From: Matthew Wilcox <willy@infradead.org>
To: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
akpm@linux-foundation.org, vishal.moola@oracle.com,
muchun.song@linux.dev, david@redhat.com, osalvador@suse.de
Subject: Re: [PATCH] mm/hugetlb: mm/memory_hotplug: use a folio in scan_movable_pages()
Date: Tue, 28 May 2024 23:47:56 +0100 [thread overview]
Message-ID: <ZlZfHNkWHxtpcXhO@casper.infradead.org> (raw)
In-Reply-To: <20240528220321.144535-1-sidhartha.kumar@oracle.com>
On Tue, May 28, 2024 at 03:03:21PM -0700, Sidhartha Kumar wrote:
> @@ -1761,9 +1762,9 @@ static int scan_movable_pages(unsigned long start, unsigned long end,
> * cases false positives and negatives are possible. Calling
> * code must deal with these scenarios.
> */
> - if (HPageMigratable(head))
> + if (folio_test_hugetlb_migratable(folio))
> goto found;
> - skip = compound_nr(head) - (pfn - page_to_pfn(head));
> + skip = folio_nr_pages(folio) - folio_page_idx(folio, page);
> pfn += skip - 1;
Isn't this an unnecessarily complicated way of writing:
pfn |= folio_nr_pages(folio) - 1;
?
next prev parent reply other threads:[~2024-05-28 22:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-28 22:03 Sidhartha Kumar
2024-05-28 22:47 ` Matthew Wilcox [this message]
2024-05-29 18:21 ` Sidhartha Kumar
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