Re: [PATCH 12/14] bdi: replace BDI_CAP_STABLE_WRITES with a queue and a sb flag
Reviewed-by: Johannes Thumshirn
[PATCH 12/14] bdi: replace BDI_CAP_STABLE_WRITES with a queue and a sb flag
The BDI_CAP_STABLE_WRITES is one of the few bits of information in the
backing_dev_info shared between the block drivers and the writeback code.
To help untangling the dependency replace it with a queue flag and a
superblock flag derived from it. This also helps with the case of e.g.
a file system requiring stable writes due to its own checksumming, but
not forcing it on other users of the block device like the swap code.
One downside is that we can't support the stable_pages_required bdi
attribute in sysfs anymore. It is replaced with a queue attribute, that
can also be made writable for easier testing.
Signed-off-by: Christoph Hellwig
---
block/blk-integrity.c | 4 ++--
block/blk-mq-debugfs.c| 1 +
block/blk-sysfs.c | 2 ++
drivers/block/rbd.c | 2 +-
drivers/block/zram/zram_drv.c | 2 +-
drivers/md/dm-table.c | 6 +++---
drivers/md/raid5.c| 8
drivers/mmc/core/queue.c | 3 +--
drivers/nvme/host/core.c | 3 +--
drivers/nvme/host/multipath.c | 10 +++---
drivers/scsi/iscsi_tcp.c | 4 ++--
fs/super.c| 2 ++
include/linux/backing-dev.h | 6 --
include/linux/blkdev.h| 3 +++
include/linux/fs.h| 1 +
mm/backing-dev.c | 6 ++
mm/page-writeback.c | 2 +-
mm/swapfile.c | 2 +-
18 files changed, 31 insertions(+), 36 deletions(-)
diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index c03705cbb9c9f2..2b36a8f9b81390 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -408,7 +408,7 @@ void blk_integrity_register(struct gendisk *disk, struct
blk_integrity *template
bi->tuple_size = template->tuple_size;
bi->tag_size = template->tag_size;
- disk->queue->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue);
#ifdef CONFIG_BLK_INLINE_ENCRYPTION
if (disk->queue->ksm) {
@@ -428,7 +428,7 @@ EXPORT_SYMBOL(blk_integrity_register);
*/
void blk_integrity_unregister(struct gendisk *disk)
{
- disk->queue->backing_dev_info->capabilities &= ~BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, disk->queue);
memset(>queue->integrity, 0, sizeof(struct blk_integrity));
}
EXPORT_SYMBOL(blk_integrity_unregister);
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index 3f09bcb8a6fd7e..5a7d870eff2f89 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -116,6 +116,7 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(SAME_FORCE),
QUEUE_FLAG_NAME(DEAD),
QUEUE_FLAG_NAME(INIT_DONE),
+ QUEUE_FLAG_NAME(STABLE_WRITES),
QUEUE_FLAG_NAME(POLL),
QUEUE_FLAG_NAME(WC),
QUEUE_FLAG_NAME(FUA),
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 9bb4e42fb73265..4a3799ed33f775 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -291,6 +291,7 @@ static struct queue_sysfs_entry queue_##_name##_entry = {
\
QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1);
QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0);
QUEUE_SYSFS_BIT_FNS(iostats, IO_STAT, 0);
+QUEUE_SYSFS_BIT_FNS(stable_writes, STABLE_WRITES, 0);
#undef QUEUE_SYSFS_BIT_FNS
static ssize_t queue_zoned_show(struct request_queue *q, char *page)
@@ -645,6 +646,7 @@ static struct attribute *queue_attrs[] = {
_nomerges_entry.attr,
_rq_affinity_entry.attr,
_iostats_entry.attr,
+ _stable_writes_entry.attr,
_random_entry.attr,
_poll_entry.attr,
_wc_entry.attr,
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4f61e920946144..4a8515acccb3bf 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -5022,7 +5022,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
}
if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC))
- q->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q);
/*
* disk_release() expects a queue ref from add_disk() and will
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index d73ddf018fa65f..e6ed9c9f500a42 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1954,7 +1954,7 @@ static int zram_add(void)
if (ZRAM_LOGICAL_BLOCK_SIZE == PAGE_SIZE)
blk_queue_max_write_zeroes_sectors(zram->disk->queue, UINT_MAX);
- zram->disk->queue->backing_dev_info->capabilities |=
BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, zram->disk->queue);
device_add_disk(NULL, zram->disk, zram_disk_attr_groups);
strlcpy(zram->compressor, default_compressor, sizeof(zram->compressor));
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 324a42ed2f8894..e1adec51cb5b41 100644
--- a/drivers/md/dm-table.c
+++
[PATCH 12/14] bdi: replace BDI_CAP_STABLE_WRITES with a queue and a sb flag
The BDI_CAP_STABLE_WRITES is one of the few bits of information in the
backing_dev_info shared between the block drivers and the writeback code.
