linux-kernel - Re: [PATCH 01/13] vfs: add i

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Date:	Thu, 16 Aug 2012 12:10:16 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	NeilBrown <neilb@...e.de>
Cc:	"J. Bruce Fields" <bfields@...ldses.org>, viro@...IV.linux.org.uk,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	hch@...radead.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, apw@...onical.com, nbd@...nwrt.org,
	jordipujolp@...il.com, ezk@....cs.sunysb.edu, ricwheeler@...il.com,
	dhowells@...hat.com, hpj@...la.net, sedat.dilek@...glemail.com,
	penberg@...nel.org, goran.cetusic@...il.com, romain@...bokech.com
Subject: Re: [PATCH 01/13] vfs: add i_op->open()

NeilBrown <neilb@...e.de> writes:

> On Wed, 15 Aug 2012 13:21:50 -0400 "J. Bruce Fields" <bfields@...ldses.org>
> wrote:
>
>> On Wed, Aug 15, 2012 at 05:48:08PM +0200, Miklos Szeredi wrote:
>> > From: Miklos Szeredi <mszeredi@...e.cz>
>> > 
>> > Add a new inode operation i_op->open().  This is for stacked
>> 
>> Shouldn't that "->open()" be "->dentry_open()" ?
>> 
>> --b.
>> 
>> > filesystems that want to return a struct file from a different
>> > filesystem.
>> > 
>> > Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
>> > ---
>> >  Documentation/filesystems/Locking |    2 ++
>> >  Documentation/filesystems/vfs.txt |    7 +++++++
>> >  fs/namei.c                        |    9 ++++++---
>> >  fs/open.c                         |   23 +++++++++++++++++++++--
>> >  include/linux/fs.h                |    2 ++
>> >  5 files changed, 38 insertions(+), 5 deletions(-)
>> > 
>> > diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
>> > index 0f103e3..d222b6a 100644
>> > --- a/Documentation/filesystems/Locking
>> > +++ b/Documentation/filesystems/Locking
>> > @@ -64,6 +64,7 @@ prototypes:
>> >  	int (*atomic_open)(struct inode *, struct dentry *,
>> >  				struct file *, unsigned open_flag,
>> >  				umode_t create_mode, int *opened);
>> > +	int (*dentry_open)(struct dentry *, struct file *, const struct cred *);
>> >  
>> >  locking rules:
>> >  	all may block
>> > @@ -92,6 +93,7 @@ removexattr:	yes
>> >  fiemap:		no
>> >  update_time:	no
>> >  atomic_open:	yes
>> > +open:		no
>> >  
>
> and that last line should be
>     +dentry_open:       no
> ??

Yes.

Thanks,
Miklos
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