Btrfs: do not overwrite error return value in the get device stats ioctl
If the call to btrfs_get_dev_stats() failed we would overwrite the error returned to user space with -EFAULT if the call to copy_to_user() failed as well. Fix that by calling copy_to_user() only if btrfs_get_dev_stats() returned success. Reviewed-by:Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Signed-off-by:
David Sterba <dsterba@suse.com>
parent
4fa99b00
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