From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiexun Wang <wangjiexun@tinylab.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Sergey Senozhatsky <senozhatsky@chromium.org>
Subject: [PATCH] mm/madvise: don't forget to leave lazy MMU mode in madvise_cold_or_pageout_pte_range()
Date: Fri, 26 Jan 2024 12:25:48 +0900 [thread overview]
Message-ID: <20240126032608.355899-1-senozhatsky@chromium.org> (raw)
In-Reply-To: <20230921174101.8e6271422a857af5414ce0a0@linux-foundation.org>
We need to leave lazy MMU mode before unlocking.
Fixes: b2f557a21bc8 ("mm/madvise: add cond_resched() in madvise_cold_or_pageout_pte_range()")
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
---
mm/madvise.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/madvise.c b/mm/madvise.c
index 0f222d464254..127f0c7b69ac 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -451,6 +451,7 @@ static int madvise_cold_or_pageout_pte_range(pmd_t *pmd,
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;
--
2.43.0.429.g432eaa2c6b-goog
next prev parent reply other threads:[~2024-01-26 3:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-21 12:02 [PATCH v2 0/1] mm/madvise: add cond_resched() " Jiexun Wang
[not found] ` <85363861af65fac66c7a98c251906afc0d9c8098.1695291046.git.wangjiexun@tinylab.org>
2023-09-22 0:41 ` [PATCH v2 1/1] " Andrew Morton
2024-01-26 3:12 ` Sergey Senozhatsky
2024-01-26 3:25 ` Sergey Senozhatsky [this message]
2024-01-26 6:53 ` [PATCH] mm/madvise: don't forget to leave lazy MMU mode " Andrew Morton
2024-01-26 7:00 ` Sergey Senozhatsky
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