| commit | d899844e9c98c9c74b4d9926fd3bd66a225f6978 | |
| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | |
| Fri, 4 Sep 2015 22:47:53 +0000 (4 15:47 -0700) | ||
| committer | Linus Torvalds <torvalds@linux-foundation.org> | |
| Fri, 4 Sep 2015 23:54:41 +0000 (4 16:54 -0700) | ||
| tree | f20414a3a4217e6befb38b5adeefdc2e6a4e8c00 | treesnapshot (tar.gz zip) |
| parent | ce9ce6659a5775047ad529ed77ab119da5fb8b0c | commitdiff |
mm: fix status code which move_pages() returns for zero page
The manpage 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. The use of
FOLL_DUMP also means that the upper layer page tables pages are no longer
allocated.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The manpage 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. The use of
FOLL_DUMP also means that the upper layer page tables pages are no longer
allocated.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| mm/migrate.c | diffblobblamehistory |