From: Oscar Salvador <osalvador@suse.de>
To: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
David Hildenbrand <david@redhat.com>,
Michal Hocko <mhocko@kernel.org>,
Muchun Song <songmuchun@bytedance.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v7 5/7] mm: Make alloc_contig_range handle free hugetlb pages
Date: Wed, 14 Apr 2021 06:54:23 +0200 [thread overview]
Message-ID: <YHZ1f11qlGP+J2hP@localhost.localdomain> (raw)
In-Reply-To: <338f73f5-cff6-61c1-5252-01d9b30be627@oracle.com>
On Tue, Apr 13, 2021 at 03:29:02PM -0700, Mike Kravetz wrote:
> > spin_lock_irq(hugetlb_lock)
> > 1) update_and_free_page
> > PageHuge() == F
> > __free_pages()
> > 2) enqueue_huge_page
> > SetPageHugeFreed()
> > spin_unlock(&hugetlb_lock)
>
> Very small nit, the above should be spin_unlock_irq(&hugetlb_lock)
Right, I missed it somehow.
> > + /*
> > + * The page might have been dissolved from under our feet, so make sure
> > + * to carefully check the state under the lock.
> > + * Return success when racing as if we dissolved the page ourselves.
> > + */
> > + spin_lock_irq(&hugetlb_lock);
> > + if (PageHuge(page)) {
> > + head = compound_head(page);
> > + h = page_hstate(head);
> > + } else {
> > + spin_unlock(&hugetlb_lock);
>
> Should be be spin_unlock_irq(&hugetlb_lock);
>
> Other than that, it looks good.
Yeah, I will amend it in the next version.
Thanks Mike!
--
Oscar Salvador
SUSE L3
next prev parent reply other threads:[~2021-04-14 4:54 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-13 10:47 [PATCH v7 0/7] Make alloc_contig_range handle Hugetlb pages Oscar Salvador
2021-04-13 10:47 ` [PATCH v7 1/7] mm,page_alloc: Bail out earlier on -ENOMEM in alloc_contig_migrate_range Oscar Salvador
2021-04-13 17:00 ` Mike Kravetz
2021-04-13 10:47 ` [PATCH v7 2/7] mm,compaction: Let isolate_migratepages_{range,block} return error codes Oscar Salvador
2021-04-13 17:52 ` Mike Kravetz
2021-04-14 11:54 ` David Hildenbrand
2021-04-15 8:42 ` Oscar Salvador
2021-04-13 10:47 ` [PATCH v7 3/7] mm,hugetlb: Clear HPageFreed outside of the lock Oscar Salvador
2021-04-13 13:23 ` Michal Hocko
2021-04-13 21:19 ` Mike Kravetz
2021-04-14 6:04 ` Michal Hocko
2021-04-14 7:41 ` Oscar Salvador
2021-04-14 8:28 ` Michal Hocko
2021-04-14 10:01 ` Oscar Salvador
2021-04-14 10:03 ` Oscar Salvador
2021-04-14 10:32 ` Michal Hocko
2021-04-14 10:49 ` Oscar Salvador
2021-04-14 11:09 ` Michal Hocko
2021-04-14 12:02 ` David Hildenbrand
2021-04-14 16:45 ` Mike Kravetz
2021-04-13 10:47 ` [PATCH v7 4/7] mm,hugetlb: Split prep_new_huge_page functionality Oscar Salvador
2021-04-13 13:24 ` Michal Hocko
2021-04-13 13:26 ` Michal Hocko
2021-04-13 21:33 ` Mike Kravetz
2021-04-14 4:59 ` Oscar Salvador
2021-04-14 12:15 ` David Hildenbrand
2021-04-14 17:03 ` Mike Kravetz
2021-04-13 10:47 ` [PATCH v7 5/7] mm: Make alloc_contig_range handle free hugetlb pages Oscar Salvador
2021-04-13 13:40 ` Michal Hocko
2021-04-15 8:29 ` Oscar Salvador
2021-04-13 22:29 ` Mike Kravetz
2021-04-14 4:54 ` Oscar Salvador [this message]
2021-04-14 12:26 ` David Hildenbrand
2021-04-15 8:28 ` Oscar Salvador
2021-04-13 10:47 ` [PATCH v7 6/7] mm: Make alloc_contig_range handle in-use " Oscar Salvador
2021-04-13 22:48 ` Mike Kravetz
2021-04-14 4:52 ` Oscar Salvador
2021-04-14 17:07 ` Mike Kravetz
2021-04-13 10:47 ` [PATCH v7 7/7] mm,page_alloc: Drop unnecessary checks from pfn_range_valid_contig Oscar Salvador
2021-04-13 22:53 ` Mike Kravetz
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