To help untangling the dependency replace it with a queue flag and a
superblock flag derived from it. This also helps with the case of e.g.
a file system requiring stable writes due to its own checksumming, but
not forcing it on other users of the block device like the swap code.
One downside is that we can't support the stable_pages_required bdi
attribute in sysfs anymore. It is replaced with a queue attribute, that
can also be made writable for easier testing.
Signed-off-by: Christoph Hellwig
---
block/blk-integrity.c | 4 ++--
block/blk-mq-debugfs.c| 1 +
block/blk-sysfs.c | 2 ++
drivers/block/rbd.c | 2 +-
drivers/block/zram/zram_drv.c | 2 +-
drivers/md/dm-table.c | 6 +++---
drivers/md/raid5.c| 8
drivers/mmc/core/queue.c | 3 +--
drivers/nvme/host/core.c | 3 +--
drivers/nvme/host/multipath.c | 10 +++---
drivers/scsi/iscsi_tcp.c | 4 ++--
fs/super.c| 2 ++
include/linux/backing-dev.h | 6 --
include/linux/blkdev.h| 3 +++
include/linux/fs.h| 1 +
mm/backing-dev.c | 6 ++
mm/page-writeback.c | 2 +-
mm/swapfile.c | 2 +-
18 files changed, 31 insertions(+), 36 deletions(-)
diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index c03705cbb9c9f2..2b36a8f9b81390 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -408,7 +408,7 @@ void blk_integrity_register(struct gendisk *disk, struct
blk_integrity *template
bi->tuple_size = template->tuple_size;
bi->tag_size = template->tag_size;
- disk->queue->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue);
#ifdef CONFIG_BLK_INLINE_ENCRYPTION
if (disk->queue->ksm) {
@@ -428,7 +428,7 @@ EXPORT_SYMBOL(blk_integrity_register);
*/
void blk_integrity_unregister(struct gendisk *disk)
{
- disk->queue->backing_dev_info->capabilities &= ~BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, disk->queue);
memset(>queue->integrity, 0, sizeof(struct blk_integrity));
}
EXPORT_SYMBOL(blk_integrity_unregister);
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index 3f09bcb8a6fd7e..5a7d870eff2f89 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -116,6 +116,7 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(SAME_FORCE),
QUEUE_FLAG_NAME(DEAD),
QUEUE_FLAG_NAME(INIT_DONE),
+ QUEUE_FLAG_NAME(STABLE_WRITES),
QUEUE_FLAG_NAME(POLL),
QUEUE_FLAG_NAME(WC),
QUEUE_FLAG_NAME(FUA),
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 9bb4e42fb73265..4a3799ed33f775 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -291,6 +291,7 @@ static struct queue_sysfs_entry queue_##_name##_entry = {
\
QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1);
QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0);
QUEUE_SYSFS_BIT_FNS(iostats, IO_STAT, 0);
+QUEUE_SYSFS_BIT_FNS(stable_writes, STABLE_WRITES, 0);
#undef QUEUE_SYSFS_BIT_FNS
static ssize_t queue_zoned_show(struct request_queue *q, char *page)
@@ -645,6 +646,7 @@ static struct attribute *queue_attrs[] = {
_nomerges_entry.attr,
_rq_affinity_entry.attr,
_iostats_entry.attr,
+ _stable_writes_entry.attr,
_random_entry.attr,
_poll_entry.attr,
_wc_entry.attr,
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4f61e920946144..4a8515acccb3bf 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -5022,7 +5022,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
}
if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC))
- q->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q);
/*
* disk_release() expects a queue ref from add_disk() and will
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index d73ddf018fa65f..e6ed9c9f500a42 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1954,7 +1954,7 @@ static int zram_add(void)
if (ZRAM_LOGICAL_BLOCK_SIZE == PAGE_SIZE)
blk_queue_max_write_zeroes_sectors(zram->disk->queue, UINT_MAX);
- zram->disk->queue->backing_dev_info->capabilities |=
BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, zram->disk->queue);
device_add_disk(NULL, zram->disk, zram_disk_attr_groups);
strlcpy(zram->compressor, default_compressor, sizeof(zram->compressor));
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 324a42ed2f8894..e1adec51cb5b41 100644
--- a/drivers/md/dm-table.c
+++
[PATCH 12/14] bdi: replace BDI_CAP_STABLE_WRITES with a queue and a sb flag
The BDI_CAP_STABLE_WRITES is one of the few bits of information in the
backing_dev_info shared between the block drivers and the writeback code.
To help untangling the dependency replace it with a queue flag and a
superblock flag derived from it. This also helps with the case of e.g.
a file system requiring stable writes due to its own checksumming, but
not forcing it on other users of the block device like the swap code.
One downside is that we can't support the stable_pages_required bdi
attribute in sysfs anymore. It is replaced with a queue attribute, that
can also be made writable for easier testing.
Signed-off-by: Christoph Hellwig
---
block/blk-integrity.c | 4 ++--
block/blk-mq-debugfs.c| 1 +
block/blk-sysfs.c | 2 ++
drivers/block/rbd.c | 2 +-
drivers/block/zram/zram_drv.c | 2 +-
drivers/md/dm-table.c | 6 +++---
drivers/md/raid5.c| 8
drivers/mmc/core/queue.c | 3 +--
drivers/nvme/host/core.c | 3 +--
drivers/nvme/host/multipath.c | 10 +++---
drivers/scsi/iscsi_tcp.c | 4 ++--
fs/super.c| 2 ++
include/linux/backing-dev.h | 6 --
include/linux/blkdev.h| 3 +++
include/linux/fs.h| 1 +
mm/backing-dev.c | 6 ++
mm/page-writeback.c | 2 +-
mm/swapfile.c | 2 +-
18 files changed, 31 insertions(+), 36 deletions(-)
diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index c03705cbb9c9f2..2b36a8f9b81390 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -408,7 +408,7 @@ void blk_integrity_register(struct gendisk *disk, struct
blk_integrity *template
bi->tuple_size = template->tuple_size;
bi->tag_size = template->tag_size;
- disk->queue->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue);
#ifdef CONFIG_BLK_INLINE_ENCRYPTION
if (disk->queue->ksm) {
@@ -428,7 +428,7 @@ EXPORT_SYMBOL(blk_integrity_register);
*/
void blk_integrity_unregister(struct gendisk *disk)
{
- disk->queue->backing_dev_info->capabilities &= ~BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, disk->queue);
memset(>queue->integrity, 0, sizeof(struct blk_integrity));
}
EXPORT_SYMBOL(blk_integrity_unregister);
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index 3f09bcb8a6fd7e..5a7d870eff2f89 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -116,6 +116,7 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(SAME_FORCE),
QUEUE_FLAG_NAME(DEAD),
QUEUE_FLAG_NAME(INIT_DONE),
+ QUEUE_FLAG_NAME(STABLE_WRITES),
QUEUE_FLAG_NAME(POLL),
QUEUE_FLAG_NAME(WC),
QUEUE_FLAG_NAME(FUA),
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 9bb4e42fb73265..4a3799ed33f775 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -291,6 +291,7 @@ static struct queue_sysfs_entry queue_##_name##_entry = {
\
QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1);
QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0);
QUEUE_SYSFS_BIT_FNS(iostats, IO_STAT, 0);
+QUEUE_SYSFS_BIT_FNS(stable_writes, STABLE_WRITES, 0);
#undef QUEUE_SYSFS_BIT_FNS
static ssize_t queue_zoned_show(struct request_queue *q, char *page)
@@ -645,6 +646,7 @@ static struct attribute *queue_attrs[] = {
_nomerges_entry.attr,
_rq_affinity_entry.attr,
_iostats_entry.attr,
+ _stable_writes_entry.attr,
_random_entry.attr,
_poll_entry.attr,
_wc_entry.attr,
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4f61e920946144..4a8515acccb3bf 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -5022,7 +5022,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
}
if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC))
- q->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q);
/*
* disk_release() expects a queue ref from add_disk() and will
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index d73ddf018fa65f..e6ed9c9f500a42 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1954,7 +1954,7 @@ static int zram_add(void)
if (ZRAM_LOGICAL_BLOCK_SIZE == PAGE_SIZE)
blk_queue_max_write_zeroes_sectors(zram->disk->queue, UINT_MAX);
- zram->disk->queue->backing_dev_info->capabilities |=
BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, zram->disk->queue);
device_add_disk(NULL, zram->disk, zram_disk_attr_groups);
strlcpy(zram->compressor, default_compressor, sizeof(zram->compressor));
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 324a42ed2f8894..e1adec51cb5b41 100644
--- a/drivers/md/dm-table.c
+++
[PATCH 12/14] bdi: replace BDI_CAP_STABLE_WRITES with a queue and a sb flag
The BDI_CAP_STABLE_WRITES is one of the few bits of information in the
backing_dev_info shared between the block drivers and the writeback code.
