Linux-NFS Archive on lore.kernel.org
 help / color / Atom feed
From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
To: 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,
	"John Hubbard" <jhubbard@nvidia.com>,
	"Andy Walls" <awalls@md.metrocast.net>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>
Subject: Re: [PATCH v3 10/41] media/ivtv: convert put_page() to put_user_page*()
Date: Wed, 7 Aug 2019 10:51:17 +0200
Message-ID: <6fd38719-b5d3-f981-732f-da904e029546@xs4all.nl> (raw)
In-Reply-To: <20190807013340.9706-11-jhubbard@nvidia.com>

On 8/7/19 3:33 AM, john.hubbard@gmail.com wrote:
> From: John Hubbard <jhubbard@nvidia.com>
> 
> For pages that were retained via get_user_pages*(), release those pages
> via the new put_user_page*() routines, instead of via put_page() or
> release_pages().
> 
> This is part a tree-wide conversion, as described in commit fc1d8e7cca2d
> ("mm: introduce put_user_page*(), placeholder versions").
> 
> Cc: Andy Walls <awalls@md.metrocast.net>
> Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
> Cc: linux-media@vger.kernel.org
> Signed-off-by: John Hubbard <jhubbard@nvidia.com>

Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

Regards,

	Hans

> ---
>  drivers/media/pci/ivtv/ivtv-udma.c | 14 ++++----------
>  drivers/media/pci/ivtv/ivtv-yuv.c  | 11 +++--------
>  2 files changed, 7 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/media/pci/ivtv/ivtv-udma.c b/drivers/media/pci/ivtv/ivtv-udma.c
> index 5f8883031c9c..7c7f33c2412b 100644
> --- a/drivers/media/pci/ivtv/ivtv-udma.c
> +++ b/drivers/media/pci/ivtv/ivtv-udma.c
> @@ -92,7 +92,7 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
>  {
>  	struct ivtv_dma_page_info user_dma;
>  	struct ivtv_user_dma *dma = &itv->udma;
> -	int i, err;
> +	int err;
>  
>  	IVTV_DEBUG_DMA("ivtv_udma_setup, dst: 0x%08x\n", (unsigned int)ivtv_dest_addr);
>  
> @@ -119,8 +119,7 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
>  		IVTV_DEBUG_WARN("failed to map user pages, returned %d instead of %d\n",
>  			   err, user_dma.page_count);
>  		if (err >= 0) {
> -			for (i = 0; i < err; i++)
> -				put_page(dma->map[i]);
> +			put_user_pages(dma->map, err);
>  			return -EINVAL;
>  		}
>  		return err;
> @@ -130,9 +129,7 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
>  
>  	/* Fill SG List with new values */
>  	if (ivtv_udma_fill_sg_list(dma, &user_dma, 0) < 0) {
> -		for (i = 0; i < dma->page_count; i++) {
> -			put_page(dma->map[i]);
> -		}
> +		put_user_pages(dma->map, dma->page_count);
>  		dma->page_count = 0;
>  		return -ENOMEM;
>  	}
> @@ -153,7 +150,6 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
>  void ivtv_udma_unmap(struct ivtv *itv)
>  {
>  	struct ivtv_user_dma *dma = &itv->udma;
> -	int i;
>  
>  	IVTV_DEBUG_INFO("ivtv_unmap_user_dma\n");
>  
> @@ -170,9 +166,7 @@ void ivtv_udma_unmap(struct ivtv *itv)
>  	ivtv_udma_sync_for_cpu(itv);
>  
>  	/* Release User Pages */
> -	for (i = 0; i < dma->page_count; i++) {
> -		put_page(dma->map[i]);
> -	}
> +	put_user_pages(dma->map, dma->page_count);
>  	dma->page_count = 0;
>  }
>  
> diff --git a/drivers/media/pci/ivtv/ivtv-yuv.c b/drivers/media/pci/ivtv/ivtv-yuv.c
> index cd2fe2d444c0..2c61a11d391d 100644
> --- a/drivers/media/pci/ivtv/ivtv-yuv.c
> +++ b/drivers/media/pci/ivtv/ivtv-yuv.c
> @@ -30,7 +30,6 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
>  	struct yuv_playback_info *yi = &itv->yuv_info;
>  	u8 frame = yi->draw_frame;
>  	struct yuv_frame_info *f = &yi->new_frame_info[frame];
> -	int i;
>  	int y_pages, uv_pages;
>  	unsigned long y_buffer_offset, uv_buffer_offset;
>  	int y_decode_height, uv_decode_height, y_size;
> @@ -81,8 +80,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
>  				 uv_pages, uv_dma.page_count);
>  
>  			if (uv_pages >= 0) {
> -				for (i = 0; i < uv_pages; i++)
> -					put_page(dma->map[y_pages + i]);
> +				put_user_pages(&dma->map[y_pages], uv_pages);
>  				rc = -EFAULT;
>  			} else {
>  				rc = uv_pages;
> @@ -93,8 +91,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
>  				 y_pages, y_dma.page_count);
>  		}
>  		if (y_pages >= 0) {
> -			for (i = 0; i < y_pages; i++)
> -				put_page(dma->map[i]);
> +			put_user_pages(dma->map, y_pages);
>  			/*
>  			 * Inherit the -EFAULT from rc's
>  			 * initialization, but allow it to be
> @@ -112,9 +109,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
>  	/* Fill & map SG List */
>  	if (ivtv_udma_fill_sg_list (dma, &uv_dma, ivtv_udma_fill_sg_list (dma, &y_dma, 0)) < 0) {
>  		IVTV_DEBUG_WARN("could not allocate bounce buffers for highmem userspace buffers\n");
> -		for (i = 0; i < dma->page_count; i++) {
> -			put_page(dma->map[i]);
> -		}
> +		put_user_pages(dma->map, dma->page_count);
>  		dma->page_count = 0;
>  		return -ENOMEM;
>  	}
> 


