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[PATCH] libata-hp-prep: add ata_aux_wq

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It's best to run ATA hotplug from EH but attaching SCSI devices needs
working EH.  ata_aux_wq is used to give SCSI hotplug operations a
separate context.

Signed-off-by: Tejun Heo <htejun@gmail.com>
This commit is contained in:
Tejun Heo 2006-05-31 18:27:42 +09:00
parent 3edebac41b
commit 453b07accb
2 changed files with 10 additions and 0 deletions
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9
drivers/scsi/libata-core.c
View file

@ -69,6 +69,8 @@ static void ata_dev_xfermask(struct ata_device *dev);
static unsigned int ata_unique_id = 1;
static struct workqueue_struct *ata_wq;
struct workqueue_struct *ata_aux_wq;
int atapi_enabled = 1;
module_param(atapi_enabled, int, 0444);
MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)");
@ -5623,6 +5625,12 @@ static int __init ata_init(void)
if (!ata_wq)
return -ENOMEM;
ata_aux_wq = create_singlethread_workqueue("ata_aux");
if (!ata_aux_wq) {
destroy_workqueue(ata_wq);
return -ENOMEM;
}
printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n");
return 0;
}
@ -5630,6 +5638,7 @@ static int __init ata_init(void)
static void __exit ata_exit(void)
{
destroy_workqueue(ata_wq);
destroy_workqueue(ata_aux_wq);
}
module_init(ata_init);

1
drivers/scsi/libata.h
View file

@ -39,6 +39,7 @@ struct ata_scsi_args {
};
/* libata-core.c */
extern struct workqueue_struct *ata_aux_wq;
extern int atapi_enabled;
extern int atapi_dmadir;
extern int libata_fua;