Re: [PATCH v2 7/7] mm/migrate: remove result argument on pageallocation function for migration

[Christoph Lameter]

On Wed, 11 Dec 2013, Joonsoo Kim wrote:

> In do_move_pages(), if error occurs, 'goto out_pm' is executed and the
> page status doesn't back to userspace. So we don't need to store err number.

If a page cannot be moved then the error code is containing the number of
pages that could not be migrated. The check there is for err < 0.
So a positive number is not an error.

migrate_pages only returns an error code if we are running out of memory.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/