Re: [PATCH 21/25] gfs2: use i_op->atomic_create()

From: Christoph Hellwig
Date: Sat Mar 24 2012 - 10:27:51 EST


On Wed, Mar 07, 2012 at 10:22:38PM +0100, Miklos Szeredi wrote:
> From: Miklos Szeredi <mszeredi@xxxxxxx>
>
> GFS2 doesn't open the file in ->create, but it does check the LOOKUP_EXCL flag
> in it's create function. Convert to using ->atomic_create and checking O_EXCL
> so that the nameidata argument is no longer necessary.

It seems odd that we require implementing ->atomic_create even if we
don't actually do an atomic create but just want to look at the flags.

In fact I wonder if we really need to bother with having ->atomic_create
and ->create, or if we should have one method (kinda contra my previous
stance that ->atomic_open and ->atomic_create should be one).

This method then could or could not return a file pointer, but it would
always be the entry point for creates.

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