Messages in this thread | | | Date | Mon, 29 Jun 2015 09:50:48 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: [PATCH] mm: fix status code move_pages() returns for zero page |
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On Wed, 24 Jun 2015, Kirill A. Shutemov wrote:
> Man page for move_pages(2) specifies that status code for zero page is > supposed to be -EFAULT. Currently kernel return -ENOENT in this case. > > follow_page() can do it for us, if we would ask for FOLL_DUMP.
FOLL_DUMP also has the consequence that the upper layer page tables pages are no longer allocated.
Otherwise this looks ok.
Reviewed-by: Christoph Lameter <cl@linux.com>
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