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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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/**
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 * @file    frame.c
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 * @brief   Physical frame allocator.
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 *
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 * This file contains the physical frame allocator and memory zone management.
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 * The frame allocator is built on top of the buddy allocator.
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 *
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 * @see buddy.c
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 */
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/*
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/*
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 * Locking order
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 * Locking order
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 *
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 *
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 * In order to access particular zone, the process must first lock
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 * In order to access particular zone, the process must first lock
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 * the zones.lock, then lock the zone and then unlock the zones.lock.
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 * the zones.lock, then lock the zone and then unlock the zones.lock.