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blk_end_request: changing cpqarray (take 4) 

This patch converts cpqarray to use blk_end_request interfaces.
Related 'ok' arguments are converted to 'error'.

cpqarray is a little bit different from "normal" drivers.
cpqarray directly calls bio_endio() and disk_stat_add()
when completing request.  But those can be replaced with
__end_that_request_first().
After the replacement, request completion procedures of
those drivers become like the following:
    o end_that_request_first()
    o add_disk_randomness()
    o end_that_request_last()
This can be converted to __blk_end_request() by following
the rule (b) mentioned in the patch subject
"[PATCH 01/30] blk_end_request: add new request completion interface".

Cc: Mike Miller <mike.miller@hp.com>
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Kiyoshi Ueda 2007-12-11 17:50:21 -05:00 committed by Jens Axboe
parent 3daeea29f9
commit ea6f06f416
1 changed files with 7 additions and 29 deletions
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36
drivers/block/cpqarray.c
View File

@ -167,7 +167,6 @@ static void start_io(ctlr_info_t *h);
static inline void addQ(cmdlist_t **Qptr, cmdlist_t *c);
static inline cmdlist_t *removeQ(cmdlist_t **Qptr, cmdlist_t *c);
static inline void complete_buffers(struct bio *bio, int ok);
static inline void complete_command(cmdlist_t *cmd, int timeout);
static irqreturn_t do_ida_intr(int irq, void *dev_id);
@ -980,26 +979,13 @@ static void start_io(ctlr_info_t *h)
}
}
static inline void complete_buffers(struct bio *bio, int ok)
{
struct bio *xbh;
while (bio) {
xbh = bio->bi_next;
bio->bi_next = NULL;
bio_endio(bio, ok ? 0 : -EIO);
bio = xbh;
}
}
/*
* Mark all buffers that cmd was responsible for
*/
static inline void complete_command(cmdlist_t *cmd, int timeout)
{
struct request *rq = cmd->rq;
int ok=1;
int error = 0;
int i, ddir;
if (cmd->req.hdr.rcode & RCODE_NONFATAL &&
@ -1011,16 +997,17 @@ static inline void complete_command(cmdlist_t *cmd, int timeout)
if (cmd->req.hdr.rcode & RCODE_FATAL) {
printk(KERN_WARNING "Fatal error on ida/c%dd%d\n",
cmd->ctlr, cmd->hdr.unit);
ok = 0;
error = -EIO;
}
if (cmd->req.hdr.rcode & RCODE_INVREQ) {
printk(KERN_WARNING "Invalid request on ida/c%dd%d = (cmd=%x sect=%d cnt=%d sg=%d ret=%x)\n",
cmd->ctlr, cmd->hdr.unit, cmd->req.hdr.cmd,
cmd->req.hdr.blk, cmd->req.hdr.blk_cnt,
cmd->req.hdr.sg_cnt, cmd->req.hdr.rcode);
ok = 0;
error = -EIO;
}
if (timeout) ok = 0;
if (timeout)
error = -EIO;
/* unmap the DMA mapping for all the scatter gather elements */
if (cmd->req.hdr.cmd == IDA_READ)
ddir = PCI_DMA_FROMDEVICE;
@ -1030,18 +1017,9 @@ static inline void complete_command(cmdlist_t *cmd, int timeout)
pci_unmap_page(hba[cmd->ctlr]->pci_dev, cmd->req.sg[i].addr,
cmd->req.sg[i].size, ddir);
complete_buffers(rq->bio, ok);
if (blk_fs_request(rq)) {
const int rw = rq_data_dir(rq);
disk_stat_add(rq->rq_disk, sectors[rw], rq->nr_sectors);
}
add_disk_randomness(rq->rq_disk);
DBGPX(printk("Done with %p\n", rq););
end_that_request_last(rq, ok ? 1 : -EIO);
if (__blk_end_request(rq, error, blk_rq_bytes(rq)))
BUG();
}
/*