The patch titled Subject: mm: enhance comment and bug check has been added to the -mm tree. Its filename is mm-revert-0def08e3-mm-mempolicyc-check-return-code-of-check_range-fix.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Minchan Kim <minchan@xxxxxxxxxx> Subject: mm: enhance comment and bug check This patch updates comment and bug check. It can be fold into [1]. [1] mm-revert-0def08e3-mm-mempolicyc-check-return-code-of-check_range.patch Suggested-by: Johannes Weiner <hannes@xxxxxxxxxxx> Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx> Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx> Acked-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Cc: Mel Gorman <mgorman@xxxxxxx> Cc: Christoph Lameter <cl@xxxxxxxxx> Cc: David Rientjes <rientjes@xxxxxxxxxx> Cc: Vasiliy Kulikov <segooon@xxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/mempolicy.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff -puN mm/mempolicy.c~mm-revert-0def08e3-mm-mempolicyc-check-return-code-of-check_range-fix mm/mempolicy.c --- a/mm/mempolicy.c~mm-revert-0def08e3-mm-mempolicyc-check-return-code-of-check_range-fix +++ a/mm/mempolicy.c @@ -951,9 +951,11 @@ static int migrate_to_node(struct mm_str node_set(source, nmask); /* - * Collect migrate pages and it shoudn't be failed. + * This does not "check" the range but isolates all pages that + * need migration. Between passing in the full user address + * space range and MPOL_MF_DISCONTIG_OK, this call can not fail. */ - VM_BUG_ON(flags & MPOL_MF_STRICT); + VM_BUG_ON(!(flags & (MPOL_MF_MOVE | MPOL_MF_MOVE_ALL))); check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask, flags | MPOL_MF_DISCONTIG_OK, &pagelist); _ Patches currently in -mm which might be from minchan@xxxxxxxxxx are origin.patch linux-next.patch mm-remove-__gfp_no_kswapd.patch mm-fix-nonuniform-page-status-when-writing-new-file-with-small-buffer.patch mm-fix-nonuniform-page-status-when-writing-new-file-with-small-buffer-fix.patch mm-fix-nonuniform-page-status-when-writing-new-file-with-small-buffer-fix-fix.patch mm-compaction-update-comment-in-try_to_compact_pages.patch mm-vmscan-scale-number-of-pages-reclaimed-by-reclaim-compaction-based-on-failures.patch mm-vmscan-scale-number-of-pages-reclaimed-by-reclaim-compaction-based-on-failures-fix.patch mm-compaction-capture-a-suitable-high-order-page-immediately-when-it-is-made-available.patch mm-cma-discard-clean-pages-during-contiguous-allocation-instead-of-migration.patch mm-cma-discard-clean-pages-during-contiguous-allocation-instead-of-migration-fix.patch mm-cma-discard-clean-pages-during-contiguous-allocation-instead-of-migration-fix-fix.patch mm-fix-tracing-in-free_pcppages_bulk.patch mm-fix-tracing-in-free_pcppages_bulk-fix.patch cma-fix-counting-of-isolated-pages.patch cma-count-free-cma-pages.patch cma-count-free-cma-pages-fix.patch cma-fix-watermark-checking.patch mm-page_alloc-use-get_freepage_migratetype-instead-of-page_private.patch mm-remain-migratetype-in-freed-page.patch memory-hotplug-bug-fix-race-between-isolation-and-allocation.patch memory-hotplug-fix-pages-missed-by-race-rather-than-failing.patch memory-hotplug-fix-pages-missed-by-race-rather-than-failng-fix.patch swap-add-a-simple-detector-for-inappropriate-swapin-readahead.patch swap-add-a-simple-detector-for-inappropriate-swapin-readahead-fix.patch mm-memblock-reduce-overhead-in-binary-search.patch mm-memblock-use-existing-interface-to-set-nid.patch mm-memblock-cleanup-early_node_map-related-comments.patch mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long.patch mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix.patch mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix-2.patch mm-compaction-check-lock-contention-first-before-taking-lock.patch mm-page_alloc-refactor-out-__alloc_contig_migrate_alloc.patch mm-page_alloc-refactor-out-__alloc_contig_migrate_alloc-checkpatch-fixes.patch memory-hotplug-dont-replace-lowmem-pages-with-highmem.patch mm-compaction-move-fatal-signal-check-out-of-compact_checklock_irqsave.patch mm-enable-config_compaction-by-default.patch mm-numa-reclaim-from-all-nodes-within-reclaim-distance.patch mm-numa-reclaim-from-all-nodes-within-reclaim-distance-fix.patch mm-revert-0def08e3-mm-mempolicyc-check-return-code-of-check_range.patch mm-revert-0def08e3-mm-mempolicyc-check-return-code-of-check_range-fix.patch trace-events-kmem-dont-call-page_to_pfn-if-page-is-null.patch memory-hotplug-fix-zone-stat-mismatch.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html