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Willem de Bruijn says: ==================== skb frag: kmap_atomic fixes skb frags may be backed by highmem and/or compound pages. Various code calls kmap_atomic to safely access highmem pages. But this needs additional care for compound pages. Fix a few issues: patch 1 expect kmap mappings with CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP patch 2 fixes kmap_atomic + compound page support in skb_seq_read patch 3 fixes kmap_atomic + compound page support in esp ==================== Link: https://lore.kernel.org/r/20210109221834.3459768-1-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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.