Re: [RFC PATCH v3 01/16] vfs: export new_inode_pseudo

Al Viro
2020-09-23T03:41:38Z

On Mon, Sep 14, 2020 at 03:16:52PM -0400, Jeff Layton wrote:
> Ceph needs to be able to allocate inodes ahead of a create that might
> involve a fscrypt-encrypted inode. new_inode() almost fits the bill,
> but it puts the inode on the sb->s_inodes list and when we go to hash
> it, that might be done again.
>
> We could work around that by setting I_CREATING on the new inode, but
> that causes ilookup5 to return -ESTALE if something tries to find it
> before I_NEW is cleared. To work around all of this, just use
> new_inode_pseudo which doesn't add it to the list.

Er... Why would you _not_ want -ESTALE in that situation?