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Btrfs: clean up btrfs_ioctl a little bit 

Provide a void __user *argp pointer so that we can avoid duplicating
the cast for various sub-command calls.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2008-12-02 06:36:08 -05:00 committed by Chris Mason
parent 97288f2c71
commit 4bcabaa30a
1 changed files with 6 additions and 5 deletions
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11
fs/btrfs/ioctl.c
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@ -1117,20 +1117,21 @@ long btrfs_ioctl(struct file *file, unsigned int
cmd, unsigned long arg)
{
struct btrfs_root *root = BTRFS_I(fdentry(file)->d_inode)->root;
void __user *argp = (void __user *)arg;
switch (cmd) {
case BTRFS_IOC_SNAP_CREATE:
return btrfs_ioctl_snap_create(file, (void __user *)arg, 0);
return btrfs_ioctl_snap_create(file, argp, 0);
case BTRFS_IOC_SUBVOL_CREATE:
return btrfs_ioctl_snap_create(file, (void __user *)arg, 1);
return btrfs_ioctl_snap_create(file, argp, 1);
case BTRFS_IOC_DEFRAG:
return btrfs_ioctl_defrag(file);
case BTRFS_IOC_RESIZE:
return btrfs_ioctl_resize(root, (void __user *)arg);
return btrfs_ioctl_resize(root, argp);
case BTRFS_IOC_ADD_DEV:
return btrfs_ioctl_add_dev(root, (void __user *)arg);
return btrfs_ioctl_add_dev(root, argp);
case BTRFS_IOC_RM_DEV:
return btrfs_ioctl_rm_dev(root, (void __user *)arg);
return btrfs_ioctl_rm_dev(root, argp);
case BTRFS_IOC_BALANCE:
return btrfs_balance(root->fs_info->dev_root);
case BTRFS_IOC_CLONE: