linux-nfs.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Bob Liu <bob.liu@oracle.com>
To: john.hubbard@gmail.com, Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
	Anna Schumaker <anna.schumaker@netapp.com>,
	"David S . Miller" <davem@davemloft.net>,
	Dominique Martinet <asmadeus@codewreck.org>,
	Eric Van Hensbergen <ericvh@gmail.com>,
	Jason Gunthorpe <jgg@ziepe.ca>, Jason Wang <jasowang@redhat.com>,
	Jens Axboe <axboe@kernel.dk>, Latchesar Ionkov <lucho@ionkov.net>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Miklos Szeredi <miklos@szeredi.hu>,
	Trond Myklebust <trond.myklebust@hammerspace.com>,
	Christoph Hellwig <hch@lst.de>,
	Matthew Wilcox <willy@infradead.org>,
	linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
	ceph-devel@vger.kernel.org, kvm@vger.kernel.org,
	linux-block@vger.kernel.org, linux-cifs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org,
	linux-rdma@vger.kernel.org, netdev@vger.kernel.org,
	samba-technical@lists.samba.org,
	v9fs-developer@lists.sourceforge.net,
	virtualization@lists.linux-foundation.org,
	John Hubbard <jhubbard@nvidia.com>
Subject: Re: [PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*()
Date: Thu, 25 Jul 2019 08:41:04 +0800	[thread overview]
Message-ID: <8621066c-e242-c449-eb04-4f2ce6867140@oracle.com> (raw)
In-Reply-To: <20190724042518.14363-1-jhubbard@nvidia.com>

On 7/24/19 12:25 PM, john.hubbard@gmail.com wrote:
> From: John Hubbard <jhubbard@nvidia.com>
> 
> Hi,
> 
> This is mostly Jerome's work, converting the block/bio and related areas
> to call put_user_page*() instead of put_page(). Because I've changed
> Jerome's patches, in some cases significantly, I'd like to get his
> feedback before we actually leave him listed as the author (he might
> want to disown some or all of these).
> 

Could you add some background to the commit log for people don't have the context..
Why this converting? What's the main differences?

Regards, -Bob

> I added a new patch, in order to make this work with Christoph Hellwig's
> recent overhaul to bio_release_pages(): "block: bio_release_pages: use
> flags arg instead of bool".
> 
> I've started the series with a patch that I've posted in another
> series ("mm/gup: add make_dirty arg to put_user_pages_dirty_lock()"[1]),
> because I'm not sure which of these will go in first, and this allows each
> to stand alone.
> 
> Testing: not much beyond build and boot testing has been done yet. And
> I'm not set up to even exercise all of it (especially the IB parts) at
> run time.
> 
> Anyway, changes here are:
> 
> * Store, in the iov_iter, a "came from gup (get_user_pages)" parameter.
>   Then, use the new iov_iter_get_pages_use_gup() to retrieve it when
>   it is time to release the pages. That allows choosing between put_page()
>   and put_user_page*().
> 
> * Pass in one more piece of information to bio_release_pages: a "from_gup"
>   parameter. Similar use as above.
> 
> * Change the block layer, and several file systems, to use
>   put_user_page*().
> 
> [1] https://urldefense.proofpoint.com/v2/url?u=https-3A__lore.kernel.org_r_20190724012606.25844-2D2-2Djhubbard-40nvidia.com&d=DwIDaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=1ktT0U2YS_I8Zz2o-MS1YcCAzWZ6hFGtyTgvVMGM7gI&m=FpFhv2rjbKCAYGmO6Hy8WJAottr1Qz_mDKDLObQ40FU&s=q-_mX3daEr22WbdZMElc_ZbD8L9oGLD7U0xLeyJ661Y&e= 
>     And please note the correction email that I posted as a follow-up,
>     if you're looking closely at that patch. :) The fixed version is
>     included here.
> 
> John Hubbard (3):
>   mm/gup: add make_dirty arg to put_user_pages_dirty_lock()
>   block: bio_release_pages: use flags arg instead of bool
>   fs/ceph: fix a build warning: returning a value from void function
> 
> Jérôme Glisse (9):
>   iov_iter: add helper to test if an iter would use GUP v2
>   block: bio_release_pages: convert put_page() to put_user_page*()
>   block_dev: convert put_page() to put_user_page*()
>   fs/nfs: convert put_page() to put_user_page*()
>   vhost-scsi: convert put_page() to put_user_page*()
>   fs/cifs: convert put_page() to put_user_page*()
>   fs/fuse: convert put_page() to put_user_page*()
>   fs/ceph: convert put_page() to put_user_page*()
>   9p/net: convert put_page() to put_user_page*()
> 
>  block/bio.c                                |  81 ++++++++++++---
>  drivers/infiniband/core/umem.c             |   5 +-
>  drivers/infiniband/hw/hfi1/user_pages.c    |   5 +-
>  drivers/infiniband/hw/qib/qib_user_pages.c |   5 +-
>  drivers/infiniband/hw/usnic/usnic_uiom.c   |   5 +-
>  drivers/infiniband/sw/siw/siw_mem.c        |   8 +-
>  drivers/vhost/scsi.c                       |  13 ++-
>  fs/block_dev.c                             |  22 +++-
>  fs/ceph/debugfs.c                          |   2 +-
>  fs/ceph/file.c                             |  62 ++++++++---
>  fs/cifs/cifsglob.h                         |   3 +
>  fs/cifs/file.c                             |  22 +++-
>  fs/cifs/misc.c                             |  19 +++-
>  fs/direct-io.c                             |   2 +-
>  fs/fuse/dev.c                              |  22 +++-
>  fs/fuse/file.c                             |  53 +++++++---
>  fs/nfs/direct.c                            |  10 +-
>  include/linux/bio.h                        |  22 +++-
>  include/linux/mm.h                         |   5 +-
>  include/linux/uio.h                        |  11 ++
>  mm/gup.c                                   | 115 +++++++++------------
>  net/9p/trans_common.c                      |  14 ++-
>  net/9p/trans_common.h                      |   3 +-
>  net/9p/trans_virtio.c                      |  18 +++-
>  24 files changed, 357 insertions(+), 170 deletions(-)
> 


