vma->vm_ops->mremap() looks more natural and clean in move_vma(),
> > and this way ->mremap() can have more users. Say, vdso.
> >
> > Signed-off-by: Oleg Nesterov <oleg@...hat.com>
> > ---
> >  fs/aio.c           |   25 ++++++++++++++++---------
> >  include/linux/fs.h |    1 -
> >  include/linux/mm.h |    1 +
> >  mm/mremap.c        |    4 ++--
>
> Please, update Documentation/filesystems/Locking.

OK, thanks, will do.

> > -static int aio_ring_remap(struct file *file, struct vm_area_struct *vma)
> > +static int aio_ring_remap(struct vm_area_struct *vma)
>
> I guess aio_ring_mremap() would be a better name.

Yes, agreed.

OK, I'll wait for other comments then send v2 with these changes.

Oleg.

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