linux-kernel - Re: [PATCH 18/16] implement posix O_SYNC and O

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Message-ID: <20090910204026.GA20797@lst.de>
Date:	Thu, 10 Sep 2009 22:40:26 +0200
From:	Christoph Hellwig <hch@....de>
To:	Trond Myklebust <trond.myklebust@....uio.no>
Cc:	Christoph Hellwig <hch@....de>, Jan Kara <jack@...e.cz>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	akpm@...ux-foundation.org, drepper@...hat.com,
	viro@...iv.linux.org.uk, kyle@...artin.ca
Subject: Re: [PATCH 18/16] implement posix O_SYNC and O_DSYNC semantics

On Thu, Sep 10, 2009 at 04:38:40PM -0400, Trond Myklebust wrote:
> >  	return vfs_fsync_range(file, file->f_path.dentry, pos,
> > -			       pos + count - 1, 1);
> > +			       pos + count - 1,
> > +			       (file->f_flags & O_SYNC) ? 1 : 0);
> >  }
> >  EXPORT_SYMBOL(generic_write_sync);
> >  
> Shouldn't this be testing for
> 
>    file->f_flags & __O_SYNC
> 
> ?

Doesn't matter, we check early in the open path that __O_SYNC is only
set together with O_SYNC.
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