From: Bart Van Assche <bvanassche@acm.org>
To: James Bottomley <jbottomley@parallels.com>
Cc: Mike Christie <michaelc@cs.wisc.edu>,
Hannes Reinecke <hare@suse.de>,
David Milburn <dmilburn@redhat.com>,
linux-scsi <linux-scsi@vger.kernel.org>
Subject: [PATCH 1/7] Introduce scsi_device_being_removed()
Date: Tue, 20 Aug 2013 14:06:35 +0200 [thread overview]
Message-ID: <52135BCB.9000902@acm.org> (raw)
In-Reply-To: <52135B99.2000102@acm.org>
Introduce the helper function scsi_device_being_removed(). This patch
does not change any functionality.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Hannes Reinecke <hare@suse.de>
Cc: Mike Christie <michaelc@cs.wisc.edu>
---
drivers/scsi/device_handler/scsi_dh.c | 7 ++-----
include/scsi/scsi_device.h | 5 +++++
2 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/device_handler/scsi_dh.c b/drivers/scsi/device_handler/scsi_dh.c
index 33e422e..78b3ddb 100644
--- a/drivers/scsi/device_handler/scsi_dh.c
+++ b/drivers/scsi/device_handler/scsi_dh.c
@@ -156,8 +156,7 @@ store_dh_state(struct device *dev, struct device_attribute *attr,
struct scsi_device_handler *scsi_dh;
int err = -EINVAL;
- if (sdev->sdev_state == SDEV_CANCEL ||
- sdev->sdev_state == SDEV_DEL)
+ if (scsi_device_being_removed(sdev))
return -ENODEV;
if (!sdev->scsi_dh_data) {
@@ -400,9 +399,7 @@ int scsi_dh_activate(struct request_queue *q, activate_complete fn, void *data)
if (sdev->scsi_dh_data)
scsi_dh = sdev->scsi_dh_data->scsi_dh;
dev = get_device(&sdev->sdev_gendev);
- if (!scsi_dh || !dev ||
- sdev->sdev_state == SDEV_CANCEL ||
- sdev->sdev_state == SDEV_DEL)
+ if (!scsi_dh || !dev || scsi_device_being_removed(sdev))
err = SCSI_DH_NOSYS;
if (sdev->sdev_state == SDEV_OFFLINE)
err = SCSI_DH_DEV_OFFLINED;
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index a44954c..69540bf 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -455,6 +455,11 @@ static inline int scsi_device_created(struct scsi_device *sdev)
return sdev->sdev_state == SDEV_CREATED ||
sdev->sdev_state == SDEV_CREATED_BLOCK;
}
+static inline int scsi_device_being_removed(struct scsi_device *sdev)
+{
+ return sdev->sdev_state == SDEV_CANCEL ||
+ sdev->sdev_state == SDEV_DEL;
+}
/* accessor functions for the SCSI parameters */
static inline int scsi_device_sync(struct scsi_device *sdev)
--
1.7.10.4
next prev parent reply other threads:[~2013-08-20 12:06 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-20 12:05 SCSI core patches for kernel 3.12 Bart Van Assche
2013-08-20 12:06 ` Bart Van Assche [this message]
2013-09-01 16:43 ` [PATCH 1/7] Introduce scsi_device_being_removed() Christoph Hellwig
2013-08-20 12:07 ` [PATCH 2/7] Rework scsi_internal_device_unblock() Bart Van Assche
2013-09-01 16:44 ` Christoph Hellwig
2013-08-20 12:08 ` [PATCH 3/7] Avoid re-enabling I/O after the transport became offline Bart Van Assche
2013-09-01 16:46 ` Christoph Hellwig
2013-08-20 12:08 ` [PATCH 4/7] Disallow changing the device state via sysfs into "deleted" Bart Van Assche
2013-09-01 16:49 ` Christoph Hellwig
2013-09-02 18:59 ` Bart Van Assche
2013-09-02 19:06 ` Christoph Hellwig
2013-09-02 19:12 ` Bart Van Assche
2013-09-02 19:17 ` Christoph Hellwig
2013-08-20 12:09 ` [PATCH 5/7] Micro-optimize scsi_request_fn() Bart Van Assche
2013-09-01 16:50 ` Christoph Hellwig
2013-08-20 12:09 ` [PATCH 6/7] Rename scsi_get_command() and scsi_put_command() Bart Van Assche
2013-08-20 12:10 ` [PATCH 7/7] Micro-optimize scsi_next_command() Bart Van Assche
2013-09-01 17:06 ` Christoph Hellwig
2013-09-01 17:08 ` [PATCH 8/7] scsi: cleanup scsi_requeue_command Christoph Hellwig
2013-08-20 16:11 ` SCSI core patches for kernel 3.12 Nicholas A. Bellinger
2013-08-20 16:15 ` Bart Van Assche
2013-08-20 17:04 ` Nicholas A. Bellinger
2013-08-20 18:00 ` Bart Van Assche
2013-08-20 20:38 ` Nicholas A. Bellinger
2013-08-21 6:48 ` Christoph Hellwig
2013-08-21 7:35 ` Nicholas A. Bellinger
2013-10-02 7:40 ` Christoph Hellwig
2013-10-02 15:15 ` James Bottomley
2013-10-02 16:17 ` Christoph Hellwig
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