Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\blk-lib.c Create Date:2022-07-28 17:07:19
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:lkdev_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:

Proto:int blkdev_issue_write_same(struct block_device *bdev, sector_t sector, sector_t nr_sects, gfp_t gfp_mask, struct page *page)

Type:int

Parameter:

TypeParameterName
struct block_device *bdev
sector_tsector
sector_tnr_sects
gfp_tgfp_mask
struct page *page
196  struct bio * bio = NULL
200  lk_start_plug - initialize blk_plug and track it inside the task_struct*@plug: The &struct blk_plug that needs to be initialized* Description:* blk_start_plug() indicates to the block layer an intent by the caller
201  ret = __blkdev_issue_write_same - generate number of bios with same page*@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 to write*@biop: pointer to
203  If ret == 0 && bio Then
204  ret = submit_bio_wait - submit a bio, and wait until it completes*@bio: The &struct bio which describes the I/O* Simple wrapper around submit_bio()
205  _put - release a reference to a bio*@bio: bio to release reference to* Description:* Put a reference to a &struct bio, either one you have gotten with* bio_alloc, bio_get or bio_clone_*. The last put of a bio will free it.
207  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()
208  Return ret