From: Jason Gunthorpe <jgg@nvidia.com>
To: peterx@redhat.com
Cc: linux-arm-kernel@lists.infradead.org, x86@kernel.org,
Muchun Song <muchun.song@linux.dev>,
linux-kernel@vger.kernel.org,
Matthew Wilcox <willy@infradead.org>,
linux-mm@kvack.org, sparclinux@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
linuxppc-dev@lists.ozlabs.org, Mike Rapoport <rppt@kernel.org>
Subject: Re: [PATCH RFC 10/13] mm/gup: Merge pXd huge mapping checks
Date: Thu, 7 Mar 2024 16:19:46 -0400 [thread overview]
Message-ID: <20240307201946.GG9179@nvidia.com> (raw)
In-Reply-To: <20240306104147.193052-11-peterx@redhat.com>
On Wed, Mar 06, 2024 at 06:41:44PM +0800, peterx@redhat.com wrote:
> From: Peter Xu <peterx@redhat.com>
>
> Huge mapping checks in GUP are slightly redundant and can be simplified.
>
> pXd_huge() now is the same as pXd_leaf(). pmd_trans_huge() and
> pXd_devmap() should both imply pXd_leaf(). Time to merge them into one.
>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
> mm/gup.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
Much better!
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Jason
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@nvidia.com>
To: peterx@redhat.com
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org,
Andrew Morton <akpm@linux-foundation.org>,
Muchun Song <muchun.song@linux.dev>,
Matthew Wilcox <willy@infradead.org>,
Mike Rapoport <rppt@kernel.org>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
x86@kernel.org, sparclinux@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH RFC 10/13] mm/gup: Merge pXd huge mapping checks
Date: Thu, 7 Mar 2024 16:19:46 -0400 [thread overview]
Message-ID: <20240307201946.GG9179@nvidia.com> (raw)
In-Reply-To: <20240306104147.193052-11-peterx@redhat.com>
On Wed, Mar 06, 2024 at 06:41:44PM +0800, peterx@redhat.com wrote:
> From: Peter Xu <peterx@redhat.com>
>
> Huge mapping checks in GUP are slightly redundant and can be simplified.
>
> pXd_huge() now is the same as pXd_leaf(). pmd_trans_huge() and
> pXd_devmap() should both imply pXd_leaf(). Time to merge them into one.
>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
> mm/gup.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
Much better!
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Jason
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@nvidia.com>
To: peterx@redhat.com
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org,
Andrew Morton <akpm@linux-foundation.org>,
Muchun Song <muchun.song@linux.dev>,
Matthew Wilcox <willy@infradead.org>,
Mike Rapoport <rppt@kernel.org>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
x86@kernel.org, sparclinux@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH RFC 10/13] mm/gup: Merge pXd huge mapping checks
Date: Thu, 7 Mar 2024 16:19:46 -0400 [thread overview]
Message-ID: <20240307201946.GG9179@nvidia.com> (raw)
In-Reply-To: <20240306104147.193052-11-peterx@redhat.com>
On Wed, Mar 06, 2024 at 06:41:44PM +0800, peterx@redhat.com wrote:
> From: Peter Xu <peterx@redhat.com>
>
> Huge mapping checks in GUP are slightly redundant and can be simplified.
>
> pXd_huge() now is the same as pXd_leaf(). pmd_trans_huge() and
> pXd_devmap() should both imply pXd_leaf(). Time to merge them into one.
>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
> mm/gup.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
Much better!
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Jason
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next prev parent reply other threads:[~2024-03-07 20:20 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-06 10:41 [PATCH RFC 00/13] mm/treewide: Remove pXd_huge() API peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` [PATCH RFC 01/13] mm/hmm: Process pud swap entry without pud_huge() peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-07 18:12 ` Jason Gunthorpe
2024-03-07 18:12 ` Jason Gunthorpe
2024-03-07 18:12 ` Jason Gunthorpe
2024-03-08 6:50 ` Peter Xu
2024-03-08 6:50 ` Peter Xu
2024-03-08 6:50 ` Peter Xu
2024-03-06 10:41 ` [PATCH RFC 02/13] mm/gup: Cache p4d in follow_p4d_mask() peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` [PATCH RFC 03/13] mm/gup: Check p4d presence before going on peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-07 20:08 ` Jason Gunthorpe
2024-03-07 20:08 ` Jason Gunthorpe
2024-03-07 20:08 ` Jason Gunthorpe
2024-03-06 10:41 ` [PATCH RFC 04/13] mm/x86: Change pXd_huge() behavior to exclude swap entries peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-07 20:16 ` Jason Gunthorpe
2024-03-07 20:16 ` Jason Gunthorpe
2024-03-07 20:16 ` Jason Gunthorpe
2024-03-06 10:41 ` [PATCH RFC 05/13] mm/sparc: " peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` [PATCH RFC 06/13] mm/arm: Use macros to define pmd/pud helpers peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` [PATCH RFC 07/13] mm/arm: Redefine pmd_huge() with pmd_leaf() peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` [PATCH RFC 08/13] mm/arm64: Merge pXd_huge() and pXd_leaf() definitions peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` [PATCH RFC 09/13] mm/powerpc: Redefine pXd_huge() with pXd_leaf() peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-06 12:56 ` Michael Ellerman
2024-03-06 12:56 ` Michael Ellerman
2024-03-06 12:56 ` Michael Ellerman
2024-03-07 3:05 ` Peter Xu
2024-03-07 3:05 ` Peter Xu
2024-03-07 3:05 ` Peter Xu
2024-03-06 10:41 ` [PATCH RFC 10/13] mm/gup: Merge pXd huge mapping checks peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-07 20:19 ` Jason Gunthorpe [this message]
2024-03-07 20:19 ` Jason Gunthorpe
2024-03-07 20:19 ` Jason Gunthorpe
2024-03-06 10:41 ` [PATCH RFC 11/13] mm/treewide: Replace pXd_huge() with pXd_leaf() peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` [PATCH RFC 12/13] mm/treewide: Remove pXd_huge() peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` [PATCH RFC 13/13] mm: Document pXd_leaf() API peterx
2024-03-06 10:41 ` peterx
2024-03-06 10:41 ` peterx
2024-03-08 15:20 ` Jason Gunthorpe
2024-03-08 15:20 ` Jason Gunthorpe
2024-03-08 15:20 ` Jason Gunthorpe
2024-03-11 9:58 ` [PATCH RFC 00/13] mm/treewide: Remove pXd_huge() API Christophe Leroy
2024-03-11 9:58 ` Christophe Leroy
2024-03-11 9:58 ` Christophe Leroy
2024-03-12 20:01 ` Peter Xu
2024-03-12 20:01 ` Peter Xu
2024-03-12 20:01 ` Peter Xu
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