Re: [RFC PATCH v5 01/19] vfs: export new_inode_pseudo

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On Fri, Mar 26, 2021 at 01:32:09PM -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.
> 
> Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>

IIRC, this looked like a bug in ilookup5().  Did you come to the conclusion that
it's not actually a bug?

- Eric



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