| Message ID | 20221116102659.70287-19-david@redhat.com (mailing list archive) |
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From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
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Leon Romanovsky <leon@kernel.org>
Subject: [PATCH mm-unstable v1 18/20] RDMA/hw/qib/qib_user_pages: remove
FOLL_FORCE usage
Date: Wed, 16 Nov 2022 11:26:57 +0100
Message-Id: <20221116102659.70287-19-david@redhat.com>
In-Reply-To: <20221116102659.70287-1-david@redhat.com>
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|
| Series |
mm/gup: remove FOLL_FORCE usage from drivers (reliable R/O long-term pinning)
|
expand
|
diff --git a/drivers/infiniband/hw/qib/qib_user_pages.c b/drivers/infiniband/hw/qib/qib_user_pages.c index f4b5f05058e4..f693bc753b6b 100644 --- a/drivers/infiniband/hw/qib/qib_user_pages.c +++ b/drivers/infiniband/hw/qib/qib_user_pages.c @@ -110,7 +110,7 @@ int qib_get_user_pages(unsigned long start_page, size_t num_pages, for (got = 0; got < num_pages; got += ret) { ret = pin_user_pages(start_page + got * PAGE_SIZE, num_pages - got, - FOLL_LONGTERM | FOLL_WRITE | FOLL_FORCE, + FOLL_LONGTERM | FOLL_WRITE, p + got, NULL); if (ret < 0) { mmap_read_unlock(current->mm);
FOLL_FORCE is really only for ptrace access. As we unpin the pinned pages using unpin_user_pages_dirty_lock(true), the assumption is that all these pages are writable. FOLL_FORCE in this case seems to be a legacy leftover. Let's just remove it. Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Leon Romanovsky <leon@kernel.org> Signed-off-by: David Hildenbrand <david@redhat.com> --- drivers/infiniband/hw/qib/qib_user_pages.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)