Just check inode_unhashed on the whole device bdev inode instead,
and provide a helper to check for that information.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
block/genhd.c | 6 ++----
block/partitions/core.c | 4 ++--
drivers/md/md.h | 4 +---
drivers/nvme/host/core.c | 2 +-
fs/block_dev.c | 2 +-
include/linux/genhd.h | 9 +++++----
6 files changed, 12 insertions(+), 15 deletions(-)
diff --git a/block/genhd.c b/block/genhd.c
index a4817e42f3a3..9021c8ce3869 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -77,7 +77,8 @@ bool set_capacity_and_notify(struct gendisk *disk, sector_t size)
* initial capacity during probing.
*/
if (size == capacity ||
- (disk->flags & (GENHD_FL_UP | GENHD_FL_HIDDEN)) != GENHD_FL_UP)
+ !disk_live(disk) ||
+ (disk->flags & GENHD_FL_HIDDEN))
return false;
pr_info("%s: detected capacity change from %lld to %lld\n",
@@ -519,8 +520,6 @@ static void __device_add_disk(struct device *parent, struct gendisk *disk,
disk->flags |= GENHD_FL_EXT_DEVT;
}
- disk->flags |= GENHD_FL_UP;
-
disk_alloc_events(disk);
if (disk->flags & GENHD_FL_HIDDEN) {
@@ -604,7 +603,6 @@ void del_gendisk(struct gendisk *disk)
mutex_lock(&disk->open_mutex);
remove_inode_hash(disk->part0->bd_inode);
- disk->flags &= ~GENHD_FL_UP;
blk_drop_partitions(disk);
mutex_unlock(&disk->open_mutex);
diff --git a/block/partitions/core.c b/block/partitions/core.c
index fb3a556cacce..c6738ccbcee5 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -459,7 +459,7 @@ int bdev_add_partition(struct block_device *bdev, int partno,
int ret;
mutex_lock(&disk->open_mutex);
- if (!(disk->flags & GENHD_FL_UP)) {
+ if (!disk_live(disk)) {
ret = -ENXIO;
goto out;
}
@@ -669,7 +669,7 @@ int bdev_disk_changed(struct gendisk *disk, bool invalidate)
lockdep_assert_held(&disk->open_mutex);
- if (!(disk->flags & GENHD_FL_UP))
+ if (!disk_live(disk))
return -ENXIO;
rescan:
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 832547cf038f..4c96c36bd01a 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -764,9 +764,7 @@ struct md_rdev *md_find_rdev_rcu(struct mddev *mddev, dev_t dev);
static inline bool is_mddev_broken(struct md_rdev *rdev, const char *md_type)
{
- int flags = rdev->bdev->bd_disk->flags;
-
- if (!(flags & GENHD_FL_UP)) {
+ if (!disk_live(rdev->bdev->bd_disk)) {
if (!test_and_set_bit(MD_BROKEN, &rdev->mddev->flags))
pr_warn("md: %s: %s array has a missing/failed member\n",
mdname(rdev->mddev), md_type);
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index e24a0143fd87..cb12d8b94e82 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1822,7 +1822,7 @@ static void nvme_update_disk_info(struct gendisk *disk,
static inline bool nvme_first_scan(struct gendisk *disk)
{
/* nvme_alloc_ns() scans the disk prior to adding it */
- return !(disk->flags & GENHD_FL_UP);
+ return !disk_live(disk);
}
static void nvme_set_chunk_sectors(struct nvme_ns *ns, struct nvme_id_ns *id)
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 6658f40ae492..ab50428b328b 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1374,7 +1374,7 @@ struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, void *holder)
mutex_lock(&disk->open_mutex);
ret = -ENXIO;
- if (!(disk->flags & GENHD_FL_UP))
+ if (!disk_live(disk))
goto abort_claiming;
if (bdev_is_partition(bdev))
ret = blkdev_get_part(bdev, mode);
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 849486de81c6..ddd02def1ed4 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -60,9 +60,6 @@ struct partition_meta_info {
* device.
* Affects responses to the ``CDROM_GET_CAPABILITY`` ioctl.
*
- * ``GENHD_FL_UP`` (0x0010): indicates that the block device is "up",
- * with a similar meaning to network interfaces.
- *
* ``GENHD_FL_SUPPRESS_PARTITION_INFO`` (0x0020): don't include
* partition information in ``/proc/partitions`` or in the output of
* printk_all_partitions().
@@ -97,7 +94,6 @@ struct partition_meta_info {
/* 2 is unused (used to be GENHD_FL_DRIVERFS) */
/* 4 is unused (used to be GENHD_FL_MEDIA_CHANGE_NOTIFY) */
#define GENHD_FL_CD 0x0008
-#define GENHD_FL_UP 0x0010
#define GENHD_FL_SUPPRESS_PARTITION_INFO 0x0020
#define GENHD_FL_EXT_DEVT 0x0040
#define GENHD_FL_NATIVE_CAPACITY 0x0080
@@ -175,6 +171,11 @@ struct gendisk {
u64 diskseq;
};
+static inline bool disk_live(struct gendisk *disk)
+{
+ return !inode_unhashed(disk->part0->bd_inode);
+}
+
/*
* The gendisk is refcounted by the part0 block_device, and the bd_device
* therein is also used for device model presentation in sysfs.
--
2.30.2
