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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-07-25 00:53:35 +0400
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-07-25 00:53:35 +0400
commite27420d046600cd3e4139ea1b6cba59a8b4050eb (patch)
treeaaf60bb6c306d9c1bf75301a86465e7e63920ac3
parent216f9a88feabf5ed574c3aa78447a6bd872910bc (diff)
downloadlinux-e27420d046600cd3e4139ea1b6cba59a8b4050eb.tar.xz
ide-scsi: remove kmalloced struct request
This converts ide-scsi to use blk_get/put_request instead of kmalloc/kfree. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-rw-r--r--drivers/scsi/ide-scsi.c25
1 files changed, 15 insertions, 10 deletions
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 318ef382448f..b40a673985aa 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -207,15 +207,15 @@ static int idescsi_check_condition(ide_drive_t *drive,
/* stuff a sense request in front of our current request */
pc = kzalloc(sizeof(struct ide_atapi_pc), GFP_ATOMIC);
- rq = kmalloc(sizeof(struct request), GFP_ATOMIC);
+ rq = blk_get_request(drive->queue, READ, GFP_ATOMIC);
buf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_ATOMIC);
if (!pc || !rq || !buf) {
kfree(buf);
- kfree(rq);
+ if (rq)
+ blk_put_request(rq);
kfree(pc);
return -ENOMEM;
}
- blk_rq_init(NULL, rq);
rq->special = (char *) pc;
pc->rq = rq;
pc->buf = buf;
@@ -232,6 +232,7 @@ static int idescsi_check_condition(ide_drive_t *drive,
ide_scsi_hex_dump(pc->c, 6);
}
rq->rq_disk = scsi->disk;
+ rq->ref_count++;
memcpy(rq->cmd, pc->c, 12);
ide_do_drive_cmd(drive, rq);
return 0;
@@ -278,7 +279,7 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate, int nrsecs)
SCSI_SENSE_BUFFERSIZE);
kfree(pc->buf);
kfree(pc);
- kfree(rq);
+ blk_put_request(rq);
pc = opc;
rq = pc->rq;
pc->scsi_cmd->result = (CHECK_CONDITION << 1) |
@@ -309,7 +310,7 @@ static int idescsi_end_request (ide_drive_t *drive, int uptodate, int nrsecs)
pc->done(pc->scsi_cmd);
spin_unlock_irqrestore(host->host_lock, flags);
kfree(pc);
- kfree(rq);
+ blk_put_request(rq);
scsi->pc = NULL;
return 0;
}
@@ -583,6 +584,7 @@ static int idescsi_queue (struct scsi_cmnd *cmd,
ide_drive_t *drive = scsi->drive;
struct request *rq = NULL;
struct ide_atapi_pc *pc = NULL;
+ int write = cmd->sc_data_direction == DMA_TO_DEVICE;
if (!drive) {
scmd_printk (KERN_ERR, cmd, "drive not present\n");
@@ -590,7 +592,7 @@ static int idescsi_queue (struct scsi_cmnd *cmd,
}
scsi = drive_to_idescsi(drive);
pc = kmalloc(sizeof(struct ide_atapi_pc), GFP_ATOMIC);
- rq = kmalloc(sizeof(struct request), GFP_ATOMIC);
+ rq = blk_get_request(drive->queue, write, GFP_ATOMIC);
if (rq == NULL || pc == NULL) {
printk (KERN_ERR "ide-scsi: %s: out of memory\n", drive->name);
goto abort;
@@ -620,17 +622,18 @@ static int idescsi_queue (struct scsi_cmnd *cmd,
}
}
- blk_rq_init(NULL, rq);
rq->special = (char *) pc;
rq->cmd_type = REQ_TYPE_SPECIAL;
spin_unlock_irq(host->host_lock);
+ rq->ref_count++;
memcpy(rq->cmd, pc->c, 12);
blk_execute_rq_nowait(drive->queue, scsi->disk, rq, 0, NULL);
spin_lock_irq(host->host_lock);
return 0;
abort:
kfree (pc);
- kfree (rq);
+ if (rq)
+ blk_put_request(rq);
cmd->result = DID_ERROR << 16;
done(cmd);
return 0;
@@ -678,7 +681,9 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd)
if (blk_sense_request(scsi->pc->rq))
kfree(scsi->pc->buf);
- kfree(scsi->pc->rq);
+ /* we need to call blk_put_request twice. */
+ blk_put_request(scsi->pc->rq);
+ blk_put_request(scsi->pc->rq);
kfree(scsi->pc);
scsi->pc = NULL;
@@ -730,7 +735,7 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
kfree(scsi->pc->buf);
kfree(scsi->pc);
scsi->pc = NULL;
- kfree(req);
+ blk_put_request(req);
/* now nuke the drive queue */
while ((req = elv_next_request(drive->queue))) {