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266a557981
Hou Tao says: ==================== The patch set fixes a lockdep warning for htab of map. The warning is found when running test_maps. The warning occurs when htab_put_fd_value() attempts to acquire map_idr_lock to free the map id of the inner map while already holding the bucket lock (raw_spinlock_t). The fix moves the invocation of free_htab_elem() after htab_unlock_bucket() and adds a test case to verify the solution. ==================== Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@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 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.