linux-kernel - Re: [PATCH] rdma/qib: Remove deprecated kmap() call

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Message-Id: <167879466639.235555.17568096529294287253.b4-ty@kernel.org>
Date:   Tue, 14 Mar 2023 13:51:06 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>,
        Jason Gunthorpe <jgg@...pe.ca>, Ira Weiny <ira.weiny@...el.com>
Cc:     linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rdma/qib: Remove deprecated kmap() call


On Tue, 07 Mar 2023 09:15:31 -0800, Ira Weiny wrote:
> kmap() has been deprecated in favor of the kmap_local_page() call.
> kmap_local_page() is thread local.
> 
> In the sdma coalesce case the page allocated is potentially free'ed in a
> different context through qib_sdma_get_complete() ->
> qib_user_sdma_make_progress().  The use of kmap_local_page() is
> inappropriate in this call path.  However, the page is allocated using
> GFP_KERNEL and will never be from highmem.
> 
> [...]

Applied, thanks!

[1/1] rdma/qib: Remove deprecated kmap() call
      https://git.kernel.org/rdma/rdma/c/4f00848e490c59

Best regards,
-- 
Leon Romanovsky <leon@...nel.org>