diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index ae835b42b6a3..1c5999359bfb 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -2359,6 +2359,25 @@ void blk_rq_bio_prep(struct request_queue *q, struct request *rq, rq->rq_disk = bio->bi_bdev->bd_disk; } +#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE +/** + * rq_flush_dcache_pages - Helper function to flush all pages in a request + * @rq: the request to be flushed + * + * Description: + * Flush all pages in @rq. + */ +void rq_flush_dcache_pages(struct request *rq) +{ + struct req_iterator iter; + struct bio_vec *bvec; + + rq_for_each_segment(bvec, rq, iter) + flush_dcache_page(bvec->bv_page); +} +EXPORT_SYMBOL_GPL(rq_flush_dcache_pages); +#endif + /** * blk_lld_busy - Check if underlying low-level drivers of a device are busy * @q : the queue of the device being checked |