jsflash: handle highmem pages
Just kmap the bio single page payload before processing it. (and yes, now highmem on sparc32 anyway, but kmap_(un)map atomic are nops, so this gives the right example) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>hifive-unleashed-5.1
parent
ad180f6f71
commit
37a5b5c618
|
@ -215,6 +215,7 @@ static void jsfd_request(void)
|
||||||
unsigned long offset = blk_rq_pos(req) << 9;
|
unsigned long offset = blk_rq_pos(req) << 9;
|
||||||
size_t len = blk_rq_cur_bytes(req);
|
size_t len = blk_rq_cur_bytes(req);
|
||||||
blk_status_t err = BLK_STS_IOERR;
|
blk_status_t err = BLK_STS_IOERR;
|
||||||
|
void *p;
|
||||||
|
|
||||||
if ((offset + len) > jdp->dsize)
|
if ((offset + len) > jdp->dsize)
|
||||||
goto end;
|
goto end;
|
||||||
|
@ -229,7 +230,9 @@ static void jsfd_request(void)
|
||||||
goto end;
|
goto end;
|
||||||
}
|
}
|
||||||
|
|
||||||
jsfd_read(bio_data(req->bio), jdp->dbase + offset, len);
|
p = kmap_atomic(bio_page(bio)) + bio_offset(bio);
|
||||||
|
jsfd_read(p, jdp->dbase + offset, len);
|
||||||
|
kunmap_atomic(p);
|
||||||
err = BLK_STS_OK;
|
err = BLK_STS_OK;
|
||||||
end:
|
end:
|
||||||
if (!__blk_end_request_cur(req, err))
|
if (!__blk_end_request_cur(req, err))
|
||||||
|
@ -592,7 +595,6 @@ static int jsfd_init(void)
|
||||||
put_disk(disk);
|
put_disk(disk);
|
||||||
goto out;
|
goto out;
|
||||||
}
|
}
|
||||||
blk_queue_bounce_limit(disk->queue, BLK_BOUNCE_HIGH);
|
|
||||||
jsfd_disk[i] = disk;
|
jsfd_disk[i] = disk;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue