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From: John Hubbard <jhubbard@nvidia.com>
To: Calum Mackay <calum.mackay@oracle.com>, <john.hubbard@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: "Christoph Hellwig" <hch@infradead.org>,
	"Dan Williams" <dan.j.williams@intel.com>,
	"Dave Chinner" <david@fromorbit.com>,
	"Dave Hansen" <dave.hansen@linux.intel.com>,
	"Ira Weiny" <ira.weiny@intel.com>, "Jan Kara" <jack@suse.cz>,
	"Jason Gunthorpe" <jgg@ziepe.ca>,
	"Jérôme Glisse" <jglisse@redhat.com>,
	LKML <linux-kernel@vger.kernel.org>,
	amd-gfx@lists.freedesktop.org, ceph-devel@vger.kernel.org,
	devel@driverdev.osuosl.org, devel@lists.orangefs.org,
	dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
	kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-block@vger.kernel.org, linux-crypto@vger.kernel.org,
	linux-fbdev@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-media@vger.kernel.org, linux-mm@kvack.org,
	linux-nfs@vger.kernel.org, linux-rdma@vger.kernel.org,
	linux-rpi-kernel@lists.infradead.org, linux-xfs@vger.kernel.org,
	netdev@vger.kernel.org, rds-devel@oss.oracle.com,
	sparclinux@vger.kernel.org, x86@kernel.org,
	xen-devel@lists.xenproject.org,
	"Trond Myklebust" <trond.myklebust@hammerspace.com>,
	"Anna Schumaker" <anna.schumaker@netapp.com>
Subject: Re: [PATCH 31/34] nfs: convert put_page() to put_user_page*()
Date: Fri, 2 Aug 2019 18:41:38 -0700	[thread overview]
Message-ID: <db136399-ed87-56ea-bd6e-e5d29b145eda@nvidia.com> (raw)
In-Reply-To: <1738cb1e-15d8-0bbe-5362-341664f6efc8@oracle.com>

On 8/2/19 6:27 PM, Calum Mackay wrote:
> On 02/08/2019 3:20 am, john.hubbard@gmail.com wrote:
... 
> Since it's static, and only called twice, might it be better to change its two callers [nfs_direct_{read,write}_schedule_iovec()] to call put_user_pages() directly, and remove nfs_direct_release_pages() entirely?
> 
> thanks,
> calum.
> 
> 
>>     void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
>>
 
Hi Calum,

Absolutely! Is it OK to add your reviewed-by, with the following incremental
patch made to this one?

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index b00b89dda3c5..c0c1b9f2c069 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -276,11 +276,6 @@ ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
        return nfs_file_direct_write(iocb, iter);
 }
 
-static void nfs_direct_release_pages(struct page **pages, unsigned int npages)
-{
-       put_user_pages(pages, npages);
-}
-
 void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
                              struct nfs_direct_req *dreq)
 {
@@ -510,7 +505,7 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
                        pos += req_len;
                        dreq->bytes_left -= req_len;
                }
-               nfs_direct_release_pages(pagevec, npages);
+               put_user_pages(pagevec, npages);
                kvfree(pagevec);
                if (result < 0)
                        break;
@@ -933,7 +928,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
                        pos += req_len;
                        dreq->bytes_left -= req_len;
                }
-               nfs_direct_release_pages(pagevec, npages);
+               put_user_pages(pagevec, npages);
                kvfree(pagevec);
                if (result < 0)
                        break;



thanks,
-- 
John Hubbard
NVIDIA

  reply	other threads:[~2019-08-03  1:41 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-02  2:19 [PATCH 00/34] put_user_pages(): miscellaneous call sites john.hubbard
2019-08-02  2:19 ` [PATCH 01/34] mm/gup: add make_dirty arg to put_user_pages_dirty_lock() john.hubbard
2019-08-02  2:19 ` [PATCH 02/34] net/rds: convert put_page() to put_user_page*() john.hubbard
2019-08-02  2:19 ` [PATCH 03/34] net/ceph: " john.hubbard
2019-08-02 22:32   ` Jeff Layton
2019-08-02  2:19 ` [PATCH 04/34] x86/kvm: " john.hubbard
2019-08-02  2:19 ` [PATCH 05/34] drm/etnaviv: convert release_pages() to put_user_pages() john.hubbard
2019-08-02  2:19 ` [PATCH 06/34] drm/i915: convert put_page() to put_user_page*() john.hubbard
2019-08-02  9:19   ` Joonas Lahtinen
2019-08-02 18:48     ` John Hubbard
2019-08-03 20:03       ` John Hubbard
2019-08-02  2:19 ` [PATCH 07/34] drm/radeon: " john.hubbard
2019-08-02  2:19 ` [PATCH 08/34] media/ivtv: " john.hubbard
2019-08-02  2:19 ` [PATCH 09/34] media/v4l2-core/mm: " john.hubbard
2019-08-02  2:19 ` [PATCH 10/34] genwqe: " john.hubbard
2019-08-03  7:06   ` Greg Kroah-Hartman
2019-08-02  2:19 ` [PATCH 11/34] scif: " john.hubbard
2019-08-02  2:19 ` [PATCH 12/34] vmci: " john.hubbard
2019-08-02  2:19 ` [PATCH 13/34] rapidio: " john.hubbard
2019-08-02  2:19 ` [PATCH 14/34] oradax: " john.hubbard
2019-08-02  2:19 ` [PATCH 15/34] staging/vc04_services: " john.hubbard
2019-08-03  7:06   ` Greg Kroah-Hartman
2019-08-02  2:19 ` [PATCH 16/34] drivers/tee: " john.hubbard
2019-08-02  6:29   ` Jens Wiklander
2019-08-02 18:51     ` John Hubbard
2019-08-02  2:19 ` [PATCH 17/34] vfio: " john.hubbard
2019-08-02  2:19 ` [PATCH 18/34] fbdev/pvr2fb: " john.hubbard
2019-08-02  2:19 ` [PATCH 19/34] fsl_hypervisor: " john.hubbard
2019-08-02  2:19 ` [PATCH 20/34] xen: " john.hubbard
2019-08-02  4:36   ` Juergen Gross
2019-08-02  5:48     ` John Hubbard
2019-08-02  6:10       ` Juergen Gross
2019-08-02 16:09         ` Weiny, Ira
2019-08-02 19:25           ` John Hubbard
2019-08-02  2:19 ` [PATCH 21/34] fs/exec.c: " john.hubbard
2019-08-02  2:19 ` [PATCH 22/34] orangefs: " john.hubbard
2019-08-02  2:19 ` [PATCH 23/34] uprobes: " john.hubbard
2019-08-02  2:19 ` [PATCH 24/34] futex: " john.hubbard
2019-08-02  2:19 ` [PATCH 25/34] mm/frame_vector.c: " john.hubbard
2019-08-02  2:19 ` [PATCH 26/34] mm/gup_benchmark.c: " john.hubbard
2019-08-02 14:19   ` Keith Busch
2019-08-02  2:19 ` [PATCH 27/34] mm/memory.c: " john.hubbard
2019-08-02  2:19 ` [PATCH 28/34] mm/madvise.c: " john.hubbard
2019-08-02  2:20 ` [PATCH 29/34] mm/process_vm_access.c: " john.hubbard
2019-08-02  2:20 ` [PATCH 30/34] crypt: " john.hubbard
2019-08-02  2:20 ` [PATCH 31/34] nfs: " john.hubbard
2019-08-03  1:27   ` Calum Mackay
2019-08-03  1:41     ` John Hubbard [this message]
2019-08-04 23:28       ` Calum Mackay
2019-08-02  2:20 ` [PATCH 32/34] goldfish_pipe: " john.hubbard
2019-08-02  2:20 ` [PATCH 33/34] kernel/events/core.c: " john.hubbard
2019-08-02  2:20 ` [PATCH 34/34] fs/binfmt_elf: " john.hubbard
2019-08-02  9:12 ` [PATCH 00/34] put_user_pages(): miscellaneous call sites Michal Hocko
2019-08-02 12:41   ` Jan Kara
2019-08-02 14:24     ` Matthew Wilcox
2019-08-02 14:52       ` Jan Kara
2019-08-02 19:14         ` John Hubbard
2019-08-07  8:37           ` Jan Kara
2019-08-07  8:46             ` Michal Hocko
2019-08-08  2:36               ` Ira Weiny
2019-08-08  3:46                 ` John Hubbard
2019-08-08 16:25                   ` Weiny, Ira
2019-08-08 18:18                     ` John Hubbard
2019-08-09  8:34                 ` Jan Kara

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