@@ -397,18 +397,7 @@ int register_mem_sect_under_node(struct memory_block *mem_blk, int nid)
sect_end_pfn = section_nr_to_pfn(mem_blk->end_section_nr);
sect_end_pfn += PAGES_PER_SECTION - 1;
for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) {
- int page_nid, scn_nr;
-
- /*
- * memory block could have several absent sections from start.
- * skip pfn range from absent section
- */
- scn_nr = pfn_to_section_nr(pfn);
- if (!present_section_nr(scn_nr)) {
- pfn = round_down(pfn + PAGES_PER_SECTION,
- PAGES_PER_SECTION) - 1;
- continue;
- }
+ int page_nid;
/*
* memory block could have several absent sections from start.
@@ -454,22 +443,10 @@ int unregister_mem_sect_under_nodes(struct memory_block *mem_blk,
return -ENOMEM;
nodes_clear(*unlinked_nodes);
- sect_start_pfn = section_nr_to_pfn(mem_blk->start_section_nr);
- sect_end_pfn = section_nr_to_pfn(mem_blk->end_section_nr);
- sect_end_pfn += PAGES_PER_SECTION - 1;
+ sect_start_pfn = section_nr_to_pfn(phys_index);
+ sect_end_pfn = sect_start_pfn + PAGES_PER_SECTION - 1;
for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) {
- int nid, scn_nr;
-
- /*
- * memory block could have several absent sections from start.
- * skip pfn range from absent section
- */
- scn_nr = pfn_to_section_nr(pfn);
- if (!present_section_nr(scn_nr)) {
- pfn = round_down(pfn + PAGES_PER_SECTION,
- PAGES_PER_SECTION) - 1;
- continue;
- }
+ int nid;
nid = get_nid_for_pfn(pfn);
if (nid < 0)
This is a note to let you know that I have just added a patch titled Revert "mm: Check if section present during memory block (un)registering" to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue This patch is scheduled to be released in version 3.16.7-ckt21. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.16.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 497e04078b7394820b093e4ee540472685d40da6 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Date: Tue, 13 Oct 2015 10:57:25 -0700 Subject: Revert "mm: Check if section present during memory block (un)registering" commit 8346aa765e14348b7b436825b3c4740895a2fe1a upstream. This reverts commit 7568fb63f57ac8672f8bf2018171255441238882 as it's already in Linus's tree through a different patch. Reported-by: Tony Luck <tony.luck@intel.com> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/base/node.c | 31 ++++--------------------------- 1 file changed, 4 insertions(+), 27 deletions(-)