diff options
| -rw-r--r-- | fs/block_dev.c | 10 | ||||
| -rw-r--r-- | fs/ioctl.c | 6 | ||||
| -rw-r--r-- | include/linux/fs.h | 2 |
3 files changed, 15 insertions, 3 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 1d9c9f3754f8..b48c41bf0f86 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -235,7 +235,10 @@ struct super_block *freeze_bdev(struct block_device *bdev) sb = get_active_super(bdev); if (!sb) goto out; - error = freeze_super(sb); + if (sb->s_op->freeze_super) + error = sb->s_op->freeze_super(sb); + else + error = freeze_super(sb); if (error) { deactivate_super(sb); bdev->bd_fsfreeze_count--; @@ -272,7 +275,10 @@ int thaw_bdev(struct block_device *bdev, struct super_block *sb) if (!sb) goto out; - error = thaw_super(sb); + if (sb->s_op->thaw_super) + error = sb->s_op->thaw_super(sb); + else + error = thaw_super(sb); if (error) { bdev->bd_fsfreeze_count++; mutex_unlock(&bdev->bd_fsfreeze_mutex); diff --git a/fs/ioctl.c b/fs/ioctl.c index 8ac3fad36192..77c9a7812542 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -518,10 +518,12 @@ static int ioctl_fsfreeze(struct file *filp) return -EPERM; /* If filesystem doesn't support freeze feature, return. */ - if (sb->s_op->freeze_fs == NULL) + if (sb->s_op->freeze_fs == NULL && sb->s_op->freeze_super == NULL) return -EOPNOTSUPP; /* Freeze */ + if (sb->s_op->freeze_super) + return sb->s_op->freeze_super(sb); return freeze_super(sb); } @@ -533,6 +535,8 @@ static int ioctl_fsthaw(struct file *filp) return -EPERM; /* Thaw */ + if (sb->s_op->thaw_super) + return sb->s_op->thaw_super(sb); return thaw_super(sb); } diff --git a/include/linux/fs.h b/include/linux/fs.h index 9ab779e8a63c..b4a1d73c0d5d 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1577,7 +1577,9 @@ struct super_operations { void (*evict_inode) (struct inode *); void (*put_super) (struct super_block *); int (*sync_fs)(struct super_block *sb, int wait); + int (*freeze_super) (struct super_block *); int (*freeze_fs) (struct super_block *); + int (*thaw_super) (struct super_block *); int (*unfreeze_fs) (struct super_block *); int (*statfs) (struct dentry *, struct kstatfs *); int (*remount_fs) (struct super_block *, int *, char *); |