Mempool_alloc is for allocating objects; if the mempool allocator fails to provide memory, then the pre-allocation pool will be used.
mempool_alloc用来分配对象；如果内存池分配器无法提供内存，那么就可以用预分配的池。
In addition to introducing the mempool feature for memory allocation, the 2.5 kernel also introduced three new GFP flags for normal memory allocations. They are.
除了为内存分配引入了内存池之外，2.5内核还引入了三个用于常规内存分配的新的GF P标记，它们是。
In addition to introducing the mempool feature for memory allocation, the 2.5 kernel also introduced three new GFP flags for normal memory allocations. They are.
除了为内存分配引入了内存池之外，2.5内核还引入了三个用于常规内存分配的新的GF P标记，它们是。
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