page_is_pfmemalloc

函数名称：Return true only if the page has been allocated with* ALLOC_NO_WATERMARKS and the low watermark was not* met implying that the system is under some pressure.

函数原型：static inline bool page_is_pfmemalloc(struct page *page)

返回类型：bool

参数：

类型	参数	名称
struct page *	page

**调用者**
名称	描述
page_frag_alloc
kmem_getpages	Interface to system's page allocator. No need to hold the* kmem_cache_node ->list_lock.* If we requested dmaable memory, we will get it. Even if we* did not request dmaable memory, we might get it, but that* would be relatively rare and ignorable.
allocate_slab
__skb_fill_page_desc	__skb_fill_page_desc - initialise a paged fragment in an skb@skb: buffer containing fragment to be initialised@i: paged fragment index to initialise@page: the page to use for this fragment@off: the offset to the data with @page*@size: the length of
skb_propagate_pfmemalloc	skb_propagate_pfmemalloc - Propagate pfmemalloc if skb is allocated after RX page@page: The page that was allocated from skb_alloc_page@skb: The skb that may need pfmemalloc set

函数逻辑报告