From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>, Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Andrew Morton <akpm@linux-foundation.org>,
Geoff Levand <geoff@infradead.org>,
Ilya Dryomov <idryomov@gmail.com>,
Dongsheng Yang <dongsheng.yang@easystack.cn>,
Mike Snitzer <snitzer@redhat.com>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Ira Weiny <ira.weiny@intel.com>,
dm-devel@redhat.com, linux-mips@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, ceph-devel@vger.kernel.org,
linux-arch@vger.kernel.org,
"Martin K . Petersen" <martin.petersen@oracle.com>
Subject: [PATCH 08/15] ps3disk: use memcpy_{from,to}_bvec
Date: Tue, 27 Jul 2021 07:56:39 +0200 [thread overview]
Message-ID: <20210727055646.118787-9-hch@lst.de> (raw)
In-Reply-To: <20210727055646.118787-1-hch@lst.de>
Use the bvec helpers instead of open coding the copy.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Tested-by: Geoff Levand <geoff@infradead.org>
---
drivers/block/ps3disk.c | 18 ++----------------
1 file changed, 2 insertions(+), 16 deletions(-)
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index f374ea2c67ce..8d51efbe045d 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -83,26 +83,12 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev,
unsigned int offset = 0;
struct req_iterator iter;
struct bio_vec bvec;
- unsigned int i = 0;
- size_t size;
- void *buf;
rq_for_each_segment(bvec, req, iter) {
- unsigned long flags;
- dev_dbg(&dev->sbd.core, "%s:%u: bio %u: %u sectors from %llu\n",
- __func__, __LINE__, i, bio_sectors(iter.bio),
- iter.bio->bi_iter.bi_sector);
-
- size = bvec.bv_len;
- buf = bvec_kmap_irq(&bvec, &flags);
if (gather)
- memcpy(dev->bounce_buf+offset, buf, size);
+ memcpy_from_bvec(dev->bounce_buf + offset, &bvec);
else
- memcpy(buf, dev->bounce_buf+offset, size);
- offset += size;
- flush_kernel_dcache_page(bvec.bv_page);
- bvec_kunmap_irq(buf, &flags);
- i++;
+ memcpy_to_bvec(&bvec, dev->bounce_buf + offset);
}
}
--
2.30.2
next prev parent reply other threads:[~2021-07-27 6:12 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 5:56 switch the block layer to use kmap_local_page v3 Christoph Hellwig
2021-07-27 5:56 ` [PATCH 01/15] MIPS: don't include <linux/genhd.h> in <asm/mach-rc32434/rb.h> Christoph Hellwig
2021-07-27 5:56 ` [PATCH 02/15] bvec: fix the include guards for bvec.h Christoph Hellwig
2021-07-27 5:56 ` [PATCH 03/15] bvec: add a bvec_kmap_local helper Christoph Hellwig
2021-07-27 5:56 ` [PATCH 04/15] bvec: add memcpy_{from,to}_bvec and memzero_bvec helper Christoph Hellwig
2021-07-27 5:56 ` [PATCH 05/15] block: use memzero_page in zero_fill_bio Christoph Hellwig
2021-07-27 5:56 ` [PATCH 06/15] rbd: use memzero_bvec Christoph Hellwig
2021-07-27 5:56 ` [PATCH 07/15] dm-writecache: use bvec_kmap_local instead of bvec_kmap_irq Christoph Hellwig
2021-07-27 5:56 ` Christoph Hellwig [this message]
2021-07-27 5:56 ` [PATCH 09/15] block: remove bvec_kmap_irq and bvec_kunmap_irq Christoph Hellwig
2021-07-27 5:56 ` [PATCH 10/15] block: rewrite bio_copy_data_iter to use bvec_kmap_local and memcpy_to_bvec Christoph Hellwig
2021-07-27 5:56 ` [PATCH 11/15] block: use memcpy_to_bvec in copy_to_high_bio_irq Christoph Hellwig
2021-07-27 5:56 ` [PATCH 12/15] block: use memcpy_from_bvec in bio_copy_kern_endio_read Christoph Hellwig
2021-07-27 5:56 ` [PATCH 13/15] block: use memcpy_from_bvec in __blk_queue_bounce Christoph Hellwig
2021-07-27 5:56 ` [PATCH 14/15] block: use bvec_kmap_local in t10_pi_type1_{prepare,complete} Christoph Hellwig
2021-07-27 5:56 ` [PATCH 15/15] block: use bvec_kmap_local in bio_integrity_process Christoph Hellwig
2021-07-28 1:31 ` switch the block layer to use kmap_local_page v3 Jens Axboe
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