Function report |
Source Code:block\blk-core.c |
Create Date:2022-07-28 16:59:44 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
home page | Tree |
Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:bio_attempt_discard_merge
Proto:bool bio_attempt_discard_merge(struct request_queue *q, struct request *req, struct bio *bio)
Type:bool
Parameter:
Type | Parameter | Name |
---|---|---|
struct request_queue * | q | |
struct request * | req | |
struct bio * | bio |
651 | segments = Number of discard segments (or ranges) the driver needs to fill in.* Each discard bio merged into a request is counted as one segment. |
653 | If segments >= queue_max_discard_segments(q) Then Go to no_merge |
659 | rq_qos_merge(q, req, bio) |
661 | request queue link = bio |
663 | total data len += residual I/O count |
664 | * Number of scatter-gather DMA addr+len pairs after * physical address coalescing is performed. = segments + 1 |
666 | blk_account_io_start(req, false) |
667 | Return true |
668 | no_merge : |
669 | req_set_nomerge(q, req) |
670 | Return false |
Name | Describe |
---|---|
blk_attempt_plug_merge | lk_attempt_plug_merge - try to merge with %current's plugged list*@q: request_queue new bio is being queued at*@bio: new bio being queued*@nr_segs: number of segments in @bio*@same_queue_rq: pointer to &struct request that gets filled in when* another |
blk_mq_sched_try_merge | |
blk_mq_bio_list_merge | Iterate list of requests and see if we can merge this bio with any* of them. |
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 |