  reply index

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-07  1:32 [PATCH v3 00/39] put_user_pages(): miscellaneous call sites john.hubbard
2019-08-07  1:33 ` [PATCH v3 01/41] mm/gup: add make_dirty arg to put_user_pages_dirty_lock() john.hubbard
2019-08-07  1:33 ` [PATCH v3 02/41] drivers/gpu/drm/via: convert put_page() to put_user_page*() john.hubbard
2019-08-07  1:33 ` [PATCH v3 03/41] net/xdp: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 04/41] net/rds: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 05/41] net/ceph: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 06/41] x86/kvm: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 07/41] drm/etnaviv: convert release_pages() to put_user_pages() john.hubbard
2019-08-07  1:33 ` [PATCH v3 08/41] drm/i915: convert put_page() to put_user_page*() john.hubbard
2019-08-07  1:33 ` [PATCH v3 09/41] drm/radeon: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 10/41] media/ivtv: " john.hubbard
2019-08-07  8:51   ` Hans Verkuil [this message]
2019-08-07  1:33 ` [PATCH v3 11/41] media/v4l2-core/mm: " john.hubbard
2019-08-07  7:20   ` Sakari Ailus
2019-08-07  8:07   ` Hans Verkuil
2019-08-07  1:33 ` [PATCH v3 12/41] genwqe: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 13/41] scif: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 14/41] vmci: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 15/41] rapidio: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 16/41] oradax: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 17/41] staging/vc04_services: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 18/41] drivers/tee: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 19/41] vfio: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 20/41] fbdev/pvr2fb: " john.hubbard
2019-08-09 11:38   ` Bartlomiej Zolnierkiewicz
2019-08-07  1:33 ` [PATCH v3 21/41] fsl_hypervisor: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 22/41] xen: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 23/41] fs/exec.c: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 24/41] orangefs: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 25/41] uprobes: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 26/41] futex: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 27/41] mm/frame_vector.c: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 28/41] mm/gup_benchmark.c: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 29/41] mm/memory.c: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 30/41] mm/madvise.c: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 31/41] mm/process_vm_access.c: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 32/41] crypt: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 33/41] fs/nfs: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 34/41] goldfish_pipe: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 35/41] kernel/events/core.c: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 36/41] fs/binfmt_elf: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 37/41] security/tomoyo: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 38/41] powerpc: " john.hubbard
2019-08-08  5:42   ` Michael Ellerman
2019-08-09  1:26     ` John Hubbard
2019-08-09 12:20       ` Michael Ellerman
2019-08-07  1:33 ` [PATCH v3 39/41] mm/mlock.c: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 40/41] mm/mempolicy.c: " john.hubbard
2019-08-07  1:33 ` [PATCH v3 41/41] mm/ksm: " john.hubbard
2019-08-07  1:49 ` [PATCH v3 00/39] put_user_pages(): miscellaneous call sites John Hubbard
2019-08-30  1:29   ` Mike Marshall
2019-08-30  2:21     ` John Hubbard

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=6fd38719-b5d3-f981-732f-da904e029546@xs4all.nl \
    --to=hverkuil-cisco@xs4all.nl \
    --cc=akpm@linux-foundation.org \
    --cc=amd-gfx@lists.freedesktop.org \
    --cc=awalls@md.metrocast.net \
    --cc=ceph-devel@vger.kernel.org \
    --cc=dan.j.williams@intel.com \
    --cc=dave.hansen@linux.intel.com \
    --cc=david@fromorbit.com \
    --cc=devel@driverdev.osuosl.org \
    --cc=devel@lists.orangefs.org \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=hch@infradead.org \
    --cc=intel-gfx@lists.freedesktop.org \
    --cc=ira.weiny@intel.com \
    --cc=jack@suse.cz \
    --cc=jgg@ziepe.ca \
    --cc=jglisse@redhat.com \
    --cc=jhubbard@nvidia.com \
    --cc=john.hubbard@gmail.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-block@vger.kernel.org \
    --cc=linux-crypto@vger.kernel.org \
    --cc=linux-fbdev@vger.kernel.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-media@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-nfs@vger.kernel.org \
    --cc=linux-rdma@vger.kernel.org \
    --cc=linux-rpi-kernel@lists.infradead.org \
    --cc=linux-xfs@vger.kernel.org \
    --cc=mchehab@kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=rds-devel@oss.oracle.com \
    --cc=sparclinux@vger.kernel.org \
    --cc=x86@kernel.org \
    --cc=xen-devel@lists.xenproject.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-NFS Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-nfs/0 linux-nfs/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-nfs linux-nfs/ https://lore.kernel.org/linux-nfs \
		linux-nfs@vger.kernel.org linux-nfs@archiver.kernel.org
	public-inbox-index linux-nfs


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-nfs


AGPL code for this site: git clone https://public-inbox.org/ public-inbox