bio_clone

函数名称：_clone_fast - clone a bio that shares the original bio's biovec*@bio: bio to clone*@gfp_mask: allocation priority*@bs: bio_set to allocate from* Like __bio_clone_fast, only also allocates the returned bio

函数原型：struct bio *bio_clone_fast(struct bio *bio, gfp_t gfp_mask, struct bio_set *bs)

返回类型：struct bio

参数：

类型	参数	名称
struct bio *	bio
gfp_t	gfp_mask
struct bio_set *	bs

661

b等于_alloc_bioset - allocate a bio for I/O*@gfp_mask: the GFP_* mask given to the slab allocator*@nr_iovecs: number of iovecs to pre-allocate*@bs: the bio_set to allocate from

662

如果非b则返回:NULL

665

__bio_clone_fast - clone a bio that shares the original bio's biovec*@bio: destination bio*@bio_src: bio to clone* Clone a &bio. Caller will own the returned bio, but not* the actual data it points to. Reference count of returned* bio will be one.

667

如果bio_integrity(bio)则

670

ret等于bio_integrity_clone(b, bio, gfp_mask)

672

如果ret小于0则

673

_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.

674

返回:NULL

678

返回:b

**调用者**
名称	描述
bio_split	_split - split a bio@bio: bio to split@sectors: number of sectors to split from the front of @bio@gfp: gfp mask@bs: bio set to allocate from* Allocates and returns a new bio which represents @sectors from the start of
blk_rq_prep_clone	lk_rq_prep_clone - Helper function to setup clone request@rq: the request to be setup@rq_src: original request to be cloned@bs: bio_set that bios for clone are allocated from@gfp_mask: memory allocation mask for bio

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告