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-rw-r--r--mm/hugetlb.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index efd78527ad1e..8fb86ba452b0 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -403,14 +403,14 @@ static void try_to_free_low(unsigned long count)
403 for (i = 0; i < MAX_NUMNODES; ++i) { 403 for (i = 0; i < MAX_NUMNODES; ++i) {
404 struct page *page, *next; 404 struct page *page, *next;
405 list_for_each_entry_safe(page, next, &hugepage_freelists[i], lru) { 405 list_for_each_entry_safe(page, next, &hugepage_freelists[i], lru) {
406 if (count >= nr_huge_pages)
407 return;
406 if (PageHighMem(page)) 408 if (PageHighMem(page))
407 continue; 409 continue;
408 list_del(&page->lru); 410 list_del(&page->lru);
409 update_and_free_page(page); 411 update_and_free_page(page);
410 free_huge_pages--; 412 free_huge_pages--;
411 free_huge_pages_node[page_to_nid(page)]--; 413 free_huge_pages_node[page_to_nid(page)]--;
412 if (count >= nr_huge_pages)
413 return;
414 } 414 }
415 } 415 }
416} 416}
@@ -450,8 +450,6 @@ static unsigned long set_max_huge_pages(unsigned long count)
450 goto out; 450 goto out;
451 451
452 } 452 }
453 if (count >= persistent_huge_pages)
454 goto out;
455 453
456 /* 454 /*
457 * Decrease the pool size 455 * Decrease the pool size
@@ -460,7 +458,8 @@ static unsigned long set_max_huge_pages(unsigned long count)
460 * pages into surplus state as needed so the pool will shrink 458 * pages into surplus state as needed so the pool will shrink
461 * to the desired size as pages become free. 459 * to the desired size as pages become free.
462 */ 460 */
463 min_count = max(count, resv_huge_pages); 461 min_count = resv_huge_pages + nr_huge_pages - free_huge_pages;
462 min_count = max(count, min_count);
464 try_to_free_low(min_count); 463 try_to_free_low(min_count);
465 while (min_count < persistent_huge_pages) { 464 while (min_count < persistent_huge_pages) {
466 struct page *page = dequeue_huge_page(NULL, 0); 465 struct page *page = dequeue_huge_page(NULL, 0);