[PATCH v2 2/3] xfs: add O_TMPFILE support

[Dave Chinner]

On Wed, Dec 18, 2013 at 08:22:40AM +0800, Zhi Yong Wu wrote:
> From: Zhi Yong Wu <wuzhy at linux.vnet.ibm.com>
> 
> Add two functions xfs_create_tmpfile() and xfs_vn_tmpfile()
> to support O_TMPFILE file creation.
> 
> In contrast to xfs_create(), xfs_create_tmpfile() has a different
> log reservation to the regular file creation because there is no
> directory modification, and doesn't check if an entry can be added
> to the directory, but the reservation quotas is required appropriately,
> and finally its inode is added to the unlinked list.
> 
> xfs_vn_tmpfile() add one O_TMPFILE method to VFS interface and directly
> invoke xfs_create_tmpfile().

There's minor stuff I could ask you to change, but I think this is
good enough for initial support of O_TMPFILE.

Reviewed-by: Dave Chinner <dchinner at redhat.com>

-- 
Dave Chinner
david at fromorbit.com