[PATCH 07/31] block: pass a gendisk on bdev_check_media_change

Christoph Hellwig
2023-06-06T07:41:26Z

bdev_check_media_change should only ever be called for the whole device.
Pass a gendisk to make that explicit and rename the function to
disk_check_media_change.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
block/disk-events.c | 18 +++++++++---------
drivers/block/amiflop.c | 2 +-
drivers/block/ataflop.c | 6 +++---
drivers/block/floppy.c | 16 ++++++++--------
drivers/block/swim.c | 2 +-
drivers/block/swim3.c | 2 +-
drivers/cdrom/gdrom.c | 2 +-
drivers/md/md.c | 2 +-
drivers/scsi/sd.c | 9 ++++-----
drivers/scsi/sr.c | 2 +-
include/linux/blkdev.h | 2 +-
11 files changed, 31 insertions(+), 32 deletions(-)

diff --git a/block/disk-events.c b/block/disk-events.c
index aee25a7e1ab7de..8b1b63225738f8 100644
--- a/block/disk-events.c
+++ b/block/disk-events.c
@@ -263,31 +263,31 @@ static unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask)
}

/**
- * bdev_check_media_change - check if a removable media has been changed
- * @bdev: block device to check
+ * disk_check_media_change - check if a removable media has been changed
+ * @disk: gendisk to check
*
* Check whether a removable media has been changed, and attempt to free all
* dentries and inodes and invalidates all block device page cache entries in
* that case.
*
- * Returns %true if the block device changed, or %false if not.
+ * Returns %true if the media has changed, or %false if not.
*/
-bool bdev_check_media_change(struct block_device *bdev)
+bool disk_check_media_change(struct gendisk *disk)
{
unsigned int events;

- events = disk_clear_events(bdev->bd_disk, DISK_EVENT_MEDIA_CHANGE |
+ events = disk_clear_events(disk, DISK_EVENT_MEDIA_CHANGE |
DISK_EVENT_EJECT_REQUEST);
if (!(events & DISK_EVENT_MEDIA_CHANGE))
return false;

- if (__invalidate_device(bdev, true))
+ if (__invalidate_device(disk->part0, true))
pr_warn("VFS: busy inodes on changed media %s\n",
- bdev->bd_disk->disk_name);
- set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state);
+ disk->disk_name);
+ set_bit(GD_NEED_PART_SCAN, &disk->state);
return true;
}
-EXPORT_SYMBOL(bdev_check_media_change);
+EXPORT_SYMBOL(disk_check_media_change);

/**
* disk_force_media_change - force a media change event
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 4c8b2ba579ee6d..6de12b311749a1 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1675,7 +1675,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
}

if (mode & (FMODE_READ|FMODE_WRITE)) {
- bdev_check_media_change(bdev);
+ disk_check_media_change(bdev->bd_disk);
if (mode & FMODE_WRITE) {
int wrprot;

diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index 9deb4df6bdb8b2..da481ddbca90db 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -1760,8 +1760,8 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode,
/* invalidate the buffer track to force a reread */
BufferDrive = -1;
set_bit(drive, &fake_change);
- if (bdev_check_media_change(bdev))
- floppy_revalidate(bdev->bd_disk);
+ if (disk_check_media_change(disk))
+ floppy_revalidate(disk);
return 0;
default:
return -EINVAL;
@@ -1938,7 +1938,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
return 0;

if (mode & (FMODE_READ|FMODE_WRITE)) {
- if (bdev_check_media_change(bdev))
+ if (disk_check_media_change(bdev->bd_disk))
floppy_revalidate(bdev->bd_disk);
if (mode & FMODE_WRITE) {
if (p->wpstat) {
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 28ec6b442e9c58..3accafcbc95c85 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3210,13 +3210,13 @@ static int floppy_raw_cmd_ioctl(int type, int drive, int cmd,

#endif

-static int invalidate_drive(struct block_device *bdev)
+static int invalidate_drive(struct gendisk *disk)
{
/* invalidate the buffer track to force a reread */
- set_bit((long)bdev->bd_disk->private_data, &fake_change);
+ set_bit((long)disk->private_data, &fake_change);
process_fd_request();
- if (bdev_check_media_change(bdev))
- floppy_revalidate(bdev->bd_disk);
+ if (disk_check_media_change(disk))
+ floppy_revalidate(disk);
return 0;
}

@@ -3287,7 +3287,7 @@ static int set_geometry(unsigned int cmd, struct floppy_struct *g,
drive_state[current_drive].maxtrack ||
((user_params[drive].sect ^ oldStretch) &
(FD_SWAPSIDES | FD_SECTBASEMASK)))
- invalidate_drive(bdev);
+ invalidate_drive(bdev->bd_disk);
else
process_fd_request();
}
@@ -3464,7 +3464,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
current_type[drive] = NULL;
floppy_sizes[drive] = MAX_DISK_SIZE << 1;
drive_state[drive].keep_data = 0;
- return invalidate_drive(bdev);
+ return invalidate_drive(bdev->bd_disk);
case FDSETPRM:
case FDDEFPRM:
return set_geometry(cmd, &inparam.g, drive, type, bdev);
@@ -3503,7 +3503,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
case FDFLUSH:
if (lock_fdc(drive))
return -EINTR;
- return invalidate_drive(bdev);
+ return invalidate_drive(bdev->bd_disk);
case FDSETEMSGTRESH:
drive_params[drive].max_errors.reporting = (unsigned short)(param & 0x0f);
return 0;
@@ -4054,7 +4054,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
drive_state[drive].last_checked = 0;
clear_bit(FD_OPEN_SHOULD_FAIL_BIT,
&drive_state[drive].flags);
- if (bdev_check_media_change(bdev))
+ if (disk_check_media_change(bdev->bd_disk))
floppy_revalidate(bdev->bd_disk);
if (test_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags))
goto out;
diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index 42b4b682869096..105bc5fd1b8c62 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -640,7 +640,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
return 0;

if (mode & (FMODE_READ|FMODE_WRITE)) {
- if (bdev_check_media_change(bdev) && fs->disk_in)
+ if (disk_check_media_change(bdev->bd_disk) && fs->disk_in)
fs->ejected = 0;
if ((mode & FMODE_WRITE) && fs->write_protected) {
err = -EROFS;
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index da811a7da03f3d..3d689ba312f568 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -963,7 +963,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)

if (err == 0 && (mode & FMODE_NDELAY) == 0
&& (mode & (FMODE_READ|FMODE_WRITE))) {
- if (bdev_check_media_change(bdev))
+ if (disk_check_media_change(bdev->bd_disk))
floppy_revalidate(bdev->bd_disk);
if (fs->ejected)
err = -ENXIO;
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index a401dc4218a998..3cb92df38ebeb8 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -478,7 +478,7 @@ static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
{
int ret;

- bdev_check_media_change(bdev);
+ disk_check_media_change(bdev->bd_disk);

mutex_lock(&gdrom_mutex);
ret = cdrom_open(gd.cd_info);
diff --git a/drivers/md/md.c b/drivers/md/md.c
index fabf9c543735b6..77046c91bea439 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -7789,7 +7789,7 @@ static int md_open(struct block_device *bdev, fmode_t mode)
atomic_inc(&mddev->openers);
mutex_unlock(&mddev->open_mutex);

- bdev_check_media_change(bdev);
+ disk_check_media_change(bdev->bd_disk);
return 0;

out_unlock:
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 1624d528aa1f9c..aab649d5bad3f8 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1280,11 +1280,10 @@ static void sd_uninit_command(struct scsi_cmnd *SCpnt)
mempool_free(rq->special_vec.bv_page, sd_page_pool);
}

-static bool sd_need_revalidate(struct block_device *bdev,
- struct scsi_disk *sdkp)
+static bool sd_need_revalidate(struct gendisk *disk, struct scsi_disk *sdkp)
{
if (sdkp->device->removable || sdkp->write_prot) {
- if (bdev_check_media_change(bdev))
+ if (disk_check_media_change(disk))
return true;
}

@@ -1293,7 +1292,7 @@ static bool sd_need_revalidate(struct block_device *bdev,
* nothing to do with partitions, BLKRRPART is used to force a full
* revalidate after things like a format for historical reasons.
*/
- return test_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state);
+ return test_bit(GD_NEED_PART_SCAN, &disk->state);
}

/**
@@ -1330,7 +1329,7 @@ static int sd_open(struct block_device *bdev, fmode_t mode)
if (!scsi_block_when_processing_errors(sdev))
goto error_out;

- if (sd_need_revalidate(bdev, sdkp))
+ if (sd_need_revalidate(bdev->bd_disk, sdkp))
sd_revalidate_disk(bdev->bd_disk);

/*
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 6d33120ee5ba85..1592e6e10c7452 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -494,7 +494,7 @@ static int sr_block_open(struct block_device *bdev, fmode_t mode)
return -ENXIO;

scsi_autopm_get_device(sdev);
- if (bdev_check_media_change(bdev))
+ if (disk_check_media_change(bdev->bd_disk))
sr_revalidate_disk(cd);

mutex_lock(&cd->lock);
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f4c339d9dd03de..a1688eba7e5e9a 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -817,7 +817,7 @@ int __register_blkdev(unsigned int major, const char *name,
__register_blkdev(major, name, NULL)
void unregister_blkdev(unsigned int major, const char *name);

-bool bdev_check_media_change(struct block_device *bdev);
+bool disk_check_media_change(struct gendisk *disk);
int __invalidate_device(struct block_device *bdev, bool kill_dirty);
void set_capacity(struct gendisk *disk, sector_t size);

--
2.39.2