diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-settings.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c index 8d339349289..9acd0b7e802 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -194,6 +194,23 @@ void blk_queue_bounce_limit(struct request_queue *q, u64 dma_mask) EXPORT_SYMBOL(blk_queue_bounce_limit); /** + * blk_queue_bounce_pfn - set the bounce buffer limit for queue + * @q: the request queue for the device + * @pfn: max address + * + * Description: + * This function is similar to blk_queue_bounce_limit except it + * neither changes allocation flags, nor does it set up the ISA DMA + * pool. This function should only be used by stacking drivers. + * Hardware drivers should use blk_queue_bounce_limit instead. + */ +void blk_queue_bounce_pfn(struct request_queue *q, u64 pfn) +{ + q->limits.bounce_pfn = pfn; +} +EXPORT_SYMBOL(blk_queue_bounce_pfn); + +/** * blk_queue_max_sectors - set max sectors for a request for this queue * @q: the request queue for the device * @max_sectors: max sectors in the usual 512b unit |