Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\bounce.c Create Date:2022-07-28 17:33:28
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:blk_queue_bounce

Proto:void blk_queue_bounce(struct request_queue *q, struct bio **bio_orig)

Type:void

Parameter:

TypeParameterName
struct request_queue *q
struct bio **bio_orig
367  If Not Check whether this bio carries any data or not. A NULL bio is allowed. Then Return
375  If Not (* queue needs bounce pages for pages above this limit & GFP_DMA) Then
376  If bounce_pfn >= blk_max_pfn Then Return
378  pool = page_pool
379  Else
380  BUG_ON(!mempool_initialized( & isa_page_pool))
381  pool = isa_page_pool
387  __blk_queue_bounce(q, bio_orig, pool)
Caller
NameDescribe
blk_mq_make_request