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btrfs: ioctl: Try to use btrfs_fs_info instead of *file 

Some functions are doing some unnecessary indirection to reach the
btrfs_fs_info struct. Change these functions to receive a btrfs_fs_info
struct instead of a *file.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Marcos Paulo de Souza 2019-10-10 21:23:11 -03:00 committed by David Sterba
parent 4273eaff9b
commit b929c1d831
1 changed files with 15 additions and 21 deletions
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36
fs/btrfs/ioctl.c
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@ -479,10 +479,9 @@ static int btrfs_ioctl_getversion(struct file *file, int __user *arg)
return put_user(inode->i_generation, arg);
}
static noinline int btrfs_ioctl_fitrim(struct file *file, void __user *arg)
static noinline int btrfs_ioctl_fitrim(struct btrfs_fs_info *fs_info,
void __user *arg)
{
struct inode *inode = file_inode(file);
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_device *device;
struct request_queue *q;
struct fstrim_range range;
@ -4952,10 +4951,9 @@ static long btrfs_ioctl_quota_rescan(struct file *file, void __user *arg)
return ret;
}
static long btrfs_ioctl_quota_rescan_status(struct file *file, void __user *arg)
static long btrfs_ioctl_quota_rescan_status(struct btrfs_fs_info *fs_info,
void __user *arg)
{
struct inode *inode = file_inode(file);
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ioctl_quota_rescan_args *qsa;
int ret = 0;
@ -4978,11 +4976,9 @@ static long btrfs_ioctl_quota_rescan_status(struct file *file, void __user *arg)
return ret;
}
static long btrfs_ioctl_quota_rescan_wait(struct file *file, void __user *arg)
static long btrfs_ioctl_quota_rescan_wait(struct btrfs_fs_info *fs_info,
void __user *arg)
{
struct inode *inode = file_inode(file);
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@ -5154,10 +5150,9 @@ static long btrfs_ioctl_set_received_subvol(struct file *file,
return ret;
}
static int btrfs_ioctl_get_fslabel(struct file *file, void __user *arg)
static int btrfs_ioctl_get_fslabel(struct btrfs_fs_info *fs_info,
void __user *arg)
{
struct inode *inode = file_inode(file);
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
size_t len;
int ret;
char label[BTRFS_LABEL_SIZE];
@ -5241,10 +5236,9 @@ int btrfs_ioctl_get_supported_features(void __user *arg)
return 0;
}
static int btrfs_ioctl_get_features(struct file *file, void __user *arg)
static int btrfs_ioctl_get_features(struct btrfs_fs_info *fs_info,
void __user *arg)
{
struct inode *inode = file_inode(file);
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_super_block *super_block = fs_info->super_copy;
struct btrfs_ioctl_feature_flags features;
@ -5445,11 +5439,11 @@ long btrfs_ioctl(struct file *file, unsigned int
case FS_IOC_GETVERSION:
return btrfs_ioctl_getversion(file, argp);
case FS_IOC_GETFSLABEL:
return btrfs_ioctl_get_fslabel(file, argp);
return btrfs_ioctl_get_fslabel(fs_info, argp);
case FS_IOC_SETFSLABEL:
return btrfs_ioctl_set_fslabel(file, argp);
case FITRIM:
return btrfs_ioctl_fitrim(file, argp);
return btrfs_ioctl_fitrim(fs_info, argp);
case BTRFS_IOC_SNAP_CREATE:
return btrfs_ioctl_snap_create(file, argp, 0);
case BTRFS_IOC_SNAP_CREATE_V2:
@ -5554,15 +5548,15 @@ long btrfs_ioctl(struct file *file, unsigned int
case BTRFS_IOC_QUOTA_RESCAN:
return btrfs_ioctl_quota_rescan(file, argp);
case BTRFS_IOC_QUOTA_RESCAN_STATUS:
return btrfs_ioctl_quota_rescan_status(file, argp);
return btrfs_ioctl_quota_rescan_status(fs_info, argp);
case BTRFS_IOC_QUOTA_RESCAN_WAIT:
return btrfs_ioctl_quota_rescan_wait(file, argp);
return btrfs_ioctl_quota_rescan_wait(fs_info, argp);
case BTRFS_IOC_DEV_REPLACE:
return btrfs_ioctl_dev_replace(fs_info, argp);
case BTRFS_IOC_GET_SUPPORTED_FEATURES:
return btrfs_ioctl_get_supported_features(argp);
case BTRFS_IOC_GET_FEATURES:
return btrfs_ioctl_get_features(file, argp);
return btrfs_ioctl_get_features(fs_info, argp);
case BTRFS_IOC_SET_FEATURES:
return btrfs_ioctl_set_features(file, argp);
case FS_IOC_FSGETXATTR: