From: Sergey Senozhatsky <senozhatsky@chromium.org>
Date: Fri, 26 Jan 2024 03:25:48 +0000 (+0900)
Subject: mm/madvise: don't forget to leave lazy MMU mode in madvise_cold_or_pageout_pte_range()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4c2da3188b848d33c26d7f0f8b14f3150331c923;p=linux.git

mm/madvise: don't forget to leave lazy MMU mode in madvise_cold_or_pageout_pte_range()

We need to leave lazy MMU mode before unlocking.

Link: https://lkml.kernel.org/r/20240126032608.355899-1-senozhatsky@chromium.org
Fixes: b2f557a21bc8 ("mm/madvise: add cond_resched() in madvise_cold_or_pageout_pte_range()")
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Jiexun Wang <wangjiexun@tinylab.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/madvise.c b/mm/madvise.c
index 912155a94ed58..cfa5e72882611 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -429,6 +429,7 @@ restart:
 		if (++batch_count == SWAP_CLUSTER_MAX) {
 			batch_count = 0;
 			if (need_resched()) {
+				arch_leave_lazy_mmu_mode();
 				pte_unmap_unlock(start_pte, ptl);
 				cond_resched();
 				goto restart;