函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\block_dev.c Create Date:2022-07-29 10:46:02
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：dev_write_page() - Start writing a page to a block device*@bdev: The device to write the page to*@sector: The offset on the device to write the page to (need not be aligned)*@page: The page to write*@wbc: The writeback_control for the write

函数原型：int bdev_write_page(struct block_device *bdev, sector_t sector, struct page *page, struct writeback_control *wbc)

返回类型：int

参数：

类型参数名称
struct block_device *bdev
sector_tsector
struct page *page
struct writeback_control *wbc
741  ops等于fops
743  如果非rw_page或bdev_get_integrity(bdev)则返回:负EOPNOTSUPP
745  result等于blk_queue_enter(bd_queue, 0)
746  如果result则返回:result
749  set_page_writeback(page)
750  result等于rw_page(bdev, sector + get_start_sect(bdev), page, REQ_OP_WRITE)
752  如果result则
753  d_page_writeback - end writeback against a page*@page: the page
754  否则
755  clean_page_buffers(page)
756  lock_page - unlock a locked page*@page: the page* Unlocks the page and wakes up sleepers in ___wait_on_page_locked().* Also wakes sleepers in wait_on_page_writeback() because the wakeup* mechanism between PageLocked pages and PageWriteback pages is shared.
758  blk_queue_exit(bd_queue)
759  返回:result
调用者
名称描述
__mpage_writepage
__swap_writepage