blk_queue_bounce_limit
Section: Kernel Hacker's Manual (9)
Updated: blk_queue_bounce_limit
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NAME
blk_queue_bounce_limit - set bounce buffer limit for queue
SYNOPSIS
void blk_queue_bounce_limit
(request_queue_t *q,
u64 dma_addr);
ARGUMENTS
- q
-
the request queue for the device
- dma_addr
-
bus address limit
DESCRIPTION
Different hardware can have different requirements as to what pages
it can do I/O directly to. A low level driver can call
blk_queue_bounce_limit to have lower memory pages allocated as bounce
buffers for doing I/O to pages residing above page. By default
the block layer sets this to the highest numbered "low" memory page.
Index
- NAME
-
- SYNOPSIS
-
- ARGUMENTS
-
- DESCRIPTION
-
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Time: 03:15:43 GMT, June 12, 2005