diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/loop.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c index f1d7a4fe30fc..cce5d4e8e863 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -679,6 +679,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, { struct file *file, *old_file; int error; + bool partscan; error = mutex_lock_killable_nested(&loop_ctl_mutex, 1); if (error) @@ -720,9 +721,10 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, blk_mq_unfreeze_queue(lo->lo_queue); fput(old_file); - if (lo->lo_flags & LO_FLAGS_PARTSCAN) - loop_reread_partitions(lo, bdev); + partscan = lo->lo_flags & LO_FLAGS_PARTSCAN; mutex_unlock(&loop_ctl_mutex); + if (partscan) + loop_reread_partitions(lo, bdev); return 0; out_putf: @@ -903,6 +905,7 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode, int lo_flags = 0; int error; loff_t size; + bool partscan; /* This is safe, since we have a reference from open(). */ __module_get(THIS_MODULE); @@ -969,14 +972,15 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode, lo->lo_state = Lo_bound; if (part_shift) lo->lo_flags |= LO_FLAGS_PARTSCAN; - if (lo->lo_flags & LO_FLAGS_PARTSCAN) - loop_reread_partitions(lo, bdev); + partscan = lo->lo_flags & LO_FLAGS_PARTSCAN; /* Grab the block_device to prevent its destruction after we * put /dev/loopXX inode. Later in __loop_clr_fd() we bdput(bdev). */ bdgrab(bdev); mutex_unlock(&loop_ctl_mutex); + if (partscan) + loop_reread_partitions(lo, bdev); return 0; out_unlock: @@ -1157,6 +1161,8 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info) int err; struct loop_func_table *xfer; kuid_t uid = current_uid(); + struct block_device *bdev; + bool partscan = false; err = mutex_lock_killable_nested(&loop_ctl_mutex, 1); if (err) @@ -1245,10 +1251,13 @@ out_unfreeze: !(lo->lo_flags & LO_FLAGS_PARTSCAN)) { lo->lo_flags |= LO_FLAGS_PARTSCAN; lo->lo_disk->flags &= ~GENHD_FL_NO_PART_SCAN; - loop_reread_partitions(lo, lo->lo_device); + bdev = lo->lo_device; + partscan = true; } out_unlock: mutex_unlock(&loop_ctl_mutex); + if (partscan) + loop_reread_partitions(lo, bdev); return err; } |