From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Vasily Averin <vasily.averin@linux.dev>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>,
Minchan Kim <minchan@kernel.org>,
linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
zhouxianrong <zhouxianrong@huawei.com>
Subject: Re: [PATCH] zram: extra zram_get_element call in zram_read_from_zspool()
Date: Wed, 8 Nov 2023 11:49:24 +0900 [thread overview]
Message-ID: <20231108024924.GG11577@google.com> (raw)
In-Reply-To: <ec494d90-3f04-4ab4-870b-bb4f015eb0ed@linux.dev>
On (23/11/06 22:55), Vasily Averin wrote:
>
> 'element' and 'handle' are union in struct zram_table_entry.
>
> Fixes: 8e19d540d107 ("zram: extend zero pages to same element pages")
Sorry, what exactly does it fix?
[..]
> @@ -1318,12 +1318,10 @@ static int zram_read_from_zspool(struct zram *zram, struct page *page,
>
> handle = zram_get_handle(zram, index);
> if (!handle || zram_test_flag(zram, index, ZRAM_SAME)) {
> - unsigned long value;
> void *mem;
>
> - value = handle ? zram_get_element(zram, index) : 0;
> mem = kmap_atomic(page);
> - zram_fill_page(mem, PAGE_SIZE, value);
> + zram_fill_page(mem, PAGE_SIZE, handle);
> kunmap_atomic(mem);
> return 0;
> }
next prev parent reply other threads:[~2023-11-08 2:49 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-06 19:55 [PATCH] zram: extra zram_get_element call in zram_read_from_zspool() Vasily Averin
2023-11-06 20:03 ` Vasily Averin
2023-11-08 2:48 ` Sergey Senozhatsky
2023-11-08 2:49 ` Sergey Senozhatsky [this message]
2023-11-08 3:16 ` Vasily Averin
2023-11-08 3:32 ` Sergey Senozhatsky
2023-11-08 4:40 ` Vasily Averin
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