global_dirtyable

函数名称：global_dirtyable_memory - number of globally dirtyable pages* Return: the global number of pages potentially available for dirty* page cache. This is the base value for the global dirty limits.

函数原型：static unsigned long global_dirtyable_memory(void)

返回类型：unsigned long

参数：无

**调用者**
名称	描述
global_dirty_limits	global_dirty_limits - background-writeback and dirty-throttling thresholds@pbackground: out parameter for bg_thresh@pdirty: out parameter for thresh* Calculate bg_thresh and thresh for global_wb_domain. See* domain_dirty_limits() for details.
node_dirty_limit	de_dirty_limit - maximum number of dirty pages allowed in a node@pgdat: the node Return: the maximum number of dirty pages allowed in a node, based* on the node's dirtyable memory.
balance_dirty_pages	alance_dirty_pages() must be called by processes which are generating dirty* data
wb_over_bg_thresh	wb_over_bg_thresh - does @wb need to be written back?@wb: bdi_writeback of interest Determines whether background writeback should keep writing @wb or it's* clean enough.* Return: %true if writeback should continue.

函数逻辑报告