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c9cabe05e4
We will get rid of RTNL from RTM_NEWROUTE and SIOCADDRT. Then, we must perform two lookups for nexthop and dev under RCU to guarantee their lifetime. ip6_route_info_create() calls nexthop_find_by_id() first if RTA_NH_ID is specified, and then allocates struct fib6_info. nexthop_find_by_id() must be called under RCU, but we do not want to use GFP_ATOMIC for memory allocation here, which will be likely to fail in ip6_route_multipath_add(). Let's move nexthop_find_by_id() after the memory allocation so that we can later split ip6_route_info_create() into two parts: the sleepable part and the RCU part. Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Link: https://patch.msgid.link/20250418000443.43734-6-kuniyu@amazon.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
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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 reStructuredText 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.