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David Howells 6b2536462f rxrpc: Fix use of changed alignment param to page_frag_alloc_align()
Commit 411c5f3680 ("mm/page_alloc: modify page_frag_alloc_align() to
accept align as an argument") changed the way page_frag_alloc_align()
worked, but it didn't fix AF_RXRPC as that use of that allocator function
hadn't been merged yet at the time.  Now, when the AFS filesystem is used,
this results in:

  WARNING: CPU: 4 PID: 379 at include/linux/gfp.h:323 rxrpc_alloc_data_txbuf+0x9d/0x2b0 [rxrpc]

Fix this by using __page_frag_alloc_align() instead.

Note that it might be better to use an order-based alignment rather than a
mask-based alignment.

Fixes: 49489bb03a ("rxrpc: Do zerocopy using MSG_SPLICE_PAGES and page frags")
Signed-off-by: David Howells <dhowells@redhat.com>
Reported-by: Marc Dionne <marc.dionne@auristor.com>
cc: Yunsheng Lin <linyunsheng@huawei.com>
cc: Alexander Duyck <alexander.duyck@gmail.com>
cc: Michael S. Tsirkin <mst@redhat.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-03-14 13:09:52 +01:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the ReStructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.