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mm/madvise: don't forget to leave lazy MMU mode in madvise_cold_or_pageout_pte_range()
author
Sergey Senozhatsky
<senozhatsky@chromium.org>
Fri, 26 Jan 2024 03:25:48 +0000
(12:25 +0900)
committer
Andrew Morton
<akpm@linux-foundation.org>
Thu, 8 Feb 2024 05:20:35 +0000
(21:20 -0800)
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>
mm/madvise.c
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diff --git
a/mm/madvise.c
b/mm/madvise.c
index 912155a94ed5871c1805f33ec624c7c7c1ee28c8..cfa5e7288261189cb8242e5a0367fe6ffeebca12 100644
(file)
--- 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;