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block: remove rq_flush_dcache_pages 

This function is trivial, and flush_dcache_page is always defined, so
just open code it in the 2.5 callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20211117061404.331732-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-11-17 07:13:55 +01:00 committed by Jens Axboe
parent 79478bf9ea
commit 786d4e01c5
4 changed files with 13 additions and 32 deletions
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19
block/blk-core.c
View File

@ -1300,25 +1300,6 @@ void blk_steal_bios(struct bio_list *list, struct request *rq)
}
EXPORT_SYMBOL_GPL(blk_steal_bios);
#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

10
drivers/mtd/mtd_blkdevs.c
View File

@ -46,6 +46,8 @@ static blk_status_t do_blktrans_request(struct mtd_blktrans_ops *tr,
struct mtd_blktrans_dev *dev,
struct request *req)
{
struct req_iterator iter;
struct bio_vec bvec;
unsigned long block, nsect;
char *buf;
@ -76,13 +78,17 @@ static blk_status_t do_blktrans_request(struct mtd_blktrans_ops *tr,
}
}
kunmap(bio_page(req->bio));
rq_flush_dcache_pages(req);
rq_for_each_segment(bvec, req, iter)
flush_dcache_page(bvec.bv_page);
return BLK_STS_OK;
case REQ_OP_WRITE:
if (!tr->writesect)
return BLK_STS_IOERR;
rq_flush_dcache_pages(req);
rq_for_each_segment(bvec, req, iter)
flush_dcache_page(bvec.bv_page);
buf = kmap(bio_page(req->bio)) + bio_offset(req->bio);
for (; nsect > 0; nsect--, block++, buf += tr->blksize) {
if (tr->writesect(dev, block, buf)) {

6
drivers/mtd/ubi/block.c
View File

@ -294,6 +294,8 @@ static void ubiblock_do_work(struct work_struct *work)
int ret;
struct ubiblock_pdu *pdu = container_of(work, struct ubiblock_pdu, work);
struct request *req = blk_mq_rq_from_pdu(pdu);
struct req_iterator iter;
struct bio_vec bvec;
blk_mq_start_request(req);
@ -305,7 +307,9 @@ static void ubiblock_do_work(struct work_struct *work)
blk_rq_map_sg(req->q, req, pdu->usgl.sg);
ret = ubiblock_read(pdu);
rq_flush_dcache_pages(req);
rq_for_each_segment(bvec, req, iter)
flush_dcache_page(bvec.bv_page);
blk_mq_end_request(req, errno_to_blk_status(ret));
}

10
include/linux/blk-mq.h
View File

@ -1132,14 +1132,4 @@ static inline bool blk_req_can_dispatch_to_zone(struct request *rq)
}
#endif /* CONFIG_BLK_DEV_ZONED */
#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
# error "You should define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE for your platform"
#endif
#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
void rq_flush_dcache_pages(struct request *rq);
#else
static inline void rq_flush_dcache_pages(struct request *rq)
{
}
#endif /* ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE */
#endif /* BLK_MQ_H */