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authorTejun Heo <tj@kernel.org>2009-05-07 15:24:45 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-05-11 09:50:55 +0200
commit1011c1b9f2e45ce7c6e38888d2b83936aec38771 (patch)
tree63f1f8f604631f37df9917a941531de0148f8379 /drivers/block
parentblock: hide request sector and data_len (diff)
downloadlinux-1011c1b9f2e45ce7c6e38888d2b83936aec38771.tar.xz
linux-1011c1b9f2e45ce7c6e38888d2b83936aec38771.zip
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 <tj@kernel.org> Cc: Paul Clements <paul.clements@steeleye.com> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/floppy.c7
-rw-r--r--drivers/block/nbd.c6
-rw-r--r--drivers/block/ub.c2
-rw-r--r--drivers/block/z2ram.c2
4 files changed, 8 insertions, 9 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",