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| Filename | Latest commit message | Latest commit date |
|---|---|---|
b4c3fbe636
The mesh table code walks over hash tables for two purposes. First of all it's used as part of a netlink dump process, but it is also used for looking up entries to delete using criteria other than the hash key. The second purpose is directly contrary to the design specification of rhashtable walks. It is only meant for use by netlink dumps. This is because rhashtable is resizable and you cannot obtain a stable walk over it during a resize process. In fact mesh's use of rhashtable for dumping is bogus too. Rather than using rhashtable walk's iterator to keep track of the current position, it always converts the current position to an integer which defeats the purpose of the iterator. Therefore this patch converts all uses of rhashtable walk into a simple linked list. This patch also adds a new spin lock to protect the hash table insertion/removal as well as the walk list modifications. In fact the previous code was buggy as the removals can race with each other, potentially resulting in a double-free. Cc: stable@vger.kernel.org Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Johannes Berg <johannes.berg@intel.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 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.