[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <7c563924-47ea-42d1-82dc-3597151998a3@redhat.com>
Date: Mon, 30 Sep 2024 10:45:27 +0200
From: David Hildenbrand <david@...hat.com>
To: Dev Jain <dev.jain@....com>, akpm@...ux-foundation.org,
willy@...radead.org, kirill.shutemov@...ux.intel.com
Cc: ryan.roberts@....com, anshuman.khandual@....com, catalin.marinas@....com,
cl@...two.org, vbabka@...e.cz, mhocko@...e.com, apopple@...dia.com,
dave.hansen@...ux.intel.com, will@...nel.org, baohua@...nel.org,
jack@...e.cz, mark.rutland@....com, hughd@...gle.com,
aneesh.kumar@...nel.org, yang@...amperecomputing.com, peterx@...hat.com,
ioworker0@...il.com, jglisse@...gle.com, wangkefeng.wang@...wei.com,
ziy@...dia.com, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v6 1/2] mm: Abstract THP allocation
On 30.09.24 07:28, Dev Jain wrote:
> In preparation for the second patch, abstract away the THP allocation
> logic present in the create_huge_pmd() path, which corresponds to the
> faulting case when no page is present.
>
> There should be no functional change as a result of applying this patch,
> except that, as David notes at [1], a PMD-aligned address should
> be passed to update_mmu_cache_pmd().
>
> [1]: https://lore.kernel.org/all/ddd3fcd2-48b3-4170-bcaa-2fe66e093f43@redhat.com/
>
> Acked-by: David Hildenbrand <david@...hat.com>
> Reviewed-by: Kefeng Wang <wangkefeng.wang@...wei.com>
> Signed-off-by: Dev Jain <dev.jain@....com>
> ---
> mm/huge_memory.c | 98 ++++++++++++++++++++++++++++--------------------
> 1 file changed, 57 insertions(+), 41 deletions(-)
>
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 4e34b7f89daf..e3bcdbc9baa2 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -1148,47 +1148,81 @@ unsigned long thp_get_unmapped_area(struct file *filp, unsigned long addr,
> }
> EXPORT_SYMBOL_GPL(thp_get_unmapped_area);
>
> -static vm_fault_t __do_huge_pmd_anonymous_page(struct vm_fault *vmf,
> - struct page *page, gfp_t gfp)
> +static struct folio *vma_alloc_anon_folio_pmd(struct vm_area_struct *vma,
> + unsigned long addr)
Just a nit as I am skimming over this once more:
We try to make any new code / code we touch to use a 2-tab
indentation for the second parameter line.
E.g.,
static struct folio *vma_alloc_anon_folio_pmd(struct vm_area_struct *vma,
unsigned long addr)
{
--
Cheers,
David / dhildenb
Powered by blists - more mailing lists