From: Christoph Hellwig <hch@infradead.org>
To: Roman Gushchin <guro@fb.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Zi Yan <ziy@nvidia.com>, Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
saberlily.xia@hisilicon.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, kernel-team@fb.com
Subject: Re: [PATCH v1 1/2] mm: cma: introduce cma_release_nowait()
Date: Sat, 24 Oct 2020 08:59:59 +0100 [thread overview]
Message-ID: <20201024075959.GA4285@infradead.org> (raw)
In-Reply-To: <20201022225308.2927890-2-guro@fb.com>
Btw, I think we also need to use this nonblocking version from
dma_free_contiguous. dma_free* is defined to not block. In practice
callers mostly care if they also did GFP_ATOMIC allocations, which
don't dip into CMA, but I think we do have a problem.
next prev parent reply other threads:[~2020-10-24 8:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-22 22:53 [PATCH v1 0/2] mm: cma: introduce a non-blocking version of cma_release() Roman Gushchin
2020-10-22 22:53 ` [PATCH v1 1/2] mm: cma: introduce cma_release_nowait() Roman Gushchin
2020-10-24 7:59 ` Christoph Hellwig [this message]
2020-10-27 19:56 ` Roman Gushchin
2020-10-22 22:53 ` [PATCH v1 2/2] mm: hugetlb: don't drop hugetlb_lock around cma_release() call Roman Gushchin
2020-10-22 23:42 ` [PATCH v1 0/2] mm: cma: introduce a non-blocking version of cma_release() Zi Yan
2020-10-23 0:47 ` Roman Gushchin
2020-10-23 0:58 ` Zi Yan
2020-10-23 20:55 ` Roman Gushchin
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