From: "Huang\, Ying" <ying.huang@intel.com>
To: Andrea Righi <andrea.righi@canonical.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Minchan Kim <minchan@kernel.org>,
Anchal Agarwal <anchalag@amazon.com>, <linux-mm@kvack.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] mm: swap: use fixed-size readahead during swapoff
Date: Wed, 15 Apr 2020 15:44:08 +0800 [thread overview]
Message-ID: <87imi1yz07.fsf@yhuang-dev.intel.com> (raw)
In-Reply-To: <20200415073239.GG810380@xps-13> (Andrea Righi's message of "Wed, 15 Apr 2020 09:32:39 +0200")
Andrea Righi <andrea.righi@canonical.com> writes:
> mm/swapfile.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/mm/swapfile.c b/mm/swapfile.c
> index 9fd47e6f7a86..cb9eb517178d 100644
> --- a/mm/swapfile.c
> +++ b/mm/swapfile.c
> @@ -1944,7 +1944,9 @@ static int unuse_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
> vmf.pmd = pmd;
> last_ra = atomic_read(&last_readahead_pages);
> atomic_set(&swapin_readahead_hits, last_ra);
You need to remove the above 2 lines firstly.
Best Regards,
Huang, Ying
> - page = swapin_readahead(entry, GFP_HIGHUSER_MOVABLE, &vmf);
> + page = lookup_swap_cache(entry, vma, addr);
> + if (!page)
> + page = swapin_readahead(entry, GFP_HIGHUSER_MOVABLE, &vmf);
> if (!page) {
> if (*swap_map == 0 || *swap_map == SWAP_MAP_BAD)
> goto try_next;
>
> Thanks!
> -Andrea
next prev parent reply other threads:[~2020-04-15 7:44 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-13 11:18 [PATCH v2] mm: swap: use fixed-size readahead during swapoff Andrea Righi
2020-04-13 13:00 ` Huang, Ying
2020-04-13 13:31 ` Andrea Righi
2020-04-14 1:31 ` Huang, Ying
2020-04-14 13:05 ` Andrea Righi
2020-04-15 2:37 ` Huang, Ying
2020-04-15 7:32 ` Andrea Righi
2020-04-15 7:44 ` Huang, Ying [this message]
2020-04-15 9:19 ` Andrea Righi
2020-04-16 0:44 ` Huang, Ying
2020-04-15 12:00 ` Andrea Righi
2020-04-16 0:41 ` Huang, Ying
2020-04-16 17:21 ` Andrea Righi
2020-04-13 13:13 ` Huang, Ying
2020-04-13 13:26 ` Andrea Righi
2020-04-14 1:45 ` Huang, Ying
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