33f61d725a
After commit 1757659d022b ("ACPI: OSL: Implement deferred unmapping
of ACPI memory") in some cases acpi_release_memory() may return
before the target memory mappings actually go away, because they
are released asynchronously now.
Prevent it from returning prematurely by making it wait for the next
RCU grace period to elapse, for all of the RCU callbacks to complete
and for all of the scheduled work items to be flushed before
returning.
Fixes: 1757659d022b ("ACPI: OSL: Implement deferred unmapping of ACPI memory")
Reported-by: Kenneth R. Crudup <kenny@panix.com>
Tested-by: Kenneth R. Crudup <kenny@panix.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
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.