From: Jason Gunthorpe <jgg@nvidia.com>
To: Maor Gottlieb <maorg@nvidia.com>
Cc: Leon Romanovsky <leon@kernel.org>,
Doug Ledford <dledford@redhat.com>,
Christoph Hellwig <hch@infradead.org>,
Ariel Elior <aelior@marvell.com>, Daniel Vetter <daniel@ffwll.ch>,
David Airlie <airlied@linux.ie>,
Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>,
dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
Jani Nikula <jani.nikula@linux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Michal Kalderon <mkalderon@marvell.com>,
Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>,
Mustafa Ismail <mustafa.ismail@intel.com>,
Rodrigo Vivi <rodrigo.vivi@intel.com>,
Roland Scheidegger <sroland@vmware.com>,
Shiraz Saleem <shiraz.saleem@intel.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
VMware Graphics <linux-graphics-maintainer@vmware.com>,
Weihang Li <liweihang@huawei.com>,
Wenpeng Liang <liangwenpeng@huawei.com>,
Yishai Hadas <yishaih@nvidia.com>, Zack Rusin <zackr@vmware.com>,
Zhu Yanjun <zyjzyj2000@gmail.com>
Subject: Re: [PATCH rdma-next v3 2/3] lib/scatterlist: Fix wrong update of orig_nents
Date: Mon, 23 Aug 2021 09:45:41 -0300 [thread overview]
Message-ID: <20210823124541.GM1721383@nvidia.com> (raw)
In-Reply-To: <85542c97-c7e0-3db3-baa8-2413c00f75a4@nvidia.com>
On Mon, Aug 23, 2021 at 02:09:37PM +0300, Maor Gottlieb wrote:
>
> On 8/20/2021 6:54 PM, Jason Gunthorpe wrote:
> > On Thu, Jul 29, 2021 at 12:39:12PM +0300, Leon Romanovsky wrote:
> >
> > > +/**
> > > + * __sg_free_table - Free a previously mapped sg table
> > > + * @table: The sg table header to use
> > > + * @max_ents: The maximum number of entries per single scatterlist
> > > + * @total_ents: The total number of entries in the table
> > > + * @nents_first_chunk: Number of entries int the (preallocated) first
> > > + * scatterlist chunk, 0 means no such preallocated
> > > + * first chunk
> > > + * @free_fn: Free function
> > > + *
> > > + * Description:
> > > + * Free an sg table previously allocated and setup with
> > > + * __sg_alloc_table(). The @max_ents value must be identical to
> > > + * that previously used with __sg_alloc_table().
> > > + *
> > > + **/
> > > +void __sg_free_table(struct sg_table *table, unsigned int max_ents,
> > > + unsigned int nents_first_chunk, sg_free_fn *free_fn)
> > > +{
> > > + sg_free_table_entries(table, max_ents, nents_first_chunk, free_fn,
> > > + table->orig_nents);
> > > +}
> > > EXPORT_SYMBOL(__sg_free_table);
> > This is getting a bit indirect, there is only one caller of
> > __sg_free_table() in sg_pool.c, so may as well just export
> > sg_free_table_entries have have it use that directly.
>
> So I can just extend __sg_free_table to get number of entries. What do you
> think?
Isn't the point here that different paths to __sg_free_table require
different entries? What do you mean?
Jason
next prev parent reply other threads:[~2021-08-23 12:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-29 9:39 [PATCH rdma-next v3 0/3] SG fix together with update to RDMA umem Leon Romanovsky
2021-07-29 9:39 ` [PATCH rdma-next v3 1/3] lib/scatterlist: Provide a dedicated function to support table append Leon Romanovsky
2021-07-29 9:39 ` [PATCH rdma-next v3 2/3] lib/scatterlist: Fix wrong update of orig_nents Leon Romanovsky
2021-08-20 15:54 ` Jason Gunthorpe
2021-08-20 15:57 ` Jason Gunthorpe
2021-08-23 11:09 ` Maor Gottlieb
2021-08-23 12:45 ` Jason Gunthorpe [this message]
2021-08-23 13:45 ` Maor Gottlieb
2021-08-23 13:54 ` Jason Gunthorpe
2021-07-29 9:39 ` [PATCH rdma-next v3 3/3] RDMA: Use the sg_table directly and remove the opencoded version from umem Leon Romanovsky
2021-08-20 16:18 ` [PATCH rdma-next v3 0/3] SG fix together with update to RDMA umem Jason Gunthorpe
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=20210823124541.GM1721383@nvidia.com \
--to=jgg@nvidia.com \
--cc=aelior@marvell.com \
--cc=airlied@linux.ie \
--cc=daniel@ffwll.ch \
--cc=dennis.dalessandro@cornelisnetworks.com \
--cc=dledford@redhat.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=hch@infradead.org \
--cc=intel-gfx@lists.freedesktop.org \
--cc=jani.nikula@linux.intel.com \
--cc=joonas.lahtinen@linux.intel.com \
--cc=leon@kernel.org \
--cc=liangwenpeng@huawei.com \
--cc=linux-graphics-maintainer@vmware.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=liweihang@huawei.com \
--cc=maarten.lankhorst@linux.intel.com \
--cc=maorg@nvidia.com \
--cc=mike.marciniszyn@cornelisnetworks.com \
--cc=mkalderon@marvell.com \
--cc=mripard@kernel.org \
--cc=mustafa.ismail@intel.com \
--cc=rodrigo.vivi@intel.com \
--cc=shiraz.saleem@intel.com \
--cc=sroland@vmware.com \
--cc=tzimmermann@suse.de \
--cc=yishaih@nvidia.com \
--cc=zackr@vmware.com \
--cc=zyjzyj2000@gmail.com \
/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).