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From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: "Martin K . Petersen" <martin.petersen@oracle.com>,
	Oleksii Kurochko <olkuroch@cisco.com>,
	Sagi Grimberg <sagi@grimberg.me>,
	Mike Snitzer <snitzer@redhat.com>,
	Ilya Dryomov <idryomov@gmail.com>,
	Dongsheng Yang <dongsheng.yang@easystack.cn>,
	ceph-devel@vger.kernel.org, dm-devel@redhat.com,
	linux-block@vger.kernel.org, linux-nvme@lists.infradead.org,
	Hannes Reinecke <hare@suse.de>
Subject: [PATCH 3/6] block: add a hard-readonly flag to struct gendisk
Date: Mon,  7 Dec 2020 14:19:15 +0100	[thread overview]
Message-ID: <20201207131918.2252553-4-hch@lst.de> (raw)
In-Reply-To: <20201207131918.2252553-1-hch@lst.de>

Commit 20bd1d026aac ("scsi: sd: Keep disk read-only when re-reading
partition") addressed a long-standing problem with user read-only
policy being overridden as a result of a device-initiated revalidate.
The commit has since been reverted due to a regression that left some
USB devices read-only indefinitely.

To fix the underlying problems with revalidate we need to keep track
of hardware state and user policy separately.

The gendisk has been updated to reflect the current hardware state set
by the device driver. This is done to allow returning the device to
the hardware state once the user clears the BLKROSET flag.

The resulting semantics are as follows:

 - If BLKROSET sets a given partition read-only, that partition will
   remain read-only even if the underlying storage stack initiates a
   revalidate. However, the BLKRRPART ioctl will cause the partition
   table to be dropped and any user policy on partitions will be lost.

 - If BLKROSET has not been set, both the whole disk device and any
   partitions will reflect the current write-protect state of the
   underlying device.

Based on a patch from Martin K. Petersen <martin.petersen@oracle.com>.

Reported-by: Oleksii Kurochko <olkuroch@cisco.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=201221
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
---
 block/blk-core.c        |  2 +-
 block/genhd.c           | 33 +++++++++++++++++++--------------
 block/partitions/core.c |  3 +--
 include/linux/genhd.h   |  6 ++++--
 4 files changed, 25 insertions(+), 19 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index ad041e903b0a8f..ecd68415c6acad 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -693,7 +693,7 @@ static inline bool should_fail_request(struct block_device *part,
 
 static inline bool bio_check_ro(struct bio *bio)
 {
-	if (op_is_write(bio_op(bio)) && bio->bi_bdev->bd_read_only) {
+	if (op_is_write(bio_op(bio)) && bdev_read_only(bio->bi_bdev))
 		char b[BDEVNAME_SIZE];
 
 		if (op_is_flush(bio->bi_opf) && !bio_sectors(bio))
diff --git a/block/genhd.c b/block/genhd.c
index c87013879b8650..878f94727aaa96 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1425,27 +1425,32 @@ static void set_disk_ro_uevent(struct gendisk *gd, int ro)
 	kobject_uevent_env(&disk_to_dev(gd)->kobj, KOBJ_CHANGE, envp);
 }
 
-void set_disk_ro(struct gendisk *disk, int flag)
+/**
+ * set_disk_ro - set a gendisk read-only
+ * @disk:	gendisk to operate on
+ * @ready_only:	%true to set the disk read-only, %false set the disk read/write
+ *
+ * This function is used to indicate whether a given disk device should have its
+ * read-only flag set. set_disk_ro() is typically used by device drivers to
+ * indicate whether the underlying physical device is write-protected.
+ */
+void set_disk_ro(struct gendisk *disk, bool read_only)
 {
-	struct disk_part_iter piter;
-	struct block_device *part;
-
-	if (disk->part0->bd_read_only != flag) {
-		set_disk_ro_uevent(disk, flag);
-		disk->part0->bd_read_only = flag;
+	if (read_only) {
+		if (test_and_set_bit(GD_READ_ONLY, &disk->state))
+			return;
+	} else {
+		if (!test_and_clear_bit(GD_READ_ONLY, &disk->state))
+			return;
 	}
-
-	disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);
-	while ((part = disk_part_iter_next(&piter)))
-		part->bd_read_only = flag;
-	disk_part_iter_exit(&piter);
+	set_disk_ro_uevent(disk, read_only);
 }
-
 EXPORT_SYMBOL(set_disk_ro);
 
 int bdev_read_only(struct block_device *bdev)
 {
-	return bdev->bd_read_only;
+	return bdev->bd_read_only ||
+		test_bit(GD_READ_ONLY, &bdev->bd_disk->state);
 }
 EXPORT_SYMBOL(bdev_read_only);
 
diff --git a/block/partitions/core.c b/block/partitions/core.c
index c88f03ddaefe29..278e2419b163bb 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -194,7 +194,7 @@ static ssize_t part_start_show(struct device *dev,
 static ssize_t part_ro_show(struct device *dev,
 			    struct device_attribute *attr, char *buf)
 {
-	return sprintf(buf, "%d\n", dev_to_bdev(dev)->bd_read_only);
+	return sprintf(buf, "%d\n", bdev_read_only(dev_to_bdev(dev)));
 }
 
 static ssize_t part_alignment_offset_show(struct device *dev,
@@ -348,7 +348,6 @@ static struct block_device *add_partition(struct gendisk *disk, int partno,
 
 	bdev->bd_start_sect = start;
 	bdev_set_nr_sectors(bdev, len);
-	bdev->bd_read_only = get_disk_ro(disk);
 
 	if (info) {
 		err = -ENOMEM;
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index e8821bfe07b955..f364619092cca0 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -152,6 +152,7 @@ struct gendisk {
 	int flags;
 	unsigned long state;
 #define GD_NEED_PART_SCAN		0
+#define GD_READ_ONLY			1
 	struct kobject *slave_dir;
 
 	struct timer_rand_state *random;
@@ -238,11 +239,12 @@ static inline void add_disk_no_queue_reg(struct gendisk *disk)
 extern void del_gendisk(struct gendisk *gp);
 extern struct block_device *bdget_disk(struct gendisk *disk, int partno);
 
-extern void set_disk_ro(struct gendisk *disk, int flag);
+void set_disk_ro(struct gendisk *disk, bool read_only);
 
 static inline int get_disk_ro(struct gendisk *disk)
 {
-	return disk->part0->bd_read_only;
+	return disk->part0->bd_read_only ||
+		test_bit(GD_READ_ONLY, &disk->state);
 }
 
 extern void disk_block_events(struct gendisk *disk);
-- 
2.29.2


WARNING: multiple messages have this Message-ID
From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: Sagi Grimberg <sagi@grimberg.me>,
	Mike Snitzer <snitzer@redhat.com>,
	Oleksii Kurochko <olkuroch@cisco.com>,
	Dongsheng Yang <dongsheng.yang@easystack.cn>,
	linux-block@vger.kernel.org, dm-devel@redhat.com,
	linux-nvme@lists.infradead.org,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	Ilya Dryomov <idryomov@gmail.com>,
	ceph-devel@vger.kernel.org, Hannes Reinecke <hare@suse.de>
Subject: [PATCH 3/6] block: add a hard-readonly flag to struct gendisk
Date: Mon,  7 Dec 2020 14:19:15 +0100	[thread overview]
Message-ID: <20201207131918.2252553-4-hch@lst.de> (raw)
In-Reply-To: <20201207131918.2252553-1-hch@lst.de>

Commit 20bd1d026aac ("scsi: sd: Keep disk read-only when re-reading
partition") addressed a long-standing problem with user read-only
policy being overridden as a result of a device-initiated revalidate.
The commit has since been reverted due to a regression that left some
USB devices read-only indefinitely.

To fix the underlying problems with revalidate we need to keep track
of hardware state and user policy separately.

The gendisk has been updated to reflect the current hardware state set
by the device driver. This is done to allow returning the device to
the hardware state once the user clears the BLKROSET flag.

The resulting semantics are as follows:

 - If BLKROSET sets a given partition read-only, that partition will
   remain read-only even if the underlying storage stack initiates a
   revalidate. However, the BLKRRPART ioctl will cause the partition
   table to be dropped and any user policy on partitions will be lost.

 - If BLKROSET has not been set, both the whole disk device and any
   partitions will reflect the current write-protect state of the
   underlying device.

Based on a patch from Martin K. Petersen <martin.petersen@oracle.com>.

Reported-by: Oleksii Kurochko <olkuroch@cisco.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=201221
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
---
 block/blk-core.c        |  2 +-
 block/genhd.c           | 33 +++++++++++++++++++--------------
 block/partitions/core.c |  3 +--
 include/linux/genhd.h   |  6 ++++--
 4 files changed, 25 insertions(+), 19 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index ad041e903b0a8f..ecd68415c6acad 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -693,7 +693,7 @@ static inline bool should_fail_request(struct block_device *part,
 
 static inline bool bio_check_ro(struct bio *bio)
 {
-	if (op_is_write(bio_op(bio)) && bio->bi_bdev->bd_read_only) {
+	if (op_is_write(bio_op(bio)) && bdev_read_only(bio->bi_bdev))
 		char b[BDEVNAME_SIZE];
 
 		if (op_is_flush(bio->bi_opf) && !bio_sectors(bio))
diff --git a/block/genhd.c b/block/genhd.c
index c87013879b8650..878f94727aaa96 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1425,27 +1425,32 @@ static void set_disk_ro_uevent(struct gendisk *gd, int ro)
 	kobject_uevent_env(&disk_to_dev(gd)->kobj, KOBJ_CHANGE, envp);
 }
 
-void set_disk_ro(struct gendisk *disk, int flag)
+/**
+ * set_disk_ro - set a gendisk read-only
+ * @disk:	gendisk to operate on
+ * @ready_only:	%true to set the disk read-only, %false set the disk read/write
+ *
+ * This function is used to indicate whether a given disk device should have its
+ * read-only flag set. set_disk_ro() is typically used by device drivers to
+ * indicate whether the underlying physical device is write-protected.
+ */
+void set_disk_ro(struct gendisk *disk, bool read_only)
 {
-	struct disk_part_iter piter;
-	struct block_device *part;
-
-	if (disk->part0->bd_read_only != flag) {
-		set_disk_ro_uevent(disk, flag);
-		disk->part0->bd_read_only = flag;
+	if (read_only) {
+		if (test_and_set_bit(GD_READ_ONLY, &disk->state))
+			return;
+	} else {
+		if (!test_and_clear_bit(GD_READ_ONLY, &disk->state))
+			return;
 	}
-
-	disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);
-	while ((part = disk_part_iter_next(&piter)))
-		part->bd_read_only = flag;
-	disk_part_iter_exit(&piter);
+	set_disk_ro_uevent(disk, read_only);
 }
-
 EXPORT_SYMBOL(set_disk_ro);
 
 int bdev_read_only(struct block_device *bdev)
 {
-	return bdev->bd_read_only;
+	return bdev->bd_read_only ||
+		test_bit(GD_READ_ONLY, &bdev->bd_disk->state);
 }
 EXPORT_SYMBOL(bdev_read_only);
 
diff --git a/block/partitions/core.c b/block/partitions/core.c
index c88f03ddaefe29..278e2419b163bb 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -194,7 +194,7 @@ static ssize_t part_start_show(struct device *dev,
 static ssize_t part_ro_show(struct device *dev,
 			    struct device_attribute *attr, char *buf)
 {
-	return sprintf(buf, "%d\n", dev_to_bdev(dev)->bd_read_only);
+	return sprintf(buf, "%d\n", bdev_read_only(dev_to_bdev(dev)));
 }
 
 static ssize_t part_alignment_offset_show(struct device *dev,
@@ -348,7 +348,6 @@ static struct block_device *add_partition(struct gendisk *disk, int partno,
 
 	bdev->bd_start_sect = start;
 	bdev_set_nr_sectors(bdev, len);
-	bdev->bd_read_only = get_disk_ro(disk);
 
 	if (info) {
 		err = -ENOMEM;
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index e8821bfe07b955..f364619092cca0 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -152,6 +152,7 @@ struct gendisk {
 	int flags;
 	unsigned long state;
 #define GD_NEED_PART_SCAN		0
+#define GD_READ_ONLY			1
 	struct kobject *slave_dir;
 
 	struct timer_rand_state *random;
@@ -238,11 +239,12 @@ static inline void add_disk_no_queue_reg(struct gendisk *disk)
 extern void del_gendisk(struct gendisk *gp);
 extern struct block_device *bdget_disk(struct gendisk *disk, int partno);
 
-extern void set_disk_ro(struct gendisk *disk, int flag);
+void set_disk_ro(struct gendisk *disk, bool read_only);
 
 static inline int get_disk_ro(struct gendisk *disk)
 {
-	return disk->part0->bd_read_only;
+	return disk->part0->bd_read_only ||
+		test_bit(GD_READ_ONLY, &disk->state);
 }
 
 extern void disk_block_events(struct gendisk *disk);
-- 
2.29.2


_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme

WARNING: multiple messages have this Message-ID
From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: Sagi Grimberg <sagi@grimberg.me>,
	Mike Snitzer <snitzer@redhat.com>,
	Oleksii Kurochko <olkuroch@cisco.com>,
	Dongsheng Yang <dongsheng.yang@easystack.cn>,
	linux-block@vger.kernel.org, dm-devel@redhat.com,
	linux-nvme@lists.infradead.org,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	Ilya Dryomov <idryomov@gmail.com>,
	ceph-devel@vger.kernel.org
Subject: [dm-devel] [PATCH 3/6] block: add a hard-readonly flag to struct gendisk
Date: Mon,  7 Dec 2020 14:19:15 +0100	[thread overview]
Message-ID: <20201207131918.2252553-4-hch@lst.de> (raw)
In-Reply-To: <20201207131918.2252553-1-hch@lst.de>

Commit 20bd1d026aac ("scsi: sd: Keep disk read-only when re-reading
partition") addressed a long-standing problem with user read-only
policy being overridden as a result of a device-initiated revalidate.
The commit has since been reverted due to a regression that left some
USB devices read-only indefinitely.

To fix the underlying problems with revalidate we need to keep track
of hardware state and user policy separately.

The gendisk has been updated to reflect the current hardware state set
by the device driver. This is done to allow returning the device to
the hardware state once the user clears the BLKROSET flag.

The resulting semantics are as follows:

 - If BLKROSET sets a given partition read-only, that partition will
   remain read-only even if the underlying storage stack initiates a
   revalidate. However, the BLKRRPART ioctl will cause the partition
   table to be dropped and any user policy on partitions will be lost.

 - If BLKROSET has not been set, both the whole disk device and any
   partitions will reflect the current write-protect state of the
   underlying device.

Based on a patch from Martin K. Petersen <martin.petersen@oracle.com>.

Reported-by: Oleksii Kurochko <olkuroch@cisco.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=201221
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
---
 block/blk-core.c        |  2 +-
 block/genhd.c           | 33 +++++++++++++++++++--------------
 block/partitions/core.c |  3 +--
 include/linux/genhd.h   |  6 ++++--
 4 files changed, 25 insertions(+), 19 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index ad041e903b0a8f..ecd68415c6acad 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -693,7 +693,7 @@ static inline bool should_fail_request(struct block_device *part,
 
 static inline bool bio_check_ro(struct bio *bio)
 {
-	if (op_is_write(bio_op(bio)) && bio->bi_bdev->bd_read_only) {
+	if (op_is_write(bio_op(bio)) && bdev_read_only(bio->bi_bdev))
 		char b[BDEVNAME_SIZE];
 
 		if (op_is_flush(bio->bi_opf) && !bio_sectors(bio))
diff --git a/block/genhd.c b/block/genhd.c
index c87013879b8650..878f94727aaa96 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1425,27 +1425,32 @@ static void set_disk_ro_uevent(struct gendisk *gd, int ro)
 	kobject_uevent_env(&disk_to_dev(gd)->kobj, KOBJ_CHANGE, envp);
 }
 
-void set_disk_ro(struct gendisk *disk, int flag)
+/**
+ * set_disk_ro - set a gendisk read-only
+ * @disk:	gendisk to operate on
+ * @ready_only:	%true to set the disk read-only, %false set the disk read/write
+ *
+ * This function is used to indicate whether a given disk device should have its
+ * read-only flag set. set_disk_ro() is typically used by device drivers to
+ * indicate whether the underlying physical device is write-protected.
+ */
+void set_disk_ro(struct gendisk *disk, bool read_only)
 {
-	struct disk_part_iter piter;
-	struct block_device *part;
-
-	if (disk->part0->bd_read_only != flag) {
-		set_disk_ro_uevent(disk, flag);
-		disk->part0->bd_read_only = flag;
+	if (read_only) {
+		if (test_and_set_bit(GD_READ_ONLY, &disk->state))
+			return;
+	} else {
+		if (!test_and_clear_bit(GD_READ_ONLY, &disk->state))
+			return;
 	}
-
-	disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);
-	while ((part = disk_part_iter_next(&piter)))
-		part->bd_read_only = flag;
-	disk_part_iter_exit(&piter);
+	set_disk_ro_uevent(disk, read_only);
 }
-
 EXPORT_SYMBOL(set_disk_ro);
 
 int bdev_read_only(struct block_device *bdev)
 {
-	return bdev->bd_read_only;
+	return bdev->bd_read_only ||
+		test_bit(GD_READ_ONLY, &bdev->bd_disk->state);
 }
 EXPORT_SYMBOL(bdev_read_only);
 
diff --git a/block/partitions/core.c b/block/partitions/core.c
index c88f03ddaefe29..278e2419b163bb 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -194,7 +194,7 @@ static ssize_t part_start_show(struct device *dev,
 static ssize_t part_ro_show(struct device *dev,
 			    struct device_attribute *attr, char *buf)
 {
-	return sprintf(buf, "%d\n", dev_to_bdev(dev)->bd_read_only);
+	return sprintf(buf, "%d\n", bdev_read_only(dev_to_bdev(dev)));
 }
 
 static ssize_t part_alignment_offset_show(struct device *dev,
@@ -348,7 +348,6 @@ static struct block_device *add_partition(struct gendisk *disk, int partno,
 
 	bdev->bd_start_sect = start;
 	bdev_set_nr_sectors(bdev, len);
-	bdev->bd_read_only = get_disk_ro(disk);
 
 	if (info) {
 		err = -ENOMEM;
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index e8821bfe07b955..f364619092cca0 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -152,6 +152,7 @@ struct gendisk {
 	int flags;
 	unsigned long state;
 #define GD_NEED_PART_SCAN		0
+#define GD_READ_ONLY			1
 	struct kobject *slave_dir;
 
 	struct timer_rand_state *random;
@@ -238,11 +239,12 @@ static inline void add_disk_no_queue_reg(struct gendisk *disk)
 extern void del_gendisk(struct gendisk *gp);
 extern struct block_device *bdget_disk(struct gendisk *disk, int partno);
 
-extern void set_disk_ro(struct gendisk *disk, int flag);
+void set_disk_ro(struct gendisk *disk, bool read_only);
 
 static inline int get_disk_ro(struct gendisk *disk)
 {
-	return disk->part0->bd_read_only;
+	return disk->part0->bd_read_only ||
+		test_bit(GD_READ_ONLY, &disk->state);
 }
 
 extern void disk_block_events(struct gendisk *disk);
-- 
2.29.2

--
dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel


  parent reply	other threads:[~2020-12-07 13:23 UTC|newest]

Thread overview: 82+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-07 13:19 split hard read-only vs read-only policy v2 Christoph Hellwig
2020-12-07 13:19 ` [dm-devel] " Christoph Hellwig
2020-12-07 13:19 ` Christoph Hellwig
2020-12-07 13:19 ` [PATCH 1/6] dm: use bdev_read_only to check if a device is read-only Christoph Hellwig
2020-12-07 13:19   ` [dm-devel] " Christoph Hellwig
2020-12-07 13:19   ` Christoph Hellwig
2020-12-08  5:23   ` Martin K. Petersen
2020-12-08  5:23     ` [dm-devel] " Martin K. Petersen
2020-12-08  5:23     ` Martin K. Petersen
2020-12-08  9:59   ` Ming Lei
2020-12-08  9:59     ` [dm-devel] " Ming Lei
2020-12-08  9:59     ` Ming Lei
2020-12-07 13:19 ` [PATCH 2/6] block: remove the NULL bdev check in bdev_read_only Christoph Hellwig
2020-12-07 13:19   ` [dm-devel] " Christoph Hellwig
2020-12-07 13:19   ` Christoph Hellwig
2020-12-08  5:23   ` Martin K. Petersen
2020-12-08  5:23     ` [dm-devel] " Martin K. Petersen
2020-12-08  5:23     ` Martin K. Petersen
2020-12-08 10:06   ` Ming Lei
2020-12-08 10:06     ` [dm-devel] " Ming Lei
2020-12-08 10:06     ` Ming Lei
2020-12-07 13:19 ` Christoph Hellwig [this message]
2020-12-07 13:19   ` [dm-devel] [PATCH 3/6] block: add a hard-readonly flag to struct gendisk Christoph Hellwig
2020-12-07 13:19   ` Christoph Hellwig
2020-12-08  5:24   ` Martin K. Petersen
2020-12-08  5:24     ` [dm-devel] " Martin K. Petersen
2020-12-08  5:24     ` Martin K. Petersen
2020-12-08  5:28   ` Martin K. Petersen
2020-12-08  5:28     ` [dm-devel] " Martin K. Petersen
2020-12-08  5:28     ` Martin K. Petersen
2020-12-08 10:22   ` Ming Lei
2020-12-08 10:22     ` [dm-devel] " Ming Lei
2020-12-08 10:22     ` Ming Lei
2020-12-08 10:57     ` Christoph Hellwig
2020-12-08 10:57       ` [dm-devel] " Christoph Hellwig
2020-12-08 10:57       ` Christoph Hellwig
2020-12-07 13:19 ` [PATCH 4/6] block: propagate BLKROSET on the whole device to all partitions Christoph Hellwig
2020-12-07 13:19   ` [dm-devel] " Christoph Hellwig
2020-12-07 13:19   ` Christoph Hellwig
2020-12-08  5:27   ` Martin K. Petersen
2020-12-08  5:27     ` [dm-devel] " Martin K. Petersen
2020-12-08  5:27     ` Martin K. Petersen
2020-12-08  9:25     ` Christoph Hellwig
2020-12-08  9:25       ` [dm-devel] " Christoph Hellwig
2020-12-08  9:25       ` Christoph Hellwig
2020-12-08 12:41       ` Johannes Thumshirn
2020-12-08 12:41         ` [dm-devel] " Johannes Thumshirn
2020-12-08 12:41         ` Johannes Thumshirn
2020-12-08 10:29   ` Ming Lei
2020-12-08 10:29     ` [dm-devel] " Ming Lei
2020-12-08 10:29     ` Ming Lei
2020-12-08 10:59     ` Christoph Hellwig
2020-12-08 10:59       ` [dm-devel] " Christoph Hellwig
2020-12-08 10:59       ` Christoph Hellwig
2020-12-09  1:23       ` Ming Lei
2020-12-09  1:23         ` [dm-devel] " Ming Lei
2020-12-09  1:23         ` Ming Lei
2020-12-07 13:19 ` [PATCH 5/6] rbd: remove the ->set_read_only method Christoph Hellwig
2020-12-07 13:19   ` [dm-devel] " Christoph Hellwig
2020-12-07 13:19   ` Christoph Hellwig
2020-12-07 14:57   ` Ilya Dryomov
2020-12-07 14:57     ` [dm-devel] " Ilya Dryomov
2020-12-07 14:57     ` Ilya Dryomov
2020-12-08  5:30   ` Martin K. Petersen
2020-12-08  5:30     ` [dm-devel] " Martin K. Petersen
2020-12-08  5:30     ` Martin K. Petersen
2020-12-07 13:19 ` [PATCH 6/6] nvme: allow revalidate to set a namespace read-only Christoph Hellwig
2020-12-07 13:19   ` [dm-devel] " Christoph Hellwig
2020-12-07 13:19   ` Christoph Hellwig
2020-12-07 18:13   ` Keith Busch
2020-12-07 18:13     ` [dm-devel] " Keith Busch
2020-12-07 18:13     ` Keith Busch
2020-12-08  5:29   ` Martin K. Petersen
2020-12-08  5:29     ` [dm-devel] " Martin K. Petersen
2020-12-08  5:29     ` Martin K. Petersen
2020-12-10  7:50 ` split hard read-only vs read-only policy v2 Christoph Hellwig
2020-12-10  7:50   ` [dm-devel] " Christoph Hellwig
2020-12-10  7:50   ` Christoph Hellwig
2020-12-08 16:28 split hard read-only vs read-only policy v3 Christoph Hellwig
2020-12-08 16:28 ` [PATCH 3/6] block: add a hard-readonly flag to struct gendisk Christoph Hellwig
2020-12-08 16:28   ` Christoph Hellwig
2021-01-09 10:42 split hard read-only vs read-only policy v3 (resend) Christoph Hellwig
2021-01-09 10:42 ` [PATCH 3/6] block: add a hard-readonly flag to struct gendisk Christoph Hellwig
2021-01-09 10:42   ` Christoph Hellwig

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