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Paul E. McKenney
99cf092058
Because the SLAB_TYPESAFE_BY_RCU code does not zero pages that are to be broken up into slabs, the memory returned by kmem_cache_alloc() must be fully initialized, including any spinlocks included in the newly allocated structure. This means that readers attempting to look up an SLAB_TYPESAFE_BY_RCU object must use a reference-counting approach. A spinlock may be acquired only after a reference is obtained, which prevents that object from being passed to kmem_struct_free(), but only while that reference continues to be held. Signed-off-by: Paul E. McKenney <paulmck@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.