函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\blk-core.c Create Date:2022-07-27 18:35:58
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:lk_finish_plug - mark the end of a batch of submitted I/O*@plug: The &struct blk_plug passed to blk_start_plug()* Description:* Indicate that a batch of I/O submissions is complete. This function* must be paired with an initial call to blk_start_plug()

函数原型:void blk_finish_plug(struct blk_plug *plug)

返回类型:void

参数:

类型参数名称
struct blk_plug *plug
1787  如果plug不等于plug则返回
1789  添加到请求队列
1791  plug = NULL
调用者
名称描述
read_pages
shrink_lruvec
SYSCALL_DEFINE3The madvise(2) system call
swap_cluster_readaheadswap_cluster_readahead - swap in pages in hope we need them soon*@entry: swap entry of this memory*@gfp_mask: memory allocation flags*@vmf: fault information* Returns the struct page for entry and addr, after queueing swapin.
swap_vma_readaheadswap_vma_readahead - swap in pages in hope we need them soon*@entry: swap entry of this memory*@gfp_mask: memory allocation flags*@vmf: fault information* Returns the struct page for entry and addr, after queueing swapin.* Primitive swap readahead code
blkdev_issue_discardlkdev_issue_discard - queue a discard*@bdev: blockdev to issue discard for*@sector: start sector*@nr_sects: number of sectors to discard*@gfp_mask: memory allocation flags (for bio_alloc)*@flags: BLKDEV_DISCARD_* flags to control behaviour* Description:
blkdev_issue_write_samelkdev_issue_write_same - queue a write same operation*@bdev: target blockdev*@sector: start sector*@nr_sects: number of sectors to write*@gfp_mask: memory allocation flags (for bio_alloc)*@page: page containing data* Description:
blkdev_issue_zerooutlkdev_issue_zeroout - zero-fill a block range*@bdev: blockdev to write*@sector: start sector*@nr_sects: number of sectors to write*@gfp_mask: memory allocation flags (for bio_alloc)*@flags: controls detailed behavior* Description:* Zero-fill a block
blk_throtl_dispatch_work_fnlk_throtl_dispatch_work_fn - work function for throtl_data->dispatch_work*@work: work item being executed* This function is queued for execution when bio's reach the bio_lists[]* of throtl_data->service_queue. Those bio's are ready and issued by this
wb_writebackExplicit flushing or periodic writeback of "old" data
fsync_buffers_list
__blkdev_direct_IO
blkdev_write_iterWrite data to the block device. Only intended for the block device itself* and the raw driver which basically is a fake block device.* Does not take i_mutex for the write and thus is not for general purpose* use.
do_blockdev_direct_IOThis is a library function for use by filesystem drivers
mpage_writepagesmpage_writepages - walk the list of dirty pages of the given address space & writepage() all of them*@mapping: address space structure to write*@wbc: subtract the number of written pages from *@wbc->nr_to_write
SYSCALL_DEFINE3sys_io_submit:* Queue the nr iocbs pointed to by iocbpp for processing
COMPAT_SYSCALL_DEFINE3
io_submit_state_endBatched submission is done, ensure local IO is flushed out.
iomap_dio_rwmap_dio_rw() always completes O_[D]SYNC writes regardless of whether the IO* is being issued as AIO or not. This allows us to optimise pure data writes* to use REQ_FUA rather than requiring generic_write_sync() to issue a* REQ_FLUSH post write
generic_writepagesgeneric_writepages - walk the list of dirty pages of the given address space and writepage() all of them