From 1011c1b9f2e45ce7c6e38888d2b83936aec38771 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 7 May 2009 22:24:45 +0900 Subject: [PATCH] block: blk_rq_[cur_]_{sectors|bytes}() usage cleanup With the previous changes, the followings are now guaranteed for all requests in any valid state. * blk_rq_sectors() == blk_rq_bytes() >> 9 * blk_rq_cur_sectors() == blk_rq_cur_bytes() >> 9 Clean up accessor usages. Notable changes are * nbd,i2o_block: end_all used instead of explicit byte count * scsi_lib: unnecessary conditional on request type removed [ Impact: cleanup ] Signed-off-by: Tejun Heo Cc: Paul Clements Cc: Pete Zaitcev Cc: Alex Dubov Cc: Markus Lidel Cc: David Woodhouse Cc: James Bottomley Cc: Boaz Harrosh Signed-off-by: Jens Axboe --- drivers/block/floppy.c | 7 +++---- drivers/block/nbd.c | 6 +++--- drivers/block/ub.c | 2 +- drivers/block/z2ram.c | 2 +- drivers/memstick/core/mspro_block.c | 4 ++-- drivers/message/i2o/i2o_block.c | 16 ++++------------ drivers/mtd/mtd_blkdevs.c | 2 +- drivers/sbus/char/jsflash.c | 2 +- drivers/scsi/scsi_lib.c | 7 ++----- 9 files changed, 18 insertions(+), 30 deletions(-) diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 452486283386..1e27ed9208b4 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -2512,8 +2512,7 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2) remaining = current_count_sectors << 9; #ifdef FLOPPY_SANITY_CHECK - if ((remaining >> 9) > blk_rq_sectors(current_req) && - CT(COMMAND) == FD_WRITE) { + if (remaining > blk_rq_bytes(current_req) && CT(COMMAND) == FD_WRITE) { DPRINT("in copy buffer\n"); printk("current_count_sectors=%ld\n", current_count_sectors); printk("remaining=%d\n", remaining >> 9); @@ -2530,7 +2529,7 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2) dma_buffer = floppy_track_buffer + ((fsector_t - buffer_min) << 9); - size = blk_rq_cur_sectors(current_req) << 9; + size = blk_rq_cur_bytes(current_req); rq_for_each_segment(bv, current_req, iter) { if (!remaining) @@ -2879,7 +2878,7 @@ static int make_raw_rw_request(void) printk("write\n"); return 0; } - } else if (raw_cmd->length > blk_rq_sectors(current_req) << 9 || + } else if (raw_cmd->length > blk_rq_bytes(current_req) || current_count_sectors > blk_rq_sectors(current_req)) { DPRINT("buffer overrun in direct transfer\n"); return 0; diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 977a57377930..fad167de23b4 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -110,7 +110,7 @@ static void nbd_end_request(struct request *req) req, error ? "failed" : "done"); spin_lock_irqsave(q->queue_lock, flags); - __blk_end_request(req, error, blk_rq_sectors(req) << 9); + __blk_end_request_all(req, error); spin_unlock_irqrestore(q->queue_lock, flags); } @@ -231,7 +231,7 @@ static int nbd_send_req(struct nbd_device *lo, struct request *req) { int result, flags; struct nbd_request request; - unsigned long size = blk_rq_sectors(req) << 9; + unsigned long size = blk_rq_bytes(req); request.magic = htonl(NBD_REQUEST_MAGIC); request.type = htonl(nbd_cmd(req)); @@ -243,7 +243,7 @@ static int nbd_send_req(struct nbd_device *lo, struct request *req) lo->disk->disk_name, req, nbdcmd_to_ascii(nbd_cmd(req)), (unsigned long long)blk_rq_pos(req) << 9, - blk_rq_sectors(req) << 9); + blk_rq_bytes(req)); result = sock_xmit(lo, 1, &request, sizeof(request), (nbd_cmd(req) == NBD_CMD_WRITE) ? MSG_MORE : 0); if (result <= 0) { diff --git a/drivers/block/ub.c b/drivers/block/ub.c index 1591f61b6c60..40d03cf63f2e 100644 --- a/drivers/block/ub.c +++ b/drivers/block/ub.c @@ -739,7 +739,7 @@ static void ub_cmd_build_block(struct ub_dev *sc, struct ub_lun *lun, cmd->cdb[8] = nblks; cmd->cdb_len = 10; - cmd->len = blk_rq_sectors(rq) * 512; + cmd->len = blk_rq_bytes(rq); } static void ub_cmd_build_packet(struct ub_dev *sc, struct ub_lun *lun, diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c index d4e6b71f514a..6a1383834ecf 100644 --- a/drivers/block/z2ram.c +++ b/drivers/block/z2ram.c @@ -72,7 +72,7 @@ static void do_z2_request(struct request_queue *q) struct request *req; while ((req = elv_next_request(q)) != NULL) { unsigned long start = blk_rq_pos(req) << 9; - unsigned long len = blk_rq_cur_sectors(req) << 9; + unsigned long len = blk_rq_cur_bytes(req); if (start + len > z2ram_size) { printk( KERN_ERR DEVICE_NAME ": bad access: block=%lu, count=%u\n", diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c index 9e600d22f40e..93b2c6185656 100644 --- a/drivers/memstick/core/mspro_block.c +++ b/drivers/memstick/core/mspro_block.c @@ -680,7 +680,7 @@ try_again: t_sec = blk_rq_pos(msb->block_req) << 9; sector_div(t_sec, msb->page_size); - count = blk_rq_sectors(msb->block_req) << 9; + count = blk_rq_bytes(msb->block_req); count /= msb->page_size; param.system = msb->system; @@ -745,7 +745,7 @@ static int mspro_block_complete_req(struct memstick_dev *card, int error) t_len *= msb->page_size; } } else - t_len = blk_rq_sectors(msb->block_req) << 9; + t_len = blk_rq_bytes(msb->block_req); dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error); diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c index 6b61d289d6c9..e153f5d5237d 100644 --- a/drivers/message/i2o/i2o_block.c +++ b/drivers/message/i2o/i2o_block.c @@ -426,15 +426,9 @@ static void i2o_block_end_request(struct request *req, int error, struct request_queue *q = req->q; unsigned long flags; - if (blk_end_request(req, error, nr_bytes)) { - int leftover = (blk_rq_sectors(req) << KERNEL_SECTOR_SHIFT); - - if (blk_pc_request(req)) - leftover = blk_rq_bytes(req); - + if (blk_end_request(req, error, nr_bytes)) if (error) - blk_end_request(req, -EIO, leftover); - } + blk_end_request_all(req, -EIO); spin_lock_irqsave(q->queue_lock, flags); @@ -832,15 +826,13 @@ static int i2o_block_transfer(struct request *req) memcpy(mptr, cmd, 10); mptr += 4; - *mptr++ = - cpu_to_le32(blk_rq_sectors(req) << KERNEL_SECTOR_SHIFT); + *mptr++ = cpu_to_le32(blk_rq_bytes(req)); } else #endif { msg->u.head[1] = cpu_to_le32(cmd | HOST_TID << 12 | tid); *mptr++ = cpu_to_le32(ctl_flags); - *mptr++ = - cpu_to_le32(blk_rq_sectors(req) << KERNEL_SECTOR_SHIFT); + *mptr++ = cpu_to_le32(blk_rq_bytes(req)); *mptr++ = cpu_to_le32((u32) (blk_rq_pos(req) << KERNEL_SECTOR_SHIFT)); *mptr++ = diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 4ea2e67ac97c..50c76a2ca76e 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -48,7 +48,7 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr, char *buf; block = blk_rq_pos(req) << 9 >> tr->blkshift; - nsect = blk_rq_cur_sectors(req) << 9 >> tr->blkshift; + nsect = blk_rq_cur_bytes(req) >> tr->blkshift; buf = req->buffer; diff --git a/drivers/sbus/char/jsflash.c b/drivers/sbus/char/jsflash.c index 2132c906e53a..d56ddaa77036 100644 --- a/drivers/sbus/char/jsflash.c +++ b/drivers/sbus/char/jsflash.c @@ -189,7 +189,7 @@ static void jsfd_do_request(struct request_queue *q) while ((req = elv_next_request(q)) != NULL) { struct jsfd_part *jdp = req->rq_disk->private_data; unsigned long offset = blk_rq_pos(req) << 9; - size_t len = blk_rq_cur_sectors(req) << 9; + size_t len = blk_rq_cur_bytes(req); if ((offset + len) > jdp->dsize) { __blk_end_request_cur(req, -EIO); diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 3d16c70fbde0..ee308f6f7982 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -546,7 +546,7 @@ static struct scsi_cmnd *scsi_end_request(struct scsi_cmnd *cmd, int error, * to queue the remainder of them. */ if (blk_end_request(req, error, bytes)) { - int leftover = blk_rq_sectors(req) << 9; + int leftover = blk_rq_bytes(req); if (blk_pc_request(req)) leftover = req->resid_len; @@ -964,10 +964,7 @@ static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb, count = blk_rq_map_sg(req->q, req, sdb->table.sgl); BUG_ON(count > sdb->table.nents); sdb->table.nents = count; - if (blk_pc_request(req)) - sdb->length = blk_rq_bytes(req); - else - sdb->length = blk_rq_sectors(req) << 9; + sdb->length = blk_rq_bytes(req); return BLKPREP_OK; }