To help untangling the dependency replace it with a queue flag and a
superblock flag derived from it. This also helps with the case of e.g.
a file system requiring stable writes due to its own checksumming, but
not forcing it on other users of the block device like the swap code.
One downside is that we can't support the stable_pages_required bdi
attribute in sysfs anymore. It is replaced with a queue attribute, that
can also be made writable for easier testing.
Signed-off-by: Christoph Hellwig
---
block/blk-integrity.c | 4 ++--
block/blk-mq-debugfs.c| 1 +
block/blk-sysfs.c | 2 ++
drivers/block/rbd.c | 2 +-
drivers/block/zram/zram_drv.c | 2 +-
drivers/md/dm-table.c | 6 +++---
drivers/md/raid5.c| 8
drivers/mmc/core/queue.c | 3 +--
drivers/nvme/host/core.c | 3 +--
drivers/nvme/host/multipath.c | 9 +++--
drivers/scsi/iscsi_tcp.c | 4 ++--
fs/super.c| 2 ++
include/linux/backing-dev.h | 6 --
include/linux/blkdev.h| 3 +++
include/linux/fs.h| 1 +
mm/backing-dev.c | 6 ++
mm/page-writeback.c | 2 +-
mm/swapfile.c | 2 +-
18 files changed, 31 insertions(+), 35 deletions(-)
diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index c03705cbb9c9f2..2b36a8f9b81390 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -408,7 +408,7 @@ void blk_integrity_register(struct gendisk *disk, struct
blk_integrity *template
bi->tuple_size = template->tuple_size;
bi->tag_size = template->tag_size;
- disk->queue->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue);
#ifdef CONFIG_BLK_INLINE_ENCRYPTION
if (disk->queue->ksm) {
@@ -428,7 +428,7 @@ EXPORT_SYMBOL(blk_integrity_register);
*/
void blk_integrity_unregister(struct gendisk *disk)
{
- disk->queue->backing_dev_info->capabilities &= ~BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, disk->queue);
memset(>queue->integrity, 0, sizeof(struct blk_integrity));
}
EXPORT_SYMBOL(blk_integrity_unregister);
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index 439b7c217638b5..40ea02e44028d7 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -116,6 +116,7 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(SAME_FORCE),
QUEUE_FLAG_NAME(DEAD),
QUEUE_FLAG_NAME(INIT_DONE),
+ QUEUE_FLAG_NAME(STABLE_WRITES),
QUEUE_FLAG_NAME(POLL),
QUEUE_FLAG_NAME(WC),
QUEUE_FLAG_NAME(FUA),
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 9fa69133d1501a..c218e7aa0c3e83 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -291,6 +291,7 @@ static struct queue_sysfs_entry queue_##_name##_entry = {
\
QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1);
QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0);
QUEUE_SYSFS_BIT_FNS(iostats, IO_STAT, 0);
+QUEUE_SYSFS_BIT_FNS(stable_writes, STABLE_WRITES, 0);
#undef QUEUE_SYSFS_BIT_FNS
static ssize_t queue_zoned_show(struct request_queue *q, char *page)
@@ -631,6 +632,7 @@ static struct attribute *queue_attrs[] = {
_nomerges_entry.attr,
_rq_affinity_entry.attr,
_iostats_entry.attr,
+ _stable_writes_entry.attr,
_random_entry.attr,
_poll_entry.attr,
_wc_entry.attr,
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4f61e920946144..4a8515acccb3bf 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -5022,7 +5022,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
}
if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC))
- q->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q);
/*
* disk_release() expects a queue ref from add_disk() and will
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index f336c0d45a6f16..e506fef51309e3 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1932,7 +1932,7 @@ static int zram_add(void)
if (ZRAM_LOGICAL_BLOCK_SIZE == PAGE_SIZE)
blk_queue_max_write_zeroes_sectors(zram->disk->queue, UINT_MAX);
- zram->disk->queue->backing_dev_info->capabilities |=
BDI_CAP_STABLE_WRITES;
+ blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, zram->disk->queue);
device_add_disk(NULL, zram->disk, zram_disk_attr_groups);
strlcpy(zram->compressor, default_compressor, sizeof(zram->compressor));
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 324a42ed2f8894..e1adec51cb5b41 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@
