函数逻辑报告

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v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\direct-io.c Create Date:2022-07-29 10:46:30
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：How many pages are in the queue?

函数原型：static inline unsigned dio_pages_present(struct dio_submit *sdio)

返回类型：unsigned

参数：

类型参数名称
struct dio_submit *sdio
163  返回:last valid page + 1 减xt page to process
调用者
名称描述
dio_get_pageGet another userspace page. Returns an ERR_PTR on error. Pages are* buffered inside the dio so that we can call get_user_pages() against a* decent number of pages, less frequently. To provide nicer use of the* L1 cache.