dio_bio_submit

Name:In the AIO read case we speculatively dirty the pages before starting IO.* During IO completion, any of these pages which happen to have been written* back will be redirtied by bio_check_pages_dirty().

Proto:static inline void dio_bio_submit(struct dio *dio, struct dio_submit *sdio)

Type:void

Parameter:

Type	Parameter	Name
struct dio *	dio
struct dio_submit *	sdio

444

bio = under assembly

447

bi_private = dio

449

spin_lock_irqsave( & protects BIO fields below , flags)

450

direct_io_worker() and bios ++

451

spin_unlock_irqrestore( & protects BIO fields below , flags)

453

If s IO async ? && op == REQ_OP_READ && pages should be dirtied Then bio_set_pages_dirty(bio)

456

bio_disk = bi_disk

458

If IO submition function Then

459

IO submition function (bio, inode, current first logical block in bio )

460

bio_cookie = BLK_QC_T_NONE

461

Else bio_cookie = submit_bio(bio)

464

under assembly = NULL

465

prev block is at a boundary = 0

466

current first logical block in bio = 0

**Caller**
Name	Describe
dio_send_cur_page	Put cur_page under IO
submit_page_section	An autonomous function to put a chunk of a page under deferred IO.* The caller doesn't actually know (or care) whether this piece of page is in* a BIO, or is under IO or whatever. We just take care of all possible * situations here
do_blockdev_direct_IO	This is a library function for use by filesystem drivers

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion

Function report