  parent reply	other threads:[~2019-07-25  0:44 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-24  4:25 [PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*() john.hubbard
2019-07-24  4:25 ` [PATCH 01/12] mm/gup: add make_dirty arg to put_user_pages_dirty_lock() john.hubbard
2019-07-24  4:25 ` [PATCH 02/12] iov_iter: add helper to test if an iter would use GUP v2 john.hubbard
2019-07-24  4:25 ` [PATCH 03/12] block: bio_release_pages: use flags arg instead of bool john.hubbard
2019-07-24  5:30   ` Christoph Hellwig
2019-07-29 20:57     ` Jerome Glisse
2019-07-30 10:25       ` Christoph Hellwig
2019-07-30 15:57         ` Jerome Glisse
2019-08-01  8:20           ` Christoph Hellwig
2019-07-24  4:25 ` [PATCH 04/12] block: bio_release_pages: convert put_page() to put_user_page*() john.hubbard
2019-07-24  4:25 ` [PATCH 05/12] block_dev: " john.hubbard
2019-07-24  4:25 ` [PATCH 06/12] fs/nfs: " john.hubbard
2019-07-24  4:25 ` [PATCH 07/12] vhost-scsi: " john.hubbard
2019-07-24  4:34   ` John Hubbard
2019-07-24  8:07   ` Michael S. Tsirkin
2019-07-24  4:25 ` [PATCH 08/12] fs/cifs: " john.hubbard
2019-07-24  4:25 ` [PATCH 09/12] fs/fuse: " john.hubbard
2019-07-24  4:25 ` [PATCH 10/12] fs/ceph: " john.hubbard
2019-07-24  4:25 ` [PATCH 11/12] 9p/net: " john.hubbard
2019-07-24  4:25 ` [PATCH 12/12] fs/ceph: fix a build warning: returning a value from void function john.hubbard
2019-07-24  6:17 ` [PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*() Christoph Hellwig
2019-07-24 23:23   ` John Hubbard
2019-08-05 22:54   ` John Hubbard
2019-08-07  6:34     ` Christoph Hellwig
2019-08-07  6:38       ` John Hubbard
2019-07-25  0:41 ` Bob Liu [this message]
2019-07-26  1:24   ` John Hubbard

Reply instructions:

You may reply publicly 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=8621066c-e242-c449-eb04-4f2ce6867140@oracle.com \
    --to=bob.liu@oracle.com \
    --cc=akpm@linux-foundation.org \
    --cc=anna.schumaker@netapp.com \
    --cc=asmadeus@codewreck.org \
    --cc=axboe@kernel.dk \
    --cc=ceph-devel@vger.kernel.org \
    --cc=davem@davemloft.net \
    --cc=ericvh@gmail.com \
    --cc=hch@lst.de \
    --cc=jasowang@redhat.com \
    --cc=jgg@ziepe.ca \
    --cc=jhubbard@nvidia.com \
    --cc=john.hubbard@gmail.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-block@vger.kernel.org \
    --cc=linux-cifs@vger.kernel.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-nfs@vger.kernel.org \
    --cc=linux-rdma@vger.kernel.org \
    --cc=lucho@ionkov.net \
    --cc=miklos@szeredi.hu \
    --cc=mst@redhat.com \
    --cc=netdev@vger.kernel.org \
    --cc=samba-technical@lists.samba.org \
    --cc=trond.myklebust@hammerspace.com \
    --cc=v9fs-developer@lists.sourceforge.net \
    --cc=viro@zeniv.linux.org.uk \
    --cc=virtualization@lists.linux-foundation.org \
    --cc=willy@infradead.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
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).