diff options
| -rw-r--r-- | drivers/base/node.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/base/node.c b/drivers/base/node.c index 560751bad294..ae98ebaf6313 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -390,7 +390,18 @@ 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; + 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; + } /* * memory block could have several absent sections from start. @@ -436,10 +447,22 @@ int unregister_mem_sect_under_nodes(struct memory_block *mem_blk, return -ENOMEM; nodes_clear(*unlinked_nodes); - sect_start_pfn = section_nr_to_pfn(phys_index); - sect_end_pfn = sect_start_pfn + PAGES_PER_SECTION - 1; + 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; for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) { - int nid; + 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; + } nid = get_nid_for_pfn(pfn); if (nid < 0) |